mirror of
https://github.com/isar/libmdbx.git
synced 2024-10-30 11:29:19 +08:00
3729 lines
129 KiB
C++
3729 lines
129 KiB
C++
//
|
|
// The libmdbx C++ API (preliminary)
|
|
//
|
|
// Reguires GNU C++ >= 5.1, clang >= 4.0, MSVC >= 19.0 (Visual Studio 2015).
|
|
|
|
/// \file mdbx.h++
|
|
/// \brief The libmdbx C++ API header file
|
|
|
|
#pragma once
|
|
|
|
#if (!defined(__cplusplus) || __cplusplus < 201103L) && \
|
|
!(defined(_MSC_VER) && _MSC_VER == 1900)
|
|
#error "C++11 or better is required"
|
|
#endif
|
|
|
|
#if (defined(_WIN32) || defined(_WIN64)) && MDBX_AVOID_CRT
|
|
#error "CRT is required for C++ API, the MDBX_AVOID_CRT option must be disabled"
|
|
#endif /* Windows */
|
|
|
|
#ifndef __has_include
|
|
#define __has_include(header) (0)
|
|
#endif /* __has_include */
|
|
|
|
#if defined(__has_include) && __has_include(<version>)
|
|
#include <version>
|
|
#endif /* <version> */
|
|
|
|
#ifndef NOMINMAX
|
|
#define NOMINMAX
|
|
#endif
|
|
|
|
#include <algorithm> // for std::min/max
|
|
#include <cassert> // for assert()
|
|
#include <cstring> // for std::strlen, str:memcmp
|
|
#include <exception> // for std::exception_ptr
|
|
#include <memory> // for std::uniq_ptr
|
|
#include <ostream> // for std::ostream
|
|
#include <sstream> // for std::ostringstream
|
|
#include <stdexcept> // for std::invalid_argument
|
|
#include <string> // for std::string
|
|
#include <type_traits> // for std::is_pod<>, etc.
|
|
#include <vector> // for std::vector<> as template args
|
|
|
|
#if defined(__cpp_lib_bit_cast) && __cpp_lib_bit_cast >= 201806L
|
|
#include <bit>
|
|
#endif
|
|
|
|
#if defined(__cpp_lib_memory_resource) && __cpp_lib_memory_resource >= 201603L
|
|
#include <memory_resource>
|
|
#endif
|
|
|
|
#if defined(__cpp_lib_string_view) && __cpp_lib_string_view >= 201606L
|
|
#include <string_view>
|
|
#endif
|
|
|
|
#if defined(__cpp_lib_filesystem) && __cpp_lib_filesystem >= 201703L
|
|
#include <filesystem>
|
|
#endif
|
|
|
|
#include "mdbx.h"
|
|
|
|
#if !defined(DOXYGEN) && !defined(__cpp_constexpr) || \
|
|
__cpp_constexpr < 201304L || \
|
|
(defined(__GNUC__) && __GNUC__ < 6 && !defined(__clang__)) || \
|
|
(defined(_MSC_VER) && _MSC_VER < 1910) || \
|
|
(defined(__clang__) && __clang_major__ < 4)
|
|
#define constexpr inline
|
|
#endif /* __cpp_constexpr < 201304 */
|
|
|
|
#if !defined(cxx17_constexpr)
|
|
#if defined(DOXYGEN) || \
|
|
defined(__cpp_constexpr) && __cpp_constexpr >= 201603L && \
|
|
((defined(_MSC_VER) && _MSC_VER >= 1915) || \
|
|
(defined(__clang__) && __clang_major__ > 5) || \
|
|
(defined(__GNUC__) && __GNUC__ > 7) || \
|
|
(!defined(__GNUC__) && !defined(__clang__) && !defined(_MSC_VER)))
|
|
#define cxx17_constexpr constexpr
|
|
#else
|
|
#define cxx17_constexpr inline
|
|
#endif
|
|
#endif /* cxx17_constexpr */
|
|
|
|
#ifndef cxx20_constexpr
|
|
#if defined(DOXYGEN) || defined(__cpp_lib_is_constant_evaluated) && \
|
|
__cpp_lib_is_constant_evaluated >= 201811L && \
|
|
defined(__cpp_lib_constexpr_string) && \
|
|
__cpp_lib_constexpr_string >= 201907L
|
|
#define cxx20_constexpr constexpr
|
|
#else
|
|
#define cxx20_constexpr inline
|
|
#endif
|
|
#endif /* cxx20_constexpr */
|
|
|
|
#if !defined(CONSTEXPR_ASSERT)
|
|
#if defined NDEBUG
|
|
#define CONSTEXPR_ASSERT(expr) void(0)
|
|
#else
|
|
#define CONSTEXPR_ASSERT(expr) ((expr) ? void(0) : [] { assert(!#expr); }())
|
|
#endif
|
|
#endif /* constexpr_assert */
|
|
|
|
#ifndef mdbx_likely
|
|
#if defined(DOXYGEN) || \
|
|
(defined(__GNUC__) || __has_builtin(__builtin_expect)) && \
|
|
!defined(__COVERITY__)
|
|
#define mdbx_likely(cond) __builtin_expect(!!(cond), 1)
|
|
#else
|
|
#define mdbx_likely(x) (x)
|
|
#endif
|
|
#endif /* mdbx_likely */
|
|
|
|
#ifndef mdbx_unlikely
|
|
#if defined(DOXYGEN) || \
|
|
(defined(__GNUC__) || __has_builtin(__builtin_expect)) && \
|
|
!defined(__COVERITY__)
|
|
#define mdbx_unlikely(cond) __builtin_expect(!!(cond), 0)
|
|
#else
|
|
#define mdbx_unlikely(x) (x)
|
|
#endif
|
|
#endif /* mdbx_unlikely */
|
|
|
|
#ifndef cxx17_attribute_fallthrough
|
|
#if defined(DOXYGEN) || \
|
|
(__has_cpp_attribute(fallthrough) && \
|
|
(!defined(__clang__) || __clang__ > 4)) || \
|
|
__cplusplus >= 201703L
|
|
#define cxx17_attribute_fallthrough [[fallthrough]]
|
|
#else
|
|
#define cxx17_attribute_fallthrough
|
|
#endif
|
|
#endif /* cxx17_attribute_fallthrough */
|
|
|
|
#ifndef cxx20_attribute_likely
|
|
#if defined(DOXYGEN) || __has_cpp_attribute(likely)
|
|
#define cxx20_attribute_likely [[likely]]
|
|
#else
|
|
#define cxx20_attribute_likely
|
|
#endif
|
|
#endif /* cxx20_attribute_likely */
|
|
|
|
#ifndef cxx20_attribute_unlikely
|
|
#if defined(DOXYGEN) || __has_cpp_attribute(unlikely)
|
|
#define cxx20_attribute_unlikely [[unlikely]]
|
|
#else
|
|
#define cxx20_attribute_unlikely
|
|
#endif
|
|
#endif /* cxx20_attribute_unlikely */
|
|
|
|
#ifdef _MSC_VER
|
|
#pragma warning(push, 4)
|
|
#pragma warning(disable : 4251) /* 'std::FOO' needs to have dll-interface to \
|
|
be used by clients of 'mdbx::BAR' */
|
|
#pragma warning(disable : 4275) /* non dll-interface 'std::FOO' used as \
|
|
base for dll-interface 'mdbx::BAR' */
|
|
/* MSVC is mad and can generate this warning for its own intermediate
|
|
* automatically generated code, which becomes unreachable after some kinds of
|
|
* optimization (copy ellision, etc). */
|
|
#pragma warning(disable : 4702) /* unreachable code */
|
|
#endif /* _MSC_VER (warnings) */
|
|
|
|
//------------------------------------------------------------------------------
|
|
/// \defgroup cxx_api C++ API
|
|
///
|
|
/// @{
|
|
|
|
namespace mdbx {
|
|
|
|
// Functions whose signature depends on the byte type
|
|
// must be strictly defined as inline!
|
|
#if defined(DOXYGEN) || (defined(__cpp_char8_t) && __cpp_char8_t >= 201811)
|
|
using byte = char8_t;
|
|
#else
|
|
using byte = unsigned char;
|
|
#endif /* __cpp_char8_t >= 201811*/
|
|
|
|
using version_info = ::MDBX_version_info;
|
|
constexpr const version_info &get_version() noexcept;
|
|
using build_info = ::MDBX_build_info;
|
|
constexpr const build_info &get_build() noexcept;
|
|
|
|
template <class CONTAINER, class MEMBER>
|
|
static constexpr ptrdiff_t offset_of(const MEMBER CONTAINER::*const member) {
|
|
return static_cast<const char *>(static_cast<const void *>(
|
|
&(static_cast<const CONTAINER *>(nullptr)->*member))) -
|
|
static_cast<const char *>(nullptr);
|
|
}
|
|
|
|
template <class CONTAINER, class MEMBER>
|
|
static constexpr const CONTAINER *owner_of(const MEMBER *ptr,
|
|
const MEMBER CONTAINER::*member) {
|
|
return static_cast<const CONTAINER *>(static_cast<const void *>(
|
|
static_cast<const char *>(static_cast<const void *>(ptr)) -
|
|
offset_of(member)));
|
|
}
|
|
|
|
template <class CONTAINER, class MEMBER>
|
|
static constexpr CONTAINER *owner_of(MEMBER *ptr,
|
|
const MEMBER CONTAINER::*member) {
|
|
return static_cast<CONTAINER *>(static_cast<void *>(
|
|
static_cast<char *>(static_cast<void *>(ptr)) - offset_of(member)));
|
|
}
|
|
|
|
static cxx17_constexpr size_t strlen(const char *c_str) noexcept;
|
|
|
|
struct slice;
|
|
class env_ref;
|
|
class env;
|
|
class txn_ref;
|
|
class txn;
|
|
class cursor_ref;
|
|
class cursor;
|
|
|
|
using default_allocator = ::std::string::allocator_type;
|
|
#if defined(DOXYGEN) || \
|
|
defined(__cpp_lib_memory_resource) && __cpp_lib_memory_resource >= 201603L
|
|
using polymorphic_allocator = ::std::pmr::string::allocator_type;
|
|
#endif /* __cpp_lib_memory_resource >= 201603L */
|
|
|
|
template <class ALLOCATOR = default_allocator>
|
|
using string = ::std::basic_string<char, ::std::char_traits<char>, ALLOCATOR>;
|
|
|
|
using filehandle = ::mdbx_filehandle_t;
|
|
#if defined(DOXYGEN) || \
|
|
(defined(__cpp_lib_filesystem) && __cpp_lib_filesystem >= 201703L && \
|
|
(!defined(__MAC_OS_X_VERSION_MIN_REQUIRED) || \
|
|
__MAC_OS_X_VERSION_MIN_REQUIRED >= 101500))
|
|
using path = std::filesystem::path;
|
|
#elif defined(_WIN32) || defined(_WIN64)
|
|
using path = ::std::wstring;
|
|
#else
|
|
using path = ::std::string;
|
|
#endif
|
|
|
|
/// Transfers C++ exceptions thru C callbacks
|
|
class LIBMDBX_API_TYPE exception_thunk {
|
|
::std::exception_ptr captured_;
|
|
|
|
public:
|
|
exception_thunk() noexcept = default;
|
|
exception_thunk(const exception_thunk &) = delete;
|
|
exception_thunk(exception_thunk &&) = delete;
|
|
exception_thunk &operator=(const exception_thunk &) = delete;
|
|
exception_thunk &operator=(exception_thunk &&) = delete;
|
|
inline bool is_clean() const noexcept;
|
|
inline void capture() noexcept;
|
|
inline void rethrow_captured() const;
|
|
};
|
|
|
|
class LIBMDBX_API_TYPE error {
|
|
MDBX_error_t code_;
|
|
inline error &operator=(MDBX_error_t error_code) noexcept;
|
|
|
|
public:
|
|
constexpr error(MDBX_error_t error_code) noexcept;
|
|
error(const error &) = default;
|
|
error(error &&) = default;
|
|
error &operator=(const error &) = default;
|
|
error &operator=(error &&) = default;
|
|
|
|
constexpr friend bool operator==(const error &a, const error &b) noexcept;
|
|
constexpr friend bool operator!=(const error &a, const error &b) noexcept;
|
|
|
|
constexpr bool is_success() const noexcept;
|
|
constexpr bool is_result_true() const noexcept;
|
|
constexpr bool is_result_false() const noexcept;
|
|
constexpr bool is_failure() const noexcept;
|
|
|
|
/// returns error code
|
|
constexpr MDBX_error_t code() const noexcept;
|
|
|
|
/// returns message for MDBX's errors only and "SYSTEM" for others
|
|
const char *what() const noexcept;
|
|
|
|
/// returns message for any errors
|
|
::std::string message() const;
|
|
|
|
/// returns true for MDBX's errors
|
|
constexpr bool is_mdbx_error() const noexcept;
|
|
[[noreturn]] void panic(const char *context_where,
|
|
const char *func_who) const noexcept;
|
|
[[noreturn]] void throw_exception() const;
|
|
[[noreturn]] static inline void throw_exception(int error_code);
|
|
inline void throw_on_failure() const;
|
|
inline void success_or_throw() const;
|
|
inline void success_or_throw(const exception_thunk &) const;
|
|
inline void panic_on_failure(const char *context_where,
|
|
const char *func_who) const noexcept;
|
|
inline void success_or_panic(const char *context_where,
|
|
const char *func_who) const noexcept;
|
|
static inline void throw_on_nullptr(const void *ptr, MDBX_error_t error_code);
|
|
static inline void success_or_throw(MDBX_error_t error_code);
|
|
static void success_or_throw(int error_code) {
|
|
success_or_throw(static_cast<MDBX_error_t>(error_code));
|
|
}
|
|
static inline void throw_on_failure(int error_code);
|
|
static inline bool boolean_or_throw(int error_code);
|
|
static inline void success_or_throw(int error_code, const exception_thunk &);
|
|
static inline void panic_on_failure(int error_code, const char *context_where,
|
|
const char *func_who) noexcept;
|
|
static inline void success_or_panic(int error_code, const char *context_where,
|
|
const char *func_who) noexcept;
|
|
};
|
|
|
|
// Base for libmdbx exceptions
|
|
class LIBMDBX_API_TYPE exception : public ::std::runtime_error {
|
|
using base = ::std::runtime_error;
|
|
error error_;
|
|
|
|
public:
|
|
exception(const error &) noexcept;
|
|
exception(const exception &) = default;
|
|
exception(exception &&) = default;
|
|
exception &operator=(const exception &) = default;
|
|
exception &operator=(exception &&) = default;
|
|
virtual ~exception() noexcept;
|
|
};
|
|
|
|
/** Fatal exception that lead termination anyway */
|
|
class LIBMDBX_API_TYPE fatal : public ::std::exception {
|
|
using base = ::std::exception;
|
|
error error_;
|
|
|
|
public:
|
|
fatal(const error &) noexcept;
|
|
fatal(const fatal &) noexcept;
|
|
fatal(fatal &&) noexcept;
|
|
fatal &operator=(fatal &&) = default;
|
|
fatal &operator=(const fatal &) = default;
|
|
virtual const char *what() const noexcept;
|
|
virtual ~fatal() noexcept;
|
|
};
|
|
|
|
#define MDBX_DECLARE_EXCEPTION(NAME) \
|
|
struct LIBMDBX_API_TYPE NAME : public exception { \
|
|
NAME(const error &); \
|
|
virtual ~NAME() noexcept; \
|
|
}
|
|
MDBX_DECLARE_EXCEPTION(bad_map_id);
|
|
MDBX_DECLARE_EXCEPTION(bad_transaction);
|
|
MDBX_DECLARE_EXCEPTION(bad_value_size);
|
|
MDBX_DECLARE_EXCEPTION(db_corrupted);
|
|
MDBX_DECLARE_EXCEPTION(db_full);
|
|
MDBX_DECLARE_EXCEPTION(db_invalid);
|
|
MDBX_DECLARE_EXCEPTION(db_too_large);
|
|
MDBX_DECLARE_EXCEPTION(db_unable_extend);
|
|
MDBX_DECLARE_EXCEPTION(db_version_mismatch);
|
|
MDBX_DECLARE_EXCEPTION(db_wanna_write_for_recovery);
|
|
MDBX_DECLARE_EXCEPTION(incompatible_operation);
|
|
MDBX_DECLARE_EXCEPTION(internal_page_full);
|
|
MDBX_DECLARE_EXCEPTION(internal_problem);
|
|
MDBX_DECLARE_EXCEPTION(key_exists);
|
|
MDBX_DECLARE_EXCEPTION(key_mismatch);
|
|
MDBX_DECLARE_EXCEPTION(max_maps_reached);
|
|
MDBX_DECLARE_EXCEPTION(max_readers_reached);
|
|
MDBX_DECLARE_EXCEPTION(multivalue);
|
|
MDBX_DECLARE_EXCEPTION(no_data);
|
|
MDBX_DECLARE_EXCEPTION(not_found);
|
|
MDBX_DECLARE_EXCEPTION(operation_not_permited);
|
|
MDBX_DECLARE_EXCEPTION(permission_denied_or_not_writeable);
|
|
MDBX_DECLARE_EXCEPTION(reader_slot_busy);
|
|
MDBX_DECLARE_EXCEPTION(remote_media);
|
|
MDBX_DECLARE_EXCEPTION(something_busy);
|
|
MDBX_DECLARE_EXCEPTION(thread_mismatch);
|
|
MDBX_DECLARE_EXCEPTION(transaction_full);
|
|
MDBX_DECLARE_EXCEPTION(transaction_overlapping);
|
|
#undef MDBX_DECLARE_EXCEPTION
|
|
|
|
[[noreturn]] LIBMDBX_API void throw_too_small_target_buffer();
|
|
[[noreturn]] LIBMDBX_API void throw_max_length_exceeded();
|
|
[[noreturn]] LIBMDBX_API void throw_out_range();
|
|
cxx14_constexpr size_t check_length(size_t bytes);
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
/// C++ wrapper for MDBX_val structure.
|
|
struct LIBMDBX_API_TYPE slice : public ::MDBX_val {
|
|
// TODO: slice& operator<<(slice&, ...) for reading
|
|
// TODO: key-to-value (parse/unpack) functions
|
|
// TODO: template<class X> key(X); for decoding keys while reading
|
|
|
|
enum { max_length = MDBX_MAXDATASIZE };
|
|
|
|
constexpr slice() noexcept;
|
|
cxx14_constexpr slice(const void *ptr, size_t bytes);
|
|
cxx14_constexpr slice(const void *begin, const void *end);
|
|
|
|
template <size_t SIZE>
|
|
cxx14_constexpr slice(const char (&text)[SIZE]) noexcept
|
|
: slice(text, SIZE - 1) {
|
|
static_assert(SIZE > 0 && text[SIZE - 1] == '\0',
|
|
"Must be a null-terminated C-string");
|
|
}
|
|
cxx17_constexpr slice(const char *c_str);
|
|
/* 'explicit' to avoid reference to the temporary std::string instance */
|
|
|
|
template <class C, class T, class A>
|
|
explicit cxx20_constexpr slice(const ::std::basic_string<C, T, A> &str)
|
|
: slice(str.data(), str.length() * sizeof(C)) {}
|
|
|
|
cxx14_constexpr slice(const MDBX_val &src);
|
|
constexpr slice(const slice &) noexcept = default;
|
|
#if defined(DOXYGEN) || \
|
|
(defined(__cpp_lib_string_view) && __cpp_lib_string_view >= 201606L)
|
|
template <class C, class T>
|
|
explicit cxx14_constexpr slice(const ::std::basic_string_view<C, T> &view)
|
|
: slice(view.data(), view.data() + view.length()) {}
|
|
#endif /* __cpp_lib_string_view >= 201606L */
|
|
|
|
inline slice(MDBX_val &&src);
|
|
inline slice(slice &&src) noexcept;
|
|
#if defined(DOXYGEN) || \
|
|
(defined(__cpp_lib_string_view) && __cpp_lib_string_view >= 201606L)
|
|
template <class C, class T>
|
|
slice(::std::basic_string_view<C, T> &&view) : slice(view) {
|
|
view = {};
|
|
}
|
|
#endif /* __cpp_lib_string_view >= 201606L */
|
|
|
|
template <size_t SIZE>
|
|
static cxx14_constexpr slice wrap(const char (&text)[SIZE]) {
|
|
return slice(text);
|
|
}
|
|
|
|
template <typename POD> cxx14_constexpr static slice wrap(const POD &pod) {
|
|
static_assert(::std::is_standard_layout<POD>::value &&
|
|
!std::is_pointer<POD>::value,
|
|
"Must be a standard layout type!");
|
|
return slice(&pod, sizeof(pod));
|
|
}
|
|
|
|
inline slice &assign(const void *ptr, size_t bytes);
|
|
inline slice &assign(const slice &src) noexcept;
|
|
inline slice &assign(const ::MDBX_val &src);
|
|
inline slice &assign(slice &&src) noexcept;
|
|
inline slice &assign(::MDBX_val &&src);
|
|
inline slice &assign(const void *begin, const void *end);
|
|
template <class C, class T, class A>
|
|
slice &assign(const ::std::basic_string<C, T, A> &str) {
|
|
return assign(str.data(), str.length() * sizeof(C));
|
|
}
|
|
inline slice &assign(const char *c_str);
|
|
#if defined(DOXYGEN) || \
|
|
(defined(__cpp_lib_string_view) && __cpp_lib_string_view >= 201606L)
|
|
template <class C, class T>
|
|
slice &assign(const ::std::basic_string_view<C, T> &view) {
|
|
return assign(view.begin(), view.end());
|
|
}
|
|
template <class C, class T>
|
|
slice &assign(::std::basic_string_view<C, T> &&view) {
|
|
assign(view);
|
|
view = {};
|
|
return *this;
|
|
}
|
|
#endif /* __cpp_lib_string_view >= 201606L */
|
|
|
|
slice &operator=(const slice &) noexcept = default;
|
|
inline slice &operator=(slice &&src) noexcept;
|
|
inline slice &operator=(::MDBX_val &&src);
|
|
#if defined(DOXYGEN) || \
|
|
(defined(__cpp_lib_string_view) && __cpp_lib_string_view >= 201606L)
|
|
template <class C, class T>
|
|
slice &operator=(const ::std::basic_string_view<C, T> &view) {
|
|
return assign(view);
|
|
}
|
|
template <class C, class T>
|
|
slice &operator=(::std::basic_string_view<C, T> &&view) {
|
|
return assign(view);
|
|
}
|
|
#endif /* __cpp_lib_string_view >= 201606L */
|
|
|
|
template <class C = char, class T = ::std::char_traits<C>,
|
|
class A = default_allocator>
|
|
cxx20_constexpr ::std::basic_string<C, T, A>
|
|
string(const A &allocator = A()) const {
|
|
static_assert(sizeof(C) == 1, "Must be single byte characters");
|
|
return ::std::basic_string<C, T, A>(char_ptr(), length(), allocator);
|
|
}
|
|
|
|
template <class C, class T, class A>
|
|
cxx20_constexpr operator ::std::basic_string<C, T, A>() const {
|
|
return this->string<C, T, A>();
|
|
}
|
|
|
|
char *to_hex(char *dest, size_t dest_size, bool uppercase = false,
|
|
unsigned wrap_width = 0) const;
|
|
constexpr size_t to_hex_bytes(unsigned wrap_width = 0) const noexcept {
|
|
const size_t bytes = length() << 1;
|
|
return wrap_width ? bytes + bytes / wrap_width : bytes;
|
|
}
|
|
|
|
byte *from_hex(byte *dest, size_t dest_size,
|
|
bool ignore_spaces = false) const;
|
|
constexpr size_t from_hex_bytes() const noexcept { return length() >> 1; }
|
|
|
|
char *to_base58(char *dest, size_t dest_size, unsigned wrap_width = 0) const;
|
|
constexpr size_t to_base58_bytes(unsigned wrap_width = 0) const noexcept {
|
|
const size_t bytes = length() / 8 * 11 + (length() % 8 * 43 + 31) / 32;
|
|
return wrap_width ? bytes + bytes / wrap_width : bytes;
|
|
}
|
|
|
|
byte *from_base58(byte *dest, size_t dest_size,
|
|
bool ignore_spaces = false) const;
|
|
constexpr size_t from_base58_bytes() const noexcept {
|
|
return length() / 11 * 8 + length() % 11 * 32 / 43;
|
|
}
|
|
|
|
char *to_base64(char *dest, size_t dest_size, unsigned wrap_width = 0) const;
|
|
constexpr size_t to_base64_bytes(unsigned wrap_width = 0) const noexcept {
|
|
const size_t bytes = (length() + 2) / 3 * 4;
|
|
return wrap_width ? bytes + bytes / wrap_width : bytes;
|
|
}
|
|
|
|
byte *from_base64(byte *dest, size_t dest_size,
|
|
bool ignore_spaces = false) const;
|
|
constexpr size_t from_base64_bytes() const noexcept {
|
|
return (length() + 3) / 4 * 3;
|
|
}
|
|
|
|
template <class ALLOCATOR = default_allocator>
|
|
inline ::mdbx::string<ALLOCATOR>
|
|
hex_encode(bool uppercase = false,
|
|
const ALLOCATOR &allocator = ALLOCATOR()) const;
|
|
template <class ALLOCATOR = default_allocator>
|
|
inline ::mdbx::string<ALLOCATOR>
|
|
hex_decode(const ALLOCATOR &allocator = ALLOCATOR()) const;
|
|
|
|
template <class ALLOCATOR = default_allocator>
|
|
inline ::mdbx::string<ALLOCATOR>
|
|
base58_encode(const ALLOCATOR &allocator = ALLOCATOR()) const;
|
|
template <class ALLOCATOR = default_allocator>
|
|
inline ::mdbx::string<ALLOCATOR>
|
|
base58_decode(const ALLOCATOR &allocator = ALLOCATOR()) const;
|
|
|
|
template <class ALLOCATOR = default_allocator>
|
|
inline ::mdbx::string<ALLOCATOR>
|
|
base64_encode(const ALLOCATOR &allocator = ALLOCATOR()) const;
|
|
template <class ALLOCATOR = default_allocator>
|
|
inline ::mdbx::string<ALLOCATOR>
|
|
base64_decode(const ALLOCATOR &allocator = ALLOCATOR()) const;
|
|
|
|
__nothrow_pure_function bool
|
|
is_printable(bool disable_utf8 = false) const noexcept;
|
|
__nothrow_pure_function bool
|
|
is_hex(bool ignore_spaces = false) const noexcept;
|
|
__nothrow_pure_function bool
|
|
is_base58(bool ignore_spaces = false) const noexcept;
|
|
__nothrow_pure_function bool
|
|
is_base64(bool ignore_spaces = false) const noexcept;
|
|
|
|
#if defined(DOXYGEN) || \
|
|
(defined(__cpp_lib_string_view) && __cpp_lib_string_view >= 201606L)
|
|
template <class C, class T>
|
|
constexpr explicit operator ::std::basic_string_view<C, T>() const noexcept {
|
|
static_assert(sizeof(C) == 1, "Must be single byte characters");
|
|
return ::std::basic_string_view<C, T>(char_ptr(), length());
|
|
}
|
|
template <class C = char, class T = ::std::char_traits<C>>
|
|
constexpr ::std::basic_string_view<C, T> string_view() const noexcept {
|
|
static_assert(sizeof(C) == 1, "Must be single byte characters");
|
|
return ::std::basic_string_view<C, T>(char_ptr(), length());
|
|
}
|
|
#endif /* __cpp_lib_string_view >= 201606L */
|
|
|
|
inline void swap(slice &other) noexcept;
|
|
#if defined(DOXYGEN) || \
|
|
(defined(__cpp_lib_string_view) && __cpp_lib_string_view >= 201606L)
|
|
template <class C, class T>
|
|
void swap(::std::basic_string_view<C, T> &view) noexcept {
|
|
static_assert(sizeof(C) == 1, "Must be single byte characters");
|
|
const auto temp = ::std::basic_string_view<C, T>(*this);
|
|
*this = view;
|
|
view = temp;
|
|
}
|
|
#endif /* __cpp_lib_string_view >= 201606L */
|
|
|
|
cxx17_constexpr static slice c_str(const char *str);
|
|
constexpr const byte *byte_ptr() const noexcept;
|
|
constexpr const char *char_ptr() const noexcept;
|
|
constexpr const void *data() const noexcept;
|
|
constexpr size_t length() const noexcept;
|
|
constexpr bool empty() const noexcept;
|
|
constexpr bool is_null() const noexcept;
|
|
constexpr size_t size() const noexcept;
|
|
constexpr operator bool() const noexcept;
|
|
|
|
inline void deplete() noexcept;
|
|
inline void reset() noexcept;
|
|
inline void remove_prefix(size_t n) noexcept;
|
|
inline void remove_suffix(size_t n) noexcept;
|
|
inline void safe_remove_prefix(size_t n);
|
|
inline void safe_remove_suffix(size_t n);
|
|
__nothrow_pure_function inline bool
|
|
starts_with(const slice &prefix) const noexcept;
|
|
__nothrow_pure_function inline bool
|
|
ends_with(const slice &suffix) const noexcept;
|
|
|
|
inline slice head(size_t n) const noexcept;
|
|
inline slice tail(size_t n) const noexcept;
|
|
inline slice middle(size_t from, size_t n) const noexcept;
|
|
inline slice safe_head(size_t n) const;
|
|
inline slice safe_tail(size_t n) const;
|
|
inline slice safe_middle(size_t from, size_t n) const;
|
|
|
|
__nothrow_pure_function cxx14_constexpr size_t hash_value() const noexcept;
|
|
__nothrow_pure_function static inline intptr_t
|
|
compare_fast(const slice &a, const slice &b) noexcept;
|
|
__nothrow_pure_function static inline intptr_t
|
|
compare_lexicographically(const slice &a, const slice &b) noexcept;
|
|
friend inline bool operator==(const slice &a, const slice &b) noexcept;
|
|
friend inline bool operator<(const slice &a, const slice &b) noexcept;
|
|
friend inline bool operator>(const slice &a, const slice &b) noexcept;
|
|
friend inline bool operator<=(const slice &a, const slice &b) noexcept;
|
|
friend inline bool operator>=(const slice &a, const slice &b) noexcept;
|
|
friend inline bool operator!=(const slice &a, const slice &b) noexcept;
|
|
|
|
constexpr bool is_valid() const noexcept {
|
|
return !(iov_base == nullptr && iov_len != 0);
|
|
}
|
|
constexpr static slice invalid() noexcept { return slice(size_t(-1)); }
|
|
|
|
protected:
|
|
constexpr slice(size_t invalid_lenght) noexcept
|
|
: ::MDBX_val({nullptr, invalid_lenght}) {}
|
|
};
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
/// Container of a value, which could be stored inside internal silo
|
|
/// or be a reference to an external stored one.
|
|
template <class ALLOCATOR = default_allocator> class buffer {
|
|
friend class txn_ref;
|
|
using silo = ::mdbx::string<ALLOCATOR>;
|
|
silo silo_;
|
|
slice slice_;
|
|
|
|
void insulate() {
|
|
assert(is_reference());
|
|
silo_.assign(slice_.char_ptr(), slice_.length());
|
|
slice_.iov_base = const_cast<char *>(silo_.data());
|
|
}
|
|
|
|
__nothrow_pure_function cxx20_constexpr const byte *
|
|
silo_begin() const noexcept {
|
|
return static_cast<const byte *>(static_cast<const void *>(silo_.data()));
|
|
}
|
|
|
|
__nothrow_pure_function cxx20_constexpr const byte *
|
|
silo_end() const noexcept {
|
|
return silo_begin() + silo_.capacity();
|
|
}
|
|
|
|
struct data_preserver : public exception_thunk {
|
|
static int callback(void *context, MDBX_val *target, const void *src,
|
|
size_t bytes) noexcept;
|
|
constexpr operator MDBX_preserve_func() const noexcept { return callback; }
|
|
};
|
|
|
|
public:
|
|
// TODO: buffer& operator<<(buffer&, ...) for writing
|
|
// TODO: buffer& operator>>(buffer&, ...) for reading (deletages to slice)
|
|
// TODO: template<class X> key(X) for encoding keys while writing
|
|
|
|
using allocator_type = ALLOCATOR;
|
|
enum : size_t {
|
|
max_length = MDBX_MAXDATASIZE,
|
|
default_shrink_treshold = 1024
|
|
};
|
|
|
|
cxx20_constexpr allocator_type get_allocator() const {
|
|
return silo_.get_allocator();
|
|
}
|
|
|
|
__nothrow_pure_function cxx20_constexpr bool
|
|
is_freestanding() const noexcept {
|
|
return size_t(byte_ptr() - silo_begin()) < silo_.capacity();
|
|
}
|
|
|
|
__nothrow_pure_function cxx20_constexpr bool is_reference() const noexcept {
|
|
return !is_freestanding();
|
|
}
|
|
|
|
__nothrow_pure_function cxx20_constexpr size_t capacity() const noexcept {
|
|
return is_freestanding() ? silo_.capacity() : 0;
|
|
}
|
|
|
|
__nothrow_pure_function cxx20_constexpr size_t headroom() const noexcept {
|
|
return is_freestanding() ? slice_.byte_ptr() - silo_begin() : 0;
|
|
}
|
|
|
|
__nothrow_pure_function cxx20_constexpr size_t tailroom() const noexcept {
|
|
return is_freestanding() ? capacity() - headroom() - slice_.length() : 0;
|
|
}
|
|
|
|
constexpr const byte *byte_ptr() const noexcept { return slice_.byte_ptr(); }
|
|
|
|
constexpr const char *char_ptr() const noexcept { return slice_.char_ptr(); }
|
|
|
|
constexpr const void *data() const noexcept { return slice_.data(); }
|
|
|
|
constexpr void *data() noexcept { return const_cast<void *>(slice_.data()); }
|
|
|
|
__nothrow_pure_function cxx20_constexpr size_t length() const noexcept {
|
|
return CONSTEXPR_ASSERT(is_reference() ||
|
|
slice_.length() + headroom() == silo_.length()),
|
|
slice_.length();
|
|
}
|
|
|
|
void make_freestanding() {
|
|
if (is_reference())
|
|
insulate();
|
|
}
|
|
|
|
buffer(const slice &src, bool make_reference,
|
|
const allocator_type &allocator = allocator_type())
|
|
: silo_(allocator), slice_(src) {
|
|
if (!make_reference)
|
|
insulate();
|
|
}
|
|
|
|
buffer(const buffer &src, bool make_reference,
|
|
const allocator_type &allocator = allocator_type())
|
|
: buffer(src.slice_, make_reference, allocator) {}
|
|
|
|
buffer(const void *ptr, size_t bytes, bool make_reference,
|
|
const allocator_type &allocator = allocator_type())
|
|
: buffer(slice(ptr, bytes), make_reference, allocator) {}
|
|
|
|
template <class C, class T, class A>
|
|
buffer(const ::std::basic_string<C, T, A> &str, bool make_reference,
|
|
const allocator_type &allocator = allocator_type())
|
|
: buffer(slice(str), make_reference, allocator) {}
|
|
|
|
buffer(const char *c_str, bool make_reference,
|
|
const allocator_type &allocator = allocator_type())
|
|
: buffer(slice(c_str), make_reference, allocator) {}
|
|
|
|
#if defined(DOXYGEN) || \
|
|
(defined(__cpp_lib_string_view) && __cpp_lib_string_view >= 201606L)
|
|
template <class C, class T>
|
|
buffer(const ::std::basic_string_view<C, T> &view, bool make_reference,
|
|
const allocator_type &allocator = allocator_type())
|
|
: buffer(slice(view), make_reference, allocator) {}
|
|
#endif /* __cpp_lib_string_view >= 201606L */
|
|
|
|
cxx20_constexpr buffer(const slice &src,
|
|
const allocator_type &allocator = allocator_type())
|
|
: silo_(src.char_ptr(), src.length(), allocator), slice_(silo_) {}
|
|
|
|
cxx20_constexpr buffer(const buffer &src,
|
|
const allocator_type &allocator = allocator_type())
|
|
: buffer(src.slice_, allocator) {}
|
|
|
|
cxx20_constexpr buffer(const void *ptr, size_t bytes,
|
|
const allocator_type &allocator = allocator_type())
|
|
: buffer(slice(ptr, bytes), allocator) {}
|
|
|
|
template <class C, class T, class A>
|
|
cxx20_constexpr buffer(const ::std::basic_string<C, T, A> &str,
|
|
const allocator_type &allocator = allocator_type())
|
|
: buffer(slice(str), allocator) {}
|
|
|
|
cxx20_constexpr buffer(const char *c_str,
|
|
const allocator_type &allocator = allocator_type())
|
|
: buffer(slice(c_str), allocator) {}
|
|
|
|
#if defined(DOXYGEN) || \
|
|
(defined(__cpp_lib_string_view) && __cpp_lib_string_view >= 201606L)
|
|
template <class C, class T>
|
|
cxx20_constexpr buffer(const ::std::basic_string_view<C, T> &view,
|
|
const allocator_type &allocator = allocator_type())
|
|
: buffer(slice(view), allocator) {}
|
|
#endif /* __cpp_lib_string_view >= 201606L */
|
|
|
|
inline buffer(size_t head_room, size_t tail_room,
|
|
const allocator_type &allocator = allocator_type());
|
|
|
|
inline buffer(size_t capacity,
|
|
const allocator_type &allocator = allocator_type());
|
|
|
|
inline buffer(size_t head_room, const slice &src, size_t tail_room,
|
|
const allocator_type &allocator = allocator_type());
|
|
|
|
buffer(size_t head_room, const buffer &src, size_t tail_room,
|
|
const allocator_type &allocator = allocator_type())
|
|
: buffer(head_room, src.slice_, tail_room, allocator) {}
|
|
|
|
cxx20_constexpr
|
|
buffer(const allocator_type &allocator = allocator_type()) noexcept
|
|
: silo_(allocator) {}
|
|
|
|
inline buffer(const txn_ref &txn, const slice &src,
|
|
const allocator_type &allocator = allocator_type());
|
|
|
|
buffer(buffer &&src) noexcept
|
|
: silo_(::std::move(src.silo_)), slice_(::std::move(src.slice_)) {}
|
|
|
|
buffer(silo &&str) noexcept : silo_(::std::move(str)), slice_(silo_) {}
|
|
|
|
constexpr const slice &ref() const noexcept { return slice_; }
|
|
|
|
constexpr operator const slice &() const noexcept { return slice_; }
|
|
|
|
template <typename POD>
|
|
static buffer wrap(const POD &pod, bool make_reference = false,
|
|
const allocator_type &allocator = allocator_type()) {
|
|
return buffer(slice::wrap(pod), make_reference, allocator);
|
|
}
|
|
|
|
inline void reserve(size_t wanna_headroom, size_t wanna_tailroom,
|
|
size_t shrink_threshold = default_shrink_treshold);
|
|
|
|
buffer &assign_reference(const void *ptr, size_t bytes) noexcept {
|
|
silo_.clear();
|
|
slice_.assign(ptr, bytes);
|
|
return *this;
|
|
}
|
|
|
|
buffer &assign_freestanding(const void *ptr, size_t bytes) {
|
|
silo_.assign(static_cast<const typename silo::value_type *>(ptr),
|
|
check_length(bytes));
|
|
slice_.assign(silo_);
|
|
return *this;
|
|
}
|
|
|
|
void swap(buffer &other)
|
|
#if defined(__cpp_noexcept_function_type) && \
|
|
__cpp_noexcept_function_type >= 201510L
|
|
noexcept(
|
|
std::allocator_traits<ALLOCATOR>::propagate_on_container_swap::value
|
|
#if defined(__cpp_lib_allocator_traits_is_always_equal) && \
|
|
__cpp_lib_allocator_traits_is_always_equal >= 201411L
|
|
|| std::allocator_traits<ALLOCATOR>::is_always_equal::value
|
|
#endif /* __cpp_lib_allocator_traits_is_always_equal */
|
|
)
|
|
#endif /* __cpp_noexcept_function_type */
|
|
;
|
|
|
|
buffer &assign(buffer &&src)
|
|
#if defined(__cpp_noexcept_function_type) && \
|
|
__cpp_noexcept_function_type >= 201510L
|
|
noexcept(std::allocator_traits<
|
|
ALLOCATOR>::propagate_on_container_move_assignment::value
|
|
#if defined(__cpp_lib_allocator_traits_is_always_equal) && \
|
|
__cpp_lib_allocator_traits_is_always_equal >= 201411L
|
|
|| std::allocator_traits<ALLOCATOR>::is_always_equal::value
|
|
#endif /* __cpp_lib_allocator_traits_is_always_equal */
|
|
)
|
|
#endif /* __cpp_noexcept_function_type */
|
|
{
|
|
silo_.assign(::std::move(src.silo_));
|
|
slice_.assign(::std::move(src.slice_));
|
|
return *this;
|
|
}
|
|
|
|
buffer &assign(silo &&src)
|
|
#if defined(__cpp_noexcept_function_type) && \
|
|
__cpp_noexcept_function_type >= 201510L
|
|
noexcept(std::allocator_traits<
|
|
ALLOCATOR>::propagate_on_container_move_assignment::value
|
|
#if defined(__cpp_lib_allocator_traits_is_always_equal) && \
|
|
__cpp_lib_allocator_traits_is_always_equal >= 201411L
|
|
|| std::allocator_traits<ALLOCATOR>::is_always_equal::value
|
|
#endif /* __cpp_lib_allocator_traits_is_always_equal */
|
|
)
|
|
#endif /* __cpp_noexcept_function_type */
|
|
{
|
|
return assign(buffer(::std::move(src)));
|
|
}
|
|
|
|
static buffer
|
|
frestanding_clone(const buffer &src,
|
|
const allocator_type &allocator = allocator_type()) {
|
|
return buffer(src.headroom(), src.slice_, src.tailroom(), allocator);
|
|
}
|
|
|
|
buffer &assign(const buffer &src, bool make_reference = false) {
|
|
return assign(src.slice_, make_reference);
|
|
}
|
|
|
|
buffer &assign(const void *ptr, size_t bytes, bool make_reference = false) {
|
|
return make_reference ? assign_reference(ptr, bytes)
|
|
: assign_freestanding(ptr, bytes);
|
|
}
|
|
|
|
buffer &assign(const slice &src, bool make_reference = false) {
|
|
return assign(src.data(), src.length(), make_reference);
|
|
}
|
|
|
|
buffer &assign(const ::MDBX_val &src, bool make_reference = false) {
|
|
return assign(src.iov_base, src.iov_len, make_reference);
|
|
}
|
|
|
|
buffer &assign(slice &&src, bool make_reference = false) {
|
|
assign(src.data(), src.length(), make_reference);
|
|
src.deplete();
|
|
return *this;
|
|
}
|
|
|
|
buffer &assign(::MDBX_val &&src, bool make_reference = false) {
|
|
assign(src.iov_base, src.iov_len, make_reference);
|
|
src.iov_base = nullptr;
|
|
return *this;
|
|
}
|
|
|
|
buffer &assign(const void *begin, const void *end,
|
|
bool make_reference = false) {
|
|
return assign(begin,
|
|
static_cast<const byte *>(end) -
|
|
static_cast<const byte *>(begin),
|
|
make_reference);
|
|
}
|
|
|
|
template <class C, class T, class A>
|
|
buffer &assign(const ::std::basic_string<C, T, A> &str,
|
|
bool make_reference = false) {
|
|
return assign(str.data(), str.length(), make_reference);
|
|
}
|
|
|
|
buffer &assign(const char *c_str, bool make_reference = false) {
|
|
return assign(c_str, ::mdbx::strlen(c_str), make_reference);
|
|
}
|
|
|
|
#if defined(__cpp_lib_string_view) && __cpp_lib_string_view >= 201606L
|
|
template <class C, class T>
|
|
buffer &assign(const ::std::basic_string_view<C, T> &view,
|
|
bool make_reference = false) {
|
|
return assign(view.data(), view.length(), make_reference);
|
|
}
|
|
|
|
template <class C, class T>
|
|
buffer &assign(::std::basic_string_view<C, T> &&view,
|
|
bool make_reference = false) {
|
|
assign(view.data(), view.length(), make_reference);
|
|
view = {};
|
|
return *this;
|
|
}
|
|
#endif /* __cpp_lib_string_view >= 201606L */
|
|
|
|
buffer &operator=(const buffer &src) { return assign(src); }
|
|
|
|
buffer &operator=(buffer &&src) noexcept { return assign(::std::move(src)); }
|
|
|
|
buffer &operator=(silo &&src) noexcept { return assign(::std::move(src)); }
|
|
|
|
buffer &operator=(const slice &src) { return assign(src); }
|
|
|
|
buffer &operator=(slice &&src) { return assign(::std::move(src)); }
|
|
|
|
#if defined(DOXYGEN) || \
|
|
(defined(__cpp_lib_string_view) && __cpp_lib_string_view >= 201606L)
|
|
template <class C, class T>
|
|
buffer &operator=(const ::std::basic_string_view<C, T> &view) noexcept {
|
|
return assign(view);
|
|
}
|
|
|
|
template <class C = char, class T = ::std::char_traits<C>>
|
|
::std::basic_string_view<C, T> string_view() const noexcept {
|
|
return slice_.string_view<C, T>();
|
|
}
|
|
|
|
template <class C, class T>
|
|
operator ::std::basic_string_view<C, T>() const noexcept {
|
|
return string_view<C, T>();
|
|
}
|
|
#endif /* __cpp_lib_string_view >= 201606L */
|
|
|
|
static buffer decode_hex(const slice &hex,
|
|
const allocator_type &allocator = allocator_type()) {
|
|
#if __cplusplus >= 201703L
|
|
return buffer(hex.hex_decode(allocator));
|
|
#else
|
|
silo data(hex.hex_decode(allocator));
|
|
return buffer(::std::move(data));
|
|
#endif
|
|
}
|
|
|
|
static buffer encode_hex(const slice &data, bool uppercase = false,
|
|
const allocator_type &allocator = allocator_type()) {
|
|
#if __cplusplus >= 201703L
|
|
return buffer(data.hex_encode(uppercase, allocator));
|
|
#else
|
|
silo hex(data.hex_encode(uppercase, allocator));
|
|
return buffer(::std::move(hex));
|
|
#endif
|
|
}
|
|
|
|
static buffer
|
|
decode_base58(const slice &base58,
|
|
const allocator_type &allocator = allocator_type()) {
|
|
#if __cplusplus >= 201703L
|
|
return buffer(base58.base58_decode(allocator));
|
|
#else
|
|
silo data(base58.base58_decode(allocator));
|
|
return buffer(::std::move(data));
|
|
#endif
|
|
}
|
|
|
|
static buffer
|
|
encode_base58(const slice &data,
|
|
const allocator_type &allocator = allocator_type()) {
|
|
#if __cplusplus >= 201703L
|
|
return buffer(data.base58_encode(allocator));
|
|
#else
|
|
silo base58(data.base58_encode(allocator));
|
|
return buffer(::std::move(base58));
|
|
#endif
|
|
}
|
|
|
|
static buffer
|
|
decode_base64(const slice &base64,
|
|
const allocator_type &allocator = allocator_type()) {
|
|
#if __cplusplus >= 201703L
|
|
return buffer(base64.base64_decode(allocator));
|
|
#else
|
|
silo data(base64.base64_decode(allocator));
|
|
return buffer(::std::move(data));
|
|
#endif
|
|
}
|
|
|
|
static buffer
|
|
encode_base64(const slice &data,
|
|
const allocator_type &allocator = allocator_type()) {
|
|
#if __cplusplus >= 201703L
|
|
return buffer(data.base64_encode(allocator));
|
|
#else
|
|
silo base64(data.base64_encode(allocator));
|
|
return buffer(::std::move(base64));
|
|
#endif
|
|
}
|
|
|
|
__nothrow_pure_function cxx20_constexpr bool empty() const noexcept {
|
|
return length() == 0;
|
|
}
|
|
|
|
constexpr bool is_null() const noexcept { return data() == nullptr; }
|
|
|
|
__nothrow_pure_function cxx20_constexpr size_t size() const noexcept {
|
|
return length();
|
|
}
|
|
|
|
__nothrow_pure_function cxx14_constexpr size_t hash_value() const noexcept {
|
|
return slice_.hash_value();
|
|
}
|
|
|
|
template <class C = char, class T = ::std::char_traits<C>,
|
|
class A = default_allocator>
|
|
cxx20_constexpr ::std::basic_string<C, T, A>
|
|
string(const A &allocator = A()) const {
|
|
return slice_.string<C, T, A>(allocator);
|
|
}
|
|
|
|
template <class C, class T, class A>
|
|
cxx20_constexpr operator ::std::basic_string<C, T, A>() const {
|
|
return this->string<C, T, A>();
|
|
}
|
|
|
|
__nothrow_pure_function bool starts_with(const slice &prefix) const noexcept {
|
|
return slice_.starts_with(prefix);
|
|
}
|
|
|
|
__nothrow_pure_function bool ends_with(const slice &suffix) const noexcept {
|
|
return slice_.ends_with(suffix);
|
|
}
|
|
|
|
void clear() noexcept {
|
|
slice_.reset();
|
|
silo_.clear();
|
|
}
|
|
|
|
void shrink_to_fit(size_t threshold = 64) { reserve(0, 0, threshold); }
|
|
|
|
void remove_prefix(size_t n) noexcept { slice_.remove_prefix(n); }
|
|
|
|
void remove_suffix(size_t n) noexcept { slice_.remove_suffix(n); }
|
|
|
|
void safe_remove_prefix(size_t n) { slice_.safe_remove_prefix(n); }
|
|
|
|
void safe_remove_suffix(size_t n) { slice_.safe_remove_suffix(n); }
|
|
|
|
slice head(size_t n) const noexcept { return slice_.head(n); }
|
|
|
|
slice tail(size_t n) const noexcept { return slice_.tail(n); }
|
|
|
|
slice middle(size_t from, size_t n) const noexcept {
|
|
return slice_.middle(from, n);
|
|
}
|
|
|
|
slice safe_head(size_t n) const { return slice_.safe_head(n); }
|
|
|
|
slice safe_tail(size_t n) const { return slice_.safe_tail(n); }
|
|
|
|
slice safe_middle(size_t from, size_t n) const {
|
|
return slice_.safe_middle(from, n);
|
|
}
|
|
|
|
inline buffer &append(const void *src, size_t bytes);
|
|
|
|
inline buffer &append(const slice &chunk) {
|
|
return append(chunk.data(), chunk.size());
|
|
}
|
|
|
|
inline buffer &add_header(const void *src, size_t bytes);
|
|
|
|
inline buffer &add_header(const slice &chunk) {
|
|
return add_header(chunk.data(), chunk.size());
|
|
}
|
|
|
|
//----------------------------------------------------------------------------
|
|
|
|
template <size_t SIZE>
|
|
static buffer key_from(const char (&text)[SIZE], bool make_reference = true) {
|
|
return buffer(slice(text), make_reference);
|
|
}
|
|
|
|
#if defined(DOXYGEN) || \
|
|
(defined(__cpp_lib_string_view) && __cpp_lib_string_view >= 201606L)
|
|
template <class C, class T>
|
|
static buffer key_from(const ::std::basic_string_view<C, T> &src,
|
|
bool make_reference = false) {
|
|
return buffer(src, make_reference);
|
|
}
|
|
#endif /* __cpp_lib_string_view >= 201606L */
|
|
|
|
static buffer key_from(const char *src, bool make_reference = false) {
|
|
return buffer(src, make_reference);
|
|
}
|
|
|
|
template <class C, class T, class A>
|
|
static buffer key_from(const ::std::basic_string<C, T, A> &src,
|
|
bool make_reference = false) {
|
|
return buffer(src, make_reference);
|
|
}
|
|
|
|
static buffer key_from(const silo &&src) noexcept {
|
|
return buffer(::std::move(src));
|
|
}
|
|
|
|
static buffer key_from(const double ieee754_64bit) {
|
|
return wrap(::mdbx_key_from_double(ieee754_64bit));
|
|
}
|
|
|
|
static buffer key_from(const double *ieee754_64bit) {
|
|
return wrap(::mdbx_key_from_ptrdouble(ieee754_64bit));
|
|
}
|
|
|
|
static buffer key_from(const uint64_t unsigned_int64) {
|
|
return wrap(unsigned_int64);
|
|
}
|
|
|
|
static buffer key_from(const int64_t signed_int64) {
|
|
return wrap(::mdbx_key_from_int64(signed_int64));
|
|
}
|
|
|
|
static buffer key_from_jsonInteger(const int64_t json_integer) {
|
|
return wrap(::mdbx_key_from_jsonInteger(json_integer));
|
|
}
|
|
|
|
static buffer key_from(const float ieee754_32bit) {
|
|
return wrap(::mdbx_key_from_float(ieee754_32bit));
|
|
}
|
|
|
|
static buffer key_from(const float *ieee754_32bit) {
|
|
return wrap(::mdbx_key_from_ptrfloat(ieee754_32bit));
|
|
}
|
|
|
|
static buffer key_from(const uint32_t unsigned_int32) {
|
|
return wrap(unsigned_int32);
|
|
}
|
|
|
|
static buffer key_from(const int32_t signed_int32) {
|
|
return wrap(::mdbx_key_from_int32(signed_int32));
|
|
}
|
|
};
|
|
|
|
struct value_result {
|
|
slice value;
|
|
bool done;
|
|
constexpr operator bool() const noexcept { return done; }
|
|
};
|
|
|
|
struct pair {
|
|
slice key;
|
|
slice value;
|
|
constexpr operator bool() const noexcept { return key; }
|
|
};
|
|
|
|
struct pair_result : public pair {
|
|
bool done;
|
|
constexpr operator bool() const noexcept { return done; }
|
|
};
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
enum enumeration_loop_control { continue_loop = 0, exit_loop = INT32_MIN };
|
|
|
|
enum class key_mode {
|
|
usual = MDBX_DB_DEFAULTS,
|
|
reverse = MDBX_REVERSEKEY,
|
|
ordinal = MDBX_INTEGERKEY
|
|
};
|
|
|
|
enum class value_mode {
|
|
solitary = MDBX_DB_DEFAULTS,
|
|
multi = MDBX_DUPSORT,
|
|
#if defined(__cplusplus) && defined(_MSC_VER) && _MSC_VER < 1910
|
|
multi_reverse = uint32_t(MDBX_DUPSORT) | uint32_t(MDBX_REVERSEDUP),
|
|
multi_samelength = uint32_t(MDBX_DUPSORT) | uint32_t(MDBX_DUPFIXED),
|
|
multi_ordinal = uint32_t(MDBX_DUPSORT) | uint32_t(MDBX_DUPFIXED) |
|
|
uint32_t(MDBX_INTEGERDUP),
|
|
multi_reverse_samelength = uint32_t(MDBX_DUPSORT) |
|
|
uint32_t(MDBX_REVERSEDUP) | uint32_t(MDBX_DUPFIXED)
|
|
#else
|
|
multi_reverse = MDBX_DUPSORT | MDBX_REVERSEDUP,
|
|
multi_samelength = MDBX_DUPSORT | MDBX_DUPFIXED,
|
|
multi_ordinal = MDBX_DUPSORT | MDBX_DUPFIXED | MDBX_INTEGERDUP,
|
|
multi_reverse_samelength = MDBX_DUPSORT | MDBX_REVERSEDUP | MDBX_DUPFIXED
|
|
#endif
|
|
};
|
|
|
|
struct LIBMDBX_API_TYPE map_handle {
|
|
MDBX_dbi dbi{0};
|
|
constexpr map_handle() noexcept {}
|
|
constexpr map_handle(MDBX_dbi dbi) noexcept : dbi(dbi) {}
|
|
map_handle(const map_handle &) noexcept = default;
|
|
map_handle &operator=(const map_handle &) noexcept = default;
|
|
|
|
using flags = ::MDBX_db_flags_t;
|
|
using state = ::MDBX_dbi_state_t;
|
|
struct LIBMDBX_API_TYPE info {
|
|
map_handle::flags flags;
|
|
map_handle::state state;
|
|
constexpr info(map_handle::flags flags, map_handle::state state) noexcept;
|
|
info(const info &) noexcept = default;
|
|
info &operator=(const info &) noexcept = default;
|
|
constexpr ::mdbx::key_mode key_mode() const noexcept;
|
|
constexpr ::mdbx::value_mode value_mode() const noexcept;
|
|
};
|
|
};
|
|
|
|
enum put_mode {
|
|
insert = MDBX_NOOVERWRITE,
|
|
upsert = MDBX_UPSERT,
|
|
update = MDBX_CURRENT,
|
|
};
|
|
|
|
class LIBMDBX_API_TYPE env_ref {
|
|
friend class txn_ref;
|
|
|
|
protected:
|
|
MDBX_env *handle_{nullptr};
|
|
constexpr env_ref(MDBX_env *ptr) noexcept;
|
|
|
|
public:
|
|
constexpr env_ref() noexcept = default;
|
|
env_ref(const env_ref &) noexcept = default;
|
|
inline env_ref &operator=(env_ref &&other) noexcept;
|
|
inline env_ref(env_ref &&other) noexcept;
|
|
inline ~env_ref() noexcept;
|
|
|
|
constexpr operator bool() const noexcept;
|
|
constexpr operator const MDBX_env *() const;
|
|
inline operator MDBX_env *();
|
|
friend constexpr bool operator==(const env_ref &a, const env_ref &b) noexcept;
|
|
friend constexpr bool operator!=(const env_ref &a, const env_ref &b) noexcept;
|
|
|
|
//----------------------------------------------------------------------------
|
|
|
|
struct LIBMDBX_API_TYPE geometry {
|
|
enum : int64_t {
|
|
default_value = -1,
|
|
minimal_value = 0,
|
|
maximal_value = INTPTR_MAX,
|
|
kB = 1000, ///< \f$10^{3}\f$ bytes
|
|
MB = kB * 1000, ///< \f$10^{6}\f$ bytes
|
|
GB = MB * 1000, ///< \f$10^{9}\f$ bytes
|
|
TB = GB * 1000, ///< \f$10^{12}\f$ bytes
|
|
PB = TB * 1000, ///< \f$10^{15}\f$ bytes
|
|
EB = PB * 1000, ///< \f$10^{18}\f$ bytes
|
|
KiB = 1024, ///< \f$2^{10}\f$ bytes
|
|
MiB = KiB << 10, ///< \f$2^{20}\f$ bytes
|
|
GiB = MiB << 10, ///< \f$2^{30}\f$ bytes
|
|
TiB = GiB << 10, ///< \f$2^{40}\f$ bytes
|
|
PiB = TiB << 10, ///< \f$2^{50}\f$ bytes
|
|
EiB = PiB << 10, ///< \f$2^{60}\f$ bytes
|
|
};
|
|
|
|
/// Tagged type for output to std::ostream
|
|
struct size {
|
|
intptr_t bytes;
|
|
constexpr size(intptr_t bytes) noexcept : bytes(bytes) {}
|
|
operator intptr_t() const noexcept { return bytes; }
|
|
};
|
|
|
|
intptr_t size_lower{minimal_value};
|
|
intptr_t size_now{default_value};
|
|
intptr_t size_upper{maximal_value};
|
|
intptr_t growth_step{default_value};
|
|
intptr_t shrink_threshold{default_value};
|
|
intptr_t pagesize{default_value};
|
|
inline geometry &make_fixed(intptr_t size) noexcept;
|
|
inline geometry &make_dynamic(intptr_t lower = minimal_value,
|
|
intptr_t upper = maximal_value) noexcept;
|
|
};
|
|
|
|
enum mode {
|
|
readonly,
|
|
write_file_io, // don't available on OpenBSD
|
|
write_mapped_io
|
|
};
|
|
|
|
enum durability {
|
|
robust_synchronous,
|
|
half_synchronous_weak_last,
|
|
lazy_weak_tail,
|
|
whole_fragile
|
|
};
|
|
|
|
struct LIBMDBX_API_TYPE reclaiming_options {
|
|
bool lifo{false};
|
|
bool coalesce{false};
|
|
constexpr reclaiming_options() noexcept {}
|
|
reclaiming_options(MDBX_env_flags_t) noexcept;
|
|
};
|
|
|
|
struct LIBMDBX_API_TYPE operate_options {
|
|
bool orphan_read_transactions{false};
|
|
bool nested_write_transactions{false};
|
|
bool exclusive{false};
|
|
bool disable_readahead{false};
|
|
bool disable_clear_memory{false};
|
|
constexpr operate_options() noexcept {}
|
|
operate_options(MDBX_env_flags_t) noexcept;
|
|
};
|
|
|
|
struct LIBMDBX_API_TYPE operate_parameters {
|
|
unsigned max_maps{0};
|
|
unsigned max_readers{0};
|
|
env_ref::mode mode{write_mapped_io};
|
|
env_ref::durability durability{robust_synchronous};
|
|
env_ref::reclaiming_options reclaiming;
|
|
env_ref::operate_options options;
|
|
|
|
constexpr operate_parameters() noexcept {}
|
|
MDBX_env_flags_t make_flags(bool accede = true,
|
|
bool use_subdirectory = false) const;
|
|
static env_ref::mode mode_from_flags(MDBX_env_flags_t) noexcept;
|
|
static env_ref::durability durability_from_flags(MDBX_env_flags_t) noexcept;
|
|
inline static env_ref::reclaiming_options
|
|
reclaiming_from_flags(MDBX_env_flags_t flags) noexcept;
|
|
inline static env_ref::operate_options
|
|
options_from_flags(MDBX_env_flags_t flags) noexcept;
|
|
operate_parameters(const env_ref &);
|
|
};
|
|
|
|
inline env_ref::operate_parameters get_operation_parameters() const;
|
|
inline env_ref::mode get_mode() const;
|
|
inline env_ref::durability get_durability() const;
|
|
inline env_ref::reclaiming_options get_reclaiming() const;
|
|
inline env_ref::operate_options get_options() const;
|
|
|
|
struct create_parameters {
|
|
env_ref::geometry geometry;
|
|
mdbx_mode_t file_mode_bits{0640};
|
|
bool use_subdirectory{false};
|
|
};
|
|
|
|
/// Returns true for a freshly created database,
|
|
/// but false if at least one transaction was committed.
|
|
bool is_pristine() const;
|
|
|
|
/// Returns true for an empty database.
|
|
bool is_empty() const;
|
|
|
|
static size_t default_pagesize() noexcept;
|
|
struct limits {
|
|
limits() = delete;
|
|
static inline size_t pagesize_min() noexcept;
|
|
static inline size_t pagesize_max() noexcept;
|
|
static inline size_t dbsize_min(intptr_t pagesize);
|
|
static inline size_t dbsize_max(intptr_t pagesize);
|
|
static inline size_t key_min(MDBX_db_flags_t flags);
|
|
static inline size_t key_max(intptr_t pagesize, MDBX_db_flags_t flags);
|
|
static inline size_t key_max(const env_ref &, MDBX_db_flags_t flags);
|
|
static inline size_t value_min(MDBX_db_flags_t flags);
|
|
static inline size_t value_max(intptr_t pagesize, MDBX_db_flags_t flags);
|
|
static inline size_t value_max(const env_ref &, MDBX_db_flags_t flags);
|
|
static inline size_t transaction_size_max(intptr_t pagesize);
|
|
};
|
|
|
|
env_ref ©(const path &destination, bool compactify,
|
|
bool force_dynamic_size = false);
|
|
env_ref ©(filehandle fd, bool compactify,
|
|
bool force_dynamic_size = false);
|
|
|
|
using stat = ::MDBX_stat;
|
|
using info = ::MDBX_envinfo;
|
|
inline stat get_stat() const;
|
|
inline info get_info() const;
|
|
inline stat get_stat(const txn_ref &) const;
|
|
inline info get_info(const txn_ref &) const;
|
|
inline filehandle get_filehandle() const;
|
|
path get_path() const;
|
|
inline MDBX_env_flags_t get_flags() const;
|
|
inline unsigned max_readers() const;
|
|
inline unsigned max_maps() const;
|
|
inline void *get_context() const noexcept;
|
|
inline env_ref &set_context(void *);
|
|
inline env_ref &set_sync_threshold(size_t bytes);
|
|
inline env_ref &set_sync_period(unsigned seconds_16dot16);
|
|
inline env_ref &set_sync_period(double seconds);
|
|
inline env_ref &alter_flags(MDBX_env_flags_t flags, bool on_off);
|
|
inline env_ref &set_geometry(const geometry &size);
|
|
inline env_ref &set_max_maps(unsigned maps);
|
|
inline env_ref &sync_to_disk();
|
|
inline env_ref &sync_to_disk(bool force, bool nonblock);
|
|
inline bool poll_sync_to_disk();
|
|
inline void close_map(const map_handle &handle_);
|
|
|
|
struct reader_info {
|
|
int slot;
|
|
mdbx_pid_t pid;
|
|
mdbx_tid_t thread;
|
|
uint64_t transaction_id;
|
|
uint64_t transaction_lag;
|
|
size_t bytes_used;
|
|
size_t bytes_retained;
|
|
constexpr reader_info(int slot, mdbx_pid_t pid, mdbx_tid_t thread,
|
|
uint64_t txnid, uint64_t lag, size_t used,
|
|
size_t retained) noexcept;
|
|
};
|
|
|
|
/// enumerate readers
|
|
/// through visitor.operator(const reader_info&, int number)
|
|
template <typename VISITOR> inline int enumerate_readers(VISITOR &visitor);
|
|
|
|
/// Checks for stale readers in the lock tablea and
|
|
/// return number of cleared slots
|
|
inline unsigned check_readers();
|
|
|
|
inline env_ref &set_OutOfSpace_callback(MDBX_oom_func *);
|
|
inline MDBX_oom_func *get_OutOfSpace_callback() const noexcept;
|
|
inline txn start_read() const;
|
|
inline txn prepare_read() const;
|
|
inline txn start_write(bool dont_wait = false);
|
|
inline txn try_start_write();
|
|
};
|
|
|
|
class LIBMDBX_API_TYPE env : public env_ref {
|
|
using inherited = env_ref;
|
|
/// delegated constructor for RAII
|
|
constexpr env(MDBX_env *ptr) noexcept : inherited(ptr) {}
|
|
void setup(unsigned max_maps, unsigned max_readers = 0);
|
|
|
|
public:
|
|
constexpr env() noexcept = default;
|
|
|
|
/// Open existing database
|
|
env(const path &, const operate_parameters &, bool accede = true);
|
|
|
|
/// Create new or open existing database
|
|
env(const path &, const create_parameters &, const operate_parameters &,
|
|
bool accede = true);
|
|
|
|
void close(bool dont_sync = false);
|
|
env(env &&) = default;
|
|
env &operator=(env &&) = default;
|
|
env(const env &) = delete;
|
|
env &operator=(const env &) = delete;
|
|
virtual ~env() noexcept;
|
|
};
|
|
|
|
class LIBMDBX_API_TYPE txn_ref {
|
|
protected:
|
|
friend class cursor_ref;
|
|
MDBX_txn *handle_{nullptr};
|
|
constexpr txn_ref(MDBX_txn *ptr) noexcept;
|
|
|
|
public:
|
|
constexpr txn_ref() noexcept = default;
|
|
txn_ref(const txn_ref &) noexcept = default;
|
|
inline txn_ref &operator=(txn_ref &&other) noexcept;
|
|
inline txn_ref(txn_ref &&other) noexcept;
|
|
inline ~txn_ref() noexcept;
|
|
|
|
constexpr operator bool() const noexcept;
|
|
constexpr operator const MDBX_txn *() const;
|
|
inline operator MDBX_txn *();
|
|
friend constexpr bool operator==(const txn_ref &a, const txn_ref &b) noexcept;
|
|
friend constexpr bool operator!=(const txn_ref &a, const txn_ref &b) noexcept;
|
|
|
|
inline ::mdbx::env_ref env() const noexcept;
|
|
inline MDBX_txn_flags_t flags() const;
|
|
inline uint64_t id() const;
|
|
inline bool is_dirty(const void *ptr) const;
|
|
|
|
using info = ::MDBX_txn_info;
|
|
inline info get_info(bool scan_reader_lock_table = false) const;
|
|
|
|
//----------------------------------------------------------------------------
|
|
|
|
/// Reset a read-only transaction.
|
|
inline void reset_reading();
|
|
|
|
/// Renew a read-only transaction.
|
|
inline void renew_reading();
|
|
|
|
/// Start nested write transaction
|
|
txn start_nested();
|
|
|
|
inline cursor create_cursor(map_handle map);
|
|
|
|
/// Open existing key-value map
|
|
inline map_handle open_map(
|
|
const char *name,
|
|
const ::mdbx::key_mode key_mode = ::mdbx::key_mode::usual,
|
|
const ::mdbx::value_mode value_mode = ::mdbx::value_mode::solitary) const;
|
|
inline map_handle open_map(
|
|
const ::std::string &name,
|
|
const ::mdbx::key_mode key_mode = ::mdbx::key_mode::usual,
|
|
const ::mdbx::value_mode value_mode = ::mdbx::value_mode::solitary) const;
|
|
|
|
/// Create new or open existing key-value map
|
|
inline map_handle create_map(
|
|
const char *name,
|
|
const ::mdbx::key_mode key_mode = ::mdbx::key_mode::usual,
|
|
const ::mdbx::value_mode value_mode = ::mdbx::value_mode::solitary);
|
|
inline map_handle create_map(
|
|
const ::std::string &name,
|
|
const ::mdbx::key_mode key_mode = ::mdbx::key_mode::usual,
|
|
const ::mdbx::value_mode value_mode = ::mdbx::value_mode::solitary);
|
|
|
|
/// Drop key-value map
|
|
inline void drop_map(map_handle map);
|
|
bool drop_map(const char *name, bool ignore_nonexists = true);
|
|
inline bool drop_map(const ::std::string &name, bool ignore_nonexists = true);
|
|
|
|
/// Clear key-value map
|
|
inline void clear_map(map_handle map);
|
|
bool clear_map(const char *name, bool ignore_nonexists = true);
|
|
inline bool clear_map(const ::std::string &name,
|
|
bool ignore_nonexists = true);
|
|
|
|
using map_stat = ::MDBX_stat;
|
|
inline map_stat get_map_stat(map_handle map) const;
|
|
inline uint32_t get_tree_deepmask(map_handle map) const;
|
|
inline map_handle::info get_handle_info(map_handle map) const;
|
|
|
|
using canary = ::MDBX_canary;
|
|
inline txn_ref &put_canary(const canary &);
|
|
inline canary get_canary() const;
|
|
inline uint64_t sequence(map_handle map) const;
|
|
inline uint64_t sequence(map_handle map, uint64_t increment);
|
|
|
|
inline int compare_keys(map_handle map, const slice &a,
|
|
const slice &b) const noexcept;
|
|
inline int compare_values(map_handle map, const slice &a,
|
|
const slice &b) const noexcept;
|
|
inline int compare_keys(map_handle map, const pair &a,
|
|
const pair &b) const noexcept;
|
|
inline int compare_values(map_handle map, const pair &a,
|
|
const pair &b) const noexcept;
|
|
|
|
inline slice get(map_handle map, const slice &key) const;
|
|
inline slice get(map_handle map, slice key, size_t &values_count) const;
|
|
inline slice get(map_handle map, const slice &key,
|
|
const slice &if_not_exists) const;
|
|
inline slice get(map_handle map, slice key, size_t &values_count,
|
|
const slice &if_not_exists) const;
|
|
inline pair get_equal_or_great(map_handle map, const slice &key) const;
|
|
inline pair get_equal_or_great(map_handle map, const slice &key,
|
|
const slice &if_not_exists) const;
|
|
|
|
inline MDBX_error_t put(map_handle map, const slice &key, slice *value,
|
|
MDBX_put_flags_t flags) noexcept;
|
|
inline void insert(map_handle map, const slice &key, slice value);
|
|
inline value_result try_insert(map_handle map, const slice &key, slice value);
|
|
inline slice insert_reserve(map_handle map, const slice &key,
|
|
size_t value_length);
|
|
inline value_result try_insert_reserve(map_handle map, const slice &key,
|
|
size_t value_length);
|
|
|
|
inline void upsert(map_handle map, const slice &key, const slice &value);
|
|
inline slice upsert_reserve(map_handle map, const slice &key,
|
|
size_t value_length);
|
|
|
|
inline void update(map_handle map, const slice &key, const slice &value);
|
|
inline bool try_update(map_handle map, const slice &key, const slice &value);
|
|
inline slice update_reserve(map_handle map, const slice &key,
|
|
size_t value_length);
|
|
inline value_result try_update_reserve(map_handle map, const slice &key,
|
|
size_t value_length);
|
|
|
|
inline bool erase(map_handle map, const slice &key);
|
|
/// Removes the particular multi-value of the key
|
|
inline bool erase(map_handle map, const slice &key, const slice &value);
|
|
/// Replaces the particular multi-value of the key with a new value
|
|
inline void replace(map_handle map, const slice &key, slice old_value,
|
|
const slice &new_value);
|
|
|
|
/// Removes and return a value of the key
|
|
template <class ALLOCATOR>
|
|
inline buffer<ALLOCATOR> extract(map_handle map, const slice &key,
|
|
const ALLOCATOR &allocator = ALLOCATOR());
|
|
|
|
/// Replaces and returns a value of the key with new one
|
|
template <class ALLOCATOR>
|
|
inline buffer<ALLOCATOR> replace(map_handle map, const slice &key,
|
|
const slice &new_value,
|
|
const ALLOCATOR &allocator = ALLOCATOR());
|
|
|
|
template <class ALLOCATOR>
|
|
inline buffer<ALLOCATOR>
|
|
replace_reserve(map_handle map, const slice &key, slice &new_value,
|
|
const ALLOCATOR &allocator = ALLOCATOR());
|
|
|
|
/// Adding a key-value pair, provided that ascending order of the keys and
|
|
/// (optionally) values are preserved.
|
|
///
|
|
/// Instead of splitting the full b+tree pages, the data will be placed on new
|
|
/// ones. Thus appending is about two times faster than insertion, and the
|
|
/// pages will be filled in completely mostly but not half as after splitting
|
|
/// ones. On the other hand, any subsequent insertion or update with an
|
|
/// increase in the length of the value will be twice as slow, since it will
|
|
/// require splitting already filled pages.
|
|
///
|
|
/// \param [in] multivalue_order_preserved
|
|
/// If `multivalue_order_preserved == true` then the same rules applied for
|
|
/// to pages of nested b+tree of multimap's values.
|
|
inline void append(map_handle map, const slice &key, const slice &value,
|
|
bool multivalue_order_preserved = true);
|
|
|
|
size_t put_multiple(map_handle map, const slice &key,
|
|
const size_t value_length, const void *values_array,
|
|
size_t values_count, put_mode mode,
|
|
bool allow_partial = false);
|
|
template <typename VALUE>
|
|
void put_multiple(map_handle map, const slice &key,
|
|
const std::vector<VALUE> &vector, put_mode mode) {
|
|
put_multiple(map, key, sizeof(VALUE), vector.data(), vector.size(), mode,
|
|
false);
|
|
}
|
|
|
|
inline ptrdiff_t estimate(map_handle map, pair from, pair to) const;
|
|
inline ptrdiff_t estimate(map_handle map, slice from, slice to) const;
|
|
inline ptrdiff_t estimate_from_first(map_handle map, slice to) const;
|
|
inline ptrdiff_t estimate_to_last(map_handle map, slice from) const;
|
|
};
|
|
|
|
class LIBMDBX_API_TYPE txn : public txn_ref {
|
|
using inherited = txn_ref;
|
|
friend class env_ref;
|
|
friend class txn_ref;
|
|
/// delegated constructor for RAII
|
|
constexpr txn(MDBX_txn *ptr) noexcept : inherited(ptr) {}
|
|
|
|
public:
|
|
constexpr txn() noexcept = default;
|
|
txn(txn &&) = default;
|
|
txn &operator=(txn &&) = default;
|
|
txn(const txn &) = delete;
|
|
txn &operator=(const txn &) = delete;
|
|
virtual ~txn() noexcept;
|
|
|
|
//----------------------------------------------------------------------------
|
|
|
|
/// Abort write transaction or read-only transaction.
|
|
void abort();
|
|
|
|
/// Commit write transaction.
|
|
void commit();
|
|
};
|
|
|
|
class LIBMDBX_API_TYPE cursor_ref {
|
|
protected:
|
|
MDBX_cursor *handle_{nullptr};
|
|
constexpr cursor_ref(MDBX_cursor *ptr) noexcept;
|
|
|
|
public:
|
|
constexpr cursor_ref() noexcept = default;
|
|
cursor_ref(const cursor_ref &) noexcept = default;
|
|
inline cursor_ref &operator=(cursor_ref &&other) noexcept;
|
|
inline cursor_ref(cursor_ref &&other) noexcept;
|
|
inline ~cursor_ref() noexcept;
|
|
constexpr operator bool() const noexcept;
|
|
constexpr operator const MDBX_cursor *() const;
|
|
inline operator MDBX_cursor *();
|
|
friend constexpr bool operator==(const cursor_ref &a,
|
|
const cursor_ref &b) noexcept;
|
|
friend constexpr bool operator!=(const cursor_ref &a,
|
|
const cursor_ref &b) noexcept;
|
|
|
|
enum move_operation {
|
|
first = MDBX_FIRST,
|
|
last = MDBX_LAST,
|
|
next = MDBX_NEXT,
|
|
previous = MDBX_PREV,
|
|
get_current = MDBX_GET_CURRENT,
|
|
|
|
multi_prevkey_lastvalue = MDBX_PREV_NODUP,
|
|
multi_currentkey_firstvalue = MDBX_FIRST_DUP,
|
|
multi_currentkey_prevvalue = MDBX_PREV_DUP,
|
|
multi_currentkey_nextvalue = MDBX_NEXT_DUP,
|
|
multi_currentkey_lastvalue = MDBX_LAST_DUP,
|
|
multi_nextkey_firstvalue = MDBX_NEXT_NODUP,
|
|
|
|
multi_find_pair = MDBX_GET_BOTH,
|
|
multi_exactkey_lowerboundvalue = MDBX_GET_BOTH_RANGE,
|
|
|
|
find_key = MDBX_SET,
|
|
key_exact = MDBX_SET_KEY,
|
|
key_lowerbound = MDBX_SET_RANGE
|
|
};
|
|
|
|
struct move_result : public pair_result {
|
|
inline move_result(const cursor_ref &cursor, bool throw_notfound);
|
|
inline move_result(cursor_ref &cursor, move_operation operation,
|
|
bool throw_notfound);
|
|
inline move_result(cursor_ref &cursor, move_operation operation,
|
|
const slice &key, bool throw_notfound);
|
|
inline move_result(cursor_ref &cursor, move_operation operation,
|
|
const slice &key, const slice &value,
|
|
bool throw_notfound);
|
|
move_result(const move_result &) noexcept = default;
|
|
};
|
|
|
|
protected:
|
|
inline bool move(move_operation operation, MDBX_val *key, MDBX_val *value,
|
|
bool throw_notfound) const
|
|
/* fake const, i.e. for some operations */;
|
|
inline ptrdiff_t estimate(move_operation operation, MDBX_val *key,
|
|
MDBX_val *value) const;
|
|
|
|
public:
|
|
inline move_result move(move_operation operation, bool throw_notfound);
|
|
inline move_result to_first(bool throw_notfound = true);
|
|
inline move_result to_previous(bool throw_notfound = true);
|
|
inline move_result to_previous_last_multi(bool throw_notfound = true);
|
|
inline move_result to_current_first_multi(bool throw_notfound = true);
|
|
inline move_result to_current_prev_multi(bool throw_notfound = true);
|
|
inline move_result current(bool throw_notfound = true) const;
|
|
inline move_result to_current_next_multi(bool throw_notfound = true);
|
|
inline move_result to_current_last_multi(bool throw_notfound = true);
|
|
inline move_result to_next_first_multi(bool throw_notfound = true);
|
|
inline move_result to_next(bool throw_notfound = true);
|
|
inline move_result to_last(bool throw_notfound = true);
|
|
|
|
inline move_result move(move_operation operation, const slice &key,
|
|
bool throw_notfound);
|
|
inline move_result find(const slice &key, bool throw_notfound = true);
|
|
inline move_result lower_bound(const slice &key, bool throw_notfound = true);
|
|
|
|
inline move_result move(move_operation operation, const slice &key,
|
|
const slice &value, bool throw_notfound);
|
|
inline move_result find_multivalue(const slice &key, const slice &value,
|
|
bool throw_notfound = true);
|
|
inline move_result lower_bound_multivalue(const slice &key,
|
|
const slice &value,
|
|
bool throw_notfound = false);
|
|
|
|
inline bool seek(const slice &key);
|
|
inline bool move(move_operation operation, slice &key, slice &value,
|
|
bool throw_notfound);
|
|
/// Return count of duplicates for current key.
|
|
inline size_t count_multivalue() const;
|
|
|
|
inline bool eof() const;
|
|
inline bool on_first() const;
|
|
inline bool on_last() const;
|
|
inline ptrdiff_t estimate(slice key, slice value) const;
|
|
inline ptrdiff_t estimate(slice key) const;
|
|
inline ptrdiff_t estimate(move_operation operation) const;
|
|
|
|
//----------------------------------------------------------------------------
|
|
|
|
inline void renew(::mdbx::txn_ref &txn);
|
|
inline ::mdbx::txn_ref txn() const;
|
|
inline map_handle map() const;
|
|
|
|
inline operator ::mdbx::txn_ref() const { return txn(); }
|
|
inline operator ::mdbx::map_handle() const { return map(); }
|
|
|
|
inline MDBX_error_t put(const slice &key, slice *value,
|
|
MDBX_put_flags_t flags) noexcept;
|
|
inline void insert(const slice &key, slice value);
|
|
inline value_result try_insert(const slice &key, slice value);
|
|
inline slice insert_reserve(const slice &key, size_t value_length);
|
|
inline value_result try_insert_reserve(const slice &key, size_t value_length);
|
|
|
|
inline void upsert(const slice &key, const slice &value);
|
|
inline slice upsert_reserve(const slice &key, size_t value_length);
|
|
|
|
inline void update(const slice &key, const slice &value);
|
|
inline bool try_update(const slice &key, const slice &value);
|
|
inline slice update_reserve(const slice &key, size_t value_length);
|
|
inline value_result try_update_reserve(const slice &key, size_t value_length);
|
|
|
|
inline bool erase(bool whole_multivalue = false);
|
|
};
|
|
|
|
class LIBMDBX_API_TYPE cursor : public cursor_ref {
|
|
using inherited = cursor_ref;
|
|
friend class txn_ref;
|
|
/// delegated constructor for RAII
|
|
constexpr cursor(MDBX_cursor *ptr) noexcept : inherited(ptr) {}
|
|
|
|
public:
|
|
constexpr cursor() noexcept = default;
|
|
void close();
|
|
|
|
cursor(cursor &&) = default;
|
|
cursor &operator=(cursor &&) = default;
|
|
cursor(const cursor &) = delete;
|
|
cursor &operator=(const cursor &) = delete;
|
|
virtual ~cursor() noexcept;
|
|
};
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
LIBMDBX_API ::std::ostream &operator<<(::std::ostream &, const ::mdbx::slice &);
|
|
LIBMDBX_API ::std::ostream &operator<<(::std::ostream &, const ::mdbx::pair &);
|
|
template <class ALLOCATOR>
|
|
inline ::std::ostream &operator<<(::std::ostream &out,
|
|
const ::mdbx::buffer<ALLOCATOR> &it) {
|
|
return (it.is_freestanding()
|
|
? out << "buf-" << it.headroom() << "." << it.tailroom()
|
|
: out << "ref-")
|
|
<< it.ref();
|
|
}
|
|
LIBMDBX_API ::std::ostream &operator<<(::std::ostream &,
|
|
const ::mdbx::env_ref::geometry::size &);
|
|
LIBMDBX_API ::std::ostream &operator<<(::std::ostream &,
|
|
const ::mdbx::env_ref::geometry &);
|
|
LIBMDBX_API ::std::ostream &
|
|
operator<<(::std::ostream &, const ::mdbx::env_ref::operate_parameters &);
|
|
LIBMDBX_API ::std::ostream &operator<<(::std::ostream &,
|
|
const ::mdbx::env_ref::mode &);
|
|
LIBMDBX_API ::std::ostream &operator<<(::std::ostream &,
|
|
const ::mdbx::env_ref::durability &);
|
|
LIBMDBX_API ::std::ostream &
|
|
operator<<(::std::ostream &, const ::mdbx::env_ref::reclaiming_options &);
|
|
LIBMDBX_API ::std::ostream &
|
|
operator<<(::std::ostream &, const ::mdbx::env_ref::operate_options &);
|
|
LIBMDBX_API ::std::ostream &
|
|
operator<<(::std::ostream &, const ::mdbx::env_ref::create_parameters &);
|
|
|
|
LIBMDBX_API ::std::ostream &operator<<(::std::ostream &,
|
|
const MDBX_log_level_t &);
|
|
LIBMDBX_API ::std::ostream &operator<<(::std::ostream &,
|
|
const MDBX_debug_flags_t &);
|
|
LIBMDBX_API ::std::ostream &operator<<(::std::ostream &, const ::mdbx::error &);
|
|
inline ::std::ostream &operator<<(::std::ostream &out,
|
|
const MDBX_error_t &errcode) {
|
|
return out << ::mdbx::error(errcode);
|
|
}
|
|
|
|
} // namespace mdbx
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
namespace std {
|
|
|
|
#if defined(__cpp_lib_string_view) && __cpp_lib_string_view >= 201606L
|
|
template <> struct is_convertible<::mdbx::slice, string_view> : true_type {};
|
|
#if __cplusplus >= 202002L
|
|
template <>
|
|
struct is_nothrow_convertible<::mdbx::slice, string_view> : true_type {};
|
|
#endif /* C++20 */
|
|
#endif /* std::string_view */
|
|
|
|
LIBMDBX_API string to_string(const ::mdbx::slice &);
|
|
LIBMDBX_API string to_string(const ::mdbx::pair &);
|
|
|
|
template <class ALLOCATOR>
|
|
inline string to_string(const ::mdbx::buffer<ALLOCATOR> &buffer) {
|
|
ostringstream out;
|
|
out << buffer;
|
|
return out.str();
|
|
}
|
|
|
|
LIBMDBX_API string to_string(const ::mdbx::env_ref::geometry &);
|
|
LIBMDBX_API string to_string(const ::mdbx::env_ref::operate_parameters &);
|
|
LIBMDBX_API string to_string(const ::mdbx::env_ref::mode &);
|
|
LIBMDBX_API string to_string(const ::mdbx::env_ref::durability &);
|
|
LIBMDBX_API string to_string(const ::mdbx::env_ref::reclaiming_options &);
|
|
LIBMDBX_API string to_string(const ::mdbx::env_ref::operate_options &);
|
|
LIBMDBX_API string to_string(const ::mdbx::env_ref::create_parameters &);
|
|
|
|
LIBMDBX_API string to_string(const ::MDBX_log_level_t &);
|
|
LIBMDBX_API string to_string(const ::MDBX_debug_flags_t &);
|
|
LIBMDBX_API string to_string(const ::mdbx::error &);
|
|
inline string to_string(const ::MDBX_error_t &errcode) {
|
|
return to_string(::mdbx::error(errcode));
|
|
}
|
|
|
|
} // namespace std
|
|
|
|
//==============================================================================
|
|
//
|
|
// Inline body of the libmdbx C++ API (preliminary draft)
|
|
//
|
|
|
|
namespace mdbx {
|
|
|
|
constexpr const version_info &get_version() noexcept { return ::mdbx_version; }
|
|
constexpr const build_info &get_build() noexcept { return ::mdbx_build; }
|
|
|
|
static cxx17_constexpr size_t strlen(const char *c_str) noexcept {
|
|
#if defined(__cpp_lib_is_constant_evaluated) && \
|
|
__cpp_lib_is_constant_evaluated >= 201811L
|
|
if (::std::is_constant_evaluated()) {
|
|
for (size_t i = 0; c_str; ++i)
|
|
if (!c_str[i])
|
|
return i;
|
|
return 0;
|
|
}
|
|
#endif /* __cpp_lib_is_constant_evaluated >= 201811 */
|
|
#if defined(__cpp_lib_string_view) && __cpp_lib_string_view >= 201606L
|
|
return c_str ? ::std::string_view(c_str).length() : 0;
|
|
#else
|
|
return c_str ? ::std::strlen(c_str) : 0;
|
|
#endif
|
|
}
|
|
|
|
cxx14_constexpr size_t check_length(size_t bytes) {
|
|
if (mdbx_unlikely(bytes > size_t(MDBX_MAXDATASIZE)))
|
|
cxx20_attribute_unlikely throw_max_length_exceeded();
|
|
return bytes;
|
|
}
|
|
|
|
inline bool exception_thunk::is_clean() const noexcept { return !captured_; }
|
|
|
|
inline void exception_thunk::capture() noexcept {
|
|
assert(is_clean());
|
|
captured_ = ::std::current_exception();
|
|
}
|
|
|
|
inline void exception_thunk::rethrow_captured() const {
|
|
if (captured_)
|
|
cxx20_attribute_unlikely ::std::rethrow_exception(captured_);
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
constexpr error::error(MDBX_error_t error_code) noexcept : code_(error_code) {}
|
|
|
|
inline error &error::operator=(MDBX_error_t error_code) noexcept {
|
|
code_ = error_code;
|
|
return *this;
|
|
}
|
|
|
|
constexpr bool operator==(const error &a, const error &b) noexcept {
|
|
return a.code_ == b.code_;
|
|
}
|
|
|
|
constexpr bool operator!=(const error &a, const error &b) noexcept {
|
|
return !(a == b);
|
|
}
|
|
|
|
constexpr bool error::is_success() const noexcept {
|
|
return code_ == MDBX_SUCCESS;
|
|
}
|
|
|
|
constexpr bool error::is_result_true() const noexcept {
|
|
return code_ == MDBX_RESULT_FALSE;
|
|
}
|
|
|
|
constexpr bool error::is_result_false() const noexcept {
|
|
return code_ == MDBX_RESULT_TRUE;
|
|
}
|
|
|
|
constexpr bool error::is_failure() const noexcept {
|
|
return code_ != MDBX_SUCCESS && code_ != MDBX_RESULT_TRUE;
|
|
}
|
|
|
|
constexpr MDBX_error_t error::code() const noexcept { return code_; }
|
|
|
|
constexpr bool error::is_mdbx_error() const noexcept {
|
|
return (code() >= MDBX_FIRST_LMDB_ERRCODE &&
|
|
code() <= MDBX_LAST_LMDB_ERRCODE) ||
|
|
(code() >= MDBX_FIRST_ADDED_ERRCODE &&
|
|
code() <= MDBX_LAST_ADDED_ERRCODEE);
|
|
}
|
|
|
|
inline void error::throw_exception(int error_code) {
|
|
const error trouble(static_cast<MDBX_error_t>(error_code));
|
|
trouble.throw_exception();
|
|
}
|
|
|
|
inline void error::throw_on_failure() const {
|
|
if (mdbx_unlikely(is_failure()))
|
|
cxx20_attribute_unlikely throw_exception();
|
|
}
|
|
|
|
inline void error::success_or_throw() const {
|
|
if (mdbx_unlikely(!is_success()))
|
|
cxx20_attribute_unlikely throw_exception();
|
|
}
|
|
|
|
inline void error::success_or_throw(const exception_thunk &thunk) const {
|
|
assert(thunk.is_clean() || code() != MDBX_SUCCESS);
|
|
if (mdbx_unlikely(!is_success())) {
|
|
cxx20_attribute_unlikely if (!thunk.is_clean()) thunk.rethrow_captured();
|
|
else throw_exception();
|
|
}
|
|
}
|
|
|
|
inline void error::panic_on_failure(const char *context_where,
|
|
const char *func_who) const noexcept {
|
|
if (mdbx_unlikely(is_failure()))
|
|
cxx20_attribute_unlikely panic(context_where, func_who);
|
|
}
|
|
|
|
inline void error::success_or_panic(const char *context_where,
|
|
const char *func_who) const noexcept {
|
|
if (mdbx_unlikely(!is_success()))
|
|
cxx20_attribute_unlikely panic(context_where, func_who);
|
|
}
|
|
|
|
inline void error::throw_on_nullptr(const void *ptr, MDBX_error_t error_code) {
|
|
if (mdbx_unlikely(ptr == nullptr))
|
|
cxx20_attribute_unlikely error(error_code).throw_exception();
|
|
}
|
|
|
|
inline void error::throw_on_failure(int error_code) {
|
|
error rc(static_cast<MDBX_error_t>(error_code));
|
|
rc.throw_on_failure();
|
|
}
|
|
|
|
inline void error::success_or_throw(MDBX_error_t error_code) {
|
|
error rc(error_code);
|
|
rc.success_or_throw();
|
|
}
|
|
|
|
inline bool error::boolean_or_throw(int error_code) {
|
|
switch (error_code) {
|
|
case MDBX_RESULT_FALSE:
|
|
return false;
|
|
case MDBX_RESULT_TRUE:
|
|
return true;
|
|
default:
|
|
cxx20_attribute_unlikely throw_exception(error_code);
|
|
}
|
|
}
|
|
|
|
inline void error::success_or_throw(int error_code,
|
|
const exception_thunk &thunk) {
|
|
error rc(static_cast<MDBX_error_t>(error_code));
|
|
rc.success_or_throw(thunk);
|
|
}
|
|
|
|
inline void error::panic_on_failure(int error_code, const char *context_where,
|
|
const char *func_who) noexcept {
|
|
error rc(static_cast<MDBX_error_t>(error_code));
|
|
rc.panic_on_failure(context_where, func_who);
|
|
}
|
|
|
|
inline void error::success_or_panic(int error_code, const char *context_where,
|
|
const char *func_who) noexcept {
|
|
error rc(static_cast<MDBX_error_t>(error_code));
|
|
rc.success_or_panic(context_where, func_who);
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
constexpr slice::slice() noexcept : ::MDBX_val({nullptr, 0}) {}
|
|
|
|
cxx14_constexpr slice::slice(const void *ptr, size_t bytes)
|
|
: ::MDBX_val({const_cast<void *>(ptr), check_length(bytes)}) {}
|
|
|
|
cxx14_constexpr slice::slice(const void *begin, const void *end)
|
|
: slice(begin, static_cast<const byte *>(end) -
|
|
static_cast<const byte *>(begin)) {}
|
|
|
|
cxx17_constexpr slice::slice(const char *c_str)
|
|
: slice(c_str, ::mdbx::strlen(c_str)) {}
|
|
|
|
cxx14_constexpr slice::slice(const MDBX_val &src)
|
|
: slice(src.iov_base, src.iov_len) {}
|
|
|
|
inline slice::slice(MDBX_val &&src) : slice(src) { src.iov_base = nullptr; }
|
|
|
|
inline slice::slice(slice &&src) noexcept : slice(src) { src.deplete(); }
|
|
|
|
inline slice &slice::assign(const void *ptr, size_t bytes) {
|
|
iov_base = const_cast<void *>(ptr);
|
|
iov_len = check_length(bytes);
|
|
return *this;
|
|
}
|
|
|
|
inline slice &slice::assign(const slice &src) noexcept {
|
|
iov_base = src.iov_base;
|
|
iov_len = src.iov_len;
|
|
return *this;
|
|
}
|
|
|
|
inline slice &slice::assign(const ::MDBX_val &src) {
|
|
return assign(src.iov_base, src.iov_len);
|
|
}
|
|
|
|
slice &slice::assign(slice &&src) noexcept {
|
|
assign(src);
|
|
src.deplete();
|
|
return *this;
|
|
}
|
|
|
|
inline slice &slice::assign(::MDBX_val &&src) {
|
|
assign(src.iov_base, src.iov_len);
|
|
src.iov_base = nullptr;
|
|
return *this;
|
|
}
|
|
|
|
inline slice &slice::assign(const void *begin, const void *end) {
|
|
return assign(begin, static_cast<const byte *>(end) -
|
|
static_cast<const byte *>(begin));
|
|
}
|
|
|
|
inline slice &slice::assign(const char *c_str) {
|
|
return assign(c_str, ::mdbx::strlen(c_str));
|
|
}
|
|
|
|
inline slice &slice::operator=(slice &&src) noexcept {
|
|
return assign(::std::move(src));
|
|
}
|
|
|
|
inline slice &slice::operator=(::MDBX_val &&src) {
|
|
return assign(::std::move(src));
|
|
}
|
|
|
|
inline void slice::swap(slice &other) noexcept {
|
|
const auto temp = *this;
|
|
*this = other;
|
|
other = temp;
|
|
}
|
|
|
|
cxx17_constexpr slice slice::c_str(const char *str) { return slice(str); }
|
|
|
|
constexpr const mdbx::byte *slice::byte_ptr() const noexcept {
|
|
return static_cast<const byte *>(iov_base);
|
|
}
|
|
|
|
constexpr const char *slice::char_ptr() const noexcept {
|
|
return static_cast<const char *>(iov_base);
|
|
}
|
|
|
|
constexpr const void *slice::data() const noexcept { return iov_base; }
|
|
|
|
constexpr size_t slice::length() const noexcept { return iov_len; }
|
|
|
|
constexpr bool slice::empty() const noexcept { return length() == 0; }
|
|
|
|
constexpr bool slice::is_null() const noexcept { return data() == nullptr; }
|
|
|
|
constexpr size_t slice::size() const noexcept { return length(); }
|
|
|
|
constexpr slice::operator bool() const noexcept { return !is_null(); }
|
|
|
|
inline void slice::deplete() noexcept { iov_base = nullptr; }
|
|
|
|
inline void slice::reset() noexcept {
|
|
iov_base = nullptr;
|
|
iov_len = 0;
|
|
}
|
|
|
|
inline void slice::remove_prefix(size_t n) noexcept {
|
|
assert(n <= size());
|
|
iov_base = static_cast<byte *>(iov_base) + n;
|
|
iov_len -= n;
|
|
}
|
|
|
|
inline void slice::safe_remove_prefix(size_t n) {
|
|
if (mdbx_unlikely(n > size()))
|
|
cxx20_attribute_unlikely throw_out_range();
|
|
remove_prefix(n);
|
|
}
|
|
|
|
inline void slice::remove_suffix(size_t n) noexcept {
|
|
assert(n <= size());
|
|
iov_len -= n;
|
|
}
|
|
|
|
inline void slice::safe_remove_suffix(size_t n) {
|
|
if (mdbx_unlikely(n > size()))
|
|
cxx20_attribute_unlikely throw_out_range();
|
|
remove_suffix(n);
|
|
}
|
|
|
|
inline bool slice::starts_with(const slice &prefix) const noexcept {
|
|
return length() >= prefix.length() &&
|
|
::std::memcmp(data(), prefix.data(), prefix.length()) == 0;
|
|
}
|
|
|
|
inline bool slice::ends_with(const slice &suffix) const noexcept {
|
|
return length() >= suffix.length() &&
|
|
::std::memcmp(byte_ptr() + length() - suffix.length(), suffix.data(),
|
|
suffix.length()) == 0;
|
|
}
|
|
|
|
__nothrow_pure_function cxx14_constexpr size_t
|
|
slice::hash_value() const noexcept {
|
|
size_t h = length() * 3977471;
|
|
for (size_t i = 0; i < length(); ++i)
|
|
h = (h ^ static_cast<const uint8_t *>(data())[i]) * 1664525 + 1013904223;
|
|
return h ^ 3863194411 * (h >> 11);
|
|
}
|
|
|
|
inline slice slice::head(size_t n) const noexcept {
|
|
assert(n <= size());
|
|
return slice(data(), n);
|
|
}
|
|
|
|
inline slice slice::tail(size_t n) const noexcept {
|
|
assert(n <= size());
|
|
return slice(char_ptr() + size() - n, n);
|
|
}
|
|
|
|
inline slice slice::middle(size_t from, size_t n) const noexcept {
|
|
assert(from + n <= size());
|
|
return slice(char_ptr() + from, n);
|
|
}
|
|
|
|
inline slice slice::safe_head(size_t n) const {
|
|
if (mdbx_unlikely(n > size()))
|
|
cxx20_attribute_unlikely throw_out_range();
|
|
return head(n);
|
|
}
|
|
|
|
inline slice slice::safe_tail(size_t n) const {
|
|
if (mdbx_unlikely(n > size()))
|
|
cxx20_attribute_unlikely throw_out_range();
|
|
return tail(n);
|
|
}
|
|
|
|
inline slice slice::safe_middle(size_t from, size_t n) const {
|
|
if (mdbx_unlikely(n > max_length))
|
|
cxx20_attribute_unlikely throw_max_length_exceeded();
|
|
if (mdbx_unlikely(from + n > size()))
|
|
cxx20_attribute_unlikely throw_out_range();
|
|
return middle(from, n);
|
|
}
|
|
|
|
inline intptr_t slice::compare_fast(const slice &a, const slice &b) noexcept {
|
|
const intptr_t diff = a.length() - b.length();
|
|
return diff ? diff
|
|
: (a.data() == b.data())
|
|
? 0
|
|
: ::std::memcmp(a.data(), b.data(), a.length());
|
|
}
|
|
|
|
inline intptr_t slice::compare_lexicographically(const slice &a,
|
|
const slice &b) noexcept {
|
|
const intptr_t diff =
|
|
::std::memcmp(a.data(), b.data(), ::std::min(a.length(), b.length()));
|
|
return diff ? diff : intptr_t(a.length() - b.length());
|
|
}
|
|
|
|
__nothrow_pure_function inline bool operator==(const slice &a,
|
|
const slice &b) noexcept {
|
|
return slice::compare_fast(a, b) == 0;
|
|
}
|
|
|
|
__nothrow_pure_function inline bool operator<(const slice &a,
|
|
const slice &b) noexcept {
|
|
return slice::compare_lexicographically(a, b) < 0;
|
|
}
|
|
|
|
__nothrow_pure_function inline bool operator>(const slice &a,
|
|
const slice &b) noexcept {
|
|
return slice::compare_lexicographically(a, b) > 0;
|
|
}
|
|
|
|
__nothrow_pure_function inline bool operator<=(const slice &a,
|
|
const slice &b) noexcept {
|
|
return slice::compare_lexicographically(a, b) <= 0;
|
|
}
|
|
|
|
__nothrow_pure_function inline bool operator>=(const slice &a,
|
|
const slice &b) noexcept {
|
|
return slice::compare_lexicographically(a, b) >= 0;
|
|
}
|
|
|
|
__nothrow_pure_function inline bool operator!=(const slice &a,
|
|
const slice &b) noexcept {
|
|
return slice::compare_fast(a, b) != 0;
|
|
}
|
|
|
|
template <class ALLOCATOR>
|
|
inline ::mdbx::string<ALLOCATOR>
|
|
slice::hex_encode(bool uppercase, const ALLOCATOR &allocator) const {
|
|
::mdbx::string<ALLOCATOR> result(allocator);
|
|
if (mdbx_likely(length() > 0)) {
|
|
result.reserve(to_hex_bytes());
|
|
result.resize(to_hex(const_cast<char *>(result.data()), result.capacity()) -
|
|
result.data(),
|
|
uppercase);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
template <class ALLOCATOR>
|
|
inline ::mdbx::string<ALLOCATOR>
|
|
slice::hex_decode(const ALLOCATOR &allocator) const {
|
|
::mdbx::string<ALLOCATOR> result(allocator);
|
|
if (mdbx_likely(length() > 0)) {
|
|
result.reserve(from_hex_bytes());
|
|
result.resize(
|
|
from_hex(static_cast<byte *>(
|
|
static_cast<void *>(const_cast<char *>(result.data()))),
|
|
result.capacity()) -
|
|
static_cast<const byte *>(static_cast<const void *>(result.data())));
|
|
}
|
|
return result;
|
|
}
|
|
|
|
template <class ALLOCATOR>
|
|
inline ::mdbx::string<ALLOCATOR>
|
|
slice::base58_encode(const ALLOCATOR &allocator) const {
|
|
::mdbx::string<ALLOCATOR> result(allocator);
|
|
if (mdbx_likely(length() > 0)) {
|
|
result.reserve(to_base58_bytes());
|
|
result.resize(
|
|
to_base58(const_cast<char *>(result.data()), result.capacity()) -
|
|
result.data());
|
|
}
|
|
return result;
|
|
}
|
|
|
|
template <class ALLOCATOR>
|
|
inline ::mdbx::string<ALLOCATOR>
|
|
slice::base58_decode(const ALLOCATOR &allocator) const {
|
|
::mdbx::string<ALLOCATOR> result(allocator);
|
|
if (mdbx_likely(length() > 0)) {
|
|
result.reserve(from_base58_bytes());
|
|
result.resize(
|
|
from_base58(static_cast<byte *>(
|
|
static_cast<void *>(const_cast<char *>(result.data()))),
|
|
result.capacity()) -
|
|
static_cast<const byte *>(static_cast<const void *>(result.data())));
|
|
}
|
|
return result;
|
|
}
|
|
|
|
template <class ALLOCATOR>
|
|
inline ::mdbx::string<ALLOCATOR>
|
|
slice::base64_encode(const ALLOCATOR &allocator) const {
|
|
::mdbx::string<ALLOCATOR> result(allocator);
|
|
if (mdbx_likely(length() > 0)) {
|
|
result.reserve(to_base64_bytes());
|
|
result.resize(
|
|
to_base64(const_cast<char *>(result.data()), result.capacity()) -
|
|
result.data());
|
|
}
|
|
return result;
|
|
}
|
|
|
|
template <class ALLOCATOR>
|
|
inline ::mdbx::string<ALLOCATOR>
|
|
slice::base64_decode(const ALLOCATOR &allocator) const {
|
|
::mdbx::string<ALLOCATOR> result(allocator);
|
|
if (mdbx_likely(length() > 0)) {
|
|
result.reserve(from_base64_bytes());
|
|
result.resize(
|
|
from_base64(static_cast<byte *>(
|
|
static_cast<void *>(const_cast<char *>(result.data()))),
|
|
result.capacity()) -
|
|
static_cast<const byte *>(static_cast<const void *>(result.data())));
|
|
}
|
|
return result;
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
constexpr map_handle::info::info(map_handle::flags flags,
|
|
map_handle::state state) noexcept
|
|
: flags(flags), state(state) {}
|
|
|
|
constexpr ::mdbx::key_mode map_handle::info::key_mode() const noexcept {
|
|
return ::mdbx::key_mode(flags & (MDBX_REVERSEKEY | MDBX_INTEGERKEY));
|
|
}
|
|
|
|
constexpr ::mdbx::value_mode map_handle::info::value_mode() const noexcept {
|
|
return ::mdbx::value_mode(flags & (MDBX_DUPSORT | MDBX_REVERSEDUP |
|
|
MDBX_DUPFIXED | MDBX_INTEGERDUP));
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
constexpr env_ref::env_ref(MDBX_env *ptr) noexcept : handle_(ptr) {}
|
|
|
|
inline env_ref &env_ref::operator=(env_ref &&other) noexcept {
|
|
handle_ = other.handle_;
|
|
other.handle_ = nullptr;
|
|
return *this;
|
|
}
|
|
|
|
inline env_ref::env_ref(env_ref &&other) noexcept : handle_(other.handle_) {
|
|
other.handle_ = nullptr;
|
|
}
|
|
|
|
inline env_ref::~env_ref() noexcept {
|
|
#ifndef NDEBUG
|
|
handle_ = reinterpret_cast<MDBX_env *>(uintptr_t(0xDeadBeef));
|
|
#endif
|
|
}
|
|
|
|
constexpr env_ref::operator bool() const noexcept { return handle_ != nullptr; }
|
|
|
|
constexpr env_ref::operator const MDBX_env *() const { return handle_; }
|
|
|
|
inline env_ref::operator MDBX_env *() { return handle_; }
|
|
|
|
constexpr bool operator==(const env_ref &a, const env_ref &b) noexcept {
|
|
return a.handle_ == b.handle_;
|
|
}
|
|
|
|
constexpr bool operator!=(const env_ref &a, const env_ref &b) noexcept {
|
|
return a.handle_ != b.handle_;
|
|
}
|
|
|
|
inline env_ref::geometry &
|
|
env_ref::geometry::make_fixed(intptr_t size) noexcept {
|
|
size_lower = size_now = size_upper = size;
|
|
growth_step = shrink_threshold = 0;
|
|
return *this;
|
|
}
|
|
|
|
inline env_ref::geometry &
|
|
env_ref::geometry::make_dynamic(intptr_t lower, intptr_t upper) noexcept {
|
|
size_now = size_lower = lower;
|
|
size_upper = upper;
|
|
growth_step = shrink_threshold = default_value;
|
|
return *this;
|
|
}
|
|
|
|
inline env_ref::reclaiming_options
|
|
env_ref::operate_parameters::reclaiming_from_flags(
|
|
MDBX_env_flags_t flags) noexcept {
|
|
return reclaiming_options(flags);
|
|
}
|
|
|
|
inline env_ref::operate_options env_ref::operate_parameters::options_from_flags(
|
|
MDBX_env_flags_t flags) noexcept {
|
|
return operate_options(flags);
|
|
}
|
|
|
|
inline size_t env_ref::limits::pagesize_min() noexcept {
|
|
return MDBX_MIN_PAGESIZE;
|
|
}
|
|
|
|
inline size_t env_ref::limits::pagesize_max() noexcept {
|
|
return MDBX_MAX_PAGESIZE;
|
|
}
|
|
|
|
inline size_t env_ref::limits::dbsize_min(intptr_t pagesize) {
|
|
const intptr_t result = mdbx_limits_dbsize_min(pagesize);
|
|
if (result < 0)
|
|
cxx20_attribute_unlikely error::throw_exception(MDBX_EINVAL);
|
|
return static_cast<size_t>(result);
|
|
}
|
|
|
|
inline size_t env_ref::limits::dbsize_max(intptr_t pagesize) {
|
|
const intptr_t result = mdbx_limits_dbsize_max(pagesize);
|
|
if (result < 0)
|
|
cxx20_attribute_unlikely error::throw_exception(MDBX_EINVAL);
|
|
return static_cast<size_t>(result);
|
|
}
|
|
|
|
inline size_t env_ref::limits::key_min(MDBX_db_flags_t flags) {
|
|
return (flags & MDBX_INTEGERKEY) ? 4 : 0;
|
|
}
|
|
|
|
inline size_t env_ref::limits::key_max(intptr_t pagesize,
|
|
MDBX_db_flags_t flags) {
|
|
const intptr_t result = mdbx_limits_keysize_max(pagesize, flags);
|
|
if (result < 0)
|
|
cxx20_attribute_unlikely error::throw_exception(MDBX_EINVAL);
|
|
return static_cast<size_t>(result);
|
|
}
|
|
|
|
inline size_t env_ref::limits::key_max(const env_ref &env,
|
|
MDBX_db_flags_t flags) {
|
|
const intptr_t result = mdbx_env_get_maxkeysize_ex(env, flags);
|
|
if (result < 0)
|
|
cxx20_attribute_unlikely error::throw_exception(MDBX_EINVAL);
|
|
return static_cast<size_t>(result);
|
|
}
|
|
|
|
inline size_t env_ref::limits::value_min(MDBX_db_flags_t flags) {
|
|
return (flags & MDBX_INTEGERDUP) ? 4 : 0;
|
|
}
|
|
|
|
inline size_t env_ref::limits::value_max(intptr_t pagesize,
|
|
MDBX_db_flags_t flags) {
|
|
const intptr_t result = mdbx_limits_valsize_max(pagesize, flags);
|
|
if (result < 0)
|
|
cxx20_attribute_unlikely error::throw_exception(MDBX_EINVAL);
|
|
return static_cast<size_t>(result);
|
|
}
|
|
|
|
inline size_t env_ref::limits::value_max(const env_ref &env,
|
|
MDBX_db_flags_t flags) {
|
|
const intptr_t result = mdbx_env_get_maxvalsize_ex(env, flags);
|
|
if (result < 0)
|
|
cxx20_attribute_unlikely error::throw_exception(MDBX_EINVAL);
|
|
return static_cast<size_t>(result);
|
|
}
|
|
|
|
inline size_t env_ref::limits::transaction_size_max(intptr_t pagesize) {
|
|
const intptr_t result = mdbx_limits_txnsize_max(pagesize);
|
|
if (result < 0)
|
|
cxx20_attribute_unlikely error::throw_exception(MDBX_EINVAL);
|
|
return static_cast<size_t>(result);
|
|
}
|
|
|
|
inline env_ref::operate_parameters env_ref::get_operation_parameters() const {
|
|
return env_ref::operate_parameters(*this);
|
|
}
|
|
|
|
inline env_ref::mode env_ref::get_mode() const {
|
|
return operate_parameters::mode_from_flags(get_flags());
|
|
}
|
|
|
|
inline env_ref::durability env_ref::get_durability() const {
|
|
return env_ref::operate_parameters::durability_from_flags(get_flags());
|
|
}
|
|
|
|
inline env_ref::reclaiming_options env_ref::get_reclaiming() const {
|
|
return env_ref::operate_parameters::reclaiming_from_flags(get_flags());
|
|
}
|
|
|
|
inline env_ref::operate_options env_ref::get_options() const {
|
|
return env_ref::operate_parameters::options_from_flags(get_flags());
|
|
}
|
|
|
|
inline env_ref::stat env_ref::get_stat() const {
|
|
env_ref::stat r;
|
|
error::success_or_throw(::mdbx_env_stat_ex(handle_, nullptr, &r, sizeof(r)));
|
|
return r;
|
|
}
|
|
|
|
inline env_ref::stat env_ref::get_stat(const txn_ref &txn) const {
|
|
env_ref::stat r;
|
|
error::success_or_throw(::mdbx_env_stat_ex(handle_, txn, &r, sizeof(r)));
|
|
return r;
|
|
}
|
|
|
|
inline env_ref::info env_ref::get_info() const {
|
|
env_ref::info r;
|
|
error::success_or_throw(::mdbx_env_info_ex(handle_, nullptr, &r, sizeof(r)));
|
|
return r;
|
|
}
|
|
|
|
inline env_ref::info env_ref::get_info(const txn_ref &txn) const {
|
|
env_ref::info r;
|
|
error::success_or_throw(::mdbx_env_info_ex(handle_, txn, &r, sizeof(r)));
|
|
return r;
|
|
}
|
|
|
|
inline filehandle env_ref::get_filehandle() const {
|
|
filehandle fd;
|
|
error::success_or_throw(::mdbx_env_get_fd(handle_, &fd));
|
|
return fd;
|
|
}
|
|
|
|
inline MDBX_env_flags_t env_ref::get_flags() const {
|
|
unsigned bits;
|
|
error::success_or_throw(::mdbx_env_get_flags(handle_, &bits));
|
|
return MDBX_env_flags_t(bits);
|
|
}
|
|
|
|
inline unsigned env_ref::max_readers() const {
|
|
unsigned r;
|
|
error::success_or_throw(::mdbx_env_get_maxreaders(handle_, &r));
|
|
return r;
|
|
}
|
|
|
|
inline unsigned env_ref::max_maps() const {
|
|
unsigned r;
|
|
error::success_or_throw(::mdbx_env_get_maxdbs(handle_, &r));
|
|
return r;
|
|
}
|
|
|
|
inline void *env_ref::get_context() const noexcept {
|
|
return mdbx_env_get_userctx(handle_);
|
|
}
|
|
|
|
inline env_ref &env_ref::set_context(void *ptr) {
|
|
error::success_or_throw(::mdbx_env_set_userctx(handle_, ptr));
|
|
return *this;
|
|
}
|
|
|
|
inline env_ref &env_ref::set_sync_threshold(size_t bytes) {
|
|
error::success_or_throw(::mdbx_env_set_syncbytes(handle_, bytes));
|
|
return *this;
|
|
}
|
|
|
|
inline env_ref &env_ref::set_sync_period(unsigned seconds_16dot16) {
|
|
error::success_or_throw(::mdbx_env_set_syncperiod(handle_, seconds_16dot16));
|
|
return *this;
|
|
}
|
|
|
|
inline env_ref &env_ref::set_sync_period(double seconds) {
|
|
return set_sync_period(unsigned(seconds * 65536));
|
|
}
|
|
|
|
inline env_ref &env_ref::alter_flags(MDBX_env_flags_t flags, bool on_off) {
|
|
error::success_or_throw(::mdbx_env_set_flags(handle_, flags, on_off));
|
|
return *this;
|
|
}
|
|
|
|
inline env_ref &env_ref::set_geometry(const geometry &geo) {
|
|
error::success_or_throw(::mdbx_env_set_geometry(
|
|
handle_, geo.size_lower, geo.size_now, geo.size_upper, geo.growth_step,
|
|
geo.shrink_threshold, geo.pagesize));
|
|
return *this;
|
|
}
|
|
|
|
inline env_ref &env_ref::set_max_maps(unsigned maps) {
|
|
error::success_or_throw(::mdbx_env_set_maxdbs(handle_, maps));
|
|
return *this;
|
|
}
|
|
|
|
inline env_ref &env_ref::sync_to_disk() {
|
|
error::success_or_throw(::mdbx_env_sync(handle_));
|
|
return *this;
|
|
}
|
|
|
|
inline env_ref &env_ref::sync_to_disk(bool force, bool nonblock) {
|
|
error::success_or_throw(::mdbx_env_sync_ex(handle_, force, nonblock));
|
|
return *this;
|
|
}
|
|
|
|
inline bool env_ref::poll_sync_to_disk() {
|
|
return error::boolean_or_throw(::mdbx_env_sync_poll(handle_));
|
|
}
|
|
|
|
inline void env_ref::close_map(const map_handle &handle) {
|
|
error::success_or_throw(::mdbx_dbi_close(handle_, handle.dbi));
|
|
}
|
|
|
|
constexpr env_ref::reader_info::reader_info(int slot, mdbx_pid_t pid,
|
|
mdbx_tid_t thread, uint64_t txnid,
|
|
uint64_t lag, size_t used,
|
|
size_t retained) noexcept
|
|
: slot(slot), pid(pid), thread(thread), transaction_id(txnid),
|
|
transaction_lag(lag), bytes_used(used), bytes_retained(retained) {}
|
|
|
|
template <typename VISITOR>
|
|
inline int env_ref::enumerate_readers(VISITOR &visitor) {
|
|
struct reader_visitor_thunk : public exception_thunk {
|
|
VISITOR &visitor_;
|
|
static int cb(void *ctx, int number, int slot, mdbx_pid_t pid,
|
|
mdbx_tid_t thread, uint64_t txnid, uint64_t lag, size_t used,
|
|
size_t retained) noexcept {
|
|
reader_visitor_thunk *thunk = static_cast<reader_visitor_thunk *>(ctx);
|
|
assert(thunk->is_clean());
|
|
try {
|
|
const reader_info info(slot, pid, thread, txnid, lag, used, retained);
|
|
return enumeration_loop_control(thunk->visitor_(info, number));
|
|
} catch (... /* capture any exception to rethrow it over C code */) {
|
|
thunk->capture();
|
|
return enumeration_loop_control::exit_loop;
|
|
}
|
|
}
|
|
constexpr reader_visitor_thunk(VISITOR &visitor) noexcept
|
|
: visitor_(visitor) {}
|
|
};
|
|
reader_visitor_thunk thunk(visitor);
|
|
const auto rc = ::mdbx_reader_list(*this, thunk.cb, &thunk);
|
|
thunk.rethow_catched();
|
|
return rc;
|
|
}
|
|
|
|
inline unsigned env_ref::check_readers() {
|
|
int dead_count;
|
|
error::throw_on_failure(::mdbx_reader_check(*this, &dead_count));
|
|
assert(dead_count >= 0);
|
|
return static_cast<unsigned>(dead_count);
|
|
}
|
|
|
|
inline env_ref &env_ref::set_OutOfSpace_callback(MDBX_oom_func *cb) {
|
|
error::success_or_throw(::mdbx_env_set_oomfunc(handle_, cb));
|
|
return *this;
|
|
}
|
|
|
|
inline MDBX_oom_func *env_ref::get_OutOfSpace_callback() const noexcept {
|
|
return ::mdbx_env_get_oomfunc(handle_);
|
|
}
|
|
|
|
inline txn env_ref::start_read() const {
|
|
::MDBX_txn *ptr;
|
|
error::success_or_throw(
|
|
::mdbx_txn_begin(handle_, nullptr, MDBX_TXN_RDONLY, &ptr));
|
|
assert(ptr != nullptr);
|
|
return txn(ptr);
|
|
}
|
|
|
|
inline txn env_ref::prepare_read() const {
|
|
::MDBX_txn *ptr;
|
|
error::success_or_throw(
|
|
::mdbx_txn_begin(handle_, nullptr, MDBX_TXN_RDONLY_PREPARE, &ptr));
|
|
assert(ptr != nullptr);
|
|
return txn(ptr);
|
|
}
|
|
|
|
inline txn env_ref::start_write(bool dont_wait) {
|
|
::MDBX_txn *ptr;
|
|
error::success_or_throw(::mdbx_txn_begin(
|
|
handle_, nullptr, dont_wait ? MDBX_TXN_TRY : MDBX_TXN_READWRITE, &ptr));
|
|
assert(ptr != nullptr);
|
|
return txn(ptr);
|
|
}
|
|
|
|
inline txn env_ref::try_start_write() { return start_write(true); }
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
constexpr txn_ref::txn_ref(MDBX_txn *ptr) noexcept : handle_(ptr) {}
|
|
|
|
inline txn_ref &txn_ref::operator=(txn_ref &&other) noexcept {
|
|
handle_ = other.handle_;
|
|
other.handle_ = nullptr;
|
|
return *this;
|
|
}
|
|
|
|
inline txn_ref::txn_ref(txn_ref &&other) noexcept : handle_(other.handle_) {
|
|
other.handle_ = nullptr;
|
|
}
|
|
|
|
inline txn_ref::~txn_ref() noexcept {
|
|
#ifndef NDEBUG
|
|
handle_ = reinterpret_cast<MDBX_txn *>(uintptr_t(0xDeadBeef));
|
|
#endif
|
|
}
|
|
|
|
constexpr txn_ref::operator bool() const noexcept { return handle_ != nullptr; }
|
|
|
|
constexpr txn_ref::operator const MDBX_txn *() const { return handle_; }
|
|
|
|
inline txn_ref::operator MDBX_txn *() { return handle_; }
|
|
|
|
constexpr bool operator==(const txn_ref &a, const txn_ref &b) noexcept {
|
|
return a.handle_ == b.handle_;
|
|
}
|
|
|
|
constexpr bool operator!=(const txn_ref &a, const txn_ref &b) noexcept {
|
|
return a.handle_ != b.handle_;
|
|
}
|
|
|
|
inline bool txn_ref::is_dirty(const void *ptr) const {
|
|
int err = ::mdbx_is_dirty(handle_, ptr);
|
|
switch (err) {
|
|
default:
|
|
cxx20_attribute_unlikely error::throw_exception(err);
|
|
case MDBX_RESULT_TRUE:
|
|
return true;
|
|
case MDBX_RESULT_FALSE:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
inline ::mdbx::env_ref txn_ref::env() const noexcept {
|
|
return ::mdbx_txn_env(handle_);
|
|
}
|
|
|
|
inline MDBX_txn_flags_t txn_ref::flags() const {
|
|
const int bits = mdbx_txn_flags(handle_);
|
|
error::throw_on_failure((bits != -1) ? MDBX_SUCCESS : MDBX_BAD_TXN);
|
|
return static_cast<MDBX_txn_flags_t>(bits);
|
|
}
|
|
|
|
inline uint64_t txn_ref::id() const {
|
|
const uint64_t txnid = mdbx_txn_id(handle_);
|
|
error::throw_on_failure(txnid ? MDBX_SUCCESS : MDBX_BAD_TXN);
|
|
return txnid;
|
|
}
|
|
|
|
inline void txn_ref::reset_reading() {
|
|
error::success_or_throw(::mdbx_txn_reset(handle_));
|
|
}
|
|
|
|
inline void txn_ref::renew_reading() {
|
|
error::success_or_throw(::mdbx_txn_renew(handle_));
|
|
}
|
|
|
|
inline txn_ref::info txn_ref::get_info(bool scan_reader_lock_table) const {
|
|
txn_ref::info r;
|
|
error::success_or_throw(::mdbx_txn_info(handle_, &r, scan_reader_lock_table));
|
|
return r;
|
|
}
|
|
|
|
inline cursor txn_ref::create_cursor(map_handle map) {
|
|
MDBX_cursor *ptr;
|
|
error::success_or_throw(::mdbx_cursor_open(handle_, map.dbi, &ptr));
|
|
return cursor(ptr);
|
|
}
|
|
|
|
inline ::mdbx::map_handle
|
|
txn_ref::open_map(const char *name, const ::mdbx::key_mode key_mode,
|
|
const ::mdbx::value_mode value_mode) const {
|
|
::mdbx::map_handle map;
|
|
error::success_or_throw(::mdbx_dbi_open(
|
|
handle_, name, MDBX_db_flags_t(key_mode) | MDBX_db_flags_t(value_mode),
|
|
&map.dbi));
|
|
assert(map.dbi != 0);
|
|
return map;
|
|
}
|
|
|
|
inline ::mdbx::map_handle
|
|
txn_ref::open_map(const ::std::string &name, const ::mdbx::key_mode key_mode,
|
|
const ::mdbx::value_mode value_mode) const {
|
|
return open_map(name.c_str(), key_mode, value_mode);
|
|
}
|
|
|
|
inline ::mdbx::map_handle
|
|
txn_ref::create_map(const char *name, const ::mdbx::key_mode key_mode,
|
|
const ::mdbx::value_mode value_mode) {
|
|
::mdbx::map_handle map;
|
|
error::success_or_throw(::mdbx_dbi_open(
|
|
handle_, name,
|
|
MDBX_CREATE | MDBX_db_flags_t(key_mode) | MDBX_db_flags_t(value_mode),
|
|
&map.dbi));
|
|
assert(map.dbi != 0);
|
|
return map;
|
|
}
|
|
|
|
inline ::mdbx::map_handle
|
|
txn_ref::create_map(const ::std::string &name, const ::mdbx::key_mode key_mode,
|
|
const ::mdbx::value_mode value_mode) {
|
|
return create_map(name.c_str(), key_mode, value_mode);
|
|
}
|
|
|
|
inline void txn_ref::drop_map(map_handle map) {
|
|
error::success_or_throw(::mdbx_drop(handle_, map.dbi, true));
|
|
}
|
|
|
|
inline bool txn_ref::drop_map(const ::std::string &name,
|
|
bool ignore_nonexists) {
|
|
return drop_map(name.c_str(), ignore_nonexists);
|
|
}
|
|
|
|
inline void txn_ref::clear_map(map_handle map) {
|
|
error::success_or_throw(::mdbx_drop(handle_, map.dbi, false));
|
|
}
|
|
|
|
inline bool txn_ref::clear_map(const ::std::string &name,
|
|
bool ignore_nonexists) {
|
|
return clear_map(name.c_str(), ignore_nonexists);
|
|
}
|
|
|
|
inline txn_ref::map_stat txn_ref::get_map_stat(map_handle map) const {
|
|
txn_ref::map_stat r;
|
|
error::success_or_throw(::mdbx_dbi_stat(handle_, map.dbi, &r, sizeof(r)));
|
|
return r;
|
|
}
|
|
|
|
inline uint32_t txn_ref::get_tree_deepmask(map_handle map) const {
|
|
uint32_t r;
|
|
error::success_or_throw(::mdbx_dbi_dupsort_depthmask(handle_, map.dbi, &r));
|
|
return r;
|
|
}
|
|
|
|
inline map_handle::info txn_ref::get_handle_info(map_handle map) const {
|
|
unsigned flags, state;
|
|
error::success_or_throw(
|
|
::mdbx_dbi_flags_ex(handle_, map.dbi, &flags, &state));
|
|
return map_handle::info(MDBX_db_flags_t(flags), MDBX_dbi_state_t(state));
|
|
}
|
|
|
|
inline txn_ref &txn_ref::put_canary(const txn_ref::canary &canary) {
|
|
error::success_or_throw(::mdbx_canary_put(handle_, &canary));
|
|
return *this;
|
|
}
|
|
|
|
inline txn_ref::canary txn_ref::get_canary() const {
|
|
txn_ref::canary r;
|
|
error::success_or_throw(::mdbx_canary_get(handle_, &r));
|
|
return r;
|
|
}
|
|
|
|
inline uint64_t txn_ref::sequence(map_handle map) const {
|
|
uint64_t result;
|
|
error::success_or_throw(::mdbx_dbi_sequence(handle_, map.dbi, &result, 0));
|
|
return result;
|
|
}
|
|
|
|
inline uint64_t txn_ref::sequence(map_handle map, uint64_t increment) {
|
|
uint64_t result;
|
|
error::success_or_throw(
|
|
::mdbx_dbi_sequence(handle_, map.dbi, &result, increment));
|
|
return result;
|
|
}
|
|
|
|
inline int txn_ref::compare_keys(map_handle map, const slice &a,
|
|
const slice &b) const noexcept {
|
|
return ::mdbx_cmp(handle_, map.dbi, &a, &b);
|
|
}
|
|
|
|
inline int txn_ref::compare_values(map_handle map, const slice &a,
|
|
const slice &b) const noexcept {
|
|
return ::mdbx_dcmp(handle_, map.dbi, &a, &b);
|
|
}
|
|
|
|
inline int txn_ref::compare_keys(map_handle map, const pair &a,
|
|
const pair &b) const noexcept {
|
|
return compare_keys(map, a.key, b.key);
|
|
}
|
|
|
|
inline int txn_ref::compare_values(map_handle map, const pair &a,
|
|
const pair &b) const noexcept {
|
|
return compare_values(map, a.value, b.value);
|
|
}
|
|
|
|
inline slice txn_ref::get(map_handle map, const slice &key) const {
|
|
slice result;
|
|
error::success_or_throw(::mdbx_get(handle_, map.dbi, &key, &result));
|
|
return result;
|
|
}
|
|
|
|
inline slice txn_ref::get(map_handle map, slice key,
|
|
size_t &values_count) const {
|
|
slice result;
|
|
error::success_or_throw(
|
|
::mdbx_get_ex(handle_, map.dbi, &key, &result, &values_count));
|
|
return result;
|
|
}
|
|
|
|
inline slice txn_ref::get(map_handle map, const slice &key,
|
|
const slice &if_not_exists) const {
|
|
slice result;
|
|
const int err = ::mdbx_get(handle_, map.dbi, &key, &result);
|
|
switch (err) {
|
|
case MDBX_SUCCESS:
|
|
return result;
|
|
case MDBX_NOTFOUND:
|
|
return if_not_exists;
|
|
default:
|
|
cxx20_attribute_unlikely error::throw_exception(err);
|
|
}
|
|
}
|
|
|
|
inline slice txn_ref::get(map_handle map, slice key, size_t &values_count,
|
|
const slice &if_not_exists) const {
|
|
slice result;
|
|
const int err = ::mdbx_get_ex(handle_, map.dbi, &key, &result, &values_count);
|
|
switch (err) {
|
|
case MDBX_SUCCESS:
|
|
return result;
|
|
case MDBX_NOTFOUND:
|
|
return if_not_exists;
|
|
default:
|
|
cxx20_attribute_unlikely error::throw_exception(err);
|
|
}
|
|
}
|
|
|
|
inline pair txn_ref::get_equal_or_great(map_handle map,
|
|
const slice &key) const {
|
|
pair result{key, slice()};
|
|
error::success_or_throw(
|
|
::mdbx_get_equal_or_great(handle_, map.dbi, &result.key, &result.value));
|
|
return result;
|
|
}
|
|
|
|
inline pair txn_ref::get_equal_or_great(map_handle map, const slice &key,
|
|
const slice &if_not_exists) const {
|
|
pair result{key, slice()};
|
|
const int err =
|
|
::mdbx_get_equal_or_great(handle_, map.dbi, &result.key, &result.value);
|
|
switch (err) {
|
|
case MDBX_SUCCESS:
|
|
return result;
|
|
case MDBX_NOTFOUND:
|
|
return pair{key, if_not_exists};
|
|
default:
|
|
cxx20_attribute_unlikely error::throw_exception(err);
|
|
}
|
|
}
|
|
|
|
inline MDBX_error_t txn_ref::put(map_handle map, const slice &key, slice *value,
|
|
MDBX_put_flags_t flags) noexcept {
|
|
return MDBX_error_t(::mdbx_put(handle_, map.dbi, &key, value, flags));
|
|
}
|
|
|
|
inline void txn_ref::insert(map_handle map, const slice &key, slice value) {
|
|
error::success_or_throw(
|
|
put(map, key, &value /* takes the present value in case MDBX_KEYEXIST */,
|
|
MDBX_put_flags_t(put_mode::insert)));
|
|
}
|
|
|
|
inline value_result txn_ref::try_insert(map_handle map, const slice &key,
|
|
slice value) {
|
|
const int err =
|
|
put(map, key, &value /* takes the present value in case MDBX_KEYEXIST */,
|
|
MDBX_put_flags_t(put_mode::insert));
|
|
switch (err) {
|
|
case MDBX_SUCCESS:
|
|
return value_result{slice(), true};
|
|
case MDBX_KEYEXIST:
|
|
return value_result{value, false};
|
|
default:
|
|
cxx20_attribute_unlikely error::throw_exception(err);
|
|
}
|
|
}
|
|
|
|
inline slice txn_ref::insert_reserve(map_handle map, const slice &key,
|
|
size_t value_length) {
|
|
slice result(nullptr, value_length);
|
|
error::success_or_throw(
|
|
put(map, key, &result /* takes the present value in case MDBX_KEYEXIST */,
|
|
MDBX_put_flags_t(put_mode::insert) | MDBX_RESERVE));
|
|
return result;
|
|
}
|
|
|
|
inline value_result txn_ref::try_insert_reserve(map_handle map,
|
|
const slice &key,
|
|
size_t value_length) {
|
|
slice result(nullptr, value_length);
|
|
const int err =
|
|
put(map, key, &result /* takes the present value in case MDBX_KEYEXIST */,
|
|
MDBX_put_flags_t(put_mode::insert) | MDBX_RESERVE);
|
|
switch (err) {
|
|
case MDBX_SUCCESS:
|
|
return value_result{result, true};
|
|
case MDBX_KEYEXIST:
|
|
return value_result{result, false};
|
|
default:
|
|
cxx20_attribute_unlikely error::throw_exception(err);
|
|
}
|
|
}
|
|
|
|
inline void txn_ref::upsert(map_handle map, const slice &key,
|
|
const slice &value) {
|
|
error::success_or_throw(put(map, key, const_cast<slice *>(&value),
|
|
MDBX_put_flags_t(put_mode::upsert)));
|
|
}
|
|
|
|
inline slice txn_ref::upsert_reserve(map_handle map, const slice &key,
|
|
size_t value_length) {
|
|
slice result(nullptr, value_length);
|
|
error::success_or_throw(put(
|
|
map, key, &result, MDBX_put_flags_t(put_mode::upsert) | MDBX_RESERVE));
|
|
return result;
|
|
}
|
|
|
|
inline void txn_ref::update(map_handle map, const slice &key,
|
|
const slice &value) {
|
|
error::success_or_throw(put(map, key, const_cast<slice *>(&value),
|
|
MDBX_put_flags_t(put_mode::update)));
|
|
}
|
|
|
|
inline bool txn_ref::try_update(map_handle map, const slice &key,
|
|
const slice &value) {
|
|
const int err = put(map, key, const_cast<slice *>(&value),
|
|
MDBX_put_flags_t(put_mode::update));
|
|
switch (err) {
|
|
case MDBX_SUCCESS:
|
|
return true;
|
|
case MDBX_NOTFOUND:
|
|
return false;
|
|
default:
|
|
cxx20_attribute_unlikely error::throw_exception(err);
|
|
}
|
|
}
|
|
|
|
inline slice txn_ref::update_reserve(map_handle map, const slice &key,
|
|
size_t value_length) {
|
|
slice result(nullptr, value_length);
|
|
error::success_or_throw(put(
|
|
map, key, &result, MDBX_put_flags_t(put_mode::update) | MDBX_RESERVE));
|
|
return result;
|
|
}
|
|
|
|
inline value_result txn_ref::try_update_reserve(map_handle map,
|
|
const slice &key,
|
|
size_t value_length) {
|
|
slice result(nullptr, value_length);
|
|
const int err =
|
|
put(map, key, &result, MDBX_put_flags_t(put_mode::update) | MDBX_RESERVE);
|
|
switch (err) {
|
|
case MDBX_SUCCESS:
|
|
return value_result{result, true};
|
|
case MDBX_NOTFOUND:
|
|
return value_result{slice(), false};
|
|
default:
|
|
cxx20_attribute_unlikely error::throw_exception(err);
|
|
}
|
|
}
|
|
|
|
inline bool txn_ref::erase(map_handle map, const slice &key) {
|
|
const int err = ::mdbx_del(handle_, map.dbi, &key, nullptr);
|
|
switch (err) {
|
|
case MDBX_SUCCESS:
|
|
return true;
|
|
case MDBX_NOTFOUND:
|
|
return false;
|
|
default:
|
|
cxx20_attribute_unlikely error::throw_exception(err);
|
|
}
|
|
}
|
|
|
|
inline bool txn_ref::erase(map_handle map, const slice &key,
|
|
const slice &value) {
|
|
const int err = ::mdbx_del(handle_, map.dbi, &key, &value);
|
|
switch (err) {
|
|
case MDBX_SUCCESS:
|
|
return true;
|
|
case MDBX_NOTFOUND:
|
|
return false;
|
|
default:
|
|
cxx20_attribute_unlikely error::throw_exception(err);
|
|
}
|
|
}
|
|
|
|
inline void txn_ref::replace(map_handle map, const slice &key, slice old_value,
|
|
const slice &new_value) {
|
|
error::success_or_throw(::mdbx_replace_ex(
|
|
handle_, map.dbi, &key, const_cast<slice *>(&new_value), &old_value,
|
|
MDBX_CURRENT | MDBX_NOOVERWRITE, nullptr, nullptr));
|
|
}
|
|
|
|
template <class ALLOCATOR>
|
|
inline buffer<ALLOCATOR> txn_ref::extract(map_handle map, const slice &key,
|
|
const ALLOCATOR &allocator) {
|
|
buffer<ALLOCATOR> result(allocator);
|
|
typename buffer<ALLOCATOR>::data_preserver thunk;
|
|
error::success_or_throw(::mdbx_replace_ex(handle_, map.dbi, &key, nullptr,
|
|
&result.slice_, MDBX_CURRENT, thunk,
|
|
&thunk),
|
|
thunk);
|
|
return result;
|
|
}
|
|
|
|
template <class ALLOCATOR>
|
|
inline buffer<ALLOCATOR> txn_ref::replace(map_handle map, const slice &key,
|
|
const slice &new_value,
|
|
const ALLOCATOR &allocator) {
|
|
buffer<ALLOCATOR> result(allocator);
|
|
typename buffer<ALLOCATOR>::data_preserver thunk;
|
|
error::success_or_throw(
|
|
::mdbx_replace_ex(handle_, map.dbi, &key, const_cast<slice *>(&new_value),
|
|
&result.slice_, MDBX_CURRENT, thunk, &thunk),
|
|
thunk);
|
|
return result;
|
|
}
|
|
|
|
template <class ALLOCATOR>
|
|
inline buffer<ALLOCATOR>
|
|
txn_ref::replace_reserve(map_handle map, const slice &key, slice &new_value,
|
|
const ALLOCATOR &allocator) {
|
|
buffer<ALLOCATOR> result(allocator);
|
|
typename buffer<ALLOCATOR>::data_preserver thunk;
|
|
error::success_or_throw(
|
|
::mdbx_replace_ex(handle_, map.dbi, &key, &new_value, &result.slice_,
|
|
MDBX_CURRENT | MDBX_RESERVE, thunk, &thunk),
|
|
thunk);
|
|
return result;
|
|
}
|
|
|
|
inline void txn_ref::append(map_handle map, const slice &key,
|
|
const slice &value,
|
|
bool multivalue_order_preserved) {
|
|
error::success_or_throw(::mdbx_put(
|
|
handle_, map.dbi, const_cast<slice *>(&key), const_cast<slice *>(&value),
|
|
multivalue_order_preserved ? (MDBX_APPEND | MDBX_APPENDDUP)
|
|
: MDBX_APPEND));
|
|
}
|
|
|
|
inline size_t txn_ref::put_multiple(map_handle map, const slice &key,
|
|
const size_t value_length,
|
|
const void *values_array,
|
|
size_t values_count, put_mode mode,
|
|
bool allow_partial) {
|
|
MDBX_val args[2] = {{const_cast<void *>(values_array), value_length},
|
|
{nullptr, values_count}};
|
|
const int err = ::mdbx_put(handle_, map.dbi, const_cast<slice *>(&key), args,
|
|
MDBX_put_flags_t(mode) | MDBX_MULTIPLE);
|
|
switch (err) {
|
|
case MDBX_SUCCESS:
|
|
cxx20_attribute_likely break;
|
|
case MDBX_KEYEXIST:
|
|
if (allow_partial)
|
|
break;
|
|
mdbx_txn_break(handle_);
|
|
default:
|
|
cxx20_attribute_unlikely error::throw_exception(err);
|
|
}
|
|
return args[1].iov_len /* done item count */;
|
|
}
|
|
|
|
inline ptrdiff_t txn_ref::estimate(map_handle map, pair from, pair to) const {
|
|
ptrdiff_t result;
|
|
error::success_or_throw(mdbx_estimate_range(
|
|
handle_, map.dbi, &from.key, &from.value, &to.key, &to.value, &result));
|
|
return result;
|
|
}
|
|
|
|
inline ptrdiff_t txn_ref::estimate(map_handle map, slice from, slice to) const {
|
|
ptrdiff_t result;
|
|
error::success_or_throw(mdbx_estimate_range(handle_, map.dbi, &from, nullptr,
|
|
&to, nullptr, &result));
|
|
return result;
|
|
}
|
|
|
|
inline ptrdiff_t txn_ref::estimate_from_first(map_handle map, slice to) const {
|
|
ptrdiff_t result;
|
|
error::success_or_throw(mdbx_estimate_range(handle_, map.dbi, nullptr,
|
|
nullptr, &to, nullptr, &result));
|
|
return result;
|
|
}
|
|
|
|
inline ptrdiff_t txn_ref::estimate_to_last(map_handle map, slice from) const {
|
|
ptrdiff_t result;
|
|
error::success_or_throw(mdbx_estimate_range(handle_, map.dbi, &from, nullptr,
|
|
nullptr, nullptr, &result));
|
|
return result;
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
constexpr cursor_ref::cursor_ref(MDBX_cursor *ptr) noexcept : handle_(ptr) {}
|
|
|
|
inline cursor_ref &cursor_ref::operator=(cursor_ref &&other) noexcept {
|
|
handle_ = other.handle_;
|
|
other.handle_ = nullptr;
|
|
return *this;
|
|
}
|
|
|
|
inline cursor_ref::cursor_ref(cursor_ref &&other) noexcept
|
|
: handle_(other.handle_) {
|
|
other.handle_ = nullptr;
|
|
}
|
|
|
|
inline cursor_ref::~cursor_ref() noexcept {
|
|
#ifndef NDEBUG
|
|
handle_ = reinterpret_cast<MDBX_cursor *>(uintptr_t(0xDeadBeef));
|
|
#endif
|
|
}
|
|
|
|
constexpr cursor_ref::operator bool() const noexcept {
|
|
return handle_ != nullptr;
|
|
}
|
|
|
|
constexpr cursor_ref::operator const MDBX_cursor *() const { return handle_; }
|
|
|
|
inline cursor_ref::operator MDBX_cursor *() { return handle_; }
|
|
|
|
constexpr bool operator==(const cursor_ref &a, const cursor_ref &b) noexcept {
|
|
return a.handle_ == b.handle_;
|
|
}
|
|
|
|
constexpr bool operator!=(const cursor_ref &a, const cursor_ref &b) noexcept {
|
|
return a.handle_ != b.handle_;
|
|
}
|
|
|
|
inline cursor_ref::move_result::move_result(const cursor_ref &cursor,
|
|
bool throw_notfound) {
|
|
done = cursor.move(get_current, &key, &value, throw_notfound);
|
|
}
|
|
|
|
inline cursor_ref::move_result::move_result(cursor_ref &cursor,
|
|
move_operation operation,
|
|
bool throw_notfound) {
|
|
done = cursor.move(operation, &key, &value, throw_notfound);
|
|
}
|
|
|
|
inline cursor_ref::move_result::move_result(cursor_ref &cursor,
|
|
move_operation operation,
|
|
const slice &key,
|
|
bool throw_notfound) {
|
|
this->key = key;
|
|
this->done = cursor.move(operation, &this->key, &this->value, throw_notfound);
|
|
}
|
|
|
|
inline cursor_ref::move_result::move_result(cursor_ref &cursor,
|
|
move_operation operation,
|
|
const slice &key,
|
|
const slice &value,
|
|
bool throw_notfound) {
|
|
this->key = key;
|
|
this->value = value;
|
|
this->done = cursor.move(operation, &this->key, &this->value, throw_notfound);
|
|
}
|
|
|
|
inline bool cursor_ref::move(move_operation operation, MDBX_val *key,
|
|
MDBX_val *value, bool throw_notfound) const {
|
|
const int err =
|
|
::mdbx_cursor_get(handle_, key, value, MDBX_cursor_op(operation));
|
|
switch (err) {
|
|
case MDBX_SUCCESS:
|
|
cxx20_attribute_likely return true;
|
|
case MDBX_NOTFOUND:
|
|
if (!throw_notfound)
|
|
return false;
|
|
cxx17_attribute_fallthrough /* fallthrough */;
|
|
default:
|
|
cxx20_attribute_unlikely error::throw_exception(err);
|
|
}
|
|
}
|
|
|
|
inline ptrdiff_t cursor_ref::estimate(move_operation operation, MDBX_val *key,
|
|
MDBX_val *value) const {
|
|
ptrdiff_t result;
|
|
error::success_or_throw(::mdbx_estimate_move(
|
|
*this, key, value, MDBX_cursor_op(operation), &result));
|
|
return result;
|
|
}
|
|
|
|
inline ptrdiff_t estimate(const cursor_ref &from, const cursor_ref &to) {
|
|
ptrdiff_t result;
|
|
error::success_or_throw(mdbx_estimate_distance(from, to, &result));
|
|
return result;
|
|
}
|
|
|
|
inline cursor_ref::move_result cursor_ref::move(move_operation operation,
|
|
bool throw_notfound) {
|
|
return move_result(*this, operation, throw_notfound);
|
|
}
|
|
|
|
inline cursor_ref::move_result cursor_ref::to_first(bool throw_notfound) {
|
|
return move(first, throw_notfound);
|
|
}
|
|
|
|
inline cursor_ref::move_result cursor_ref::to_previous(bool throw_notfound) {
|
|
return move(previous, throw_notfound);
|
|
}
|
|
|
|
inline cursor_ref::move_result
|
|
cursor_ref::to_previous_last_multi(bool throw_notfound) {
|
|
return move(multi_prevkey_lastvalue, throw_notfound);
|
|
}
|
|
|
|
inline cursor_ref::move_result
|
|
cursor_ref::to_current_first_multi(bool throw_notfound) {
|
|
return move(multi_currentkey_firstvalue, throw_notfound);
|
|
}
|
|
|
|
inline cursor_ref::move_result
|
|
cursor_ref::to_current_prev_multi(bool throw_notfound) {
|
|
return move(multi_currentkey_prevvalue, throw_notfound);
|
|
}
|
|
|
|
inline cursor_ref::move_result cursor_ref::current(bool throw_notfound) const {
|
|
return move_result(*this, throw_notfound);
|
|
}
|
|
|
|
inline cursor_ref::move_result
|
|
cursor_ref::to_current_next_multi(bool throw_notfound) {
|
|
return move(multi_currentkey_nextvalue, throw_notfound);
|
|
}
|
|
|
|
inline cursor_ref::move_result
|
|
cursor_ref::to_current_last_multi(bool throw_notfound) {
|
|
return move(multi_currentkey_lastvalue, throw_notfound);
|
|
}
|
|
|
|
inline cursor_ref::move_result
|
|
cursor_ref::to_next_first_multi(bool throw_notfound) {
|
|
return move(multi_nextkey_firstvalue, throw_notfound);
|
|
}
|
|
|
|
inline cursor_ref::move_result cursor_ref::to_next(bool throw_notfound) {
|
|
return move(next, throw_notfound);
|
|
}
|
|
|
|
inline cursor_ref::move_result cursor_ref::to_last(bool throw_notfound) {
|
|
return move(last, throw_notfound);
|
|
}
|
|
|
|
inline cursor_ref::move_result cursor_ref::move(move_operation operation,
|
|
const slice &key,
|
|
bool throw_notfound) {
|
|
return move_result(*this, operation, key, throw_notfound);
|
|
}
|
|
|
|
inline cursor_ref::move_result cursor_ref::find(const slice &key,
|
|
bool throw_notfound) {
|
|
return move(key_exact, key, throw_notfound);
|
|
}
|
|
|
|
inline cursor_ref::move_result cursor_ref::lower_bound(const slice &key,
|
|
bool throw_notfound) {
|
|
return move(key_lowerbound, key, throw_notfound);
|
|
}
|
|
|
|
inline cursor_ref::move_result cursor_ref::move(move_operation operation,
|
|
const slice &key,
|
|
const slice &value,
|
|
bool throw_notfound) {
|
|
return move_result(*this, operation, key, value, throw_notfound);
|
|
}
|
|
|
|
inline cursor_ref::move_result
|
|
cursor_ref::find_multivalue(const slice &key, const slice &value,
|
|
bool throw_notfound) {
|
|
return move(key_exact, key, value, throw_notfound);
|
|
}
|
|
|
|
inline cursor_ref::move_result
|
|
cursor_ref::lower_bound_multivalue(const slice &key, const slice &value,
|
|
bool throw_notfound) {
|
|
return move(multi_exactkey_lowerboundvalue, key, value, throw_notfound);
|
|
}
|
|
|
|
inline bool cursor_ref::seek(const slice &key) {
|
|
return move(find_key, const_cast<slice *>(&key), nullptr, false);
|
|
}
|
|
|
|
inline bool cursor_ref::move(move_operation operation, slice &key, slice &value,
|
|
bool throw_notfound) {
|
|
return move(operation, &key, &value, throw_notfound);
|
|
}
|
|
|
|
inline size_t cursor_ref::count_multivalue() const {
|
|
size_t result;
|
|
error::success_or_throw(::mdbx_cursor_count(*this, &result));
|
|
return result;
|
|
}
|
|
|
|
inline bool cursor_ref::eof() const {
|
|
return error::boolean_or_throw(::mdbx_cursor_eof(*this));
|
|
}
|
|
|
|
inline bool cursor_ref::on_first() const {
|
|
return error::boolean_or_throw(::mdbx_cursor_on_first(*this));
|
|
}
|
|
|
|
inline bool cursor_ref::on_last() const {
|
|
return error::boolean_or_throw(::mdbx_cursor_on_last(*this));
|
|
}
|
|
|
|
inline ptrdiff_t cursor_ref::estimate(slice key, slice value) const {
|
|
return estimate(multi_exactkey_lowerboundvalue, &key, &value);
|
|
}
|
|
|
|
inline ptrdiff_t cursor_ref::estimate(slice key) const {
|
|
return estimate(key_lowerbound, &key, nullptr);
|
|
}
|
|
|
|
inline ptrdiff_t cursor_ref::estimate(move_operation operation) const {
|
|
slice unused_key;
|
|
return estimate(operation, &unused_key, nullptr);
|
|
}
|
|
|
|
inline void cursor_ref::renew(::mdbx::txn_ref &txn) {
|
|
error::success_or_throw(::mdbx_cursor_renew(txn, handle_));
|
|
}
|
|
|
|
inline txn_ref cursor_ref::txn() const {
|
|
MDBX_txn *txn = ::mdbx_cursor_txn(handle_);
|
|
error::throw_on_nullptr(txn, MDBX_EINVAL);
|
|
return ::mdbx::txn_ref(txn);
|
|
}
|
|
|
|
inline map_handle cursor_ref::map() const {
|
|
const MDBX_dbi dbi = ::mdbx_cursor_dbi(handle_);
|
|
if (mdbx_unlikely(dbi > MDBX_MAX_DBI))
|
|
error::throw_exception(MDBX_EINVAL);
|
|
return map_handle(dbi);
|
|
}
|
|
|
|
inline MDBX_error_t cursor_ref::put(const slice &key, slice *value,
|
|
MDBX_put_flags_t flags) noexcept {
|
|
return MDBX_error_t(::mdbx_cursor_put(handle_, &key, value, flags));
|
|
}
|
|
|
|
inline void cursor_ref::insert(const slice &key, slice value) {
|
|
error::success_or_throw(
|
|
put(key, &value /* takes the present value in case MDBX_KEYEXIST */,
|
|
MDBX_put_flags_t(put_mode::insert)));
|
|
}
|
|
|
|
inline value_result cursor_ref::try_insert(const slice &key, slice value) {
|
|
const int err =
|
|
put(key, &value /* takes the present value in case MDBX_KEYEXIST */,
|
|
MDBX_put_flags_t(put_mode::insert));
|
|
switch (err) {
|
|
case MDBX_SUCCESS:
|
|
return value_result{slice(), true};
|
|
case MDBX_KEYEXIST:
|
|
return value_result{value, false};
|
|
default:
|
|
cxx20_attribute_unlikely error::throw_exception(err);
|
|
}
|
|
}
|
|
|
|
inline slice cursor_ref::insert_reserve(const slice &key, size_t value_length) {
|
|
slice result(nullptr, value_length);
|
|
error::success_or_throw(
|
|
put(key, &result /* takes the present value in case MDBX_KEYEXIST */,
|
|
MDBX_put_flags_t(put_mode::insert) | MDBX_RESERVE));
|
|
return result;
|
|
}
|
|
|
|
inline value_result cursor_ref::try_insert_reserve(const slice &key,
|
|
size_t value_length) {
|
|
slice result(nullptr, value_length);
|
|
const int err =
|
|
put(key, &result /* takes the present value in case MDBX_KEYEXIST */,
|
|
MDBX_put_flags_t(put_mode::insert) | MDBX_RESERVE);
|
|
switch (err) {
|
|
case MDBX_SUCCESS:
|
|
return value_result{result, true};
|
|
case MDBX_KEYEXIST:
|
|
return value_result{result, false};
|
|
default:
|
|
cxx20_attribute_unlikely error::throw_exception(err);
|
|
}
|
|
}
|
|
|
|
inline void cursor_ref::upsert(const slice &key, const slice &value) {
|
|
error::success_or_throw(put(key, const_cast<slice *>(&value),
|
|
MDBX_put_flags_t(put_mode::upsert)));
|
|
}
|
|
|
|
inline slice cursor_ref::upsert_reserve(const slice &key, size_t value_length) {
|
|
slice result(nullptr, value_length);
|
|
error::success_or_throw(
|
|
put(key, &result, MDBX_put_flags_t(put_mode::upsert) | MDBX_RESERVE));
|
|
return result;
|
|
}
|
|
|
|
inline void cursor_ref::update(const slice &key, const slice &value) {
|
|
error::success_or_throw(put(key, const_cast<slice *>(&value),
|
|
MDBX_put_flags_t(put_mode::update)));
|
|
}
|
|
|
|
inline bool cursor_ref::try_update(const slice &key, const slice &value) {
|
|
const int err =
|
|
put(key, const_cast<slice *>(&value), MDBX_put_flags_t(put_mode::update));
|
|
switch (err) {
|
|
case MDBX_SUCCESS:
|
|
return true;
|
|
case MDBX_NOTFOUND:
|
|
return false;
|
|
default:
|
|
cxx20_attribute_unlikely error::throw_exception(err);
|
|
}
|
|
}
|
|
|
|
inline slice cursor_ref::update_reserve(const slice &key, size_t value_length) {
|
|
slice result(nullptr, value_length);
|
|
error::success_or_throw(
|
|
put(key, &result, MDBX_put_flags_t(put_mode::update) | MDBX_RESERVE));
|
|
return result;
|
|
}
|
|
|
|
inline value_result cursor_ref::try_update_reserve(const slice &key,
|
|
size_t value_length) {
|
|
slice result(nullptr, value_length);
|
|
const int err =
|
|
put(key, &result, MDBX_put_flags_t(put_mode::update) | MDBX_RESERVE);
|
|
switch (err) {
|
|
case MDBX_SUCCESS:
|
|
return value_result{result, true};
|
|
case MDBX_NOTFOUND:
|
|
return value_result{slice(), false};
|
|
default:
|
|
cxx20_attribute_unlikely error::throw_exception(err);
|
|
}
|
|
}
|
|
|
|
inline bool cursor_ref::erase(bool whole_multivalue) {
|
|
const int err = ::mdbx_cursor_del(handle_, whole_multivalue ? MDBX_ALLDUPS
|
|
: MDBX_CURRENT);
|
|
switch (err) {
|
|
case MDBX_SUCCESS:
|
|
cxx20_attribute_likely return true;
|
|
case MDBX_NOTFOUND:
|
|
return false;
|
|
default:
|
|
cxx20_attribute_unlikely error::throw_exception(err);
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
template <class ALLOCATOR>
|
|
inline buffer<ALLOCATOR>::buffer(const txn_ref &txn, const slice &src,
|
|
const ALLOCATOR &allocator)
|
|
: buffer(src, !txn.is_dirty(src.data()), allocator) {}
|
|
|
|
template <class ALLOCATOR>
|
|
inline buffer<ALLOCATOR>::buffer(size_t head_room, size_t tail_room,
|
|
const ALLOCATOR &allocator)
|
|
: silo_(allocator) {
|
|
if (mdbx_unlikely(head_room > max_length || tail_room > max_length ||
|
|
head_room + tail_room > max_length))
|
|
throw_max_length_exceeded();
|
|
silo_.reserve(head_room + tail_room);
|
|
silo_.append(head_room, '\0');
|
|
slice_.iov_base = const_cast<char *>(silo_.data());
|
|
assert(slice_.iov_len == 0);
|
|
}
|
|
|
|
template <class ALLOCATOR>
|
|
inline buffer<ALLOCATOR>::buffer(size_t capacity, const ALLOCATOR &allocator)
|
|
: silo_(allocator) {
|
|
silo_.reserve(check_length(capacity));
|
|
slice_.iov_base = const_cast<char *>(silo_.data());
|
|
assert(slice_.iov_len == 0);
|
|
}
|
|
|
|
template <class ALLOCATOR>
|
|
inline buffer<ALLOCATOR>::buffer(size_t head_room, const slice &src,
|
|
size_t tail_room, const ALLOCATOR &allocator)
|
|
: silo_(allocator) {
|
|
if (mdbx_unlikely(head_room > max_length || tail_room > max_length ||
|
|
head_room + tail_room > max_length - slice_.length()))
|
|
throw_max_length_exceeded();
|
|
silo_.reserve(head_room + src.length() + tail_room);
|
|
silo_.append(head_room, '\0');
|
|
silo_.append(src.char_ptr(), src.length());
|
|
slice_.iov_base = const_cast<char *>(silo_.data());
|
|
slice_.iov_len = src.length();
|
|
}
|
|
|
|
template <class ALLOCATOR>
|
|
inline void buffer<ALLOCATOR>::reserve(size_t wanna_headroom,
|
|
size_t wanna_tailroom,
|
|
size_t shrink_threshold) {
|
|
if (mdbx_unlikely(
|
|
wanna_headroom > max_length || wanna_tailroom > max_length ||
|
|
wanna_headroom + wanna_tailroom > max_length - slice_.length()))
|
|
throw_max_length_exceeded();
|
|
|
|
wanna_headroom = std::min(std::max(headroom(), wanna_headroom),
|
|
wanna_headroom + shrink_threshold);
|
|
wanna_tailroom = std::min(std::max(tailroom(), wanna_tailroom),
|
|
wanna_tailroom + shrink_threshold);
|
|
const auto wanna_capacity = wanna_headroom + slice_.length() + wanna_tailroom;
|
|
if (is_reference() || slice_.empty()) {
|
|
silo_.reserve(wanna_capacity);
|
|
silo_.resize(wanna_headroom);
|
|
silo_.append(slice_.char_ptr(), slice_.length());
|
|
} else {
|
|
const auto was_headroom = headroom();
|
|
if (was_headroom > wanna_headroom)
|
|
silo_.erase(wanna_headroom, was_headroom - wanna_headroom);
|
|
silo_.reserve(wanna_capacity);
|
|
if (was_headroom < wanna_headroom)
|
|
silo_.insert(was_headroom, wanna_headroom - was_headroom, '\0');
|
|
}
|
|
slice_.iov_base = const_cast<byte *>(silo_begin()) + wanna_headroom;
|
|
assert(headroom() >= wanna_headroom &&
|
|
headroom() <= wanna_headroom + shrink_threshold);
|
|
assert(tailroom() >= wanna_tailroom &&
|
|
tailroom() <= wanna_tailroom + shrink_threshold);
|
|
}
|
|
|
|
template <class ALLOCATOR>
|
|
inline buffer<ALLOCATOR> &buffer<ALLOCATOR>::append(const void *src,
|
|
size_t bytes) {
|
|
if (mdbx_unlikely(tailroom() < check_length(bytes)))
|
|
reserve(0, bytes);
|
|
std::memcpy(static_cast<char *>(slice_.iov_base) + size(), src, bytes);
|
|
slice_.iov_len += bytes;
|
|
return *this;
|
|
}
|
|
|
|
template <class ALLOCATOR>
|
|
inline buffer<ALLOCATOR> &buffer<ALLOCATOR>::add_header(const void *src,
|
|
size_t bytes) {
|
|
if (mdbx_unlikely(headroom() < check_length(bytes)))
|
|
reserve(bytes, 0);
|
|
slice_.iov_base =
|
|
std::memcpy(static_cast<char *>(slice_.iov_base) - bytes, src, bytes);
|
|
slice_.iov_len += bytes;
|
|
return *this;
|
|
}
|
|
|
|
template <class ALLOCATOR>
|
|
inline void buffer<ALLOCATOR>::swap(buffer &other)
|
|
#if defined(__cpp_noexcept_function_type) && \
|
|
__cpp_noexcept_function_type >= 201510L
|
|
noexcept(
|
|
std::allocator_traits<ALLOCATOR>::propagate_on_container_swap::value
|
|
#if defined(__cpp_lib_allocator_traits_is_always_equal) && \
|
|
__cpp_lib_allocator_traits_is_always_equal >= 201411L
|
|
|| std::allocator_traits<ALLOCATOR>::is_always_equal::value
|
|
#endif /* __cpp_lib_allocator_traits_is_always_equal */
|
|
)
|
|
#endif /* __cpp_noexcept_function_type */
|
|
{
|
|
if /* checking the equality of allocators to avoid UB */
|
|
#if defined(__cpp_if_constexpr) && __cpp_if_constexpr >= 201606L
|
|
constexpr
|
|
#endif
|
|
(!std::allocator_traits<ALLOCATOR>::propagate_on_container_swap::value
|
|
#if defined(__cpp_lib_allocator_traits_is_always_equal) && \
|
|
__cpp_lib_allocator_traits_is_always_equal >= 201411L
|
|
&& !std::allocator_traits<ALLOCATOR>::is_always_equal::value
|
|
#endif /* __cpp_lib_allocator_traits_is_always_equal */
|
|
) {
|
|
if (mdbx_unlikely(silo_.get_allocator() != other.silo_.get_allocator()))
|
|
throw std::bad_alloc();
|
|
}
|
|
silo_.swap(other.silo_);
|
|
slice_.swap(other.slice_);
|
|
}
|
|
|
|
template <class ALLOCATOR>
|
|
inline int buffer<ALLOCATOR>::data_preserver::callback(void *context,
|
|
MDBX_val *target,
|
|
const void *src,
|
|
size_t bytes) noexcept {
|
|
const auto self = static_cast<data_preserver *>(context);
|
|
assert(self->is_clean());
|
|
try {
|
|
owner_of(static_cast<slice *>(target), &buffer::slice_)
|
|
->assign(src, bytes, false);
|
|
return MDBX_RESULT_FALSE;
|
|
} catch (... /* capture any exception to rethrow it over C code */) {
|
|
self->capture();
|
|
return MDBX_RESULT_TRUE;
|
|
}
|
|
}
|
|
|
|
} // namespace mdbx
|
|
|
|
/* Undo workaround for GNU C++ < 6.x */
|
|
#ifdef constexpr
|
|
#undef constexpr
|
|
#endif
|
|
|
|
#ifdef _MSC_VER
|
|
#pragma warning(pop)
|
|
#endif
|
|
|
|
/// @} end of C++ API
|