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mdbx: rename internal functions, types and macros (to be closer to MithrilDB).

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This commit is contained in:
Леонид Юрьев (Leonid Yuriev)
2022-08-11 01:03:15 +03:00
parent 096d6a9bd6
commit 18e557c6e8
15 changed files with 3754 additions and 3933 deletions
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237
src/osal.h
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@@ -58,7 +58,7 @@
#include <sys/cachectl.h>
#endif
MDBX_MAYBE_UNUSED static __inline void mdbx_compiler_barrier(void) {
MDBX_MAYBE_UNUSED static __inline void osal_compiler_barrier(void) {
#if defined(__clang__) || defined(__GNUC__)
__asm__ __volatile__("" ::: "memory");
#elif defined(_MSC_VER)
@@ -78,7 +78,7 @@ MDBX_MAYBE_UNUSED static __inline void mdbx_compiler_barrier(void) {
#endif
}
MDBX_MAYBE_UNUSED static __inline void mdbx_memory_barrier(void) {
MDBX_MAYBE_UNUSED static __inline void osal_memory_barrier(void) {
#ifdef MDBX_HAVE_C11ATOMICS
atomic_thread_fence(memory_order_seq_cst);
#elif defined(__ATOMIC_SEQ_CST)
@@ -116,8 +116,8 @@ MDBX_MAYBE_UNUSED static __inline void mdbx_memory_barrier(void) {
#if defined(_WIN32) || defined(_WIN64)
#define HAVE_SYS_STAT_H
#define HAVE_SYS_TYPES_H
typedef HANDLE mdbx_thread_t;
typedef unsigned mdbx_thread_key_t;
typedef HANDLE osal_thread_t;
typedef unsigned osal_thread_key_t;
#define MAP_FAILED NULL
#define HIGH_DWORD(v) ((DWORD)((sizeof(v) > 4) ? ((uint64_t)(v) >> 32) : 0))
#define THREAD_CALL WINAPI
@@ -125,8 +125,8 @@ typedef unsigned mdbx_thread_key_t;
typedef struct {
HANDLE mutex;
HANDLE event[2];
} mdbx_condpair_t;
typedef CRITICAL_SECTION mdbx_fastmutex_t;
} osal_condpair_t;
typedef CRITICAL_SECTION osal_fastmutex_t;
#if !defined(_MSC_VER) && !defined(__try)
/* *INDENT-OFF* */
@@ -139,36 +139,36 @@ typedef CRITICAL_SECTION mdbx_fastmutex_t;
#if MDBX_WITHOUT_MSVC_CRT
#ifndef mdbx_malloc
static inline void *mdbx_malloc(size_t bytes) {
#ifndef osal_malloc
static inline void *osal_malloc(size_t bytes) {
return HeapAlloc(GetProcessHeap(), 0, bytes);
}
#endif /* mdbx_malloc */
#endif /* osal_malloc */
#ifndef mdbx_calloc
static inline void *mdbx_calloc(size_t nelem, size_t size) {
#ifndef osal_calloc
static inline void *osal_calloc(size_t nelem, size_t size) {
return HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, nelem * size);
}
#endif /* mdbx_calloc */
#endif /* osal_calloc */
#ifndef mdbx_realloc
static inline void *mdbx_realloc(void *ptr, size_t bytes) {
#ifndef osal_realloc
static inline void *osal_realloc(void *ptr, size_t bytes) {
return ptr ? HeapReAlloc(GetProcessHeap(), 0, ptr, bytes)
: HeapAlloc(GetProcessHeap(), 0, bytes);
}
#endif /* mdbx_realloc */
#endif /* osal_realloc */
#ifndef mdbx_free
static inline void mdbx_free(void *ptr) { HeapFree(GetProcessHeap(), 0, ptr); }
#endif /* mdbx_free */
#ifndef osal_free
static inline void osal_free(void *ptr) { HeapFree(GetProcessHeap(), 0, ptr); }
#endif /* osal_free */
#else /* MDBX_WITHOUT_MSVC_CRT */
#define mdbx_malloc malloc
#define mdbx_calloc calloc
#define mdbx_realloc realloc
#define mdbx_free free
#define mdbx_strdup _strdup
#define osal_malloc malloc
#define osal_calloc calloc
#define osal_realloc realloc
#define osal_free free
#define osal_strdup _strdup
#endif /* MDBX_WITHOUT_MSVC_CRT */
@@ -180,26 +180,26 @@ static inline void mdbx_free(void *ptr) { HeapFree(GetProcessHeap(), 0, ptr); }
#define vsnprintf _vsnprintf /* ntdll */
#endif
MDBX_INTERNAL_FUNC size_t mdbx_mb2w(wchar_t *dst, size_t dst_n, const char *src,
MDBX_INTERNAL_FUNC size_t osal_mb2w(wchar_t *dst, size_t dst_n, const char *src,
size_t src_n);
#else /*----------------------------------------------------------------------*/
typedef pthread_t mdbx_thread_t;
typedef pthread_key_t mdbx_thread_key_t;
typedef pthread_t osal_thread_t;
typedef pthread_key_t osal_thread_key_t;
#define INVALID_HANDLE_VALUE (-1)
#define THREAD_CALL
#define THREAD_RESULT void *
typedef struct {
pthread_mutex_t mutex;
pthread_cond_t cond[2];
} mdbx_condpair_t;
typedef pthread_mutex_t mdbx_fastmutex_t;
#define mdbx_malloc malloc
#define mdbx_calloc calloc
#define mdbx_realloc realloc
#define mdbx_free free
#define mdbx_strdup strdup
} osal_condpair_t;
typedef pthread_mutex_t osal_fastmutex_t;
#define osal_malloc malloc
#define osal_calloc calloc
#define osal_realloc realloc
#define osal_free free
#define osal_strdup strdup
#endif /* Platform */
#if __GLIBC_PREREQ(2, 12) || defined(__FreeBSD__) || defined(malloc_usable_size)
@@ -217,7 +217,7 @@ typedef pthread_mutex_t mdbx_fastmutex_t;
* This is the basic size that the platform's memory manager uses, and is
* fundamental to the use of memory-mapped files. */
MDBX_MAYBE_UNUSED MDBX_NOTHROW_CONST_FUNCTION static __inline size_t
mdbx_syspagesize(void) {
osal_syspagesize(void) {
#if defined(_WIN32) || defined(_WIN64)
SYSTEM_INFO si;
GetSystemInfo(&si);
@@ -233,7 +233,7 @@ typedef wchar_t pathchar_t;
typedef char pathchar_t;
#endif
typedef struct mdbx_mmap_param {
typedef struct osal_mmap_param {
union {
void *address;
uint8_t *dxb;
@@ -246,7 +246,7 @@ typedef struct mdbx_mmap_param {
#if defined(_WIN32) || defined(_WIN64)
HANDLE section; /* memory-mapped section handle */
#endif
} mdbx_mmap_t;
} osal_mmap_t;
typedef union bin128 {
__anonymous_struct_extension__ struct { uint64_t x, y; };
@@ -254,13 +254,13 @@ typedef union bin128 {
} bin128_t;
#if defined(_WIN32) || defined(_WIN64)
typedef union MDBX_srwlock {
typedef union osal_srwlock {
__anonymous_struct_extension__ struct {
long volatile readerCount;
long volatile writerCount;
};
RTL_SRWLOCK native;
} MDBX_srwlock;
} osal_srwlock_t;
#endif /* Windows */
#ifndef __cplusplus
@@ -270,12 +270,12 @@ typedef union MDBX_srwlock {
#if (!defined(__GLIBC__) && __GLIBC_PREREQ(2, 1)) && \
(defined(_GNU_SOURCE) || defined(_BSD_SOURCE))
#define mdbx_asprintf asprintf
#define mdbx_vasprintf vasprintf
#define osal_asprintf asprintf
#define osal_vasprintf vasprintf
#else
MDBX_MAYBE_UNUSED MDBX_INTERNAL_FUNC
MDBX_PRINTF_ARGS(2, 3) int mdbx_asprintf(char **strp, const char *fmt, ...);
MDBX_INTERNAL_FUNC int mdbx_vasprintf(char **strp, const char *fmt, va_list ap);
MDBX_PRINTF_ARGS(2, 3) int osal_asprintf(char **strp, const char *fmt, ...);
MDBX_INTERNAL_FUNC int osal_vasprintf(char **strp, const char *fmt, va_list ap);
#endif
#if !defined(MADV_DODUMP) && defined(MADV_CORE)
@@ -286,8 +286,8 @@ MDBX_INTERNAL_FUNC int mdbx_vasprintf(char **strp, const char *fmt, va_list ap);
#define MADV_DONTDUMP MADV_NOCORE
#endif /* MADV_NOCORE -> MADV_DONTDUMP */
MDBX_MAYBE_UNUSED MDBX_INTERNAL_FUNC void mdbx_osal_jitter(bool tiny);
MDBX_MAYBE_UNUSED static __inline void mdbx_jitter4testing(bool tiny);
MDBX_MAYBE_UNUSED MDBX_INTERNAL_FUNC void osal_jitter(bool tiny);
MDBX_MAYBE_UNUSED static __inline void jitter4testing(bool tiny);
/* max bytes to write in one call */
#if defined(_WIN32) || defined(_WIN64)
@@ -297,15 +297,15 @@ MDBX_MAYBE_UNUSED static __inline void mdbx_jitter4testing(bool tiny);
#endif
#if defined(__linux__) || defined(__gnu_linux__)
MDBX_INTERNAL_VAR uint32_t mdbx_linux_kernel_version;
MDBX_INTERNAL_VAR uint32_t linux_kernel_version;
MDBX_INTERNAL_VAR bool mdbx_RunningOnWSL1 /* Windows Subsystem 1 for Linux */;
#endif /* Linux */
#ifndef mdbx_strdup
LIBMDBX_API char *mdbx_strdup(const char *str);
#ifndef osal_strdup
LIBMDBX_API char *osal_strdup(const char *str);
#endif
MDBX_MAYBE_UNUSED static __inline int mdbx_get_errno(void) {
MDBX_MAYBE_UNUSED static __inline int osal_get_errno(void) {
#if defined(_WIN32) || defined(_WIN64)
DWORD rc = GetLastError();
#else
@@ -314,57 +314,57 @@ MDBX_MAYBE_UNUSED static __inline int mdbx_get_errno(void) {
return rc;
}
#ifndef mdbx_memalign_alloc
MDBX_INTERNAL_FUNC int mdbx_memalign_alloc(size_t alignment, size_t bytes,
#ifndef osal_memalign_alloc
MDBX_INTERNAL_FUNC int osal_memalign_alloc(size_t alignment, size_t bytes,
void **result);
#endif
#ifndef mdbx_memalign_free
MDBX_INTERNAL_FUNC void mdbx_memalign_free(void *ptr);
#ifndef osal_memalign_free
MDBX_INTERNAL_FUNC void osal_memalign_free(void *ptr);
#endif
MDBX_INTERNAL_FUNC int mdbx_condpair_init(mdbx_condpair_t *condpair);
MDBX_INTERNAL_FUNC int mdbx_condpair_lock(mdbx_condpair_t *condpair);
MDBX_INTERNAL_FUNC int mdbx_condpair_unlock(mdbx_condpair_t *condpair);
MDBX_INTERNAL_FUNC int mdbx_condpair_signal(mdbx_condpair_t *condpair,
MDBX_INTERNAL_FUNC int osal_condpair_init(osal_condpair_t *condpair);
MDBX_INTERNAL_FUNC int osal_condpair_lock(osal_condpair_t *condpair);
MDBX_INTERNAL_FUNC int osal_condpair_unlock(osal_condpair_t *condpair);
MDBX_INTERNAL_FUNC int osal_condpair_signal(osal_condpair_t *condpair,
bool part);
MDBX_INTERNAL_FUNC int mdbx_condpair_wait(mdbx_condpair_t *condpair, bool part);
MDBX_INTERNAL_FUNC int mdbx_condpair_destroy(mdbx_condpair_t *condpair);
MDBX_INTERNAL_FUNC int osal_condpair_wait(osal_condpair_t *condpair, bool part);
MDBX_INTERNAL_FUNC int osal_condpair_destroy(osal_condpair_t *condpair);
MDBX_INTERNAL_FUNC int mdbx_fastmutex_init(mdbx_fastmutex_t *fastmutex);
MDBX_INTERNAL_FUNC int mdbx_fastmutex_acquire(mdbx_fastmutex_t *fastmutex);
MDBX_INTERNAL_FUNC int mdbx_fastmutex_release(mdbx_fastmutex_t *fastmutex);
MDBX_INTERNAL_FUNC int mdbx_fastmutex_destroy(mdbx_fastmutex_t *fastmutex);
MDBX_INTERNAL_FUNC int osal_fastmutex_init(osal_fastmutex_t *fastmutex);
MDBX_INTERNAL_FUNC int osal_fastmutex_acquire(osal_fastmutex_t *fastmutex);
MDBX_INTERNAL_FUNC int osal_fastmutex_release(osal_fastmutex_t *fastmutex);
MDBX_INTERNAL_FUNC int osal_fastmutex_destroy(osal_fastmutex_t *fastmutex);
MDBX_INTERNAL_FUNC int mdbx_pwritev(mdbx_filehandle_t fd, struct iovec *iov,
MDBX_INTERNAL_FUNC int osal_pwritev(mdbx_filehandle_t fd, struct iovec *iov,
int iovcnt, uint64_t offset,
size_t expected_written);
MDBX_INTERNAL_FUNC int mdbx_pread(mdbx_filehandle_t fd, void *buf, size_t count,
MDBX_INTERNAL_FUNC int osal_pread(mdbx_filehandle_t fd, void *buf, size_t count,
uint64_t offset);
MDBX_INTERNAL_FUNC int mdbx_pwrite(mdbx_filehandle_t fd, const void *buf,
MDBX_INTERNAL_FUNC int osal_pwrite(mdbx_filehandle_t fd, const void *buf,
size_t count, uint64_t offset);
MDBX_INTERNAL_FUNC int mdbx_write(mdbx_filehandle_t fd, const void *buf,
MDBX_INTERNAL_FUNC int osal_write(mdbx_filehandle_t fd, const void *buf,
size_t count);
MDBX_INTERNAL_FUNC int
mdbx_thread_create(mdbx_thread_t *thread,
osal_thread_create(osal_thread_t *thread,
THREAD_RESULT(THREAD_CALL *start_routine)(void *),
void *arg);
MDBX_INTERNAL_FUNC int mdbx_thread_join(mdbx_thread_t thread);
MDBX_INTERNAL_FUNC int osal_thread_join(osal_thread_t thread);
enum mdbx_syncmode_bits {
enum osal_syncmode_bits {
MDBX_SYNC_NONE = 0,
MDBX_SYNC_DATA = 1,
MDBX_SYNC_SIZE = 2,
MDBX_SYNC_IODQ = 4
};
MDBX_INTERNAL_FUNC int mdbx_fsync(mdbx_filehandle_t fd,
const enum mdbx_syncmode_bits mode_bits);
MDBX_INTERNAL_FUNC int mdbx_ftruncate(mdbx_filehandle_t fd, uint64_t length);
MDBX_INTERNAL_FUNC int mdbx_fseek(mdbx_filehandle_t fd, uint64_t pos);
MDBX_INTERNAL_FUNC int mdbx_filesize(mdbx_filehandle_t fd, uint64_t *length);
MDBX_INTERNAL_FUNC int osal_fsync(mdbx_filehandle_t fd,
const enum osal_syncmode_bits mode_bits);
MDBX_INTERNAL_FUNC int osal_ftruncate(mdbx_filehandle_t fd, uint64_t length);
MDBX_INTERNAL_FUNC int osal_fseek(mdbx_filehandle_t fd, uint64_t pos);
MDBX_INTERNAL_FUNC int osal_filesize(mdbx_filehandle_t fd, uint64_t *length);
enum mdbx_openfile_purpose {
enum osal_openfile_purpose {
MDBX_OPEN_DXB_READ = 0,
MDBX_OPEN_DXB_LAZY = 1,
MDBX_OPEN_DXB_DSYNC = 2,
@@ -373,26 +373,26 @@ enum mdbx_openfile_purpose {
MDBX_OPEN_DELETE = 5
};
MDBX_INTERNAL_FUNC int mdbx_openfile(const enum mdbx_openfile_purpose purpose,
MDBX_INTERNAL_FUNC int osal_openfile(const enum osal_openfile_purpose purpose,
const MDBX_env *env,
const pathchar_t *pathname,
mdbx_filehandle_t *fd,
mdbx_mode_t unix_mode_bits);
MDBX_INTERNAL_FUNC int mdbx_closefile(mdbx_filehandle_t fd);
MDBX_INTERNAL_FUNC int mdbx_removefile(const pathchar_t *pathname);
MDBX_INTERNAL_FUNC int mdbx_removedirectory(const pathchar_t *pathname);
MDBX_INTERNAL_FUNC int mdbx_is_pipe(mdbx_filehandle_t fd);
MDBX_INTERNAL_FUNC int mdbx_lockfile(mdbx_filehandle_t fd, bool wait);
MDBX_INTERNAL_FUNC int osal_closefile(mdbx_filehandle_t fd);
MDBX_INTERNAL_FUNC int osal_removefile(const pathchar_t *pathname);
MDBX_INTERNAL_FUNC int osal_removedirectory(const pathchar_t *pathname);
MDBX_INTERNAL_FUNC int osal_is_pipe(mdbx_filehandle_t fd);
MDBX_INTERNAL_FUNC int osal_lockfile(mdbx_filehandle_t fd, bool wait);
#define MMAP_OPTION_TRUNCATE 1
#define MMAP_OPTION_SEMAPHORE 2
MDBX_INTERNAL_FUNC int mdbx_mmap(const int flags, mdbx_mmap_t *map,
MDBX_INTERNAL_FUNC int osal_mmap(const int flags, osal_mmap_t *map,
const size_t must, const size_t limit,
const unsigned options);
MDBX_INTERNAL_FUNC int mdbx_munmap(mdbx_mmap_t *map);
MDBX_INTERNAL_FUNC int osal_munmap(osal_mmap_t *map);
#define MDBX_MRESIZE_MAY_MOVE 0x00000100
#define MDBX_MRESIZE_MAY_UNMAP 0x00000200
MDBX_INTERNAL_FUNC int mdbx_mresize(const int flags, mdbx_mmap_t *map,
MDBX_INTERNAL_FUNC int osal_mresize(const int flags, osal_mmap_t *map,
size_t size, size_t limit);
#if defined(_WIN32) || defined(_WIN64)
typedef struct {
@@ -400,18 +400,18 @@ typedef struct {
HANDLE handles[31];
} mdbx_handle_array_t;
MDBX_INTERNAL_FUNC int
mdbx_suspend_threads_before_remap(MDBX_env *env, mdbx_handle_array_t **array);
osal_suspend_threads_before_remap(MDBX_env *env, mdbx_handle_array_t **array);
MDBX_INTERNAL_FUNC int
mdbx_resume_threads_after_remap(mdbx_handle_array_t *array);
osal_resume_threads_after_remap(mdbx_handle_array_t *array);
#endif /* Windows */
MDBX_INTERNAL_FUNC int mdbx_msync(mdbx_mmap_t *map, size_t offset,
MDBX_INTERNAL_FUNC int osal_msync(osal_mmap_t *map, size_t offset,
size_t length,
enum mdbx_syncmode_bits mode_bits);
MDBX_INTERNAL_FUNC int mdbx_check_fs_rdonly(mdbx_filehandle_t handle,
enum osal_syncmode_bits mode_bits);
MDBX_INTERNAL_FUNC int osal_check_fs_rdonly(mdbx_filehandle_t handle,
const pathchar_t *pathname,
int err);
MDBX_MAYBE_UNUSED static __inline uint32_t mdbx_getpid(void) {
MDBX_MAYBE_UNUSED static __inline uint32_t osal_getpid(void) {
STATIC_ASSERT(sizeof(mdbx_pid_t) <= sizeof(uint32_t));
#if defined(_WIN32) || defined(_WIN64)
return GetCurrentProcessId();
@@ -421,7 +421,7 @@ MDBX_MAYBE_UNUSED static __inline uint32_t mdbx_getpid(void) {
#endif
}
MDBX_MAYBE_UNUSED static __inline uintptr_t mdbx_thread_self(void) {
MDBX_MAYBE_UNUSED static __inline uintptr_t osal_thread_self(void) {
mdbx_tid_t thunk;
STATIC_ASSERT(sizeof(uintptr_t) >= sizeof(thunk));
#if defined(_WIN32) || defined(_WIN64)
@@ -434,24 +434,23 @@ MDBX_MAYBE_UNUSED static __inline uintptr_t mdbx_thread_self(void) {
#if !defined(_WIN32) && !defined(_WIN64)
#if defined(__ANDROID_API__) || defined(ANDROID) || defined(BIONIC)
MDBX_INTERNAL_FUNC int mdbx_check_tid4bionic(void);
MDBX_INTERNAL_FUNC int osal_check_tid4bionic(void);
#else
static __inline int mdbx_check_tid4bionic(void) { return 0; }
static __inline int osal_check_tid4bionic(void) { return 0; }
#endif /* __ANDROID_API__ || ANDROID) || BIONIC */
MDBX_MAYBE_UNUSED static __inline int
mdbx_pthread_mutex_lock(pthread_mutex_t *mutex) {
int err = mdbx_check_tid4bionic();
osal_pthread_mutex_lock(pthread_mutex_t *mutex) {
int err = osal_check_tid4bionic();
return unlikely(err) ? err : pthread_mutex_lock(mutex);
}
#endif /* !Windows */
MDBX_INTERNAL_FUNC uint64_t mdbx_osal_monotime(void);
MDBX_INTERNAL_FUNC uint64_t
mdbx_osal_16dot16_to_monotime(uint32_t seconds_16dot16);
MDBX_INTERNAL_FUNC uint32_t mdbx_osal_monotime_to_16dot16(uint64_t monotime);
MDBX_INTERNAL_FUNC uint64_t osal_monotime(void);
MDBX_INTERNAL_FUNC uint64_t osal_16dot16_to_monotime(uint32_t seconds_16dot16);
MDBX_INTERNAL_FUNC uint32_t osal_monotime_to_16dot16(uint64_t monotime);
MDBX_INTERNAL_FUNC bin128_t mdbx_osal_bootid(void);
MDBX_INTERNAL_FUNC bin128_t osal_bootid(void);
/*----------------------------------------------------------------------------*/
/* lck stuff */
@@ -467,7 +466,7 @@ MDBX_INTERNAL_FUNC bin128_t mdbx_osal_bootid(void);
/// MUST NOT initialize shared synchronization objects in memory-mapped
/// LCK-file that are already in use.
/// \return Error code or zero on success.
MDBX_INTERNAL_FUNC int mdbx_lck_init(MDBX_env *env,
MDBX_INTERNAL_FUNC int osal_lck_init(MDBX_env *env,
MDBX_env *inprocess_neighbor,
int global_uniqueness_flag);
@@ -488,7 +487,7 @@ MDBX_INTERNAL_FUNC int mdbx_lck_init(MDBX_env *env,
/// of other instances of MDBX_env within the current process, e.g.
/// restore POSIX-fcntl locks after the closing of file descriptors.
/// \return Error code (MDBX_PANIC) or zero on success.
MDBX_INTERNAL_FUNC int mdbx_lck_destroy(MDBX_env *env,
MDBX_INTERNAL_FUNC int osal_lck_destroy(MDBX_env *env,
MDBX_env *inprocess_neighbor);
/// \brief Connects to shared interprocess locking objects and tries to acquire
@@ -496,14 +495,14 @@ MDBX_INTERNAL_FUNC int mdbx_lck_destroy(MDBX_env *env,
/// Depending on implementation or/and platform (Windows) this function may
/// acquire the non-OS super-level lock (e.g. for shared synchronization
/// objects initialization), which will be downgraded to OS-exclusive or
/// shared via explicit calling of mdbx_lck_downgrade().
/// shared via explicit calling of osal_lck_downgrade().
/// \return
/// MDBX_RESULT_TRUE (-1) - if an exclusive lock was acquired and thus
/// the current process is the first and only after the last use of DB.
/// MDBX_RESULT_FALSE (0) - if a shared lock was acquired and thus
/// DB has already been opened and now is used by other processes.
/// Otherwise (not 0 and not -1) - error code.
MDBX_INTERNAL_FUNC int mdbx_lck_seize(MDBX_env *env);
MDBX_INTERNAL_FUNC int osal_lck_seize(MDBX_env *env);
/// \brief Downgrades the level of initially acquired lock to
/// operational level specified by argument. The reson for such downgrade:
@@ -516,14 +515,14 @@ MDBX_INTERNAL_FUNC int mdbx_lck_seize(MDBX_env *env);
/// (env->me_flags & MDBX_EXCLUSIVE) != 0 - downgrade to exclusive
/// operational lock.
/// \return Error code or zero on success
MDBX_INTERNAL_FUNC int mdbx_lck_downgrade(MDBX_env *env);
MDBX_INTERNAL_FUNC int osal_lck_downgrade(MDBX_env *env);
/// \brief Locks LCK-file or/and table of readers for (de)registering.
/// \return Error code or zero on success
MDBX_INTERNAL_FUNC int mdbx_rdt_lock(MDBX_env *env);
MDBX_INTERNAL_FUNC int osal_rdt_lock(MDBX_env *env);
/// \brief Unlocks LCK-file or/and table of readers after (de)registering.
MDBX_INTERNAL_FUNC void mdbx_rdt_unlock(MDBX_env *env);
MDBX_INTERNAL_FUNC void osal_rdt_unlock(MDBX_env *env);
/// \brief Acquires lock for DB change (on writing transaction start)
/// Reading transactions will not be blocked.
@@ -538,15 +537,15 @@ LIBMDBX_API void mdbx_txn_unlock(MDBX_env *env);
/// \brief Sets alive-flag of reader presence (indicative lock) for PID of
/// the current process. The function does no more than needed for
/// the correct working of mdbx_rpid_check() in other processes.
/// the correct working of osal_rpid_check() in other processes.
/// \return Error code or zero on success
MDBX_INTERNAL_FUNC int mdbx_rpid_set(MDBX_env *env);
MDBX_INTERNAL_FUNC int osal_rpid_set(MDBX_env *env);
/// \brief Resets alive-flag of reader presence (indicative lock)
/// for PID of the current process. The function does no more than needed
/// for the correct working of mdbx_rpid_check() in other processes.
/// for the correct working of osal_rpid_check() in other processes.
/// \return Error code or zero on success
MDBX_INTERNAL_FUNC int mdbx_rpid_clear(MDBX_env *env);
MDBX_INTERNAL_FUNC int osal_rpid_clear(MDBX_env *env);
/// \brief Checks for reading process status with the given pid with help of
/// alive-flag of presence (indicative lock) or using another way.
@@ -556,28 +555,28 @@ MDBX_INTERNAL_FUNC int mdbx_rpid_clear(MDBX_env *env);
/// MDBX_RESULT_FALSE (0) - if the reader process with the given PID is absent
/// or not working with DB (indicative lock is not present).
/// Otherwise (not 0 and not -1) - error code.
MDBX_INTERNAL_FUNC int mdbx_rpid_check(MDBX_env *env, uint32_t pid);
MDBX_INTERNAL_FUNC int osal_rpid_check(MDBX_env *env, uint32_t pid);
#if defined(_WIN32) || defined(_WIN64)
#define MUSTDIE_MB2WIDE(FROM, TO) \
#define OSAL_MB2WIDE(FROM, TO) \
do { \
const char *const from_tmp = (FROM); \
const size_t from_mblen = strlen(from_tmp); \
const size_t to_wlen = mdbx_mb2w(nullptr, 0, from_tmp, from_mblen); \
const size_t to_wlen = osal_mb2w(nullptr, 0, from_tmp, from_mblen); \
if (to_wlen < 1 || to_wlen > /* MAX_PATH */ INT16_MAX) \
return ERROR_INVALID_NAME; \
wchar_t *const to_tmp = _alloca((to_wlen + 1) * sizeof(wchar_t)); \
if (to_wlen + 1 != \
mdbx_mb2w(to_tmp, to_wlen + 1, from_tmp, from_mblen + 1)) \
osal_mb2w(to_tmp, to_wlen + 1, from_tmp, from_mblen + 1)) \
return ERROR_INVALID_NAME; \
(TO) = to_tmp; \
} while (0)
typedef void(WINAPI *MDBX_srwlock_function)(MDBX_srwlock *);
MDBX_INTERNAL_VAR MDBX_srwlock_function mdbx_srwlock_Init,
mdbx_srwlock_AcquireShared, mdbx_srwlock_ReleaseShared,
mdbx_srwlock_AcquireExclusive, mdbx_srwlock_ReleaseExclusive;
typedef void(WINAPI *osal_srwlock_t_function)(osal_srwlock_t *);
MDBX_INTERNAL_VAR osal_srwlock_t_function osal_srwlock_Init,
osal_srwlock_AcquireShared, osal_srwlock_ReleaseShared,
osal_srwlock_AcquireExclusive, osal_srwlock_ReleaseExclusive;
#if _WIN32_WINNT < 0x0600 /* prior to Windows Vista */
typedef enum _FILE_INFO_BY_HANDLE_CLASS {