ISAR/libmdbx
3
0
Fork 0
mirror of https://github.com/isar/libmdbx.git synced 2025-01-30 22:47:16 +08:00
Code Issues Packages Projects Releases Wiki Activity

mdbx++: добавление buffer::clear_and_reserve().

Browse Source
This commit is contained in:
Леонид Юрьев (Leonid Yuriev) 2024-03-30 23:30:06 +03:00
parent e9a49e3715
commit d4f7b4114b
1 changed files with 12 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
mdbx.h++
View File

@ -1907,7 +1907,6 @@ private:
const size_t old_capacity = bin_.capacity(); const size_t old_capacity = bin_.capacity();
const size_t new_capacity = const size_t new_capacity =
bin::advise_capacity(old_capacity, wanna_capacity); bin::advise_capacity(old_capacity, wanna_capacity);
assert(new_capacity >= wanna_capacity);
if (MDBX_LIKELY(new_capacity == old_capacity)) if (MDBX_LIKELY(new_capacity == old_capacity))
MDBX_CXX20_LIKELY { MDBX_CXX20_LIKELY {
assert(bin_.is_inplace() == assert(bin_.is_inplace() ==
@ -2073,7 +2072,13 @@ private:
return *this; return *this;
} }
MDBX_CXX20_CONSTEXPR void clear() { reshape<true>(0, 0, nullptr, 0); } MDBX_CXX20_CONSTEXPR void *clear() {
return reshape<true>(0, 0, nullptr, 0);
}
MDBX_CXX20_CONSTEXPR void *clear_and_reserve(size_t whole_capacity,
size_t headroom) {
return reshape<false>(whole_capacity, headroom, nullptr, 0);
}
MDBX_CXX20_CONSTEXPR void resize(size_t capacity, size_t headroom, MDBX_CXX20_CONSTEXPR void resize(size_t capacity, size_t headroom,
slice &content) { slice &content) {
content.iov_base = content.iov_base =
@ -2803,9 +2808,11 @@ public:
} }
/// \brief Clears the contents and storage. /// \brief Clears the contents and storage.
void clear() noexcept { void clear() noexcept { slice_.assign(silo_.clear(), size_t(0)); }
slice_.clear();
silo_.clear(); /// \brief Clears the contents and reserve storage.
void clear_and_reserve(size_t whole_capacity, size_t headroom = 0) noexcept {
slice_.assign(silo_.clear_and_reserve(whole_capacity, headroom), size_t(0));
} }
/// \brief Reduces memory usage by freeing unused storage space. /// \brief Reduces memory usage by freeing unused storage space.