GNU libmicrohttpd
0.9.72
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memory pool; mostly used for efficient (de)allocation for each connection and bounding memory use for each request More...
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Functions | |
void | MHD_init_mem_pools_ (void) |
struct MemoryPool * | MHD_pool_create (size_t max) |
void | MHD_pool_destroy (struct MemoryPool *pool) |
void * | MHD_pool_allocate (struct MemoryPool *pool, size_t size, bool from_end) |
void * | MHD_pool_reallocate (struct MemoryPool *pool, void *old, size_t old_size, size_t new_size) |
size_t | MHD_pool_get_free (struct MemoryPool *pool) |
void * | MHD_pool_reset (struct MemoryPool *pool, void *keep, size_t copy_bytes, size_t new_size) |
memory pool; mostly used for efficient (de)allocation for each connection and bounding memory use for each request
Definition in file memorypool.h.
void MHD_init_mem_pools_ | ( | void | ) |
Initialize values for memory pools
Initialise values for memory pools
Definition at line 85 of file memorypool.c.
References ALIGN_SIZE, mhd_assert, MHD_DEF_PAGE_SIZE_, and MHD_sys_page_size_.
Referenced by MHD_init().
void* MHD_pool_allocate | ( | struct MemoryPool * | pool, |
size_t | size, | ||
bool | from_end | ||
) |
Allocate size bytes from the pool.
pool | memory pool to use for the operation |
size | number of bytes to allocate |
from_end | allocate from end of pool (set to 'true'); use this for small, persistent allocations that will never be reallocated |
Definition at line 265 of file memorypool.c.
References mhd_assert, NULL, and ROUND_TO_ALIGN.
struct MemoryPool* MHD_pool_create | ( | size_t | max | ) |
Create a memory pool.
max | maximum size of the pool |
Definition at line 102 of file memorypool.c.
References ALIGN_SIZE, MAP_FAILED, mhd_assert, MHD_sys_page_size_, NULL, and ROUND_TO_ALIGN.
void MHD_pool_destroy | ( | struct MemoryPool * | pool | ) |
Destroy a memory pool.
pool | memory pool to destroy |
Definition at line 157 of file memorypool.c.
References mhd_assert, and NULL.
Referenced by internal_run_from_select(), MHD_connection_cleanup_(), and MHD_request_handle_idle_().
size_t MHD_pool_get_free | ( | struct MemoryPool * | pool | ) |
Check how much memory is left in the pool
pool | pool to check |
Definition at line 185 of file memorypool.c.
References mhd_assert.
Referenced by build_header_response().
void* MHD_pool_reallocate | ( | struct MemoryPool * | pool, |
void * | old, | ||
size_t | old_size, | ||
size_t | new_size | ||
) |
Reallocate a block of memory obtained from the pool. This is particularly efficient when growing or shrinking the block that was last (re)allocated. If the given block is not the most recently (re)allocated block, the memory of the previous allocation may be leaked until the pool is destroyed or reset.
pool | memory pool to use for the operation |
old | the existing block |
old_size | the size of the existing block |
new_size | the new size of the block |
Reallocate a block of memory obtained from the pool. This is particularly efficient when growing or shrinking the block that was last (re)allocated. If the given block is not the most recently (re)allocated block, the memory of the previous allocation may be leaked until the pool is destroyed (and copying the data maybe required).
pool | memory pool to use for the operation |
old | the existing block |
old_size | the size of the existing block |
new_size | the new size of the block |
Definition at line 248 of file memorypool.c.
References mhd_assert, NULL, and ROUND_TO_ALIGN.
Referenced by build_header_response(), check_write_done(), MHD_connection_handle_read(), MHD_request_handle_read_(), process_broken_line(), transmit_error_response(), and try_grow_read_buffer().
void* MHD_pool_reset | ( | struct MemoryPool * | pool, |
void * | keep, | ||
size_t | copy_bytes, | ||
size_t | new_size | ||
) |
Clear all entries from the memory pool except for keep of the given copy_bytes. The pointer returned should be a buffer of new_size where the first copy_bytes are from keep.
pool | memory pool to use for the operation |
keep | pointer to the entry to keep (maybe NULL) |
copy_bytes | how many bytes need to be kept at this address |
new_size | how many bytes should the allocation we return have? (should be larger or equal to copy_bytes) |
Clear all entries from the memory pool except for keep of the given size. The pointer returned should be a buffer of new_size where the first copy_bytes are from keep.
pool | memory pool to use for the operation |
keep | pointer to the entry to keep (maybe NULL) |
copy_bytes | how many bytes need to be kept at this address |
new_size | how many bytes should the allocation we return have? (should be larger or equal to copy_bytes) |
Size of area to zero-out
Definition at line 314 of file memorypool.c.
References mhd_assert, MHD_sys_page_size_, NULL, and ROUND_TO_ALIGN.
Referenced by MHD_request_handle_idle_().