From c8bae7493d2f2910b57f13ded012e86bdcfb0532 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 16:47:53 +0200 Subject: Adding upstream version 1:2.39.2. Signed-off-by: Daniel Baumann --- mem-pool.h | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 mem-pool.h (limited to 'mem-pool.h') diff --git a/mem-pool.h b/mem-pool.h new file mode 100644 index 0000000..fe7507f --- /dev/null +++ b/mem-pool.h @@ -0,0 +1,63 @@ +#ifndef MEM_POOL_H +#define MEM_POOL_H + +struct mp_block { + struct mp_block *next_block; + char *next_free; + char *end; + uintmax_t space[FLEX_ARRAY]; /* more */ +}; + +struct mem_pool { + struct mp_block *mp_block; + + /* + * The amount of available memory to grow the pool by. + * This size does not include the overhead for the mp_block. + */ + size_t block_alloc; + + /* The total amount of memory allocated by the pool. */ + size_t pool_alloc; +}; + +/* + * Initialize mem_pool with specified initial size. + */ +void mem_pool_init(struct mem_pool *pool, size_t initial_size); + +/* + * Discard all the memory the memory pool is responsible for. + */ +void mem_pool_discard(struct mem_pool *pool, int invalidate_memory); + +/* + * Alloc memory from the mem_pool. + */ +void *mem_pool_alloc(struct mem_pool *pool, size_t len); + +/* + * Allocate and zero memory from the memory pool. + */ +void *mem_pool_calloc(struct mem_pool *pool, size_t count, size_t size); + +/* + * Allocate memory from the memory pool and copy str into it. + */ +char *mem_pool_strdup(struct mem_pool *pool, const char *str); +char *mem_pool_strndup(struct mem_pool *pool, const char *str, size_t len); + +/* + * Move the memory associated with the 'src' pool to the 'dst' pool. The 'src' + * pool will be empty and not contain any memory. It still needs to be free'd + * with a call to `mem_pool_discard`. + */ +void mem_pool_combine(struct mem_pool *dst, struct mem_pool *src); + +/* + * Check if a memory pointed at by 'mem' is part of the range of + * memory managed by the specified mem_pool. + */ +int mem_pool_contains(struct mem_pool *pool, void *mem); + +#endif -- cgit v1.2.3