static void *
wmem_block_alloc(void *private_data, const size_t size)
{
wmem_block_allocator_t *allocator = (wmem_block_allocator_t*) private_data;
wmem_block_chunk_t *chunk;
if (size > WMEM_BLOCK_MAX_ALLOC_SIZE) {
return wmem_block_alloc_jumbo(allocator, size);
}
if (allocator->recycler_head &&
WMEM_CHUNK_DATA_LEN(allocator->recycler_head) >= size) {
/* If we can serve it from the recycler, do so. */
chunk = allocator->recycler_head;
}
else {
if (allocator->master_head &&
WMEM_CHUNK_DATA_LEN(allocator->master_head) < size) {
/* Recycle the head of the master list if necessary. */
chunk = allocator->master_head;
wmem_block_pop_master(allocator);
wmem_block_add_to_recycler(allocator, chunk);
}
if (!allocator->master_head) {
/* Allocate a new block if necessary. */
wmem_block_new_block(allocator);
}
chunk = allocator->master_head;
}
/* if our chunk is used, something is wrong */
g_assert(! chunk->used);
/* if we still don't have the space at this point, something is wrong */
g_assert(size <= WMEM_CHUNK_DATA_LEN(chunk));
/* Split our chunk into two to preserve any trailing free space */
wmem_block_split_free_chunk(allocator, chunk, size);
/* if our split reduced our size too much, something went wrong */
g_assert(size <= WMEM_CHUNK_DATA_LEN(chunk));
/* the resulting chunk should not be in either free list */
g_assert(chunk != allocator->master_head);
g_assert(chunk != allocator->recycler_head);
/* Now cycle the recycler */
wmem_block_cycle_recycler(allocator);
/* mark it as used */
chunk->used = TRUE;
/* and return the user's pointer */
return WMEM_CHUNK_TO_DATA(chunk);
}
static void *
wmem_block_alloc(void *private_data, const size_t size)
{
wmem_block_allocator_t *allocator = (wmem_block_allocator_t*) private_data;
wmem_block_chunk_t *chunk;
if (size > WMEM_BLOCK_MAX_ALLOC_SIZE) {
return wmem_block_alloc_jumbo(allocator, size);
}
if (allocator->recycler_head &&
WMEM_CHUNK_DATA_LEN(allocator->recycler_head) >= size) {
/* If we can serve it from the recycler, do so. */
chunk = allocator->recycler_head;
}
else {
if (allocator->master_head &&
WMEM_CHUNK_DATA_LEN(allocator->master_head) < size) {
/* Recycle the head of the master list if necessary. */
chunk = allocator->master_head;
wmem_block_pop_master(allocator);
wmem_block_add_to_recycler(allocator, chunk);
}
if (!allocator->master_head) {
/* Allocate a new block if necessary. */
wmem_block_new_block(allocator);
}
chunk = allocator->master_head;
}
/* Split our chunk into two to preserve any trailing free space */
wmem_block_split_free_chunk(allocator, chunk, size);
/* Now cycle the recycler */
wmem_block_cycle_recycler(allocator);
/* mark it as used */
chunk->used = TRUE;
/* and return the user's pointer */
return WMEM_CHUNK_TO_DATA(chunk);
}
