C++ (Cpp) wmem_block_fast_new_block Examples

Example #1

File: wmem_allocator_block_fast.c Project: dot-Sean/wireshark-http2

static void *
wmem_block_fast_alloc(void *private_data, const size_t size)
{
    wmem_block_fast_allocator_t *allocator = (wmem_block_fast_allocator_t*) private_data;
    wmem_block_fast_chunk_t     *chunk;
    gint32 real_size;

    g_assert(size <= WMEM_BLOCK_MAX_ALLOC_SIZE);

    real_size = (gint32)(WMEM_ALIGN_SIZE(size) + WMEM_CHUNK_HEADER_SIZE);

    /* Allocate a new block if necessary. */
    if (!allocator->block_list ||
            (WMEM_BLOCK_SIZE - allocator->block_list->pos) < real_size) {
        wmem_block_fast_new_block(allocator);
    }

    chunk = (wmem_block_fast_chunk_t *) ((guint8 *) allocator->block_list + allocator->block_list->pos);
    /* safe to cast, size smaller than WMEM_BLOCK_MAX_ALLOC_SIZE */
    chunk->len = (guint32) size;

    allocator->block_list->pos += real_size;

    /* and return the user's pointer */
    return WMEM_CHUNK_TO_DATA(chunk);
}

Example #2

File: wmem_allocator_block_fast.c Project: HeartFlying/wireshark

static void *
wmem_block_fast_alloc(void *private_data, const size_t size)
{
    wmem_block_fast_allocator_t *allocator = (wmem_block_fast_allocator_t*) private_data;
    wmem_block_fast_chunk_t     *chunk;
    gint32 real_size;

    if (size > WMEM_BLOCK_MAX_ALLOC_SIZE) {
        wmem_block_fast_jumbo_t *block;

        /* allocate/initialize a new block of the necessary size */
        block = (wmem_block_fast_jumbo_t *)wmem_alloc(NULL,
                size + WMEM_JUMBO_HEADER_SIZE + WMEM_CHUNK_HEADER_SIZE);

        block->next = allocator->jumbo_list;
        block->prev = NULL;
        allocator->jumbo_list = block;

        chunk = ((wmem_block_fast_chunk_t*)((guint8*)(block) + WMEM_JUMBO_HEADER_SIZE));
        chunk->len = JUMBO_MAGIC;

        return WMEM_CHUNK_TO_DATA(chunk);
    }

    real_size = (gint32)(WMEM_ALIGN_SIZE(size) + WMEM_CHUNK_HEADER_SIZE);

    /* Allocate a new block if necessary. */
    if (!allocator->block_list ||
            (WMEM_BLOCK_SIZE - allocator->block_list->pos) < real_size) {
        wmem_block_fast_new_block(allocator);
    }

    chunk = (wmem_block_fast_chunk_t *) ((guint8 *) allocator->block_list + allocator->block_list->pos);
    /* safe to cast, size smaller than WMEM_BLOCK_MAX_ALLOC_SIZE */
    chunk->len = (guint32) size;

    allocator->block_list->pos += real_size;

    /* and return the user's pointer */
    return WMEM_CHUNK_TO_DATA(chunk);
}