src/intel/vulkan/tests/block_pool_grow_first.c

/*
 * Copyright © 2015 Intel Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */

#undef NDEBUG

#include "anv_private.h"

int main(int argc, char **argv)
{
   struct anv_instance instance;
   struct anv_device device = {
      .instance = &instance,
   };
   struct anv_block_pool pool;

   /* Create a pool with initial size smaller than the block allocated, so
    * that it must grow in the first allocation.
    */
   const uint32_t block_size = 16 * 1024;
   const uint32_t initial_size = block_size / 2;

   anv_block_pool_init(&pool, &device, 4096, initial_size, EXEC_OBJECT_PINNED);
   assert(pool.size == initial_size);

   uint32_t padding;
   int32_t offset = anv_block_pool_alloc(&pool, block_size, &padding);

   /* Pool will have grown at least space to fit the new allocation. */
   assert(pool.size > initial_size);
   assert(pool.size >= initial_size + block_size);

   /* The whole initial size is considered padding and the allocation should be
    * right next to it.
    */
   assert(padding == initial_size);
   assert(offset == initial_size);

   /* Use the memory to ensure it is valid. */
   void *map = anv_block_pool_map(&pool, offset);
   memset(map, 22, block_size);

   anv_block_pool_finish(&pool);
}