src/intel/vulkan/tests/block_pool_grow_first.c

   1 /*
   2  * Copyright © 2015 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #undef NDEBUG
  25
  26 #include "anv_private.h"
  27
  28 int main(int argc, char **argv)
  29 {
  30    struct anv_instance instance;
  31    struct anv_device device = {
  32       .instance = &instance,
  33    };
  34    struct anv_block_pool pool;
  35
  36    /* Create a pool with initial size smaller than the block allocated, so
  37     * that it must grow in the first allocation.
  38     */
  39    const uint32_t block_size = 16 * 1024;
  40    const uint32_t initial_size = block_size / 2;
  41
  42    anv_block_pool_init(&pool, &device, 4096, initial_size, EXEC_OBJECT_PINNED);
  43    assert(pool.size == initial_size);
  44
  45    uint32_t padding;
  46    int32_t offset = anv_block_pool_alloc(&pool, block_size, &padding);
  47
  48    /* Pool will have grown at least space to fit the new allocation. */
  49    assert(pool.size > initial_size);
  50    assert(pool.size >= initial_size + block_size);
  51
  52    /* The whole initial size is considered padding and the allocation should be
  53     * right next to it.
  54     */
  55    assert(padding == initial_size);
  56    assert(offset == initial_size);
  57
  58    /* Use the memory to ensure it is valid. */
  59    void *map = anv_block_pool_map(&pool, offset);
  60    memset(map, 22, block_size);
  61
  62    anv_block_pool_finish(&pool);
  63 }