src/intel/vulkan/tests/state_pool_padding.c

   1 /*
   2  * Copyright © 2018 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_state_pool state_pool;
  35
  36    anv_state_pool_init(&state_pool, &device, 4096, 4096, EXEC_OBJECT_PINNED);
  37
  38    /* Get the size of the underlying block_pool */
  39    struct anv_block_pool *bp = &state_pool.block_pool;
  40    uint64_t pool_size = bp->size;
  41
  42    /* Grab one so the pool has some initial usage */
  43    anv_state_pool_alloc(&state_pool, 16, 16);
  44
  45    /* Grab a state that is the size of the initial allocation */
  46    struct anv_state state = anv_state_pool_alloc(&state_pool, pool_size, 16);
  47
  48    /* The pool must have grown */
  49    assert(bp->size > pool_size);
  50
  51    /* And the state must have been allocated at the end of the original size  */
  52    assert(state.offset == pool_size);
  53
  54    /* A new allocation that fits into the returned empty space should have an
  55     * offset within the original pool size
  56     */
  57    state = anv_state_pool_alloc(&state_pool, 4096, 16);
  58    assert(state.offset + state.alloc_size <= pool_size);
  59
  60    /* We should be able to allocate pool->block_size'd chunks in the returned area
  61     */
  62    int left_chunks = pool_size / 4096 - 2;
  63    for (int i = 0; i < left_chunks; i++) {
  64       state = anv_state_pool_alloc(&state_pool, 4096, 16);
  65       assert(state.offset + state.alloc_size <= pool_size);
  66    }
  67
  68    /* Now the next chunk to be allocated should make the pool grow again */
  69    pool_size = bp->size;
  70    state = anv_state_pool_alloc(&state_pool, 4096, 16);
  71    assert(bp->size > pool_size);
  72    assert(state.offset == pool_size);
  73
  74    anv_state_pool_finish(&state_pool);
  75 }