src/intel/vulkan/tests/state_pool_no_free.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 <pthread.h>
  27
  28 #include "anv_private.h"
  29
  30 #define NUM_THREADS 16
  31 #define STATES_PER_THREAD 1024
  32 #define NUM_RUNS 64
  33
  34 struct job {
  35    pthread_t thread;
  36    unsigned id;
  37    struct anv_state_pool *pool;
  38    uint32_t offsets[STATES_PER_THREAD];
  39 } jobs[NUM_THREADS];
  40
  41 pthread_barrier_t barrier;
  42
  43 static void *alloc_states(void *_job)
  44 {
  45    struct job *job = _job;
  46
  47    pthread_barrier_wait(&barrier);
  48
  49    for (unsigned i = 0; i < STATES_PER_THREAD; i++) {
  50       struct anv_state state = anv_state_pool_alloc(job->pool, 16, 16);
  51       job->offsets[i] = state.offset;
  52    }
  53
  54    return NULL;
  55 }
  56
  57 static void run_test()
  58 {
  59    struct anv_physical_device physical_device = { };
  60    struct anv_device device = {
  61       .physical = &physical_device,
  62    };
  63    struct anv_state_pool state_pool;
  64
  65    pthread_mutex_init(&device.mutex, NULL);
  66    anv_bo_cache_init(&device.bo_cache);
  67    anv_state_pool_init(&state_pool, &device, 4096, 0, 64);
  68
  69    pthread_barrier_init(&barrier, NULL, NUM_THREADS);
  70
  71    for (unsigned i = 0; i < NUM_THREADS; i++) {
  72       jobs[i].pool = &state_pool;
  73       jobs[i].id = i;
  74       pthread_create(&jobs[i].thread, NULL, alloc_states, &jobs[i]);
  75    }
  76
  77    for (unsigned i = 0; i < NUM_THREADS; i++)
  78       pthread_join(jobs[i].thread, NULL);
  79
  80    /* A list of indices, one per thread */
  81    unsigned next[NUM_THREADS];
  82    memset(next, 0, sizeof(next));
  83
  84    int highest = -1;
  85    while (true) {
  86       /* First, we find which thread has the highest next element */
  87       int thread_max = -1;
  88       int max_thread_idx = -1;
  89       for (unsigned i = 0; i < NUM_THREADS; i++) {
  90          if (next[i] >= STATES_PER_THREAD)
  91             continue;
  92
  93          if (thread_max < jobs[i].offsets[next[i]]) {
  94             thread_max = jobs[i].offsets[next[i]];
  95             max_thread_idx = i;
  96          }
  97       }
  98
  99       /* The only way this can happen is if all of the next[] values are at
 100        * BLOCKS_PER_THREAD, in which case, we're done.
 101        */
 102       if (thread_max == -1)
 103          break;
 104
 105       /* That next element had better be higher than the previous highest */
 106       assert(jobs[max_thread_idx].offsets[next[max_thread_idx]] > highest);
 107
 108       highest = jobs[max_thread_idx].offsets[next[max_thread_idx]];
 109       next[max_thread_idx]++;
 110    }
 111
 112    anv_state_pool_finish(&state_pool);
 113    pthread_mutex_destroy(&device.mutex);
 114 }
 115
 116 int main(int argc, char **argv)
 117 {
 118    for (unsigned i = 0; i < NUM_RUNS; i++)
 119       run_test();
 120 }