tools/testing/selftests/sync/sync_stress_merge.c

   1 /*
   2  *  sync stress test: merging
   3  *  Copyright 2015-2016 Collabora Ltd.
   4  *
   5  *  Based on the implementation from the Android Open Source Project,
   6  *
   7  *  Copyright 2012 Google, Inc
   8  *
   9  *  Permission is hereby granted, free of charge, to any person obtaining a
  10  *  copy of this software and associated documentation files (the "Software"),
  11  *  to deal in the Software without restriction, including without limitation
  12  *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13  *  and/or sell copies of the Software, and to permit persons to whom the
  14  *  Software is furnished to do so, subject to the following conditions:
  15  *
  16  *  The above copyright notice and this permission notice shall be included in
  17  *  all copies or substantial portions of the Software.
  18  *
  19  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  22  *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  23  *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  24  *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  25  *  OTHER DEALINGS IN THE SOFTWARE.
  26  */
  27
  28 #include <stdlib.h>
  29 #include <string.h>
  30 #include <time.h>
  31
  32 #include "sync.h"
  33 #include "sw_sync.h"
  34 #include "synctest.h"
  35
  36 int test_merge_stress_random_merge(void)
  37 {
  38         int i, size, ret;
  39         int timeline_count = 32;
  40         int merge_count = 1024 * 32;
  41         int timelines[timeline_count];
  42         int fence_map[timeline_count];
  43         int fence, tmpfence, merged, valid;
  44         int timeline, timeline_offset, sync_point;
  45
  46         srand(time(NULL));
  47
  48         for (i = 0; i < timeline_count; i++)
  49                 timelines[i] = sw_sync_timeline_create();
  50
  51         fence = sw_sync_fence_create(timelines[0], "fence", 0);
  52         valid = sw_sync_fence_is_valid(fence);
  53         ASSERT(valid, "Failure creating fence\n");
  54
  55         memset(fence_map, -1, sizeof(fence_map));
  56         fence_map[0] = 0;
  57
  58         /*
  59          * Randomly create sync_points out of a fixed set of timelines,
  60          * and merge them together
  61          */
  62         for (i = 0; i < merge_count; i++) {
  63                 /* Generate sync_point. */
  64                 timeline_offset = rand() % timeline_count;
  65                 timeline = timelines[timeline_offset];
  66                 sync_point = rand();
  67
  68                 /* Keep track of the latest sync_point in each timeline. */
  69                 if (fence_map[timeline_offset] == -1)
  70                         fence_map[timeline_offset] = sync_point;
  71                 else if (fence_map[timeline_offset] < sync_point)
  72                         fence_map[timeline_offset] = sync_point;
  73
  74                 /* Merge */
  75                 tmpfence = sw_sync_fence_create(timeline, "fence", sync_point);
  76                 merged = sync_merge("merge", tmpfence, fence);
  77                 sw_sync_fence_destroy(tmpfence);
  78                 sw_sync_fence_destroy(fence);
  79                 fence = merged;
  80
  81                 valid = sw_sync_fence_is_valid(merged);
  82                 ASSERT(valid, "Failure creating fence i\n");
  83         }
  84
  85         size = 0;
  86         for (i = 0; i < timeline_count; i++)
  87                 if (fence_map[i] != -1)
  88                         size++;
  89
  90         /* Confirm our map matches the fence. */
  91         ASSERT(sync_fence_size(fence) == size,
  92                "Quantity of elements not matching\n");
  93
  94         /* Trigger the merged fence */
  95         for (i = 0; i < timeline_count; i++) {
  96                 if (fence_map[i] != -1) {
  97                         ret = sync_wait(fence, 0);
  98                         ASSERT(ret == 0,
  99                                "Failure waiting on fence until timeout\n");
 100                         /* Increment the timeline to the last sync_point */
 101                         sw_sync_timeline_inc(timelines[i], fence_map[i]);
 102                 }
 103         }
 104
 105         /* Check that the fence is triggered. */
 106         ret = sync_wait(fence, 0);
 107         ASSERT(ret > 0, "Failure triggering fence\n");
 108
 109         sw_sync_fence_destroy(fence);
 110
 111         for (i = 0; i < timeline_count; i++)
 112                 sw_sync_timeline_destroy(timelines[i]);
 113
 114         return 0;
 115 }