/* * sync stress test: merging * Copyright 2015-2016 Collabora Ltd. * * Based on the implementation from the Android Open Source Project, * * Copyright 2012 Google, Inc * * 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 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.
*/
int test_merge_stress_random_merge(void)
{ int i, size, ret; int timeline_count = 32; int merge_count = 1024 * 32; int timelines[timeline_count]; int fence_map[timeline_count]; int fence, tmpfence, merged, valid; int timeline, timeline_offset, sync_point;
srand(time(NULL));
for (i = 0; i < timeline_count; i++)
timelines[i] = sw_sync_timeline_create();
/* * Randomly create sync_points out of a fixed set of timelines, * and merge them together
*/ for (i = 0; i < merge_count; i++) { /* Generate sync_point. */
timeline_offset = rand() % timeline_count;
timeline = timelines[timeline_offset];
sync_point = rand();
/* Keep track of the latest sync_point in each timeline. */ if (fence_map[timeline_offset] == -1)
fence_map[timeline_offset] = sync_point; elseif (fence_map[timeline_offset] < sync_point)
fence_map[timeline_offset] = sync_point;
size = 0; for (i = 0; i < timeline_count; i++) if (fence_map[i] != -1)
size++;
/* Confirm our map matches the fence. */
ASSERT(sync_fence_size(fence) == size, "Quantity of elements not matching\n");
/* Trigger the merged fence */ for (i = 0; i < timeline_count; i++) { if (fence_map[i] != -1) {
ret = sync_wait(fence, 0);
ASSERT(ret == 0, "Failure waiting on fence until timeout\n"); /* Increment the timeline to the last sync_point */
sw_sync_timeline_inc(timelines[i], fence_map[i]);
}
}
/* Check that the fence is triggered. */
ret = sync_wait(fence, 0);
ASSERT(ret > 0, "Failure triggering fence\n");
sw_sync_fence_destroy(fence);
for (i = 0; i < timeline_count; i++)
sw_sync_timeline_destroy(timelines[i]);
return 0;
}
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