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/*
* 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.
*/
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "sync.h"
#include "sw_sync.h"
#include "synctest.h"
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();
fence = sw_sync_fence_create(timelines[0], "fence", 0);
valid = sw_sync_fence_is_valid(fence);
ASSERT(valid, "Failure creating fence\n");
memset(fence_map, -1, sizeof(fence_map));
fence_map[0] = 0;
/*
* 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;
else if (fence_map[timeline_offset] < sync_point)
fence_map[timeline_offset] = sync_point;
/* Merge */
tmpfence = sw_sync_fence_create(timeline, "fence", sync_point);
merged = sync_merge("merge", tmpfence, fence);
sw_sync_fence_destroy(tmpfence);
sw_sync_fence_destroy(fence);
fence = merged;
valid = sw_sync_fence_is_valid(merged);
ASSERT(valid, "Failure creating fence i\n");
}
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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