/* * sync stress test: parallelism * 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.
*/
staticstruct { int iterations; int timeline; int counter;
} test_data_two_threads;
staticint test_stress_two_threads_shared_timeline_thread(void *d)
{ int thread_id = (long)d; int timeline = test_data_two_threads.timeline; int iterations = test_data_two_threads.iterations; int fence, valid, ret, i;
for (i = 0; i < iterations; i++) {
fence = sw_sync_fence_create(timeline, "fence",
i * 2 + thread_id);
valid = sw_sync_fence_is_valid(fence);
ASSERT(valid, "Failure allocating fence\n");
/* Wait on the prior thread to complete */
ret = sync_wait(fence, -1);
ASSERT(ret > 0, "Problem occurred on prior thread\n");
/* * Confirm the previous thread's writes are visible * and then increment
*/
ASSERT(test_data_two_threads.counter == i * 2 + thread_id, "Counter got damaged!\n");
test_data_two_threads.counter++;
/* Kick off the other thread */
ret = sw_sync_timeline_inc(timeline, 1);
ASSERT(ret == 0, "Advancing timeline failed\n");
sw_sync_fence_destroy(fence);
}
return 0;
}
int test_stress_two_threads_shared_timeline(void)
{
pthread_t a, b; int valid; int timeline = sw_sync_timeline_create();
/* make sure the threads did not trample on one another */
ASSERT(test_data_two_threads.counter ==
test_data_two_threads.iterations * 2, "Counter has unexpected value\n");
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