diff options
Diffstat (limited to 'tests/sw_sync.c')
| -rw-r--r-- | tests/sw_sync.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/tests/sw_sync.c b/tests/sw_sync.c index d3ae4b5c..f4d1f139 100644 --- a/tests/sw_sync.c +++ b/tests/sw_sync.c @@ -457,6 +457,142 @@ static void test_sync_multi_consumer_producer(void) igt_assert_f(thread_ret == 0, "A sync thread reported failure.\n"); } +static int test_mspc_wait_on_fence(int fence) +{ + int error, active; + + do { + error = sync_fence_count_status(fence, + SW_SYNC_FENCE_STATUS_ERROR); + igt_assert_f(error == 0, "Error occurred on fence\n"); + active = sync_fence_count_status(fence, + SW_SYNC_FENCE_STATUS_ACTIVE); + } while (active); + + return 0; +} + +static struct { + int iterations; + int threads; + int counter; + int cons_timeline; + int *prod_timeline; + pthread_mutex_t lock; +} test_mpsc_data; + +static int mpsc_producer_thread(void *d) +{ + int id = (long)d; + int fence, i; + int *prod_timeline = test_mpsc_data.prod_timeline; + int cons_timeline = test_mpsc_data.cons_timeline; + int iterations = test_mpsc_data.iterations; + + for (i = 0; i < iterations; i++) { + fence = sw_sync_fence_create(cons_timeline, i); + + /* Wait for the consumer to finish. Use alternate + * means of waiting on the fence + */ + if ((iterations + id) % 8 != 0) { + igt_assert_f(sync_wait(fence, -1) == 0, + "Failure waiting on fence\n"); + } else { + igt_assert_f(test_mspc_wait_on_fence(fence) == 0, + "Failure waiting on fence\n"); + } + + /* Every producer increments the counter, the consumer + * checks and erases it + */ + pthread_mutex_lock(&test_mpsc_data.lock); + test_mpsc_data.counter++; + pthread_mutex_unlock(&test_mpsc_data.lock); + + sw_sync_timeline_inc(prod_timeline[id], 1); + close(fence); + } + + return 0; +} + +static int mpsc_consumer_thread(void) +{ + int fence, merged, tmp, it, i; + int *prod_timeline = test_mpsc_data.prod_timeline; + int cons_timeline = test_mpsc_data.cons_timeline; + int iterations = test_mpsc_data.iterations; + int n = test_mpsc_data.threads; + + for (it = 1; it <= iterations; it++) { + fence = sw_sync_fence_create(prod_timeline[0], it); + for (i = 1; i < n; i++) { + tmp = sw_sync_fence_create(prod_timeline[i], it); + merged = sync_merge(tmp, fence); + close(tmp); + close(fence); + fence = merged; + } + + /* Make sure we see an increment from every producer thread. + * Vary the means by which we wait. + */ + if (iterations % 8 != 0) { + igt_assert_f(sync_wait(fence, -1) == 0, + "Producers did not increment as expected\n"); + } else { + igt_assert_f(test_mspc_wait_on_fence(fence) == 0, + "Failure waiting on fence\n"); + } + + igt_assert_f(test_mpsc_data.counter == n * it, + "Counter value mismatch\n"); + + /* Release the producer threads */ + sw_sync_timeline_inc(cons_timeline, 1); + close(fence); + } + + return 0; +} + +/* IMPORTANT NOTE: if you see this test failing on your system, it may be + * due to a shortage of file descriptors. Please ensure your system has + * a sensible limit for this test to finish correctly. + */ +static void test_sync_multi_producer_single_consumer(void) +{ + int iterations = 1 << 12; + int n = 5; + int prod_timeline[n]; + int cons_timeline; + pthread_t threads[n]; + long i; + + cons_timeline = sw_sync_timeline_create(); + for (i = 0; i < n; i++) + prod_timeline[i] = sw_sync_timeline_create(); + + test_mpsc_data.prod_timeline = prod_timeline; + test_mpsc_data.cons_timeline = cons_timeline; + test_mpsc_data.iterations = iterations; + test_mpsc_data.threads = n; + test_mpsc_data.counter = 0; + pthread_mutex_init(&test_mpsc_data.lock, NULL); + + for (i = 0; i < n; i++) { + pthread_create(&threads[i], NULL, (void * (*)(void *)) + mpsc_producer_thread, + (void *)i); + } + + mpsc_consumer_thread(); + + for (i = 0; i < n; i++) + pthread_join(threads[i], NULL); +} + static void test_sync_random_merge(void) { int i, size, ret; @@ -559,6 +695,9 @@ igt_main igt_subtest("sync_multi_consumer_producer") test_sync_multi_consumer_producer(); + igt_subtest("sync_multi_producer_single_consumer") + test_sync_multi_producer_single_consumer(); + igt_subtest("sync_random_merge") test_sync_random_merge(); } |