selftest: sync: stress consumer/producer test (c52dee50) · Commits · e / devices / android_kernel_xiaomi_nabu

tools/testing/selftests/sync/Makefile

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		@@ -15,6 +15,7 @@ TESTS += sync_fence.o
		TESTS += sync_merge.o
		TESTS += sync_wait.o
		TESTS += sync_stress_parallelism.o
		TESTS += sync_stress_consumer.o

		sync_test: $(OBJS) $(TESTS)

tools/testing/selftests/sync/sync_stress_consumer.c

0 → 100644

+185 −0

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		/*
		* sync stress test: producer/consumer
		* 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 <pthread.h>

		#include "sync.h"
		#include "sw_sync.h"
		#include "synctest.h"

		/* 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.
		*/

		/* Returns 1 on error, 0 on success */
		static int busy_wait_on_fence(int fence)
		{
		int error, active;

		do {
		error = sync_fence_count_with_status(fence, FENCE_STATUS_ERROR);
		ASSERT(error == 0, "Error occurred on fence\n");
		active = sync_fence_count_with_status(fence,
		FENCE_STATUS_ACTIVE);
		} while (active);

		return 0;
		}

		static struct {
		int iterations;
		int threads;
		int counter;
		int consumer_timeline;
		int *producer_timelines;
		pthread_mutex_t lock;
		} test_data_mpsc;

		static int mpsc_producer_thread(void *d)
		{
		int id = (long)d;
		int fence, valid, i;
		int *producer_timelines = test_data_mpsc.producer_timelines;
		int consumer_timeline = test_data_mpsc.consumer_timeline;
		int iterations = test_data_mpsc.iterations;

		for (i = 0; i < iterations; i++) {
		fence = sw_sync_fence_create(consumer_timeline, "fence", i);
		valid = sw_sync_fence_is_valid(fence);
		ASSERT(valid, "Failure creating fence\n");

		/*
		* Wait for the consumer to finish. Use alternate
		* means of waiting on the fence
		*/

		if ((iterations + id) % 8 != 0) {
		ASSERT(sync_wait(fence, -1) > 0,
		"Failure waiting on fence\n");
		} else {
		ASSERT(busy_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_data_mpsc.lock);
		test_data_mpsc.counter++;
		pthread_mutex_unlock(&test_data_mpsc.lock);

		ASSERT(sw_sync_timeline_inc(producer_timelines[id], 1) == 0,
		"Error advancing producer timeline\n");

		sw_sync_fence_destroy(fence);
		}

		return 0;
		}

		static int mpcs_consumer_thread(void)
		{
		int fence, merged, tmp, valid, it, i;
		int *producer_timelines = test_data_mpsc.producer_timelines;
		int consumer_timeline = test_data_mpsc.consumer_timeline;
		int iterations = test_data_mpsc.iterations;
		int n = test_data_mpsc.threads;

		for (it = 1; it <= iterations; it++) {
		fence = sw_sync_fence_create(producer_timelines[0], "name", it);
		for (i = 1; i < n; i++) {
		tmp = sw_sync_fence_create(producer_timelines[i],
		"name", it);
		merged = sync_merge("name", tmp, fence);
		sw_sync_fence_destroy(tmp);
		sw_sync_fence_destroy(fence);
		fence = merged;
		}

		valid = sw_sync_fence_is_valid(fence);
		ASSERT(valid, "Failure merging fences\n");

		/*
		* Make sure we see an increment from every producer thread.
		* Vary the means by which we wait.
		*/
		if (iterations % 8 != 0) {
		ASSERT(sync_wait(fence, -1) > 0,
		"Producers did not increment as expected\n");
		} else {
		ASSERT(busy_wait_on_fence(fence) == 0,
		"Producers did not increment as expected\n");
		}

		ASSERT(test_data_mpsc.counter == n * it,
		"Counter value mismatch!\n");

		/* Release the producer threads */
		ASSERT(sw_sync_timeline_inc(consumer_timeline, 1) == 0,
		"Failure releasing producer threads\n");

		sw_sync_fence_destroy(fence);
		}

		return 0;
		}

		int test_consumer_stress_multi_producer_single_consumer(void)
		{
		int iterations = 1 << 12;
		int n = 5;
		long i, ret;
		int producer_timelines[n];
		int consumer_timeline;
		pthread_t threads[n];

		consumer_timeline = sw_sync_timeline_create();
		for (i = 0; i < n; i++)
		producer_timelines[i] = sw_sync_timeline_create();

		test_data_mpsc.producer_timelines = producer_timelines;
		test_data_mpsc.consumer_timeline = consumer_timeline;
		test_data_mpsc.iterations = iterations;
		test_data_mpsc.threads = n;
		test_data_mpsc.counter = 0;
		pthread_mutex_init(&test_data_mpsc.lock, NULL);

		for (i = 0; i < n; i++) {
		pthread_create(&threads[i], NULL, (void * ()(void ))
		mpsc_producer_thread, (void *)i);
		}

		/* Consumer thread runs here */
		ret = mpcs_consumer_thread();

		for (i = 0; i < n; i++)
		pthread_join(threads[i], NULL);

		return ret;
		}

tools/testing/selftests/sync/sync_test.c

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		@@ -67,6 +67,7 @@ int main(void)
		err += RUN_TEST(test_fence_merge_same_fence);
		err += RUN_TEST(test_fence_multi_timeline_wait);
		err += RUN_TEST(test_stress_two_threads_shared_timeline);
		err += RUN_TEST(test_consumer_stress_multi_producer_single_consumer);

		if (err)
		printf("[FAIL]\tsync errors: %d\n", err);

tools/testing/selftests/sync/synctest.h

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Original line number	Diff line number	Diff line
		@@ -57,4 +57,7 @@ int test_fence_multi_timeline_wait(void);
		/* Stress test - parallelism */
		int test_stress_two_threads_shared_timeline(void);

		/* Stress test - consumer */
		int test_consumer_stress_multi_producer_single_consumer(void);

		#endif