linux-arkmicro/linux/tools/testing/selftests/sync/sync_fence.c

/*
 *  sync fence tests with one timeline
 *  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 "sync.h"
#include "sw_sync.h"
#include "synctest.h"

int test_fence_one_timeline_wait(void)
{
	int fence, valid, ret;
	int timeline = sw_sync_timeline_create();

	valid = sw_sync_timeline_is_valid(timeline);
	ASSERT(valid, "Failure allocating timeline\n");

	fence = sw_sync_fence_create(timeline, "allocFence", 5);
	valid = sw_sync_fence_is_valid(fence);
	ASSERT(valid, "Failure allocating fence\n");

	/* Wait on fence until timeout */
	ret = sync_wait(fence, 0);
	ASSERT(ret == 0, "Failure waiting on fence until timeout\n");

	/* Advance timeline from 0 -> 1 */
	ret = sw_sync_timeline_inc(timeline, 1);
	ASSERT(ret == 0, "Failure advancing timeline\n");

	/* Wait on fence until timeout */
	ret = sync_wait(fence, 0);
	ASSERT(ret == 0, "Failure waiting on fence until timeout\n");

	/* Signal the fence */
	ret = sw_sync_timeline_inc(timeline, 4);
	ASSERT(ret == 0, "Failure signaling the fence\n");

	/* Wait successfully */
	ret = sync_wait(fence, 0);
	ASSERT(ret > 0, "Failure waiting on fence\n");

	/* Go even further, and confirm wait still succeeds */
	ret = sw_sync_timeline_inc(timeline, 10);
	ASSERT(ret == 0, "Failure going further\n");
	ret = sync_wait(fence, 0);
	ASSERT(ret > 0, "Failure waiting ahead\n");

	sw_sync_fence_destroy(fence);
	sw_sync_timeline_destroy(timeline);

	return 0;
}

int test_fence_one_timeline_merge(void)
{
	int a, b, c, d, valid;
	int timeline = sw_sync_timeline_create();

	/* create fence a,b,c and then merge them all into fence d */
	a = sw_sync_fence_create(timeline, "allocFence", 1);
	b = sw_sync_fence_create(timeline, "allocFence", 2);
	c = sw_sync_fence_create(timeline, "allocFence", 3);

	valid = sw_sync_fence_is_valid(a) &&
		sw_sync_fence_is_valid(b) &&
		sw_sync_fence_is_valid(c);
	ASSERT(valid, "Failure allocating fences\n");

	d = sync_merge("mergeFence", b, a);
	d = sync_merge("mergeFence", c, d);
	valid = sw_sync_fence_is_valid(d);
	ASSERT(valid, "Failure merging fences\n");

	/* confirm all fences have one active point (even d) */
	ASSERT(sync_fence_count_with_status(a, FENCE_STATUS_ACTIVE) == 1,
	       "a has too many active fences!\n");
	ASSERT(sync_fence_count_with_status(a, FENCE_STATUS_ACTIVE) == 1,
	       "b has too many active fences!\n");
	ASSERT(sync_fence_count_with_status(a, FENCE_STATUS_ACTIVE) == 1,
	       "c has too many active fences!\n");
	ASSERT(sync_fence_count_with_status(a, FENCE_STATUS_ACTIVE) == 1,
	       "d has too many active fences!\n");

	/* confirm that d is not signaled until the max of a,b,c */
	sw_sync_timeline_inc(timeline, 1);
	ASSERT(sync_fence_count_with_status(a, FENCE_STATUS_SIGNALED) == 1,
	       "a did not signal!\n");
	ASSERT(sync_fence_count_with_status(d, FENCE_STATUS_ACTIVE) == 1,
	       "d signaled too early!\n");

	sw_sync_timeline_inc(timeline, 1);
	ASSERT(sync_fence_count_with_status(b, FENCE_STATUS_SIGNALED) == 1,
	       "b did not signal!\n");
	ASSERT(sync_fence_count_with_status(d, FENCE_STATUS_ACTIVE) == 1,
	       "d signaled too early!\n");

	sw_sync_timeline_inc(timeline, 1);
	ASSERT(sync_fence_count_with_status(c, FENCE_STATUS_SIGNALED) == 1,
	       "c did not signal!\n");
	ASSERT(sync_fence_count_with_status(d, FENCE_STATUS_ACTIVE) == 0 &&
	       sync_fence_count_with_status(d, FENCE_STATUS_SIGNALED) == 1,
	       "d did not signal!\n");

	sw_sync_fence_destroy(d);
	sw_sync_fence_destroy(c);
	sw_sync_fence_destroy(b);
	sw_sync_fence_destroy(a);
	sw_sync_timeline_destroy(timeline);
	return 0;
}