cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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sync_wait.c (3442B)


      1/*
      2 *  sync fence wait tests
      3 *  Copyright 2015-2016 Collabora Ltd.
      4 *
      5 *  Based on the implementation from the Android Open Source Project,
      6 *
      7 *  Copyright 2012 Google, Inc
      8 *
      9 *  Permission is hereby granted, free of charge, to any person obtaining a
     10 *  copy of this software and associated documentation files (the "Software"),
     11 *  to deal in the Software without restriction, including without limitation
     12 *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
     13 *  and/or sell copies of the Software, and to permit persons to whom the
     14 *  Software is furnished to do so, subject to the following conditions:
     15 *
     16 *  The above copyright notice and this permission notice shall be included in
     17 *  all copies or substantial portions of the Software.
     18 *
     19 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     20 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     21 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
     22 *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
     23 *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     24 *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     25 *  OTHER DEALINGS IN THE SOFTWARE.
     26 */
     27
     28#include "sync.h"
     29#include "sw_sync.h"
     30#include "synctest.h"
     31
     32int test_fence_multi_timeline_wait(void)
     33{
     34	int timelineA, timelineB, timelineC;
     35	int fenceA, fenceB, fenceC, merged;
     36	int valid, active, signaled, ret;
     37
     38	timelineA = sw_sync_timeline_create();
     39	timelineB = sw_sync_timeline_create();
     40	timelineC = sw_sync_timeline_create();
     41
     42	fenceA = sw_sync_fence_create(timelineA, "fenceA", 5);
     43	fenceB = sw_sync_fence_create(timelineB, "fenceB", 5);
     44	fenceC = sw_sync_fence_create(timelineC, "fenceC", 5);
     45
     46	merged = sync_merge("mergeFence", fenceB, fenceA);
     47	merged = sync_merge("mergeFence", fenceC, merged);
     48
     49	valid = sw_sync_fence_is_valid(merged);
     50	ASSERT(valid, "Failure merging fence from various timelines\n");
     51
     52	/* Confirm fence isn't signaled */
     53	active = sync_fence_count_with_status(merged, FENCE_STATUS_ACTIVE);
     54	ASSERT(active == 3, "Fence signaled too early!\n");
     55
     56	ret = sync_wait(merged, 0);
     57	ASSERT(ret == 0,
     58	       "Failure waiting on fence until timeout\n");
     59
     60	ret = sw_sync_timeline_inc(timelineA, 5);
     61	active = sync_fence_count_with_status(merged, FENCE_STATUS_ACTIVE);
     62	signaled = sync_fence_count_with_status(merged, FENCE_STATUS_SIGNALED);
     63	ASSERT(active == 2 && signaled == 1,
     64	       "Fence did not signal properly!\n");
     65
     66	ret = sw_sync_timeline_inc(timelineB, 5);
     67	active = sync_fence_count_with_status(merged, FENCE_STATUS_ACTIVE);
     68	signaled = sync_fence_count_with_status(merged, FENCE_STATUS_SIGNALED);
     69	ASSERT(active == 1 && signaled == 2,
     70	       "Fence did not signal properly!\n");
     71
     72	ret = sw_sync_timeline_inc(timelineC, 5);
     73	active = sync_fence_count_with_status(merged, FENCE_STATUS_ACTIVE);
     74	signaled = sync_fence_count_with_status(merged, FENCE_STATUS_SIGNALED);
     75	ASSERT(active == 0 && signaled == 3,
     76	       "Fence did not signal properly!\n");
     77
     78	/* confirm you can successfully wait */
     79	ret = sync_wait(merged, 100);
     80	ASSERT(ret > 0, "Failure waiting on signaled fence\n");
     81
     82	sw_sync_fence_destroy(merged);
     83	sw_sync_fence_destroy(fenceC);
     84	sw_sync_fence_destroy(fenceB);
     85	sw_sync_fence_destroy(fenceA);
     86	sw_sync_timeline_destroy(timelineC);
     87	sw_sync_timeline_destroy(timelineB);
     88	sw_sync_timeline_destroy(timelineA);
     89
     90	return 0;
     91}