55 lines
1.4 KiB
C++
55 lines
1.4 KiB
C++
/*
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* Copyright 2015 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "SkSharedMutex.h"
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#include "SkTaskGroup.h"
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#include "Test.h"
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DEF_TEST(SkSharedMutexBasic, r) {
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SkSharedMutex sm;
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sm.acquire();
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sm.assertHeld();
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sm.release();
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sm.acquireShared();
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sm.assertHeldShared();
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sm.releaseShared();
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}
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DEF_TEST(SkSharedMutexMultiThreaded, r) {
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SkSharedMutex sm;
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static const int kSharedSize = 10;
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int shared[kSharedSize];
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int value = 0;
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for (int i = 0; i < kSharedSize; ++i) {
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shared[i] = 0;
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}
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sk_parallel_for(8, [&](int threadIndex) {
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if (threadIndex % 4 != 0) {
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for (int c = 0; c < 100000; ++c) {
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sm.acquireShared();
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sm.assertHeldShared();
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int v = shared[0];
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for (int i = 1; i < kSharedSize; ++i) {
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REPORTER_ASSERT(r, v == shared[i]);
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}
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sm.releaseShared();
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}
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} else {
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for (int c = 0; c < 100000; ++c) {
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sm.acquire();
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sm.assertHeld();
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value += 1;
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for (int i = 0; i < kSharedSize; ++i) {
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shared[i] = value;
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}
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sm.release();
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}
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}
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});
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}
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