ddf94cf108
Skia code prefers static over unnamed namespace. BUG=None TEST=None R=bsalomon@google.com, robertphillips@google.com Author: tfarina@chromium.org Review URL: https://codereview.chromium.org/26962002 git-svn-id: http://skia.googlecode.com/svn/trunk@11747 2bbb7eff-a529-9590-31e7-b0007b416f81
62 lines
1.2 KiB
C++
62 lines
1.2 KiB
C++
/*
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* Copyright 2013 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 "SkOnce.h"
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#include "SkThreadPool.h"
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#include "Test.h"
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#include "TestClassDef.h"
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DEF_SK_ONCE(add_five, int* x) {
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*x += 5;
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}
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DEF_TEST(SkOnce_Singlethreaded, r) {
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int x = 0;
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// No matter how many times we do this, x will be 5.
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SK_ONCE(add_five, &x);
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SK_ONCE(add_five, &x);
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SK_ONCE(add_five, &x);
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SK_ONCE(add_five, &x);
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SK_ONCE(add_five, &x);
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REPORTER_ASSERT(r, 5 == x);
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}
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DEF_SK_ONCE(add_six, int* x) {
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*x += 6;
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}
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class Racer : public SkRunnable {
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public:
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int* ptr;
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virtual void run() SK_OVERRIDE {
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SK_ONCE(add_six, ptr);
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}
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};
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DEF_TEST(SkOnce_Multithreaded, r) {
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const int kTasks = 16, kThreads = 4;
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// Make a bunch of tasks that will race to be the first to add six to x.
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Racer racers[kTasks];
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int x = 0;
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for (int i = 0; i < kTasks; i++) {
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racers[i].ptr = &x;
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}
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// Let them race.
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SkThreadPool pool(kThreads);
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for (int i = 0; i < kTasks; i++) {
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pool.add(&racers[i]);
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}
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pool.wait();
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// Only one should have done the +=.
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REPORTER_ASSERT(r, 6 == x);
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}
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