89889b6939
SampleApp is multipicturedraw aware. BUG=skia: Review URL: https://codereview.chromium.org/684923002
82 lines
1.6 KiB
C++
82 lines
1.6 KiB
C++
/*
|
|
* Copyright 2013 Google Inc.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license that can be
|
|
* found in the LICENSE file.
|
|
*/
|
|
|
|
#include "SkOnce.h"
|
|
#include "SkRunnable.h"
|
|
#include "SkTaskGroup.h"
|
|
#include "Test.h"
|
|
|
|
static void add_five(int* x) {
|
|
*x += 5;
|
|
}
|
|
|
|
DEF_TEST(SkOnce_Singlethreaded, r) {
|
|
int x = 0;
|
|
|
|
SK_DECLARE_STATIC_ONCE(once);
|
|
// No matter how many times we do this, x will be 5.
|
|
SkOnce(&once, add_five, &x);
|
|
SkOnce(&once, add_five, &x);
|
|
SkOnce(&once, add_five, &x);
|
|
SkOnce(&once, add_five, &x);
|
|
SkOnce(&once, add_five, &x);
|
|
|
|
REPORTER_ASSERT(r, 5 == x);
|
|
}
|
|
|
|
static void add_six(int* x) {
|
|
*x += 6;
|
|
}
|
|
|
|
namespace {
|
|
|
|
class Racer : public SkRunnable {
|
|
public:
|
|
SkOnceFlag* once;
|
|
int* ptr;
|
|
|
|
virtual void run() SK_OVERRIDE {
|
|
SkOnce(once, add_six, ptr);
|
|
}
|
|
};
|
|
|
|
} // namespace
|
|
|
|
DEF_TEST(SkOnce_Multithreaded, r) {
|
|
const int kTasks = 16;
|
|
|
|
// Make a bunch of tasks that will race to be the first to add six to x.
|
|
Racer racers[kTasks];
|
|
SK_DECLARE_STATIC_ONCE(once);
|
|
int x = 0;
|
|
for (int i = 0; i < kTasks; i++) {
|
|
racers[i].once = &once;
|
|
racers[i].ptr = &x;
|
|
}
|
|
|
|
// Let them race.
|
|
SkTaskGroup tg;
|
|
for (int i = 0; i < kTasks; i++) {
|
|
tg.add(&racers[i]);
|
|
}
|
|
tg.wait();
|
|
|
|
// Only one should have done the +=.
|
|
REPORTER_ASSERT(r, 6 == x);
|
|
}
|
|
|
|
static int gX = 0;
|
|
static void inc_gX() { gX++; }
|
|
|
|
DEF_TEST(SkOnce_NoArg, r) {
|
|
SK_DECLARE_STATIC_ONCE(once);
|
|
SkOnce(&once, inc_gX);
|
|
SkOnce(&once, inc_gX);
|
|
SkOnce(&once, inc_gX);
|
|
REPORTER_ASSERT(r, 1 == gX);
|
|
}
|