blob: 1f57f98b93352a7a89844c5207de962703930917 [file] [log] [blame]
/*
* 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 "include/private/base/SkOnce.h"
#include "src/core/SkTaskGroup.h"
#include "tests/Test.h"
#include <functional>
static void add_five(int* x) {
*x += 5;
}
DEF_TEST(SkOnce_Singlethreaded, r) {
int x = 0;
// No matter how many times we do this, x will be 5.
SkOnce once;
once(add_five, &x);
once(add_five, &x);
once(add_five, &x);
once(add_five, &x);
once(add_five, &x);
REPORTER_ASSERT(r, 5 == x);
}
DEF_TEST(SkOnce_Multithreaded, r) {
int x = 0;
// Run a bunch of tasks to be the first to add six to x.
SkOnce once;
SkTaskGroup().batch(1021, [&](int) {
once([&] { x += 6; });
});
// 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) {
SkOnce once;
once(inc_gX);
once(inc_gX);
once(inc_gX);
REPORTER_ASSERT(r, 1 == gX);
}