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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "gpu/command_buffer/service/retaining_one_shot_timer_holder.h"
#include "base/check.h"
#include "base/task/thread_pool.h"
#include "base/test/bind.h"
#include "base/test/task_environment.h"
#include "base/time/time.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace gpu {
class RetainingOneShotTimerHolderTest : public testing::Test {
protected:
RetainingOneShotTimerHolderTest()
: task_environment_(base::test::TaskEnvironment::TimeSource::MOCK_TIME) {}
base::RepeatingClosure CreateTimerCallback() {
return base::BindLambdaForTesting([this]() {
CHECK(task_environment_.GetMainThreadTaskRunner()
->BelongsToCurrentThread());
timer_fired_count_++;
});
}
void PostToThreadPoolAndWait(base::OnceClosure task) {
base::RunLoop run_loop;
base::ThreadPool::PostTaskAndReply(FROM_HERE, std::move(task),
run_loop.QuitClosure());
run_loop.Run();
}
int timer_fired_count_ = 0;
base::test::TaskEnvironment task_environment_;
};
TEST_F(RetainingOneShotTimerHolderTest, SameThreadUsage) {
scoped_refptr<RetainingOneShotTimerHolder> timer(
new RetainingOneShotTimerHolder(
/*max_delay=*/base::Milliseconds(100),
/*min_delay=*/base::Milliseconds(50),
task_environment_.GetMainThreadTaskRunner(), CreateTimerCallback()));
timer->ResetTimerIfNecessary();
task_environment_.FastForwardBy(base::Milliseconds(101));
EXPECT_EQ(timer_fired_count_, 1);
timer->ResetTimerIfNecessary();
task_environment_.FastForwardBy(base::Milliseconds(20));
// The timer should not reset given that the remaining time to fire is greater
// than the min delay to reset.
timer->ResetTimerIfNecessary();
task_environment_.FastForwardBy(base::Milliseconds(81));
EXPECT_EQ(timer_fired_count_, 2);
timer->ResetTimerIfNecessary();
task_environment_.FastForwardBy(base::Milliseconds(51));
// The timer should reset because the remaining time to fire is less than the
// min delay to reset.
timer->ResetTimerIfNecessary();
task_environment_.FastForwardBy(base::Milliseconds(50));
// Verify that the timer hasn't been fired again.
EXPECT_EQ(timer_fired_count_, 2);
task_environment_.FastForwardBy(base::Milliseconds(51));
EXPECT_EQ(timer_fired_count_, 3);
timer->DestroyTimer();
}
TEST_F(RetainingOneShotTimerHolderTest, MultiThreadUsage) {
scoped_refptr<RetainingOneShotTimerHolder> timer(
new RetainingOneShotTimerHolder(
/*max_delay=*/base::Milliseconds(100),
/*min_delay=*/base::Milliseconds(50),
task_environment_.GetMainThreadTaskRunner(), CreateTimerCallback()));
PostToThreadPoolAndWait(base::BindLambdaForTesting(
[timer]() { timer->ResetTimerIfNecessary(); }));
task_environment_.FastForwardBy(base::Milliseconds(101));
EXPECT_EQ(timer_fired_count_, 1);
PostToThreadPoolAndWait(base::BindLambdaForTesting(
[timer]() { timer->ResetTimerIfNecessary(); }));
task_environment_.FastForwardBy(base::Milliseconds(50));
PostToThreadPoolAndWait(
base::BindLambdaForTesting([timer]() { timer->DestroyTimer(); }));
task_environment_.FastForwardBy(base::Milliseconds(51));
// The timer has been destroyed and should not be fired again.
EXPECT_EQ(timer_fired_count_, 1);
}
} // namespace gpu
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