86 lines
2.8 KiB
C++
86 lines
2.8 KiB
C++
// Copyright 2012 The Chromium Authors
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
|
|
#include "base/timer/hi_res_timer_manager.h"
|
|
|
|
#include <memory>
|
|
#include <utility>
|
|
|
|
#include "base/base_switches.h"
|
|
#include "base/power_monitor/power_monitor.h"
|
|
#include "base/power_monitor/power_monitor_device_source.h"
|
|
#include "base/test/power_monitor_test.h"
|
|
#include "base/test/scoped_command_line.h"
|
|
#include "base/test/task_environment.h"
|
|
#include "base/time/time.h"
|
|
#include "build/build_config.h"
|
|
#include "testing/gtest/include/gtest/gtest.h"
|
|
|
|
namespace base {
|
|
|
|
#if BUILDFLAG(IS_WIN)
|
|
TEST(HiResTimerManagerTest, ToggleOnOff) {
|
|
test::TaskEnvironment task_environment;
|
|
base::test::ScopedPowerMonitorTestSource power_monitor_source;
|
|
|
|
HighResolutionTimerManager manager;
|
|
|
|
// Loop a few times to test power toggling.
|
|
for (int times = 0; times != 3; ++times) {
|
|
// The manager has the high resolution clock enabled now.
|
|
EXPECT_TRUE(manager.hi_res_clock_available());
|
|
// But the Time class has it off, because it hasn't been activated.
|
|
EXPECT_FALSE(base::Time::IsHighResolutionTimerInUse());
|
|
|
|
// Activate the high resolution timer.
|
|
base::Time::ActivateHighResolutionTimer(true);
|
|
EXPECT_TRUE(base::Time::IsHighResolutionTimerInUse());
|
|
|
|
// Simulate a on-battery power event.
|
|
power_monitor_source.GeneratePowerStateEvent(true);
|
|
|
|
EXPECT_FALSE(manager.hi_res_clock_available());
|
|
EXPECT_FALSE(base::Time::IsHighResolutionTimerInUse());
|
|
|
|
// Back to on-AC power.
|
|
power_monitor_source.GeneratePowerStateEvent(false);
|
|
EXPECT_TRUE(manager.hi_res_clock_available());
|
|
EXPECT_TRUE(base::Time::IsHighResolutionTimerInUse());
|
|
|
|
// De-activate the high resolution timer.
|
|
base::Time::ActivateHighResolutionTimer(false);
|
|
}
|
|
}
|
|
|
|
TEST(HiResTimerManagerTest, DisableFromCommandLine) {
|
|
base::test::ScopedCommandLine command_line;
|
|
command_line.GetProcessCommandLine()->AppendSwitch(
|
|
switches::kDisableHighResTimer);
|
|
|
|
// Reset to known initial state. Test suite implementation
|
|
// enables the high resolution timer by default.
|
|
Time::EnableHighResolutionTimer(false);
|
|
|
|
HighResolutionTimerManager manager;
|
|
|
|
// The high resolution clock is disabled via the command line flag.
|
|
EXPECT_FALSE(manager.hi_res_clock_available());
|
|
|
|
// Time class has it off as well, because it hasn't been activated.
|
|
EXPECT_FALSE(base::Time::IsHighResolutionTimerInUse());
|
|
|
|
// Try to activate the high resolution timer.
|
|
base::Time::ActivateHighResolutionTimer(true);
|
|
EXPECT_FALSE(base::Time::IsHighResolutionTimerInUse());
|
|
|
|
// De-activate the high resolution timer.
|
|
base::Time::ActivateHighResolutionTimer(false);
|
|
|
|
// Re-enable the high-resolution timer for testing.
|
|
Time::EnableHighResolutionTimer(true);
|
|
}
|
|
#endif // BUILDFLAG(IS_WIN)
|
|
|
|
} // namespace base
|