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/*
* Copyright 2016 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#if defined(WEBRTC_WIN)
// clang-format off
#include <windows.h> // Must come first.
#include <mmsystem.h>
// clang-format on
#endif
#include <stdint.h>
#include <memory>
#include <utility>
#include <vector>
#include "absl/memory/memory.h"
#include "api/units/time_delta.h"
#include "rtc_base/event.h"
#include "rtc_base/task_queue_for_test.h"
#include "rtc_base/time_utils.h"
#include "test/gtest.h"
namespace webrtc {
namespace {
// Noop on all platforms except Windows, where it turns on high precision
// multimedia timers which increases the precision of TimeMillis() while in
// scope.
class EnableHighResTimers {
public:
#if !defined(WEBRTC_WIN)
EnableHighResTimers() {}
#else
EnableHighResTimers() : enabled_(timeBeginPeriod(1) == TIMERR_NOERROR) {}
~EnableHighResTimers() {
if (enabled_)
timeEndPeriod(1);
}
private:
const bool enabled_;
#endif
};
} // namespace
// This task needs to be run manually due to the slowness of some of our bots.
// TODO(tommi): Can we run this on the perf bots?
TEST(TaskQueueTest, DISABLED_PostDelayedHighRes) {
EnableHighResTimers high_res_scope;
static const char kQueueName[] = "PostDelayedHighRes";
rtc::Event event;
TaskQueueForTest queue(kQueueName, TaskQueueFactory::Priority::HIGH);
uint32_t start = rtc::TimeMillis();
queue.PostDelayedTask(
[&event, &queue] {
EXPECT_TRUE(queue.IsCurrent());
event.Set();
},
TimeDelta::Millis(3));
EXPECT_TRUE(event.Wait(TimeDelta::Seconds(1)));
uint32_t end = rtc::TimeMillis();
// These tests are a little relaxed due to how "powerful" our test bots can
// be. Most recently we've seen windows bots fire the callback after 94-99ms,
// which is why we have a little bit of leeway backwards as well.
EXPECT_GE(end - start, 3u);
EXPECT_NEAR(end - start, 3, 3u);
}
} // namespace webrtc
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