1 /*
2 * Copyright 2016 The WebRTC Project Authors. All rights reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
11 #if defined(WEBRTC_WIN)
12 // clang-format off
13 #include <windows.h> // Must come first.
14 #include <mmsystem.h>
15 // clang-format on
16 #endif
17
18 #include <stdint.h>
19 #include <memory>
20 #include <utility>
21 #include <vector>
22
23 #include "absl/memory/memory.h"
24 #include "rtc_base/bind.h"
25 #include "rtc_base/event.h"
26 #include "rtc_base/task_queue_for_test.h"
27 #include "rtc_base/time_utils.h"
28 #include "test/gtest.h"
29
30 namespace rtc {
31
32 namespace {
33 // Noop on all platforms except Windows, where it turns on high precision
34 // multimedia timers which increases the precision of TimeMillis() while in
35 // scope.
36 class EnableHighResTimers {
37 public:
38 #if !defined(WEBRTC_WIN)
EnableHighResTimers()39 EnableHighResTimers() {}
40 #else
41 EnableHighResTimers() : enabled_(timeBeginPeriod(1) == TIMERR_NOERROR) {}
42 ~EnableHighResTimers() {
43 if (enabled_)
44 timeEndPeriod(1);
45 }
46
47 private:
48 const bool enabled_;
49 #endif
50 };
51
CheckCurrent(Event * signal,TaskQueue * queue)52 void CheckCurrent(Event* signal, TaskQueue* queue) {
53 EXPECT_TRUE(queue->IsCurrent());
54 if (signal)
55 signal->Set();
56 }
57
58 } // namespace
59
60 // This task needs to be run manually due to the slowness of some of our bots.
61 // TODO(tommi): Can we run this on the perf bots?
TEST(TaskQueueTest,DISABLED_PostDelayedHighRes)62 TEST(TaskQueueTest, DISABLED_PostDelayedHighRes) {
63 EnableHighResTimers high_res_scope;
64
65 static const char kQueueName[] = "PostDelayedHighRes";
66 Event event;
67 webrtc::TaskQueueForTest queue(kQueueName, TaskQueue::Priority::HIGH);
68
69 uint32_t start = Time();
70 queue.PostDelayedTask(Bind(&CheckCurrent, &event, &queue), 3);
71 EXPECT_TRUE(event.Wait(1000));
72 uint32_t end = TimeMillis();
73 // These tests are a little relaxed due to how "powerful" our test bots can
74 // be. Most recently we've seen windows bots fire the callback after 94-99ms,
75 // which is why we have a little bit of leeway backwards as well.
76 EXPECT_GE(end - start, 3u);
77 EXPECT_NEAR(end - start, 3, 3u);
78 }
79
80 } // namespace rtc
81