1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
/*
* Copyright (c) 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.
*/
#include "modules/desktop_capture/screen_drawer.h"
#include <stdint.h>
#include <atomic>
#include <memory>
#include "api/function_view.h"
#include "rtc_base/checks.h"
#include "rtc_base/logging.h"
#include "rtc_base/platform_thread.h"
#include "rtc_base/random.h"
#include "rtc_base/thread.h"
#include "rtc_base/time_utils.h"
#include "test/gtest.h"
#if defined(WEBRTC_POSIX)
#include "modules/desktop_capture/screen_drawer_lock_posix.h"
#endif
namespace webrtc {
namespace {
void TestScreenDrawerLock(
FunctionView<std::unique_ptr<ScreenDrawerLock>()> ctor) {
constexpr int kLockDurationMs = 100;
std::atomic<bool> created(false);
std::atomic<bool> ready(false);
class Task {
public:
Task(std::atomic<bool>* created,
const std::atomic<bool>& ready,
FunctionView<std::unique_ptr<ScreenDrawerLock>()> ctor)
: created_(created), ready_(ready), ctor_(ctor) {}
~Task() = default;
void RunTask() {
std::unique_ptr<ScreenDrawerLock> lock = ctor_();
ASSERT_TRUE(!!lock);
created_->store(true);
// Wait for the main thread to get the signal of created_.
while (!ready_.load()) {
Thread::SleepMs(1);
}
// At this point, main thread should begin to create a second lock. Though
// it's still possible the second lock won't be created before the
// following sleep has been finished, the possibility will be
// significantly reduced.
const int64_t current_ms = TimeMillis();
// SleepMs() may return early. See
// https://cs.chromium.org/chromium/src/third_party/webrtc/system_wrappers/include/sleep.h?rcl=4a604c80cecce18aff6fc5e16296d04675312d83&l=20
// But we need to ensure at least 100 ms has been passed before unlocking
// `lock`.
while (TimeMillis() - current_ms < kLockDurationMs) {
Thread::SleepMs(kLockDurationMs - (TimeMillis() - current_ms));
}
}
private:
std::atomic<bool>* const created_;
const std::atomic<bool>& ready_;
const FunctionView<std::unique_ptr<ScreenDrawerLock>()> ctor_;
} task(&created, ready, ctor);
auto lock_thread =
PlatformThread::SpawnJoinable([&task] { task.RunTask(); }, "lock_thread");
// Wait for the first lock in Task::RunTask() to be created.
// TODO(zijiehe): Find a better solution to wait for the creation of the first
// lock. See
// https://chromium-review.googlesource.com/c/607688/13/webrtc/modules/desktop_capture/screen_drawer_unittest.cc
while (!created.load()) {
Thread::SleepMs(1);
}
const int64_t start_ms = TimeMillis();
ready.store(true);
// This is unlikely to fail, but just in case current thread is too laggy and
// cause the SleepMs() in RunTask() to finish before we creating another lock.
ASSERT_GT(kLockDurationMs, TimeMillis() - start_ms);
ctor();
ASSERT_LE(kLockDurationMs, TimeMillis() - start_ms);
}
} // namespace
// These are a set of manual test cases, as we do not have an automatical way to
// detect whether a ScreenDrawer on a certain platform works well without
// ScreenCapturer(s). So you may execute these test cases with
// --gtest_also_run_disabled_tests --gtest_filter=ScreenDrawerTest.*.
TEST(ScreenDrawerTest, DISABLED_DrawRectangles) {
std::unique_ptr<ScreenDrawer> drawer = ScreenDrawer::Create();
if (!drawer) {
RTC_LOG(LS_WARNING)
<< "No ScreenDrawer implementation for current platform.";
return;
}
if (drawer->DrawableRegion().is_empty()) {
RTC_LOG(LS_WARNING)
<< "ScreenDrawer of current platform does not provide a "
"non-empty DrawableRegion().";
return;
}
DesktopRect rect = drawer->DrawableRegion();
Random random(TimeMicros());
for (int i = 0; i < 100; i++) {
// Make sure we at least draw one pixel.
int left = random.Rand(rect.left(), rect.right() - 2);
int top = random.Rand(rect.top(), rect.bottom() - 2);
drawer->DrawRectangle(
DesktopRect::MakeLTRB(left, top, random.Rand(left + 1, rect.right()),
random.Rand(top + 1, rect.bottom())),
RgbaColor(random.Rand<uint8_t>(), random.Rand<uint8_t>(),
random.Rand<uint8_t>(), random.Rand<uint8_t>()));
if (i == 50) {
Thread::SleepMs(10000);
}
}
Thread::SleepMs(10000);
}
#if defined(THREAD_SANITIZER) // bugs.webrtc.org/10019
#define MAYBE_TwoScreenDrawerLocks DISABLED_TwoScreenDrawerLocks
#else
#define MAYBE_TwoScreenDrawerLocks TwoScreenDrawerLocks
#endif
TEST(ScreenDrawerTest, MAYBE_TwoScreenDrawerLocks) {
#if defined(WEBRTC_POSIX)
// ScreenDrawerLockPosix won't be able to unlink the named semaphore. So use a
// different semaphore name here to avoid deadlock.
const char* semaphore_name = "GSDL8784541a812011e788ff67427b";
ScreenDrawerLockPosix::Unlink(semaphore_name);
TestScreenDrawerLock([semaphore_name]() {
return std::make_unique<ScreenDrawerLockPosix>(semaphore_name);
});
#elif defined(WEBRTC_WIN)
TestScreenDrawerLock([]() { return ScreenDrawerLock::Create(); });
#endif
}
} // namespace webrtc
|
