Update To 11.40.268.0
[platform/framework/web/crosswalk.git] / src / third_party / webrtc / base / thread_checker_unittest.cc
1 /*
2  *  Copyright (c) 2014 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 // Borrowed from Chromium's src/base/threading/thread_checker_unittest.cc.
12
13 #include "testing/gtest/include/gtest/gtest.h"
14 #include "webrtc/base/checks.h"
15 #include "webrtc/base/thread.h"
16 #include "webrtc/base/thread_checker.h"
17 #include "webrtc/base/scoped_ptr.h"
18 #include "webrtc/test/testsupport/gtest_disable.h"
19
20 // Duplicated from base/threading/thread_checker.h so that we can be
21 // good citizens there and undef the macro.
22 #if !defined(NDEBUG) || defined(DCHECK_ALWAYS_ON)
23 #define ENABLE_THREAD_CHECKER 1
24 #else
25 #define ENABLE_THREAD_CHECKER 0
26 #endif
27
28 namespace rtc {
29
30 namespace {
31
32 // Simple class to exercise the basics of ThreadChecker.
33 // Both the destructor and DoStuff should verify that they were
34 // called on the same thread as the constructor.
35 class ThreadCheckerClass : public ThreadChecker {
36  public:
37   ThreadCheckerClass() {}
38
39   // Verifies that it was called on the same thread as the constructor.
40   void DoStuff() {
41     DCHECK(CalledOnValidThread());
42   }
43
44   void DetachFromThread() {
45     ThreadChecker::DetachFromThread();
46   }
47
48   static void MethodOnDifferentThreadImpl();
49   static void DetachThenCallFromDifferentThreadImpl();
50
51  private:
52   DISALLOW_COPY_AND_ASSIGN(ThreadCheckerClass);
53 };
54
55 // Calls ThreadCheckerClass::DoStuff on another thread.
56 class CallDoStuffOnThread : public Thread {
57  public:
58   explicit CallDoStuffOnThread(ThreadCheckerClass* thread_checker_class)
59       : Thread(),
60         thread_checker_class_(thread_checker_class) {
61     SetName("call_do_stuff_on_thread", NULL);
62   }
63
64   virtual void Run() OVERRIDE {
65     thread_checker_class_->DoStuff();
66   }
67
68   // New method. Needed since Thread::Join is protected, and it is called by
69   // the TEST.
70   void Join() {
71     Thread::Join();
72   }
73
74  private:
75   ThreadCheckerClass* thread_checker_class_;
76
77   DISALLOW_COPY_AND_ASSIGN(CallDoStuffOnThread);
78 };
79
80 // Deletes ThreadCheckerClass on a different thread.
81 class DeleteThreadCheckerClassOnThread : public Thread {
82  public:
83   explicit DeleteThreadCheckerClassOnThread(
84       ThreadCheckerClass* thread_checker_class)
85       : Thread(),
86         thread_checker_class_(thread_checker_class) {
87     SetName("delete_thread_checker_class_on_thread", NULL);
88   }
89
90   virtual void Run() OVERRIDE {
91     thread_checker_class_.reset();
92   }
93
94   // New method. Needed since Thread::Join is protected, and it is called by
95   // the TEST.
96   void Join() {
97     Thread::Join();
98   }
99
100  private:
101   scoped_ptr<ThreadCheckerClass> thread_checker_class_;
102
103   DISALLOW_COPY_AND_ASSIGN(DeleteThreadCheckerClassOnThread);
104 };
105
106 }  // namespace
107
108 TEST(ThreadCheckerTest, CallsAllowedOnSameThread) {
109   scoped_ptr<ThreadCheckerClass> thread_checker_class(
110       new ThreadCheckerClass);
111
112   // Verify that DoStuff doesn't assert.
113   thread_checker_class->DoStuff();
114
115   // Verify that the destructor doesn't assert.
116   thread_checker_class.reset();
117 }
118
119 TEST(ThreadCheckerTest, DestructorAllowedOnDifferentThread) {
120   scoped_ptr<ThreadCheckerClass> thread_checker_class(
121       new ThreadCheckerClass);
122
123   // Verify that the destructor doesn't assert
124   // when called on a different thread.
125   DeleteThreadCheckerClassOnThread delete_on_thread(
126       thread_checker_class.release());
127
128   delete_on_thread.Start();
129   delete_on_thread.Join();
130 }
131
132 TEST(ThreadCheckerTest, DetachFromThread) {
133   scoped_ptr<ThreadCheckerClass> thread_checker_class(
134       new ThreadCheckerClass);
135
136   // Verify that DoStuff doesn't assert when called on a different thread after
137   // a call to DetachFromThread.
138   thread_checker_class->DetachFromThread();
139   CallDoStuffOnThread call_on_thread(thread_checker_class.get());
140
141   call_on_thread.Start();
142   call_on_thread.Join();
143 }
144
145 #if GTEST_HAS_DEATH_TEST || !ENABLE_THREAD_CHECKER
146
147 void ThreadCheckerClass::MethodOnDifferentThreadImpl() {
148   scoped_ptr<ThreadCheckerClass> thread_checker_class(
149       new ThreadCheckerClass);
150
151   // DoStuff should assert in debug builds only when called on a
152   // different thread.
153   CallDoStuffOnThread call_on_thread(thread_checker_class.get());
154
155   call_on_thread.Start();
156   call_on_thread.Join();
157 }
158
159 #if ENABLE_THREAD_CHECKER
160 TEST(ThreadCheckerDeathTest, MethodNotAllowedOnDifferentThreadInDebug) {
161   ASSERT_DEATH({
162       ThreadCheckerClass::MethodOnDifferentThreadImpl();
163     }, "");
164 }
165 #else
166 TEST(ThreadCheckerTest, MethodAllowedOnDifferentThreadInRelease) {
167   ThreadCheckerClass::MethodOnDifferentThreadImpl();
168 }
169 #endif  // ENABLE_THREAD_CHECKER
170
171 void ThreadCheckerClass::DetachThenCallFromDifferentThreadImpl() {
172   scoped_ptr<ThreadCheckerClass> thread_checker_class(
173       new ThreadCheckerClass);
174
175   // DoStuff doesn't assert when called on a different thread
176   // after a call to DetachFromThread.
177   thread_checker_class->DetachFromThread();
178   CallDoStuffOnThread call_on_thread(thread_checker_class.get());
179
180   call_on_thread.Start();
181   call_on_thread.Join();
182
183   // DoStuff should assert in debug builds only after moving to
184   // another thread.
185   thread_checker_class->DoStuff();
186 }
187
188 #if ENABLE_THREAD_CHECKER
189 TEST(ThreadCheckerDeathTest, DetachFromThreadInDebug) {
190   ASSERT_DEATH({
191     ThreadCheckerClass::DetachThenCallFromDifferentThreadImpl();
192     }, "");
193 }
194 #else
195 TEST(ThreadCheckerTest, DetachFromThreadInRelease) {
196   ThreadCheckerClass::DetachThenCallFromDifferentThreadImpl();
197 }
198 #endif  // ENABLE_THREAD_CHECKER
199
200 #endif  // GTEST_HAS_DEATH_TEST || !ENABLE_THREAD_CHECKER
201
202 // Just in case we ever get lumped together with other compilation units.
203 #undef ENABLE_THREAD_CHECKER
204
205 }  // namespace rtc