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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include <stdarg.h> | |
| 6 #include <string.h> | |
| 7 | |
| 8 #include "base/android/path_utils.h" | |
| 9 #include "base/files/file_path.h" | |
| 10 #include "base/logging.h" | |
| 11 #include "base/memory/singleton.h" | |
| 12 #include "base/message_loop/message_loop.h" | |
| 13 #include "base/message_loop/message_pump_android.h" | |
| 14 #include "base/path_service.h" | |
| 15 #include "base/synchronization/waitable_event.h" | |
| 16 | |
| 17 namespace { | |
| 18 | |
| 19 struct RunState { | |
| 20 RunState(base::MessagePump::Delegate* delegate, int run_depth) | |
| 21 : delegate(delegate), | |
| 22 run_depth(run_depth), | |
| 23 should_quit(false) { | |
| 24 } | |
| 25 | |
| 26 base::MessagePump::Delegate* delegate; | |
| 27 | |
| 28 // Used to count how many Run() invocations are on the stack. | |
| 29 int run_depth; | |
| 30 | |
| 31 // Used to flag that the current Run() invocation should return ASAP. | |
| 32 bool should_quit; | |
| 33 }; | |
| 34 | |
| 35 RunState* g_state = NULL; | |
| 36 | |
| 37 // A singleton WaitableEvent wrapper so we avoid a busy loop in | |
| 38 // MessagePumpForUIStub. Other platforms use the native event loop which blocks | |
| 39 // when there are no pending messages. | |
| 40 class Waitable { | |
| 41 public: | |
| 42 static Waitable* GetInstance() { | |
| 43 return Singleton<Waitable>::get(); | |
| 44 } | |
| 45 | |
| 46 // Signals that there are more work to do. | |
| 47 void Signal() { | |
| 48 waitable_event_.Signal(); | |
| 49 } | |
| 50 | |
| 51 // Blocks until more work is scheduled. | |
| 52 void Block() { | |
| 53 waitable_event_.Wait(); | |
| 54 } | |
| 55 | |
| 56 void Quit() { | |
| 57 g_state->should_quit = true; | |
| 58 Signal(); | |
| 59 } | |
| 60 | |
| 61 private: | |
| 62 friend struct DefaultSingletonTraits<Waitable>; | |
| 63 | |
| 64 Waitable() | |
| 65 : waitable_event_(false, false) { | |
| 66 } | |
| 67 | |
| 68 base::WaitableEvent waitable_event_; | |
| 69 | |
| 70 DISALLOW_COPY_AND_ASSIGN(Waitable); | |
| 71 }; | |
| 72 | |
| 73 // The MessagePumpForUI implementation for test purpose. | |
| 74 class MessagePumpForUIStub : public base::MessagePumpForUI { | |
| 75 ~MessagePumpForUIStub() override {} | |
| 76 | |
| 77 void Start(base::MessagePump::Delegate* delegate) override { | |
| 78 NOTREACHED() << "The Start() method shouldn't be called in test, using" | |
| 79 " Run() method should be used."; | |
| 80 } | |
| 81 | |
| 82 void Run(base::MessagePump::Delegate* delegate) override { | |
| 83 // The following was based on message_pump_glib.cc, except we're using a | |
| 84 // WaitableEvent since there are no native message loop to use. | |
| 85 RunState state(delegate, g_state ? g_state->run_depth + 1 : 1); | |
| 86 | |
| 87 RunState* previous_state = g_state; | |
| 88 g_state = &state; | |
| 89 | |
| 90 bool more_work_is_plausible = true; | |
| 91 | |
| 92 for (;;) { | |
| 93 if (!more_work_is_plausible) { | |
| 94 Waitable::GetInstance()->Block(); | |
| 95 if (g_state->should_quit) | |
| 96 break; | |
| 97 } | |
| 98 | |
| 99 more_work_is_plausible = g_state->delegate->DoWork(); | |
| 100 if (g_state->should_quit) | |
| 101 break; | |
| 102 | |
| 103 base::TimeTicks delayed_work_time; | |
| 104 more_work_is_plausible |= | |
| 105 g_state->delegate->DoDelayedWork(&delayed_work_time); | |
| 106 if (g_state->should_quit) | |
| 107 break; | |
| 108 | |
| 109 if (more_work_is_plausible) | |
| 110 continue; | |
| 111 | |
| 112 more_work_is_plausible = g_state->delegate->DoIdleWork(); | |
| 113 if (g_state->should_quit) | |
| 114 break; | |
| 115 | |
| 116 more_work_is_plausible |= !delayed_work_time.is_null(); | |
| 117 } | |
| 118 | |
| 119 g_state = previous_state; | |
| 120 } | |
| 121 | |
| 122 void Quit() override { Waitable::GetInstance()->Quit(); } | |
| 123 | |
| 124 void ScheduleWork() override { Waitable::GetInstance()->Signal(); } | |
| 125 | |
| 126 void ScheduleDelayedWork(const base::TimeTicks& delayed_work_time) override { | |
| 127 Waitable::GetInstance()->Signal(); | |
| 128 } | |
| 129 }; | |
| 130 | |
| 131 scoped_ptr<base::MessagePump> CreateMessagePumpForUIStub() { | |
| 132 return scoped_ptr<base::MessagePump>(new MessagePumpForUIStub()); | |
| 133 }; | |
| 134 | |
| 135 // Provides the test path for DIR_MODULE and DIR_ANDROID_APP_DATA. | |
| 136 bool GetTestProviderPath(int key, base::FilePath* result) { | |
| 137 switch (key) { | |
| 138 case base::DIR_ANDROID_APP_DATA: { | |
| 139 // For tests, app data is put in external storage. | |
| 140 return base::android::GetExternalStorageDirectory(result); | |
| 141 } | |
| 142 default: | |
| 143 return false; | |
| 144 } | |
| 145 } | |
| 146 | |
| 147 void InitPathProvider(int key) { | |
| 148 base::FilePath path; | |
| 149 // If failed to override the key, that means the way has not been registered. | |
| 150 if (GetTestProviderPath(key, &path) && !PathService::Override(key, path)) | |
| 151 PathService::RegisterProvider(&GetTestProviderPath, key, key + 1); | |
| 152 } | |
| 153 | |
| 154 } // namespace | |
| 155 | |
| 156 namespace base { | |
| 157 | |
| 158 void InitAndroidTestLogging() { | |
| 159 logging::LoggingSettings settings; | |
| 160 settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG; | |
| 161 logging::InitLogging(settings); | |
| 162 // To view log output with IDs and timestamps use "adb logcat -v threadtime". | |
| 163 logging::SetLogItems(false, // Process ID | |
| 164 false, // Thread ID | |
| 165 false, // Timestamp | |
| 166 false); // Tick count | |
| 167 } | |
| 168 | |
| 169 void InitAndroidTestPaths() { | |
| 170 InitPathProvider(DIR_MODULE); | |
| 171 InitPathProvider(DIR_ANDROID_APP_DATA); | |
| 172 } | |
| 173 | |
| 174 void InitAndroidTestMessageLoop() { | |
| 175 if (!MessageLoop::InitMessagePumpForUIFactory(&CreateMessagePumpForUIStub)) | |
| 176 LOG(INFO) << "MessagePumpForUIFactory already set, unable to override."; | |
| 177 } | |
| 178 | |
| 179 void InitAndroidTest() { | |
| 180 InitAndroidTestLogging(); | |
| 181 InitAndroidTestPaths(); | |
| 182 InitAndroidTestMessageLoop(); | |
| 183 } | |
| 184 } // namespace base | |
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