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| 1 /* | 1 /* |
| 2 * Copyright 2004 The WebRTC Project Authors. All rights reserved. | 2 * Copyright 2004 The WebRTC Project Authors. All rights reserved. |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license | 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 | 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 | 6 * tree. An additional intellectual property rights grant can be found |
| 7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
| 8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
| 9 */ | 9 */ |
| 10 | 10 |
| 11 #ifndef WEBRTC_BASE_MESSAGEQUEUE_H_ | 11 #ifndef WEBRTC_BASE_MESSAGEQUEUE_H_ |
| 12 #define WEBRTC_BASE_MESSAGEQUEUE_H_ | 12 #define WEBRTC_BASE_MESSAGEQUEUE_H_ |
| 13 | 13 |
| 14 #include <string.h> | 14 #include <string.h> |
| 15 | 15 |
| 16 #include <algorithm> | 16 #include <algorithm> |
| 17 #include <list> | 17 #include <list> |
| 18 #include <memory> | 18 #include <memory> |
| 19 #include <queue> | 19 #include <queue> |
| 20 #include <utility> | 20 #include <utility> |
| 21 #include <vector> | 21 #include <vector> |
| 22 | 22 |
| 23 #include "webrtc/base/basictypes.h" | 23 #include "webrtc/base/basictypes.h" |
| 24 #include "webrtc/base/constructormagic.h" | 24 #include "webrtc/base/constructormagic.h" |
| 25 #include "webrtc/base/criticalsection.h" | 25 #include "webrtc/base/criticalsection.h" |
| 26 #include "webrtc/base/location.h" | 26 #include "webrtc/base/location.h" |
| 27 #include "webrtc/base/messagehandler.h" | 27 #include "webrtc/base/messagehandler.h" |
| 28 #include "webrtc/base/scoped_ref_ptr.h" | 28 #include "webrtc/base/scoped_ref_ptr.h" |
| 29 #include "webrtc/base/sharedexclusivelock.h" | |
| 30 #include "webrtc/base/sigslot.h" | 29 #include "webrtc/base/sigslot.h" |
| 31 #include "webrtc/base/socketserver.h" | 30 #include "webrtc/base/socketserver.h" |
| 32 #include "webrtc/base/timeutils.h" | 31 #include "webrtc/base/timeutils.h" |
| 33 #include "webrtc/base/thread_annotations.h" | 32 #include "webrtc/base/thread_annotations.h" |
| 34 | 33 |
| 35 namespace rtc { | 34 namespace rtc { |
| 36 | 35 |
| 37 struct Message; | 36 struct Message; |
| 38 class MessageQueue; | 37 class MessageQueue; |
| 39 | 38 |
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| 203 MessageQueue(SocketServer* ss, bool init_queue); | 202 MessageQueue(SocketServer* ss, bool init_queue); |
| 204 MessageQueue(std::unique_ptr<SocketServer> ss, bool init_queue); | 203 MessageQueue(std::unique_ptr<SocketServer> ss, bool init_queue); |
| 205 | 204 |
| 206 // NOTE: SUBCLASSES OF MessageQueue THAT OVERRIDE Clear MUST CALL | 205 // NOTE: SUBCLASSES OF MessageQueue THAT OVERRIDE Clear MUST CALL |
| 207 // DoDestroy() IN THEIR DESTRUCTORS! This is required to avoid a data race | 206 // DoDestroy() IN THEIR DESTRUCTORS! This is required to avoid a data race |
| 208 // between the destructor modifying the vtable, and the MessageQueueManager | 207 // between the destructor modifying the vtable, and the MessageQueueManager |
| 209 // calling Clear on the object from a different thread. | 208 // calling Clear on the object from a different thread. |
| 210 virtual ~MessageQueue(); | 209 virtual ~MessageQueue(); |
| 211 | 210 |
| 212 SocketServer* socketserver(); | 211 SocketServer* socketserver(); |
| 213 void set_socketserver(SocketServer* ss); | |
| 214 | 212 |
| 215 // Note: The behavior of MessageQueue has changed. When a MQ is stopped, | 213 // Note: The behavior of MessageQueue has changed. When a MQ is stopped, |
| 216 // futher Posts and Sends will fail. However, any pending Sends and *ready* | 214 // futher Posts and Sends will fail. However, any pending Sends and *ready* |
| 217 // Posts (as opposed to unexpired delayed Posts) will be delivered before | 215 // Posts (as opposed to unexpired delayed Posts) will be delivered before |
| 218 // Get (or Peek) returns false. By guaranteeing delivery of those messages, | 216 // Get (or Peek) returns false. By guaranteeing delivery of those messages, |
| 219 // we eliminate the race condition when an MessageHandler and MessageQueue | 217 // we eliminate the race condition when an MessageHandler and MessageQueue |
| 220 // may be destroyed independently of each other. | 218 // may be destroyed independently of each other. |
| 221 virtual void Quit(); | 219 virtual void Quit(); |
| 222 virtual bool IsQuitting(); | 220 virtual bool IsQuitting(); |
| 223 virtual void Restart(); | 221 virtual void Restart(); |
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| 310 PriorityQueue dmsgq_ GUARDED_BY(crit_); | 308 PriorityQueue dmsgq_ GUARDED_BY(crit_); |
| 311 uint32_t dmsgq_next_num_ GUARDED_BY(crit_); | 309 uint32_t dmsgq_next_num_ GUARDED_BY(crit_); |
| 312 CriticalSection crit_; | 310 CriticalSection crit_; |
| 313 bool fInitialized_; | 311 bool fInitialized_; |
| 314 bool fDestroyed_; | 312 bool fDestroyed_; |
| 315 | 313 |
| 316 private: | 314 private: |
| 317 volatile int stop_; | 315 volatile int stop_; |
| 318 | 316 |
| 319 // The SocketServer might not be owned by MessageQueue. | 317 // The SocketServer might not be owned by MessageQueue. |
| 320 SocketServer* ss_ GUARDED_BY(ss_lock_); | 318 SocketServer* const ss_; |
| 321 // Used if SocketServer ownership lies with |this|. | 319 // Used if SocketServer ownership lies with |this|. |
| 322 std::unique_ptr<SocketServer> own_ss_; | 320 std::unique_ptr<SocketServer> own_ss_; |
| 323 SharedExclusiveLock ss_lock_; | |
| 324 | 321 |
| 325 RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(MessageQueue); | 322 RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(MessageQueue); |
| 326 }; | 323 }; |
| 327 | 324 |
| 328 } // namespace rtc | 325 } // namespace rtc |
| 329 | 326 |
| 330 #endif // WEBRTC_BASE_MESSAGEQUEUE_H_ | 327 #endif // WEBRTC_BASE_MESSAGEQUEUE_H_ |
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