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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 <vector> | 20 #include <vector> |
21 | 21 |
22 #include "webrtc/base/basictypes.h" | 22 #include "webrtc/base/basictypes.h" |
23 #include "webrtc/base/constructormagic.h" | 23 #include "webrtc/base/constructormagic.h" |
24 #include "webrtc/base/criticalsection.h" | 24 #include "webrtc/base/criticalsection.h" |
| 25 #include "webrtc/base/location.h" |
25 #include "webrtc/base/messagehandler.h" | 26 #include "webrtc/base/messagehandler.h" |
26 #include "webrtc/base/scoped_ref_ptr.h" | 27 #include "webrtc/base/scoped_ref_ptr.h" |
27 #include "webrtc/base/sharedexclusivelock.h" | 28 #include "webrtc/base/sharedexclusivelock.h" |
28 #include "webrtc/base/sigslot.h" | 29 #include "webrtc/base/sigslot.h" |
29 #include "webrtc/base/socketserver.h" | 30 #include "webrtc/base/socketserver.h" |
30 #include "webrtc/base/timeutils.h" | 31 #include "webrtc/base/timeutils.h" |
31 #include "webrtc/base/thread_annotations.h" | 32 #include "webrtc/base/thread_annotations.h" |
32 | 33 |
33 namespace rtc { | 34 namespace rtc { |
34 | 35 |
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131 private: | 132 private: |
132 T* data_; | 133 T* data_; |
133 }; | 134 }; |
134 | 135 |
135 const uint32_t MQID_ANY = static_cast<uint32_t>(-1); | 136 const uint32_t MQID_ANY = static_cast<uint32_t>(-1); |
136 const uint32_t MQID_DISPOSE = static_cast<uint32_t>(-2); | 137 const uint32_t MQID_DISPOSE = static_cast<uint32_t>(-2); |
137 | 138 |
138 // No destructor | 139 // No destructor |
139 | 140 |
140 struct Message { | 141 struct Message { |
141 Message() { | 142 Message() |
142 memset(this, 0, sizeof(*this)); | 143 : phandler(nullptr), message_id(0), pdata(nullptr), ts_sensitive(0) {} |
143 } | |
144 inline bool Match(MessageHandler* handler, uint32_t id) const { | 144 inline bool Match(MessageHandler* handler, uint32_t id) const { |
145 return (handler == NULL || handler == phandler) | 145 return (handler == NULL || handler == phandler) |
146 && (id == MQID_ANY || id == message_id); | 146 && (id == MQID_ANY || id == message_id); |
147 } | 147 } |
| 148 Location posted_from; |
148 MessageHandler *phandler; | 149 MessageHandler *phandler; |
149 uint32_t message_id; | 150 uint32_t message_id; |
150 MessageData *pdata; | 151 MessageData *pdata; |
151 int64_t ts_sensitive; | 152 int64_t ts_sensitive; |
152 }; | 153 }; |
153 | 154 |
154 typedef std::list<Message> MessageList; | 155 typedef std::list<Message> MessageList; |
155 | 156 |
156 // DelayedMessage goes into a priority queue, sorted by trigger time. Messages | 157 // DelayedMessage goes into a priority queue, sorted by trigger time. Messages |
157 // with the same trigger time are processed in num_ (FIFO) order. | 158 // with the same trigger time are processed in num_ (FIFO) order. |
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206 virtual bool IsQuitting(); | 207 virtual bool IsQuitting(); |
207 virtual void Restart(); | 208 virtual void Restart(); |
208 | 209 |
209 // Get() will process I/O until: | 210 // Get() will process I/O until: |
210 // 1) A message is available (returns true) | 211 // 1) A message is available (returns true) |
211 // 2) cmsWait seconds have elapsed (returns false) | 212 // 2) cmsWait seconds have elapsed (returns false) |
212 // 3) Stop() is called (returns false) | 213 // 3) Stop() is called (returns false) |
213 virtual bool Get(Message *pmsg, int cmsWait = kForever, | 214 virtual bool Get(Message *pmsg, int cmsWait = kForever, |
214 bool process_io = true); | 215 bool process_io = true); |
215 virtual bool Peek(Message *pmsg, int cmsWait = 0); | 216 virtual bool Peek(Message *pmsg, int cmsWait = 0); |
216 virtual void Post(MessageHandler* phandler, | 217 virtual void Post(const Location& posted_from, |
| 218 MessageHandler* phandler, |
217 uint32_t id = 0, | 219 uint32_t id = 0, |
218 MessageData* pdata = NULL, | 220 MessageData* pdata = NULL, |
219 bool time_sensitive = false); | 221 bool time_sensitive = false); |
220 virtual void PostDelayed(int cmsDelay, | 222 virtual void PostDelayed(const Location& posted_from, |
| 223 int cmsDelay, |
221 MessageHandler* phandler, | 224 MessageHandler* phandler, |
222 uint32_t id = 0, | 225 uint32_t id = 0, |
223 MessageData* pdata = NULL); | 226 MessageData* pdata = NULL); |
224 virtual void PostAt(int64_t tstamp, | 227 virtual void PostAt(const Location& posted_from, |
| 228 int64_t tstamp, |
225 MessageHandler* phandler, | 229 MessageHandler* phandler, |
226 uint32_t id = 0, | 230 uint32_t id = 0, |
227 MessageData* pdata = NULL); | 231 MessageData* pdata = NULL); |
228 // TODO(honghaiz): Remove this when all the dependencies are removed. | 232 // TODO(honghaiz): Remove this when all the dependencies are removed. |
229 virtual void PostAt(uint32_t tstamp, | 233 virtual void PostAt(const Location& posted_from, |
| 234 uint32_t tstamp, |
230 MessageHandler* phandler, | 235 MessageHandler* phandler, |
231 uint32_t id = 0, | 236 uint32_t id = 0, |
232 MessageData* pdata = NULL); | 237 MessageData* pdata = NULL); |
233 virtual void Clear(MessageHandler* phandler, | 238 virtual void Clear(MessageHandler* phandler, |
234 uint32_t id = MQID_ANY, | 239 uint32_t id = MQID_ANY, |
235 MessageList* removed = NULL); | 240 MessageList* removed = NULL); |
236 virtual void Dispatch(Message *pmsg); | 241 virtual void Dispatch(Message *pmsg); |
237 virtual void ReceiveSends(); | 242 virtual void ReceiveSends(); |
238 | 243 |
239 // Amount of time until the next message can be retrieved | 244 // Amount of time until the next message can be retrieved |
240 virtual int GetDelay(); | 245 virtual int GetDelay(); |
241 | 246 |
242 bool empty() const { return size() == 0u; } | 247 bool empty() const { return size() == 0u; } |
243 size_t size() const { | 248 size_t size() const { |
244 CritScope cs(&crit_); // msgq_.size() is not thread safe. | 249 CritScope cs(&crit_); // msgq_.size() is not thread safe. |
245 return msgq_.size() + dmsgq_.size() + (fPeekKeep_ ? 1u : 0u); | 250 return msgq_.size() + dmsgq_.size() + (fPeekKeep_ ? 1u : 0u); |
246 } | 251 } |
247 | 252 |
248 // Internally posts a message which causes the doomed object to be deleted | 253 // Internally posts a message which causes the doomed object to be deleted |
249 template<class T> void Dispose(T* doomed) { | 254 template<class T> void Dispose(T* doomed) { |
250 if (doomed) { | 255 if (doomed) { |
251 Post(NULL, MQID_DISPOSE, new DisposeData<T>(doomed)); | 256 Post(RTC_FROM_HERE, NULL, MQID_DISPOSE, new DisposeData<T>(doomed)); |
252 } | 257 } |
253 } | 258 } |
254 | 259 |
255 // When this signal is sent out, any references to this queue should | 260 // When this signal is sent out, any references to this queue should |
256 // no longer be used. | 261 // no longer be used. |
257 sigslot::signal0<> SignalQueueDestroyed; | 262 sigslot::signal0<> SignalQueueDestroyed; |
258 | 263 |
259 protected: | 264 protected: |
260 class PriorityQueue : public std::priority_queue<DelayedMessage> { | 265 class PriorityQueue : public std::priority_queue<DelayedMessage> { |
261 public: | 266 public: |
262 container_type& container() { return c; } | 267 container_type& container() { return c; } |
263 void reheap() { make_heap(c.begin(), c.end(), comp); } | 268 void reheap() { make_heap(c.begin(), c.end(), comp); } |
264 }; | 269 }; |
265 | 270 |
266 void DoDelayPost(int64_t cmsDelay, | 271 void DoDelayPost(const Location& posted_from, |
| 272 int64_t cmsDelay, |
267 int64_t tstamp, | 273 int64_t tstamp, |
268 MessageHandler* phandler, | 274 MessageHandler* phandler, |
269 uint32_t id, | 275 uint32_t id, |
270 MessageData* pdata); | 276 MessageData* pdata); |
271 | 277 |
272 // Perform initialization, subclasses must call this from their constructor | 278 // Perform initialization, subclasses must call this from their constructor |
273 // if false was passed as init_queue to the MessageQueue constructor. | 279 // if false was passed as init_queue to the MessageQueue constructor. |
274 void DoInit(); | 280 void DoInit(); |
275 | 281 |
276 // Perform cleanup, subclasses that override Clear must call this from the | 282 // Perform cleanup, subclasses that override Clear must call this from the |
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295 // Used if SocketServer ownership lies with |this|. | 301 // Used if SocketServer ownership lies with |this|. |
296 std::unique_ptr<SocketServer> own_ss_; | 302 std::unique_ptr<SocketServer> own_ss_; |
297 SharedExclusiveLock ss_lock_; | 303 SharedExclusiveLock ss_lock_; |
298 | 304 |
299 RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(MessageQueue); | 305 RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(MessageQueue); |
300 }; | 306 }; |
301 | 307 |
302 } // namespace rtc | 308 } // namespace rtc |
303 | 309 |
304 #endif // WEBRTC_BASE_MESSAGEQUEUE_H_ | 310 #endif // WEBRTC_BASE_MESSAGEQUEUE_H_ |
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