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| 1 /* | 1 /* |
| 2 * Copyright 2014 The WebRTC Project Authors. All rights reserved. | 2 * Copyright 2014 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 |
| (...skipping 56 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 67 // int result_; | 67 // int result_; |
| 68 // }; | 68 // }; |
| 69 class AsyncInvoker : public MessageHandler { | 69 class AsyncInvoker : public MessageHandler { |
| 70 public: | 70 public: |
| 71 AsyncInvoker(); | 71 AsyncInvoker(); |
| 72 ~AsyncInvoker() override; | 72 ~AsyncInvoker() override; |
| 73 | 73 |
| 74 // Call |functor| asynchronously on |thread|, with no callback upon | 74 // Call |functor| asynchronously on |thread|, with no callback upon |
| 75 // completion. Returns immediately. | 75 // completion. Returns immediately. |
| 76 template <class ReturnT, class FunctorT> | 76 template <class ReturnT, class FunctorT> |
| 77 void AsyncInvoke(Thread* thread, | 77 void AsyncInvoke(Thread* thread, const FunctorT& functor, uint32_t id = 0) { |
| 78 const FunctorT& functor, | |
| 79 uint32 id = 0) { | |
| 80 scoped_refptr<AsyncClosure> closure( | 78 scoped_refptr<AsyncClosure> closure( |
| 81 new RefCountedObject<FireAndForgetAsyncClosure<FunctorT> >(functor)); | 79 new RefCountedObject<FireAndForgetAsyncClosure<FunctorT> >(functor)); |
| 82 DoInvoke(thread, closure, id); | 80 DoInvoke(thread, closure, id); |
| 83 } | 81 } |
| 84 | 82 |
| 85 // Call |functor| asynchronously on |thread| with |delay_ms|, with no callback | 83 // Call |functor| asynchronously on |thread| with |delay_ms|, with no callback |
| 86 // upon completion. Returns immediately. | 84 // upon completion. Returns immediately. |
| 87 template <class ReturnT, class FunctorT> | 85 template <class ReturnT, class FunctorT> |
| 88 void AsyncInvokeDelayed(Thread* thread, | 86 void AsyncInvokeDelayed(Thread* thread, |
| 89 const FunctorT& functor, | 87 const FunctorT& functor, |
| 90 uint32 delay_ms, | 88 uint32_t delay_ms, |
| 91 uint32 id = 0) { | 89 uint32_t id = 0) { |
| 92 scoped_refptr<AsyncClosure> closure( | 90 scoped_refptr<AsyncClosure> closure( |
| 93 new RefCountedObject<FireAndForgetAsyncClosure<FunctorT> >(functor)); | 91 new RefCountedObject<FireAndForgetAsyncClosure<FunctorT> >(functor)); |
| 94 DoInvokeDelayed(thread, closure, delay_ms, id); | 92 DoInvokeDelayed(thread, closure, delay_ms, id); |
| 95 } | 93 } |
| 96 | 94 |
| 97 // Call |functor| asynchronously on |thread|, calling |callback| when done. | 95 // Call |functor| asynchronously on |thread|, calling |callback| when done. |
| 98 template <class ReturnT, class FunctorT, class HostT> | 96 template <class ReturnT, class FunctorT, class HostT> |
| 99 void AsyncInvoke(Thread* thread, | 97 void AsyncInvoke(Thread* thread, |
| 100 const FunctorT& functor, | 98 const FunctorT& functor, |
| 101 void (HostT::*callback)(ReturnT), | 99 void (HostT::*callback)(ReturnT), |
| 102 HostT* callback_host, | 100 HostT* callback_host, |
| 103 uint32 id = 0) { | 101 uint32_t id = 0) { |
| 104 scoped_refptr<AsyncClosure> closure( | 102 scoped_refptr<AsyncClosure> closure( |
| 105 new RefCountedObject<NotifyingAsyncClosure<ReturnT, FunctorT, HostT> >( | 103 new RefCountedObject<NotifyingAsyncClosure<ReturnT, FunctorT, HostT> >( |
| 106 this, Thread::Current(), functor, callback, callback_host)); | 104 this, Thread::Current(), functor, callback, callback_host)); |
| 107 DoInvoke(thread, closure, id); | 105 DoInvoke(thread, closure, id); |
| 108 } | 106 } |
| 109 | 107 |
| 110 // Call |functor| asynchronously on |thread|, calling |callback| when done. | 108 // Call |functor| asynchronously on |thread|, calling |callback| when done. |
| 111 // Overloaded for void return. | 109 // Overloaded for void return. |
| 112 template <class ReturnT, class FunctorT, class HostT> | 110 template <class ReturnT, class FunctorT, class HostT> |
| 113 void AsyncInvoke(Thread* thread, | 111 void AsyncInvoke(Thread* thread, |
| 114 const FunctorT& functor, | 112 const FunctorT& functor, |
| 115 void (HostT::*callback)(), | 113 void (HostT::*callback)(), |
| 116 HostT* callback_host, | 114 HostT* callback_host, |
| 117 uint32 id = 0) { | 115 uint32_t id = 0) { |
| 118 scoped_refptr<AsyncClosure> closure( | 116 scoped_refptr<AsyncClosure> closure( |
| 119 new RefCountedObject<NotifyingAsyncClosure<void, FunctorT, HostT> >( | 117 new RefCountedObject<NotifyingAsyncClosure<void, FunctorT, HostT> >( |
| 120 this, Thread::Current(), functor, callback, callback_host)); | 118 this, Thread::Current(), functor, callback, callback_host)); |
| 121 DoInvoke(thread, closure, id); | 119 DoInvoke(thread, closure, id); |
| 122 } | 120 } |
| 123 | 121 |
| 124 // Synchronously execute on |thread| all outstanding calls we own | 122 // Synchronously execute on |thread| all outstanding calls we own |
| 125 // that are pending on |thread|, and wait for calls to complete | 123 // that are pending on |thread|, and wait for calls to complete |
| 126 // before returning. Optionally filter by message id. | 124 // before returning. Optionally filter by message id. |
| 127 // The destructor will not wait for outstanding calls, so if that | 125 // The destructor will not wait for outstanding calls, so if that |
| 128 // behavior is desired, call Flush() before destroying this object. | 126 // behavior is desired, call Flush() before destroying this object. |
| 129 void Flush(Thread* thread, uint32 id = MQID_ANY); | 127 void Flush(Thread* thread, uint32_t id = MQID_ANY); |
| 130 | 128 |
| 131 // Signaled when this object is destructed. | 129 // Signaled when this object is destructed. |
| 132 sigslot::signal0<> SignalInvokerDestroyed; | 130 sigslot::signal0<> SignalInvokerDestroyed; |
| 133 | 131 |
| 134 private: | 132 private: |
| 135 void OnMessage(Message* msg) override; | 133 void OnMessage(Message* msg) override; |
| 136 void DoInvoke(Thread* thread, const scoped_refptr<AsyncClosure>& closure, | 134 void DoInvoke(Thread* thread, |
| 137 uint32 id); | 135 const scoped_refptr<AsyncClosure>& closure, |
| 136 uint32_t id); |
| 138 void DoInvokeDelayed(Thread* thread, | 137 void DoInvokeDelayed(Thread* thread, |
| 139 const scoped_refptr<AsyncClosure>& closure, | 138 const scoped_refptr<AsyncClosure>& closure, |
| 140 uint32 delay_ms, | 139 uint32_t delay_ms, |
| 141 uint32 id); | 140 uint32_t id); |
| 142 bool destroying_; | 141 bool destroying_; |
| 143 | 142 |
| 144 RTC_DISALLOW_COPY_AND_ASSIGN(AsyncInvoker); | 143 RTC_DISALLOW_COPY_AND_ASSIGN(AsyncInvoker); |
| 145 }; | 144 }; |
| 146 | 145 |
| 147 // Similar to AsyncInvoker, but guards against the Thread being destroyed while | 146 // Similar to AsyncInvoker, but guards against the Thread being destroyed while |
| 148 // there are outstanding dangling pointers to it. It will connect to the current | 147 // there are outstanding dangling pointers to it. It will connect to the current |
| 149 // thread in the constructor, and will get notified when that thread is | 148 // thread in the constructor, and will get notified when that thread is |
| 150 // destroyed. After GuardedAsyncInvoker is constructed, it can be used from | 149 // destroyed. After GuardedAsyncInvoker is constructed, it can be used from |
| 151 // other threads to post functors to the thread it was constructed on. If that | 150 // other threads to post functors to the thread it was constructed on. If that |
| 152 // thread dies, any further calls to AsyncInvoke() will be safely ignored. | 151 // thread dies, any further calls to AsyncInvoke() will be safely ignored. |
| 153 class GuardedAsyncInvoker : public sigslot::has_slots<> { | 152 class GuardedAsyncInvoker : public sigslot::has_slots<> { |
| 154 public: | 153 public: |
| 155 GuardedAsyncInvoker(); | 154 GuardedAsyncInvoker(); |
| 156 ~GuardedAsyncInvoker() override; | 155 ~GuardedAsyncInvoker() override; |
| 157 | 156 |
| 158 // Synchronously execute all outstanding calls we own, and wait for calls to | 157 // Synchronously execute all outstanding calls we own, and wait for calls to |
| 159 // complete before returning. Optionally filter by message id. The destructor | 158 // complete before returning. Optionally filter by message id. The destructor |
| 160 // will not wait for outstanding calls, so if that behavior is desired, call | 159 // will not wait for outstanding calls, so if that behavior is desired, call |
| 161 // Flush() first. Returns false if the thread has died. | 160 // Flush() first. Returns false if the thread has died. |
| 162 bool Flush(uint32 id = MQID_ANY); | 161 bool Flush(uint32_t id = MQID_ANY); |
| 163 | 162 |
| 164 // Call |functor| asynchronously with no callback upon completion. Returns | 163 // Call |functor| asynchronously with no callback upon completion. Returns |
| 165 // immediately. Returns false if the thread has died. | 164 // immediately. Returns false if the thread has died. |
| 166 template <class ReturnT, class FunctorT> | 165 template <class ReturnT, class FunctorT> |
| 167 bool AsyncInvoke(const FunctorT& functor, uint32 id = 0) { | 166 bool AsyncInvoke(const FunctorT& functor, uint32_t id = 0) { |
| 168 rtc::CritScope cs(&crit_); | 167 rtc::CritScope cs(&crit_); |
| 169 if (thread_ == nullptr) | 168 if (thread_ == nullptr) |
| 170 return false; | 169 return false; |
| 171 invoker_.AsyncInvoke<ReturnT, FunctorT>(thread_, functor, id); | 170 invoker_.AsyncInvoke<ReturnT, FunctorT>(thread_, functor, id); |
| 172 return true; | 171 return true; |
| 173 } | 172 } |
| 174 | 173 |
| 175 // Call |functor| asynchronously with |delay_ms|, with no callback upon | 174 // Call |functor| asynchronously with |delay_ms|, with no callback upon |
| 176 // completion. Returns immediately. Returns false if the thread has died. | 175 // completion. Returns immediately. Returns false if the thread has died. |
| 177 template <class ReturnT, class FunctorT> | 176 template <class ReturnT, class FunctorT> |
| 178 bool AsyncInvokeDelayed(const FunctorT& functor, | 177 bool AsyncInvokeDelayed(const FunctorT& functor, |
| 179 uint32 delay_ms, | 178 uint32_t delay_ms, |
| 180 uint32 id = 0) { | 179 uint32_t id = 0) { |
| 181 rtc::CritScope cs(&crit_); | 180 rtc::CritScope cs(&crit_); |
| 182 if (thread_ == nullptr) | 181 if (thread_ == nullptr) |
| 183 return false; | 182 return false; |
| 184 invoker_.AsyncInvokeDelayed<ReturnT, FunctorT>(thread_, functor, delay_ms, | 183 invoker_.AsyncInvokeDelayed<ReturnT, FunctorT>(thread_, functor, delay_ms, |
| 185 id); | 184 id); |
| 186 return true; | 185 return true; |
| 187 } | 186 } |
| 188 | 187 |
| 189 // Call |functor| asynchronously, calling |callback| when done. Returns false | 188 // Call |functor| asynchronously, calling |callback| when done. Returns false |
| 190 // if the thread has died. | 189 // if the thread has died. |
| 191 template <class ReturnT, class FunctorT, class HostT> | 190 template <class ReturnT, class FunctorT, class HostT> |
| 192 bool AsyncInvoke(const FunctorT& functor, | 191 bool AsyncInvoke(const FunctorT& functor, |
| 193 void (HostT::*callback)(ReturnT), | 192 void (HostT::*callback)(ReturnT), |
| 194 HostT* callback_host, | 193 HostT* callback_host, |
| 195 uint32 id = 0) { | 194 uint32_t id = 0) { |
| 196 rtc::CritScope cs(&crit_); | 195 rtc::CritScope cs(&crit_); |
| 197 if (thread_ == nullptr) | 196 if (thread_ == nullptr) |
| 198 return false; | 197 return false; |
| 199 invoker_.AsyncInvoke<ReturnT, FunctorT, HostT>(thread_, functor, callback, | 198 invoker_.AsyncInvoke<ReturnT, FunctorT, HostT>(thread_, functor, callback, |
| 200 callback_host, id); | 199 callback_host, id); |
| 201 return true; | 200 return true; |
| 202 } | 201 } |
| 203 | 202 |
| 204 // Call |functor| asynchronously calling |callback| when done. Overloaded for | 203 // Call |functor| asynchronously calling |callback| when done. Overloaded for |
| 205 // void return. Returns false if the thread has died. | 204 // void return. Returns false if the thread has died. |
| 206 template <class ReturnT, class FunctorT, class HostT> | 205 template <class ReturnT, class FunctorT, class HostT> |
| 207 bool AsyncInvoke(const FunctorT& functor, | 206 bool AsyncInvoke(const FunctorT& functor, |
| 208 void (HostT::*callback)(), | 207 void (HostT::*callback)(), |
| 209 HostT* callback_host, | 208 HostT* callback_host, |
| 210 uint32 id = 0) { | 209 uint32_t id = 0) { |
| 211 rtc::CritScope cs(&crit_); | 210 rtc::CritScope cs(&crit_); |
| 212 if (thread_ == nullptr) | 211 if (thread_ == nullptr) |
| 213 return false; | 212 return false; |
| 214 invoker_.AsyncInvoke<ReturnT, FunctorT, HostT>(thread_, functor, callback, | 213 invoker_.AsyncInvoke<ReturnT, FunctorT, HostT>(thread_, functor, callback, |
| 215 callback_host, id); | 214 callback_host, id); |
| 216 return true; | 215 return true; |
| 217 } | 216 } |
| 218 | 217 |
| 219 private: | 218 private: |
| 220 // Callback when |thread_| is destroyed. | 219 // Callback when |thread_| is destroyed. |
| 221 void ThreadDestroyed(); | 220 void ThreadDestroyed(); |
| 222 | 221 |
| 223 CriticalSection crit_; | 222 CriticalSection crit_; |
| 224 Thread* thread_ GUARDED_BY(crit_); | 223 Thread* thread_ GUARDED_BY(crit_); |
| 225 AsyncInvoker invoker_ GUARDED_BY(crit_); | 224 AsyncInvoker invoker_ GUARDED_BY(crit_); |
| 226 }; | 225 }; |
| 227 | 226 |
| 228 } // namespace rtc | 227 } // namespace rtc |
| 229 | 228 |
| 230 #endif // WEBRTC_BASE_ASYNCINVOKER_H_ | 229 #endif // WEBRTC_BASE_ASYNCINVOKER_H_ |
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