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| 1 // Copyright 2013 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 #ifndef MOJO_EDK_SYSTEM_SIMPLE_DISPATCHER_H_ | |
| 6 #define MOJO_EDK_SYSTEM_SIMPLE_DISPATCHER_H_ | |
| 7 | |
| 8 #include <list> | |
| 9 | |
| 10 #include "base/macros.h" | |
| 11 #include "mojo/edk/system/awakable_list.h" | |
| 12 #include "mojo/edk/system/dispatcher.h" | |
| 13 #include "mojo/edk/system/system_impl_export.h" | |
| 14 | |
| 15 namespace mojo { | |
| 16 namespace system { | |
| 17 | |
| 18 // A base class for simple dispatchers. "Simple" means that there's a one-to-one | |
| 19 // correspondence between handles and dispatchers (see the explanatory comment | |
| 20 // in core.cc). This class implements the standard waiter-signalling mechanism | |
| 21 // in that case. | |
| 22 class MOJO_SYSTEM_IMPL_EXPORT SimpleDispatcher : public Dispatcher { | |
| 23 protected: | |
| 24 SimpleDispatcher(); | |
| 25 ~SimpleDispatcher() override; | |
| 26 | |
| 27 // To be called by subclasses when the state changes (so | |
| 28 // |GetHandleSignalsStateImplNoLock()| should be checked again). Must be | |
| 29 // called under lock. | |
| 30 void HandleSignalsStateChangedNoLock(); | |
| 31 | |
| 32 // |Dispatcher| protected methods: | |
| 33 void CancelAllAwakablesNoLock() override; | |
| 34 MojoResult AddAwakableImplNoLock(Awakable* awakable, | |
| 35 MojoHandleSignals signals, | |
| 36 uint32_t context, | |
| 37 HandleSignalsState* signals_state) override; | |
| 38 void RemoveAwakableImplNoLock(Awakable* awakable, | |
| 39 HandleSignalsState* signals_state) override; | |
| 40 | |
| 41 private: | |
| 42 // Protected by |lock()|: | |
| 43 AwakableList awakable_list_; | |
| 44 | |
| 45 DISALLOW_COPY_AND_ASSIGN(SimpleDispatcher); | |
| 46 }; | |
| 47 | |
| 48 } // namespace system | |
| 49 } // namespace mojo | |
| 50 | |
| 51 #endif // MOJO_EDK_SYSTEM_SIMPLE_DISPATCHER_H_ | |
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