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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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