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1 // Copyright 2014 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_SYSTEM_HANDLE_SIGNALS_STATE_H_ | |
6 #define MOJO_SYSTEM_HANDLE_SIGNALS_STATE_H_ | |
7 | |
8 #include "base/macros.h" | |
9 #include "mojo/public/c/system/types.h" | |
10 #include "mojo/system/system_impl_export.h" | |
11 | |
12 namespace mojo { | |
13 namespace system { | |
14 | |
15 // Just "add" some constructors and methods to the C struct | |
16 // |MojoHandleSignalsState| (for convenience). This should add no overhead. | |
17 struct MOJO_SYSTEM_IMPL_EXPORT HandleSignalsState | |
18 : public MojoHandleSignalsState { | |
19 HandleSignalsState() { | |
20 satisfied_signals = MOJO_HANDLE_SIGNAL_NONE; | |
21 satisfiable_signals = MOJO_HANDLE_SIGNAL_NONE; | |
22 } | |
23 HandleSignalsState(MojoHandleSignals satisfied, | |
24 MojoHandleSignals satisfiable) { | |
25 satisfied_signals = satisfied; | |
26 satisfiable_signals = satisfiable; | |
27 } | |
28 | |
29 bool equals(const HandleSignalsState& other) const { | |
30 return satisfied_signals == other.satisfied_signals && | |
31 satisfiable_signals == other.satisfiable_signals; | |
32 } | |
33 | |
34 bool satisfies(MojoHandleSignals signals) const { | |
35 return !!(satisfied_signals & signals); | |
36 } | |
37 | |
38 bool can_satisfy(MojoHandleSignals signals) const { | |
39 return !!(satisfiable_signals & signals); | |
40 } | |
41 | |
42 // (Copy and assignment allowed.) | |
43 }; | |
44 static_assert(sizeof(HandleSignalsState) == sizeof(MojoHandleSignalsState), | |
45 "HandleSignalsState should add no overhead"); | |
46 | |
47 } // namespace system | |
48 } // namespace mojo | |
49 | |
50 #endif // MOJO_SYSTEM_HANDLE_SIGNALS_STATE_H_ | |
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