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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 #include "mojo/edk/system/simple_dispatcher.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 | |
| 9 namespace mojo { | |
| 10 namespace system { | |
| 11 | |
| 12 SimpleDispatcher::SimpleDispatcher() { | |
| 13 } | |
| 14 | |
| 15 SimpleDispatcher::~SimpleDispatcher() { | |
| 16 } | |
| 17 | |
| 18 void SimpleDispatcher::HandleSignalsStateChangedNoLock() { | |
| 19 lock().AssertAcquired(); | |
| 20 awakable_list_.AwakeForStateChange(GetHandleSignalsStateImplNoLock()); | |
| 21 } | |
| 22 | |
| 23 void SimpleDispatcher::CancelAllAwakablesNoLock() { | |
| 24 lock().AssertAcquired(); | |
| 25 awakable_list_.CancelAll(); | |
| 26 } | |
| 27 | |
| 28 MojoResult SimpleDispatcher::AddAwakableImplNoLock( | |
| 29 Awakable* awakable, | |
| 30 MojoHandleSignals signals, | |
| 31 uint32_t context, | |
| 32 HandleSignalsState* signals_state) { | |
| 33 lock().AssertAcquired(); | |
| 34 | |
| 35 HandleSignalsState state(GetHandleSignalsStateImplNoLock()); | |
| 36 if (state.satisfies(signals)) { | |
| 37 if (signals_state) | |
| 38 *signals_state = state; | |
| 39 return MOJO_RESULT_ALREADY_EXISTS; | |
| 40 } | |
| 41 if (!state.can_satisfy(signals)) { | |
| 42 if (signals_state) | |
| 43 *signals_state = state; | |
| 44 return MOJO_RESULT_FAILED_PRECONDITION; | |
| 45 } | |
| 46 | |
| 47 awakable_list_.Add(awakable, signals, context); | |
| 48 return MOJO_RESULT_OK; | |
| 49 } | |
| 50 | |
| 51 void SimpleDispatcher::RemoveAwakableImplNoLock( | |
| 52 Awakable* awakable, | |
| 53 HandleSignalsState* signals_state) { | |
| 54 lock().AssertAcquired(); | |
| 55 awakable_list_.Remove(awakable); | |
| 56 if (signals_state) | |
| 57 *signals_state = GetHandleSignalsStateImplNoLock(); | |
| 58 } | |
| 59 | |
| 60 } // namespace system | |
| 61 } // namespace mojo | |
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