| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "mojo/edk/system/simple_dispatcher.h" |
| |
| #include "base/logging.h" |
| |
| namespace mojo { |
| namespace system { |
| |
| SimpleDispatcher::SimpleDispatcher() { |
| } |
| |
| SimpleDispatcher::~SimpleDispatcher() { |
| } |
| |
| void SimpleDispatcher::HandleSignalsStateChangedNoLock() { |
| lock().AssertAcquired(); |
| waiter_list_.AwakeWaitersForStateChange(GetHandleSignalsStateImplNoLock()); |
| } |
| |
| void SimpleDispatcher::CancelAllWaitersNoLock() { |
| lock().AssertAcquired(); |
| waiter_list_.CancelAllWaiters(); |
| } |
| |
| MojoResult SimpleDispatcher::AddWaiterImplNoLock( |
| Waiter* waiter, |
| MojoHandleSignals signals, |
| uint32_t context, |
| HandleSignalsState* signals_state) { |
| lock().AssertAcquired(); |
| |
| HandleSignalsState state(GetHandleSignalsStateImplNoLock()); |
| if (state.satisfies(signals)) { |
| if (signals_state) |
| *signals_state = state; |
| return MOJO_RESULT_ALREADY_EXISTS; |
| } |
| if (!state.can_satisfy(signals)) { |
| if (signals_state) |
| *signals_state = state; |
| return MOJO_RESULT_FAILED_PRECONDITION; |
| } |
| |
| waiter_list_.AddWaiter(waiter, signals, context); |
| return MOJO_RESULT_OK; |
| } |
| |
| void SimpleDispatcher::RemoveWaiterImplNoLock( |
| Waiter* waiter, |
| HandleSignalsState* signals_state) { |
| lock().AssertAcquired(); |
| waiter_list_.RemoveWaiter(waiter); |
| if (signals_state) |
| *signals_state = GetHandleSignalsStateImplNoLock(); |
| } |
| |
| } // namespace system |
| } // namespace mojo |