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// 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
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