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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.
#ifndef MOJO_EDK_SYSTEM_AWAKABLE_LIST_H_
#define MOJO_EDK_SYSTEM_AWAKABLE_LIST_H_
#include <stdint.h>
#include <list>
#include "base/macros.h"
#include "mojo/edk/system/system_impl_export.h"
#include "mojo/public/c/system/types.h"
namespace mojo {
namespace system {
class Awakable;
struct HandleSignalsState;
// |AwakableList| tracks all the |Waiter|s that are waiting on a given
// handle/|Dispatcher|. There should be a |AwakableList| for each handle that
// can be waited on (in any way). In the simple case, the |AwakableList| is
// owned by the |Dispatcher|, whereas in more complex cases it is owned by the
// secondary object (see simple_dispatcher.* and the explanatory comment in
// core.cc). This class is thread-unsafe (all concurrent access must be
// protected by some lock).
class MOJO_SYSTEM_IMPL_EXPORT AwakableList {
public:
AwakableList();
~AwakableList();
void AwakeForStateChange(const HandleSignalsState& state);
void CancelAll();
void Add(Awakable* awakable, MojoHandleSignals signals, uint32_t context);
void Remove(Awakable* awakable);
private:
struct AwakeInfo {
AwakeInfo(Awakable* awakable, MojoHandleSignals signals, uint32_t context)
: awakable(awakable), signals(signals), context(context) {}
Awakable* awakable;
MojoHandleSignals signals;
uint32_t context;
};
typedef std::list<AwakeInfo> AwakeInfoList;
AwakeInfoList awakables_;
DISALLOW_COPY_AND_ASSIGN(AwakableList);
};
} // namespace system
} // namespace mojo
#endif // MOJO_EDK_SYSTEM_AWAKABLE_LIST_H_
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