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/*
* barrier -- mouse and keyboard sharing utility
* Copyright (C) 2012-2016 Symless Ltd.
* Copyright (C) 2004 Chris Schoeneman
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* found in the file LICENSE that should have accompanied this file.
*
* This package is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include "mt/CondVar.h"
#include "arch/IArchMultithread.h"
#include "base/IEventQueue.h"
#include "base/Event.h"
#include "base/PriorityQueue.h"
#include "base/Stopwatch.h"
#include "common/stdmap.h"
#include "common/stdset.h"
#include "base/NonBlockingStream.h"
#include <mutex>
#include <queue>
//! Event queue
/*!
An event queue that implements the platform independent parts and
delegates the platform dependent parts to a subclass.
*/
class EventQueue : public IEventQueue {
public:
EventQueue();
virtual ~EventQueue();
// IEventQueue overrides
virtual void loop();
virtual void adoptBuffer(IEventQueueBuffer*);
virtual bool getEvent(Event& event, double timeout = -1.0);
virtual bool dispatchEvent(const Event& event);
virtual void addEvent(const Event& event);
virtual EventQueueTimer*
newTimer(double duration, void* target);
virtual EventQueueTimer*
newOneShotTimer(double duration, void* target);
virtual void deleteTimer(EventQueueTimer*);
virtual void adoptHandler(Event::Type type,
void* target, IEventJob* handler);
virtual void removeHandler(Event::Type type, void* target);
virtual void removeHandlers(void* target);
virtual Event::Type
registerTypeOnce(Event::Type& type, const char* name);
virtual bool isEmpty() const;
virtual IEventJob* getHandler(Event::Type type, void* target) const;
virtual const char* getTypeName(Event::Type type);
virtual Event::Type
getRegisteredType(const String& name) const;
void* getSystemTarget();
virtual void waitForReady() const;
private:
UInt32 saveEvent(const Event& event);
Event removeEvent(UInt32 eventID);
bool hasTimerExpired(Event& event);
double getNextTimerTimeout() const;
void addEventToBuffer(const Event& event);
bool parent_requests_shutdown() const;
private:
class Timer {
public:
Timer(EventQueueTimer*, double timeout, double initialTime,
void* target, bool oneShot);
~Timer();
void reset();
Timer& operator-=(double);
operator double() const;
bool isOneShot() const;
EventQueueTimer*
getTimer() const;
void* getTarget() const;
void fillEvent(TimerEvent&) const;
bool operator<(const Timer&) const;
private:
EventQueueTimer* m_timer;
double m_timeout;
void* m_target;
bool m_oneShot;
double m_time;
};
typedef std::set<EventQueueTimer*> Timers;
typedef PriorityQueue<Timer> TimerQueue;
typedef std::map<UInt32, Event> EventTable;
typedef std::vector<UInt32> EventIDList;
typedef std::map<Event::Type, const char*> TypeMap;
typedef std::map<String, Event::Type> NameMap;
typedef std::map<Event::Type, IEventJob*> TypeHandlerTable;
typedef std::map<void*, TypeHandlerTable> HandlerTable;
int m_systemTarget;
mutable std::mutex m_mutex;
// registered events
Event::Type m_nextType;
TypeMap m_typeMap;
NameMap m_nameMap;
// buffer of events
IEventQueueBuffer* m_buffer;
// saved events
EventTable m_events;
EventIDList m_oldEventIDs;
// timers
Stopwatch m_time;
Timers m_timers;
TimerQueue m_timerQueue;
TimerEvent m_timerEvent;
// event handlers
HandlerTable m_handlers;
public:
//
// Event type providers.
//
ClientEvents& forClient();
IStreamEvents& forIStream();
IpcClientEvents& forIpcClient();
IpcClientProxyEvents& forIpcClientProxy();
IpcServerEvents& forIpcServer();
IpcServerProxyEvents& forIpcServerProxy();
IDataSocketEvents& forIDataSocket();
IListenSocketEvents& forIListenSocket();
ISocketEvents& forISocket();
OSXScreenEvents& forOSXScreen();
ClientListenerEvents& forClientListener();
ClientProxyEvents& forClientProxy();
ClientProxyUnknownEvents& forClientProxyUnknown();
ServerEvents& forServer();
ServerAppEvents& forServerApp();
IKeyStateEvents& forIKeyState();
IPrimaryScreenEvents& forIPrimaryScreen();
IScreenEvents& forIScreen();
ClipboardEvents& forClipboard();
FileEvents& forFile();
private:
ClientEvents* m_typesForClient;
IStreamEvents* m_typesForIStream;
IpcClientEvents* m_typesForIpcClient;
IpcClientProxyEvents* m_typesForIpcClientProxy;
IpcServerEvents* m_typesForIpcServer;
IpcServerProxyEvents* m_typesForIpcServerProxy;
IDataSocketEvents* m_typesForIDataSocket;
IListenSocketEvents* m_typesForIListenSocket;
ISocketEvents* m_typesForISocket;
OSXScreenEvents* m_typesForOSXScreen;
ClientListenerEvents* m_typesForClientListener;
ClientProxyEvents* m_typesForClientProxy;
ClientProxyUnknownEvents* m_typesForClientProxyUnknown;
ServerEvents* m_typesForServer;
ServerAppEvents* m_typesForServerApp;
IKeyStateEvents* m_typesForIKeyState;
IPrimaryScreenEvents* m_typesForIPrimaryScreen;
IScreenEvents* m_typesForIScreen;
ClipboardEvents* m_typesForClipboard;
FileEvents* m_typesForFile;
Mutex* m_readyMutex;
CondVar<bool>* m_readyCondVar;
std::queue<Event> m_pending;
NonBlockingStream m_parentStream;
};
#define EVENT_TYPE_ACCESSOR(type_) \
type_##Events& \
EventQueue::for##type_() { \
if (m_typesFor##type_ == NULL) { \
m_typesFor##type_ = new type_##Events(); \
m_typesFor##type_->setEvents(dynamic_cast<IEventQueue*>(this)); \
} \
return *m_typesFor##type_; \
}
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