/*******************************************************************************
* BEvent.h Event class
* T.Barnaby, BEAM Ltd, 2005-07-08
* Copyright (c) 2005 All Right Reserved, Beam Ltd, http://www.beam.ltd.uk
*******************************************************************************
*/
#ifndef BEvent_H
#define BEvent_H 1
#include <BTypes.h>
#include <BQueue.h>
enum BEventType { BEventTypeNone = 0 };
class BEvent {
public:
BEvent(BUInt32 type = BEventTypeNone, BUInt32 arg = 0);
BUInt32 type();
BUInt32 arg();
private:
BUInt32 otype; ///< The events type
BUInt32 oarg; ///< The events argument
};
/// \brief This class provides an interface for sending simple integer events via a BQueue.
typedef BQueue<BEvent> BEventQueue;
/// \brief This class provides an interface for sending simple integer events via a pipe file descriptor
class BEventPipe {
public:
BEventPipe();
~BEventPipe();
void clear(); ///< Clear events pending
int getFd();
BUInt writeAvailable() const;
BError write(const BEvent& event, BTimeout timeout = BTimeoutForever); ///< Append an item onto the queue
BUInt readAvailable() const;
BError read(BEvent& event, BTimeout timeout = BTimeoutForever); ///< Get an item from the queue
private:
int ofds[2]; ///< File descriptors for pipe
};
#endif