BasicTaskScheduler0 Class Reference

#include <BasicUsageEnvironment0.hh>

Inheritance diagram for BasicTaskScheduler0:

[legend]Collaboration diagram for BasicTaskScheduler0:

[legend]

Public Types
typedef void	BackgroundHandlerProc (void *clientData, int mask)
Public Member Functions
virtual	~BasicTaskScheduler0 ()
virtual void	SingleStep (unsigned maxDelayTime=0)=0
virtual TaskToken	scheduleDelayedTask (int64_t microseconds, TaskFunc *proc, void *clientData)
virtual void	unscheduleDelayedTask (TaskToken &prevTask)
virtual void	doEventLoop (char *watchVariable)
virtual void	rescheduleDelayedTask (TaskToken &task, int64_t microseconds, TaskFunc *proc, void *clientData)
virtual void	turnOnBackgroundReadHandling (int socketNum, BackgroundHandlerProc *handlerProc, void *clientData)=0
virtual void	turnOffBackgroundReadHandling (int socketNum)=0
Protected Member Functions
	BasicTaskScheduler0 ()
Protected Attributes
DelayQueue	fDelayQueue
HandlerSet *	fReadHandlers
int	fLastHandledSocketNum

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Detailed Description

Definition at line 72 of file BasicUsageEnvironment0.hh.

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Member Typedef Documentation

typedef void TaskScheduler::BackgroundHandlerProc(void *clientData, int mask) [inherited]

Definition at line 121 of file UsageEnvironment.hh.

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Constructor & Destructor Documentation

BasicTaskScheduler0::~BasicTaskScheduler0

(

)

[virtual]

Definition at line 51 of file BasicTaskScheduler0.cpp.

References fReadHandlers.

                                          {
  delete fReadHandlers;
}

BasicTaskScheduler0::BasicTaskScheduler0

(

)

[protected]

Definition at line 46 of file BasicTaskScheduler0.cpp.

References fReadHandlers.

  : fLastHandledSocketNum(-1) {
  fReadHandlers = new HandlerSet;
}

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Member Function Documentation

virtual void BasicTaskScheduler0::SingleStep

(

unsigned

maxDelayTime = 0

)

[pure virtual]

Implemented in BasicTaskScheduler.

Referenced by doEventLoop().

TaskToken BasicTaskScheduler0::scheduleDelayedTask	(	int64_t	microseconds,
		TaskFunc *	proc,
		void *	clientData
	)			[virtual]

Implements TaskScheduler.

Definition at line 55 of file BasicTaskScheduler0.cpp.

References DelayQueue::addEntry(), fDelayQueue, and DelayQueueEntry::token().

                                                                   {
  if (microseconds < 0) microseconds = 0;
  DelayInterval timeToDelay((long)(microseconds/1000000), (long)(microseconds%1000000));
  AlarmHandler* alarmHandler = new AlarmHandler(proc, clientData, timeToDelay);
  fDelayQueue.addEntry(alarmHandler);

  return (void*)(alarmHandler->token()); 
}

void BasicTaskScheduler0::unscheduleDelayedTask

(

TaskToken &

prevTask

)

[virtual]

Implements TaskScheduler.

Definition at line 66 of file BasicTaskScheduler0.cpp.

References fDelayQueue, NULL, and DelayQueue::removeEntry().

                                                                   {
  DelayQueueEntry* alarmHandler = fDelayQueue.removeEntry((long)prevTask);
  prevTask = NULL;
  delete alarmHandler;
}

void BasicTaskScheduler0::doEventLoop

(

char *

watchVariable

)

[virtual]

Implements TaskScheduler.

Definition at line 72 of file BasicTaskScheduler0.cpp.

References NULL, and SingleStep().

                                                         {
  // Repeatedly loop, handling readble sockets and timed events:
  while (1) {
    if (watchVariable != NULL && *watchVariable != 0) break;
    SingleStep();
  }
}

void TaskScheduler::rescheduleDelayedTask	(	TaskToken &	task,
		int64_t	microseconds,
		TaskFunc *	proc,
		void *	clientData
	)			[virtual, inherited]

Definition at line 40 of file UsageEnvironment.cpp.

References TaskScheduler::scheduleDelayedTask(), and TaskScheduler::unscheduleDelayedTask().

Referenced by RTSPServer::RTSPClientSession::noteLiveness().

                                                            {
  unscheduleDelayedTask(task);
  task = scheduleDelayedTask(microseconds, proc, clientData);
}

virtual void TaskScheduler::turnOnBackgroundReadHandling	(	int	socketNum,
		BackgroundHandlerProc *	handlerProc,
		void *	clientData
	)			[pure virtual, inherited]

Referenced by ByteStreamFileSource::doGetNextFrame(), BasicUDPSource::doGetNextFrame(), RTSPOverHTTPServer::HTTPClientConnection::HTTPClientConnection(), SIPClient::invite1(), RTSPClient::playMediaSession(), RTSPServer::RTSPClientSession::RTSPClientSession(), RTSPOverHTTPServer::RTSPOverHTTPServer(), and RTSPServer::RTSPServer().

virtual void TaskScheduler::turnOffBackgroundReadHandling

(

int

socketNum

)

[pure virtual, inherited]

Implemented in BasicTaskScheduler.

Referenced by SocketDescriptor::deregisterRTPInterface(), ByteStreamFileSource::doStopGettingFrames(), BasicUDPSource::doStopGettingFrames(), RTSPClient::incomingRequestHandler1(), SIPClient::invite1(), RTPInterface::stopNetworkReading(), SocketDescriptor::tcpReadHandler(), BasicUDPSource::~BasicUDPSource(), ByteStreamFileSource::~ByteStreamFileSource(), RTSPOverHTTPServer::HTTPClientConnection::~HTTPClientConnection(), RTSPClient::~RTSPClient(), RTSPServer::RTSPClientSession::~RTSPClientSession(), and RTSPServer::~RTSPServer().

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Field Documentation

DelayQueue BasicTaskScheduler0::fDelayQueue [protected]

Definition at line 94 of file BasicUsageEnvironment0.hh.

Referenced by scheduleDelayedTask(), BasicTaskScheduler::SingleStep(), and unscheduleDelayedTask().

HandlerSet* BasicTaskScheduler0::fReadHandlers [protected]

Definition at line 97 of file BasicUsageEnvironment0.hh.

Referenced by BasicTaskScheduler0(), BasicTaskScheduler::SingleStep(), BasicTaskScheduler::turnOffBackgroundReadHandling(), BasicTaskScheduler::turnOnBackgroundReadHandling(), and ~BasicTaskScheduler0().

int BasicTaskScheduler0::fLastHandledSocketNum [protected]

Definition at line 98 of file BasicUsageEnvironment0.hh.

Referenced by BasicTaskScheduler::SingleStep().

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The documentation for this class was generated from the following files:

• BasicUsageEnvironment/include/BasicUsageEnvironment0.hh
• BasicUsageEnvironment/BasicTaskScheduler0.cpp

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