AxPipe::CThreadSync Class Reference

A small collection of objects and methods for thread sync. More...

#include <CSync.h>

Collaboration diagram for AxPipe::CThreadSync:

[legend]List of all members.

Public Member Functions
	CThreadSync ()
	Initialize sync objects.
	~CThreadSync ()
	Clean up.
void	WorkStart ()
	Initiate one Work() cycle - called from outside worker thread.
void	WorkSignal ()
	Signal that we've prepared for more Work() - called from outside worker thread.
void	WorkWait ()
	Wait for more to be ready for Work() - this is called in the worker thread.
void	WorkEnd ()
	End one Work() cycle - called from the worker thread.
Private Attributes
HANDLE	m_hSemaphore
	Enable serialization of requests for processing, can't use a Mutex, as it's sometimes the same thread we need to control.
CSync	m_Work
	Signal when worker has work to do.
CSync	m_Accepted
	Signal when worker has accepted signal.

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Detailed Description

A small collection of objects and methods for thread sync.

Threads often need synchronized access to shared data, and control the the passing of the data. This class implements methods for this under a 'work' paradigm. Thread A wants to pass off a piece of work in some form of shared medium, i.e. shared memory for example, to thread B. The sequence is then: A B ... WorkWait() ... WorkStart() WorkSignal() ... WorkEnd()

The methods ensure that when WorkStart() returns, no other thread is between WorkStart() and WorkEnd(). It's also guaranteed that when WorkSignal() returns, thread B has received the signal via WorkWait(). Owneship of the shared resource passes from A to B upon return from WorkSignal() and WorkWait() respectively. Thread B relinquishes it's hold, upon call to WorkEnd(), and as previously noted Thread A get's ownership upon return of WorkStart().

Definition at line 75 of file CSync.h.

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

• CSync.h
• CSync.cpp

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