System::Semaphore Class Reference

Semaphore - a general synchronization mechanism. More...

#include <B2BITS_Semaphore.h>

Public Member Functions
void	post ()
	Unlocks the semaphore.
	Semaphore ()
	Constructor.
	Semaphore (int aValue)
	Constructor.
void	wait ()
	Locks the semaphore.
	~Semaphore ()
	Destructor.

Detailed Description

Semaphore - a general synchronization mechanism.

Constructor & Destructor Documentation

Semaphore() [1/2]

System::Semaphore::Semaphore

(

)

Constructor.

Sets the semaphore's value to 0.

Semaphore() [2/2]

System::Semaphore::Semaphore

(

int

aValue

)

Constructor.

Sets the semaphore to the given value.

Parameters

aValue

Value to initialize semaphore with.

~Semaphore()

System::Semaphore::~Semaphore

(

)

Destructor.

Member Function Documentation

post()

void System::Semaphore::post ( )

inline

Unlocks the semaphore.

If the semaphore value resulting from this operation is positive, then no threads were blocked waiting for the semaphore to become unlocked; the semaphore value is simply incremented.

If the value of the semaphore resulting from this operation is 0, then one of the threads blocked waiting for the semaphore will be allowed to return successfully from its call to wait().

This method is reentrant with respect to signals and may be invoked from a signal-catching function.

wait()

void System::Semaphore::wait ( )

inline

Locks the semaphore.

If the semaphore value is currently zero, then the calling thread will not return from this method until it either locks the semaphore or the call is interrupted by a signal.