Semaphore Class Reference

Public Member Functions
	Semaphore (unsigned int count=1)
	~Semaphore ()
void	acquire ()
bool	tryAcquire ()
void	release ()

Detailed Description

Limits number of threads that can access the shared resource simultaneously.

Definition at line 32 of file Semaphore.h.

Constructor & Destructor Documentation

Semaphore()

Semaphore

(

unsigned int

count = 1

)

Constructor.

The state of the semaphore is signaled when its counter is greater than zero and non-signaled when it is zero.

Parameters

count

the counter value.

~Semaphore()

~Semaphore

(

)

Member Function Documentation

acquire()

void acquire

(

)

Decrements the counter by one.

If the counter is already zero, blocks the thread until the counter becomes greater than zero.

release()

void release

(

)

Increments the counter by one.

tryAcquire()

bool tryAcquire

(

)

Tries to decrement the counter by one.

Returns

‘false’ if the counter is already zero, / otherwise - true.