USemaphore Class Reference

#include <USemaphore.h>

List of all members.

Public Member Functions
	USemaphore (int initValue=0)
void	acquire (int n=1)
void	release (int n=1)
int	value ()

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Detailed Description

A semaphore class.

On an acquire() call, the calling thread is blocked if the USemaphore's value is <= 0. It is unblocked when release() is called. The function acquire() decreases by 1 (default) the semaphore's value and release() increases it by 1 (default).

Example:

 USemaphore s;
 s.acquire(); // Will wait until s.release() is called by another thread.

See also:

UMutex

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Constructor & Destructor Documentation

USemaphore::USemaphore

(

int

initValue = 0

)

[inline]

The constructor. The semaphore waits on acquire() when its value is <= 0.

Parameters:

n	number to initialize

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Member Function Documentation

void USemaphore::acquire

(

int

n = 1

)

[inline]

Acquire the semaphore. If semaphore's value is <=0, the calling thread will wait until the count acquired is released.

See also:

release()

Parameters:

n	number to acquire

void USemaphore::release

(

int

n = 1

)

[inline]

Release the semaphore, increasing its value by 1 and signaling waiting threads (which called acquire()).

int USemaphore::value

(

)

[inline]

Get the USempahore's value.

Returns:

the semaphore's value

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

• include/utilite/USemaphore.h