bslmt::Semaphore Class Reference

#include <bslmt_semaphore.h>

Detailed Description

This class implements a portable semaphore type for thread synchronization. It forwards all requests to an appropriate platform-specific implementation.

See bslmt_semaphore

Public Member Functions
	Semaphore ()
	Semaphore (int count)
	~Semaphore ()
void	post ()
void	post (int value)
int	tryWait ()
void	wait ()
int	getValue () const

Constructor & Destructor Documentation

Semaphore() [1/2]

bslmt::Semaphore::Semaphore ( )

inline

Create a semaphore initially having a count of 0. This method does not return normally unless there are sufficient system resources to construct the object.

Semaphore() [2/2]

bslmt::Semaphore::Semaphore ( int  count )

inlineexplicit

Create a semaphore initially having the specified count. This method does not return normally unless there are sufficient system resources to construct the object.

~Semaphore()

bslmt::Semaphore::~Semaphore ( )

inline

Destroy this semaphore.

Member Function Documentation

getValue()

int bslmt::Semaphore::getValue ( ) const

inline

Return the value of the current count of this semaphore.

post() [1/2]

void bslmt::Semaphore::post ( )

inline

Atomically increment the count of this semaphore.

post() [2/2]

void bslmt::Semaphore::post ( int  value )

inline

Atomically increase the count of this semaphore by the specified value.

Precondition

The behavior is undefined unless value > 0.

tryWait()

int bslmt::Semaphore::tryWait ( )

inline

If the count of this semaphore is positive, atomically decrement the count and return 0; otherwise, return a non-zero value with no effect on the count.

wait()

void bslmt::Semaphore::wait ( )

inline

Block until the count of this semaphore is a positive value, then atomically decrement the count and return.

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

• bslmt_semaphore.h