TeSemaphore Class Reference

Inter process communication semaphore. More...

#include <TeSemaphore.h>

List of all members.

Public Member Functions
	TeSemaphore (unsigned int count)
	Creates an unnamed semaphore.
	TeSemaphore (unsigned int count, const std::string &semName)
	Creates an named semaphore.
	~TeSemaphore ()
	Default destructor.
void	post ()
	Increments the semaphore's counter.
void	wait ()
	Wait the semaphore's counter to become zero.
bool	wait (unsigned int waitingTime)
	Wait the semaphore's counter to become zero.
Protected Attributes
std::string	semName_

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Detailed Description

Inter process communication semaphore.

Author:

Emiliano F. Castejon <castejon@dpi.inpe.br>

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Constructor & Destructor Documentation

TeSemaphore::TeSemaphore

(

unsigned int

count

)

Creates an unnamed semaphore.

Parameters:

count

Semaphore initial counter value.

TeSemaphore::TeSemaphore	(	unsigned int	count,
		const std::string &	semName
	)

Creates an named semaphore.

Parameters:

count	Semaphore initial counter value.
semName	Semaphore name.

Note:

Creates a new semaphore or opens an existing semaphore that can be shared among processes.

TeSemaphore::~TeSemaphore

(

)

Default destructor.

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Member Function Documentation

void TeSemaphore::post

(

)

[inline]

Increments the semaphore's counter.

bool TeSemaphore::wait

(

unsigned int

waitingTime

)

Wait the semaphore's counter to become zero.

Parameters:

waitingTime

The maximum waiting time in milliseconds ( 0 == INFINITE ).

Returns:

true if the semaphore's counter is zero or false if the waiting time has finished or an error occurred.

void TeSemaphore::wait

(

)

[inline]

Wait the semaphore's counter to become zero.

Note:

If the semaphore's value is greater than zero, then the decrement proceeds, and the function returns, immediately. If the semaphore currently has the value zero, then the call blocks until either it becomes possible to perform the decrement.

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Member Data Documentation

std::string TeSemaphore::semName_ [protected]

This instance name

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

• E:/Projetos_Primeiro_Semestre_2012/TerraView/terralib/src/terralib/kernel/TeSemaphore.h
• E:/Projetos_Primeiro_Semestre_2012/TerraView/terralib/src/terralib/kernel/TeSemaphore.cpp