Semaphore Class Reference

A user semaphore optimized for the case where we do not block. More...

#include <semaphore.h>

List of all members.

Public Member Functions
	Semaphore (unsigned cap_sm=0, bool create=false)
void	down ()
void	up ()
unsigned	sm ()

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Detailed Description

A user semaphore optimized for the case where we do not block.

This semaphore implementation breaks when threads blocking on the associated kernel semaphore can be canceled, because the kernel semaphore and the shared counter might then be out-of-sync.

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Constructor & Destructor Documentation

Semaphore::Semaphore	(	unsigned	cap_sm = 0,
		bool	create = false
	)			[inline]

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Member Function Documentation

void Semaphore::down

(

)

[inline]

unsigned Semaphore::sm

(

)

[inline]

void Semaphore::up

(

)

[inline]

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

• base/include/sys/semaphore.h