FX::FXSemaphore Class Reference

A semaphore allows for protection of a resource that can be accessed by a fixed number of simultaneous threads. More...

#include <FXSemaphore.h>

List of all members.

Public Member Functions
	FXSemaphore (FXint initial=1)
	Initialize semaphore with given count.
FXint	value () const
	Get semaphore value.
void	wait ()
	Decrement semaphore, waiting if count is zero.
FXbool	trywait ()
	Decrement semaphore; returning false if count is zero.
void	post ()
	Increment semaphore.
	~FXSemaphore ()
	Delete semaphore.

---

Detailed Description

A semaphore allows for protection of a resource that can be accessed by a fixed number of simultaneous threads.

A typical example of the use of semaphores is for a buffer containing N items. A producer thread may freely append N items before blocking for space to become available; a consumer thread can remove items and block only when no items are left. Thus, two counting semaphores could be used to manage such a buffer, one counting empty slots and one counting filled slots. As long as production and consumption proceed at comparable rates, no thread needs to be suspended.

---

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

• /home/jeroen/FOX/fox/fox-1.7.33/include/FXSemaphore.h