Semaphores - Definition

Semaphore can refer to:

Semaphore communication by means of flags or other positional indicator.
A mechanical device (a semaphore signal) used in railway signalling.
Semaphore (programming), invented by Edsger Dijkstra for computer science, where only one part of a concurrent system may access a limited resource. This is also called mutual exclusion.

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Example Usage of Semaphores
	A_n_t_h: «Des sémaphores dans la Sarkozie» (neuf-quinze) > http://tinyurl.com/y8o7oes #arretsurimages
	otolythe: more becomings-. I think. there is agar! and...bling? http://bit.ly/agMqn #imitosis #Semaphores
	sql_joker: SQL 2008 Forum - Win 2k8 Server 64bit - Named (System Wide) Semaphores - SQL Server 2k8: Hello,We have, for years, ... http://bit.ly/5SGZeD

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Semaphores - Definition

Example Usage of Semaphores