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Abstract: Semaphores are used to coordinate multiple threads and processes. That semaphores provide multiple threads with simultaneous access to a shared resource is highlighted by the TFixedConnectionPool class described in this article.

Semaphores are like mutexes on steroids. Not only do they provide for blocking thread synchronization, but they permit two or more threads, up to some specified maximum number, to work concurrently with a shared resource. As a result, they are unlike most other synchronization objects, which typically provide access to one thread at a time. For an introduction to the creation and use of semaphores, read the preceding article in this series on the Borland Developer Network site by clicking here. Read the rest of this entry »

Abstract: Semaphores are like mutexes on steroids. Not only can they coordinate multiple threads and process, but they can permit more than one simultaneous lock. This article shows you how to use these useful objects in a multithreaded environment

Semaphores are powerful synchronization objects that, like mutexes (mutually exclusives), permit you to coordinate multiple threads and processes in your Delphi applications. Likewise, in multithreaded server environments, such as WebSnap, Web Broker ISAPI servers, and IntraWeb applications, semaphores provide a flexible mechanism for protecting shared resources.
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