JCL Help:TJclMeteredSection

 JCL Help: TJclMeteredSection Class

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LibrariesProcessesandThreads.Synchronization.TJclMeteredSection

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Class Hierarchy

TJclMeteredSection

Summary

Provides a fast alternative to the semaphore kernel object.

Pascal

 public TJclMeteredSection = class(TObject);

Description

TJclMeteredSection is basically nothing more than a semaphore kernel object except that it is much faster. Its speed comes from the fact that unless the calling thread has to enter a wait state, all code is executed in user mode. This in opposition to a semaphore which always requires a transition to kernel mode. This class is (almost) a straight port from the metered section object as presented in the article "A Quick and Versatile Synchronization Object", Dan Chou which is available from the MSDN Library (Technical ArticlesWindows PlatformMultiThreading).

About

Unit

JclSynch

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▼ TJclMeteredSection

  TJclMeteredSection.AcquireLock

  TJclMeteredSection.Destroy

  TJclMeteredSection.Leave@Longint

  TJclMeteredSection.ReleaseLock

Donator

Marcel van Brakel

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