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Release 1.0 Copyright ©1994 by Arcane Systems Ltd. All Rights Reserved. TKResource Inherits From: TKObject Declared In: threadkit/TKResource.h Class Description The TKResource class provides a mechanism for locking and unlocking named resources. The ThreadKit assumes no particular convention for naming resources, it just guarantees that no two threads may hold locks on the same name at any given time. Applications for this class include protecting devices, files and thread-unsafe functions ... anything that doesn't have a convenient object representation to apply locking semantics to. You may wish to prefix names with a type indicator to avoid namespace collisions (eg: "function:printf" vs. "file:printf" ). For example, if an application wants to guarantee that printf() is never called by more than one thread at once, you could bracket all calls with lock and unlock operations as follows: id printfLock = [ TKResource findResourceFor: "function:printf" ] ; [ printfLock threadLock ] ; ... [ printfLock threadUnlock ] ; Instance Variables NXAtom name; name A unique string naming the resource. Method Types Finding resources + findResourceFor: Freeing TKResource instances - free Managing resource names - setName: - name Class Methods findResourceFor: + findResourceFor: (const char *) aString Returns a TKResource instance with the name aString, or creates one if one does not already exist. Instance Methods free - free Removes the instance from the list of named resources before freeing it. name - (const char *) name Returns the resource's current name. See also: - setName: setName: - setName: (const char *) aString Returns nil if a resource with the given name already exists, otherwise changes the resource name to aString and returns self. See also: - name
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