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Multithreading
by earl, 6814 days ago
reentrant - Describes a function which can be called simultaneously by multiple threads when each invocation of the function references unique data. Calling a reentrant function simultaneously with the same data is not safe, and such invocations should be serialized.

thread-safe - Describes a function which can be called simultaneously by multiple threads when each invocation references shared data. Calling a thread-safe function simultaneously with the same data is safe, since all access to the shared data are serialized.

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taken out of "Thread Support in Qt" (http://doc.trolltech.com/3.1/threads.html) which also contains some links to books on MT.
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