VMS Help POSIX Threads, TIS routines *Conan The Librarian (sorry for the slow response - running on an old VAX) |
The Compaq proprietary TIS interface provides routines that you use to build thread-safe libraries whose own routines do not create threads, but which can safely be called from a multithreaded environment. TIS routines are functionally identical to their corresponding routines in the PTHREAD interface. See the Guide to the POSIX Threads Library documentation for more information. In a program that creates threads, TIS routines provide full thread synchronization and memory coherence. But, when run in a program that does not use threads, the same TIS calls provide low-overhead "stub" implementations of PTHREAD features. That is, the objects created using the TIS interface are the same as PTHREAD objects. When threads are present, the guidelines for using PTHREAD routines apply also to the use of the corresponding TIS routine.
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