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From Manoj Kasichainula <>
Subject Re: Non-threadsafe functions used in threads? (1.3, 2.0)
Date Mon, 04 Oct 1999 19:01:54 GMT
On Tue, Sep 28, 1999 at 11:46:20AM +0200, Ralf S. Engelschall wrote:
> A list of acceptable functions for threaded environments you can find in SUSv2
> under
> But, yes, Pthreads doesn't _require_ thread-safe functions unless
> _POSIX_THREAD_SAFE_FUNCTIONS is defined. This usually means you cannot rely on
> the existence of thread-safe functions or at least have a own fallback
> possibility in case _POSIX_THREAD_SAFE_FUNCTIONS is not defined.

Apparently, there are even two different #defines to indicate this.
You, Single Unix, and Linux's header files use
_POSIX_THREAD_SAFE_FUNCTIONS. This O'Reilly pthreads book mentions
_POSIX_REENTRANT_FUNCTIONS, and the X includes on this machine look
for both, as I guess we'll have to do.

Manoj Kasichainula -
IBM, Apache Development

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