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Expose sx_xholder() as a public macro. It returns a pointer to the thread

Description

Expose sx_xholder() as a public macro. It returns a pointer to the thread
that holds the current exclusive lock, or NULL if no thread holds an
exclusive lock.

Requested by: pjd

Details

Provenance
jhbAuthored on May 19 2007, 8:18 PM
Parents
rG7229ab21b768: Add a few sentences of caution for Microsoft Vista users who might
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