pthread_testcancel − request delivery of any pending
cancellation request



     Compile and link with −pthread.

Calling creates a cancellation point within the calling
thread, so that a thread that is otherwise executing code
that contains no cancellation points will respond to a
cancellation request.

     If cancelability is disabled (using or no cancellation
request is pending, then a call to has no effect.

This function does not return a value.  If the calling
thread is canceled as a consequence of a call to this
function, then the function does not return.

This function always succeeds.

For an explanation of the terms used in this section, see

│Interface            Attribute     Value   │
│                     │ Thread safety MT‐Safe │

POSIX.1‐2001, POSIX.1‐2008.


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