pthread_testcancel - Man Page

request delivery of any pending cancellation request


#include <pthread.h>

void pthread_testcancel(void);

Compile and link with -pthread.


Calling pthread_testcancel() 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 pthread_setcancelstate(3)), or no cancellation request is pending, then a call to pthread_testcancel() has no effect.

Return Value

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 attributes(7).

pthread_testcancel()Thread safetyMT-Safe

Conforming to

POSIX.1-2001, POSIX.1-2008.


See pthread_cleanup_push(3).

See Also

pthread_cancel(3), pthread_cleanup_push(3), pthread_setcancelstate(3), pthreads(7)


This page is part of release 5.13 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at

Referenced By

pthread_cancel(3), pthread_cleanup_push(3), pthread_cleanup_push_defer_np(3), pthreads(7), pthread_setcancelstate(3).

2021-03-22 Linux Programmer's Manual