pthread_testcancel(3) Library Functions Manual pthread_testcancel(3) NAME pthread_testcancel - request delivery of any pending cancelation request LIBRARY POSIX threads library (libpthread, -lpthread) SYNOPSIS #include void pthread_testcancel(void); DESCRIPTION Calling pthread_testcancel() creates a cancelation point within the calling thread, so that a thread that is otherwise executing code that contains no cancelation points will respond to a cancelation request. If cancelability is disabled (using pthread_setcancelstate(3)), or no can- celation request is pending, then a call to pthread_testcancel() has no ef- fect. 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 re- turn. ERRORS This function always succeeds. ATTRIBUTES For an explanation of the terms used in this section, see attributes(7). allbox; lbx lb lb l l l. Interface Attribute Value T{ pthread_testcancel() T} Thread safety MT-Safe STANDARDS POSIX.1-2008. HISTORY glibc 2.0. POSIX.1-2001. EXAMPLES See pthread_cleanup_push(3). SEE ALSO pthread_cancel(3), pthread_cleanup_push(3), pthread_setcancelstate(3), pthreads(7) Linux man-pages 6.18 2025-05-17 pthread_testcancel(3)