pthread_setcanceltype man page on BSDOS

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PTHREAD_TESTCANCEL(3)	    BSD Programmer's Manual	 PTHREAD_TESTCANCEL(3)

NAME
     pthread_testcancel - request that the specified thread be canceled

SYNOPSIS
     #include <pthread.h>

     int
     pthread_setcancelstate(int state, int *oldstate);

     int
     pthread_setcanceltype(int type, int *oldtype);

     void
     pthread_testcancel(void);

DESCRIPTION
     The pthread_setcancelstate() function sets the cancelability state of the
     calling thread to state. If oldstate is non-NULL the previous cancelabil-
     ity state is return in the referenced location.  Valid values for state
     are PTHREAD_CANCEL_ENABLE (the default) and PTHREAD_CANCEL_DISABLE.

     The pthread_setcanceltype() function sets the cancelability type of the
     calling thread to type. If oldtype is non-NULL the previous cancelability
     type is returned in the referenced location.  Valid values for type are
     PTHREAD_CANCEL_DEFERRED (the default) and PTHREAD_CANCEL_ASYNCHRONOUS.

     The pthread_testcancel() function creates a cancellation point in the
     calling thread.  This cancellation point will only have an effect if can-
     celability is enabled.

RETURN VALUES
     If successful, the pthread_setcancelstate() and pthread_setcanceltype()
     functions return zero.  Otherwise, an error number is returned to indi-
     cate the error.

ERRORS
     For each of the following conditions, if the condition is detected, the
     pthread_setcancelstate() function shall return the corresponding error
     number:

     [EINVAL]	   The specified state is not PTHREAD_CANCEL_ENABLE or
		   PTHREAD_CANCEL_DISABLE.

     For each of the following conditions, if the condition is detected, the
     pthread_setcanceltype() function shall return the corresponding error
     number:

     [EINVAL]	   The specified type is not PTHREAD_CANCEL_DEFERRED or
		   PTHREAD_CANCEL_ASYNCHRONOUS.

SEE ALSO
     pthreads(3),  pthread_cancel(3),  pthread_cond_timedwait(3),
     pthread_cond_wait(3),  pthread_exit(3),  pthread_join(3)

STANDARDS
     The pthread_setcancelstate(), pthread_setcanceltype(), and
     pthread_testcancel() functions conform to IEEE Std1003.1c (``POSIX'').

HISTORY
     The pthread_setcancelstate(), pthread_setcanceltype(), and
     pthread_testcancel() function first appeared in BSD/OS 4.1.

4th Berkeley Distribution	  Oct 1, 1999				     1
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