NAME
pthread_cancel —
cancel execution of a thread
LIBRARY
library “libpthread”
SYNOPSIS
#include
<pthread.h>
int
pthread_cancel(pthread_t
thread);
DESCRIPTION
Thepthread_cancel()
function requests that thread be canceled. The target
thread's cancelability state and type determines when the cancellation takes
effect. When the cancellation is acted on, the cancellation cleanup handlers
for thread are called. When the last cancellation
cleanup handler returns, the thread-specific data destructor functions will be
called for thread. When the last destructor function
returns, thread will be terminated.
The cancellation processing in the target
thread runs asynchronously with respect to the calling thread returning from
pthread_cancel().
A status of PTHREAD_CANCELED is made
available to any threads joining with the target. The symbolic constant
PTHREAD_CANCELED expands to a constant expression of
type (void *), whose value matches no pointer to an
object in memory nor the value NULL.
RETURN VALUES
If successful, the pthread_cancel()
functions will return zero. Otherwise an error number will be returned to
indicate the error.
ERRORS
The pthread_cancel() function will fail
if:
- [
ESRCH] - No thread could be found corresponding to that specified by the given thread ID.
SEE ALSO
pthread_cleanup_pop(3), pthread_cleanup_push(3), pthread_exit(3), pthread_join(3), pthread_setcancelstate(3), pthread_setcanceltype(3), pthread_testcancel(3)
STANDARDS
The pthread_cancel() function conforms to
ISO/IEC 9945-1:1996 (“POSIX.1”).
AUTHORS
This manual page was written by David
Leonard
<d@openbsd.org> for the
OpenBSD implementation of
pthread_cancel().