PTHREAD_EXIT(3C) Standard C Library Functions PTHREAD_EXIT(3C)
NAME
pthread_exit - terminate calling thread
SYNOPSIS
cc -mt [
flag... ]
file... -lpthread [
library... ]
#include <pthread.h>
void pthread_exit(
void *value_ptr);
DESCRIPTION
The
pthread_exit() function terminates the calling thread, in a
similar way that
exit(3C) terminates the calling process. If the
thread is not detached, the exit status specified by
value_ptr is
made available to any successful join with the terminating thread.
See
pthread_join(3C). Any cancellation cleanup handlers that have
been pushed and not yet popped are popped in the reverse order that
they were pushed and then executed. After all cancellation cleanup
handlers have been executed, if the thread has any thread-specific
data, appropriate destructor functions will be called in an
unspecified order. Thread termination does not release any
application visible process resources, including, but not limited to,
mutexes and file descriptors, nor does it perform any process level
cleanup actions, including, but not limited to, calling any
atexit() routines that might exist.
An exiting thread runs with all signals blocked. All thread
termination functions, including cancellation cleanup handlers and
thread-specific data destructor functions, are called with all
signals blocked.
An implicit call to
pthread_exit() is made when a thread other than
the thread in which
main() was first invoked returns from the start
routine that was used to create it. The function's return value
serves as the thread's exit status.
The behavior of
pthread_exit() is undefined if called from a
cancellation cleanup handler or destructor function that was invoked
as a result of either an implicit or explicit call to
pthread_exit().
After a thread has terminated, the result of access to local (auto)
variables of the thread is undefined. Thus, references to local
variables of the exiting thread should not be used for the
pthread_exit() value_ptr parameter value.
The process exits with an exit status of
0 after the last thread has
been terminated. The behavior is as if the implementation called
exit() with a
0 argument at thread termination time.
RETURN VALUES
The
pthread_exit() function cannot return to its caller.
ERRORS
No errors are defined.
ATTRIBUTES
See
attributes(7) for descriptions of the following attributes:
+--------------------+-------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-------------------+
|Interface Stability | Committed |
+--------------------+-------------------+
|MT-Level | MT-Safe |
+--------------------+-------------------+
|Standard | See
standards(7). |
+--------------------+-------------------+
SEE ALSO
exit(3C),
pthread_cancel(3C),
pthread_create(3C),
pthread_join(3C),
pthread_key_create(3C),
attributes(7),
standards(7) November 2, 2007 PTHREAD_EXIT(3C)
