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authorJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
committerJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
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-.TH PTHREAD_JOIN 3 LinuxThreads
-
-.SH NAME
-pthread_join \- wait for termination of another thread
-
-.SH SYNOPSIS
-#include <pthread.h>
-
-int pthread_join(pthread_t th, void **thread_return);
-
-.SH DESCRIPTION
-!pthread_join! suspends the execution of the calling thread until the
-thread identified by |th| terminates, either by calling !pthread_exit!(3)
-or by being cancelled.
-
-If |thread_return| is not !NULL!, the return value of |th| is stored
-in the location pointed to by |thread_return|.  The return value of
-|th| is either the argument it gave to !pthread_exit!(3), or
-!PTHREAD_CANCELED! if |th| was cancelled.
-
-The joined thread !th! must be in the joinable state: it must not have
-been detached using !pthread_detach!(3) or the
-!PTHREAD_CREATE_DETACHED! attribute to !pthread_create!(3).
-
-When a joinable thread terminates, its memory resources (thread
-descriptor and stack) are not deallocated until another thread
-performs !pthread_join! on it. Therefore, !pthread_join! must be
-called once for each joinable thread created to avoid memory leaks.
-
-At most one thread can wait for the termination of a given
-thread. Calling !pthread_join! on a thread |th| on which another
-thread is already waiting for termination returns an error.
-
-.SH CANCELLATION
-
-!pthread_join! is a cancellation point. If a thread is canceled while
-suspended in !pthread_join!, the thread execution resumes immediately
-and the cancellation is executed without waiting for the |th| thread
-to terminate. If cancellation occurs during !pthread_join!, the |th|
-thread remains not joined.
-
-.SH "RETURN VALUE"
-On success, the return value of |th| is stored in the location pointed
-to by |thread_return|, and 0 is returned. On error, a non-zero error
-code is returned.
-
-.SH ERRORS
-.TP
-!ESRCH!
-No thread could be found corresponding to that specified by |th|.
-.TP
-!EINVAL!
-The |th| thread has been detached.
-.TP
-!EINVAL!
-Another thread is already waiting on termination of |th|.
-.TP
-!EDEADLK!
-The |th| argument refers to the calling thread.
-
-.SH AUTHOR
-Xavier Leroy <Xavier.Leroy@inria.fr>
-
-.SH "SEE ALSO"
-!pthread_exit!(3),
-!pthread_detach!(3),
-!pthread_create!(3),
-!pthread_attr_setdetachstate!(3),
-!pthread_cleanup_push!(3),
-!pthread_key_create!(3).