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PTHREAD_JOIN (3) | C library functions | Unix Manual Pages | :man

NAME

pthread_join - wait for thread termination

CONTENTS

Library
Synopsis
Description
Return Values
Errors
See Also
Standards

LIBRARY


.Lb libc_r
.Lb libpthread
.Lb libthr

SYNOPSIS


.In pthread.h int pthread_join "pthread_t thread" "void **value_ptr"

DESCRIPTION

The pthread_join function suspends execution of the calling thread until the target thread terminates unless the target thread has already terminated.

On return from a successful pthread_join call with a non-NULL value_ptr argument, the value passed to pthread_exit by the terminating thread is stored in the location referenced by value_ptr. When a pthread_join returns successfully, the target thread has been terminated. The results of multiple simultaneous calls to pthread_join specifying the same target thread are undefined. If the thread calling pthread_join is cancelled, then the target thread is not detached.

A thread that has exited but remains unjoined counts against [_POSIX_THREAD_THREADS_MAX].

RETURN VALUES

If successful, the pthread_join function will return zero. Otherwise an error number will be returned to indicate the error.

ERRORS

The pthread_join function will fail if:
[EINVAL]
The implementation has detected that the value specified by thread does not refer to a joinable thread.
[ESRCH]
No thread could be found corresponding to that specified by the given thread ID, thread.
[EDEADLK]
A deadlock was detected or the value of thread specifies the calling thread.

SEE ALSO

wait(2), pthread_create(3)

STANDARDS


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