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Join thread
#include <pthread.h>
int pthread_join( pthread_t thread,
void** value_ptr );
- thread
- The target thread whose termination you're waiting for.
- value_ptr
- NULL, or a pointer to a location where the function
can store the value passed to
pthread_exit()
by the target thread.
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
The pthread_join() function blocks the calling thread
until the target thread thread terminates, unless
thread has already terminated. If value_ptr is
non-NULL and pthread_join() returns
successfully, then the value passed to pthread_exit() by
the target thread is placed in value_ptr. If the target
thread has been canceled then value_ptr is set to
PTHREAD_CANCELED.
|
The non-POSIX
pthread_timedjoin()
function is similar to pthread_join(), except that an error
is returned if the join doesn't occur before a given time. |
The target thread must be joinable. Multiple
pthread_join(), pthread_timedjoin(),
ThreadJoin(), and ThreadJoin_r() calls on the
same target thread aren't
allowed. When pthread_join() returns successfully, the
target thread has been terminated.
- EOK
- Success.
- EBUSY
- The thread thread is already being joined.
- EDEADLK
- The thread thread is the calling thread.
- EFAULT
- A fault occurred trying to access the buffers provided.
- EINVAL
- The thread thread isn't joinable.
- ESRCH
- The thread thread doesn't exist.
POSIX 1003.1 THR
Safety: | |
Cancellation point |
Yes |
Interrupt handler |
No |
Signal handler |
Yes |
Thread |
Yes |
pthread_create(),
pthread_detach(),
pthread_exit(),
pthread_timedjoin(),
ThreadJoin(),
ThreadJoin_r()
Processes and Threads
chapter of Getting Started with QNX Neutrino
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