Wait for Thread Termination

thr_join(3T)

Use thr_join(3T) to wait for a thread to terminate. (For POSIX threads, see "pthread_join(3T)".)

#include <thread.h>

int thr_join(thread_t tid, thread_t *departedid, void **status);

Join specific

#include <thread.h>

thread_t tid;
thread_t departedid;
int ret;
int status;

/* waiting to join thread "tid" with status */
ret = thr_join(tid, &departedid, (void**)&status);

/* waiting to join thread "tid" without status */
ret = thr_join(tid, &departedid, NULL);

/* waiting to join thread "tid" without return id and status */
ret = thr_join(tid, NULL, NULL); 

When the tid is (thread_t)0, then thread_join() waits for any undetached thread in the process to terminate. In other words, when no thread identifier is specified, any undetached thread that exits causes thread_join() to return.

Join any

#include <thread.h>

thread_t tid;
thread_t departedid;
int ret;
int status;

/* waiting to join thread "tid" with status */
ret = thr_join(NULL, &departedid, (void **)&status); 

By indicating NULL as thread id in the Solaris thr_join(), a join will take place when any non detached thread in the process exits. The departedid will indicate the thread ID of exiting thread.