diff options
Diffstat (limited to 'process.c')
| -rw-r--r-- | process.c | 13 |
1 files changed, 9 insertions, 4 deletions
@@ -809,14 +809,14 @@ proc_waitall() } static VALUE -detach_process_watcer(pid_p) +detach_process_watcher(pid_p) int *pid_p; { int cpid, status; for (;;) { cpid = rb_waitpid(*pid_p, &status, WNOHANG); - if (cpid == -1) return Qnil; + if (cpid == -1) return rb_last_status; rb_thread_sleep(1); } } @@ -825,7 +825,7 @@ VALUE rb_detach_process(pid) int pid; { - return rb_thread_create(detach_process_watcer, (void*)&pid); + return rb_thread_create(detach_process_watcher, (void*)&pid); } @@ -843,7 +843,12 @@ rb_detach_process(pid) * only when you do not intent to explicitly wait for the child to * terminate. <code>detach</code> only checks the status * periodically (currently once each second). - * + * + * The waiting thread returns the exit status of the detached process + * when it terminates, so you can use <code>Thread#join</code> to + * know the result. If specified _pid_ is not a valid child process + * ID, the thread returns +nil+ immediately. + * * In this first example, we don't reap the first child process, so * it appears as a zombie in the process status display. * |