Method: Process#getsid

Defined in:
process.c

#getsid ⇒ Integer (private) #getsid(pid) ⇒ Integer (private)

Returns the session ID for the given process id. If not given, return current process sid. Not available on all platforms.

Process.getsid()                #=> 27422
Process.getsid(0)               #=> 27422
Process.getsid(Process.pid())   #=> 27422

Overloads:



4514
4515
4516
4517
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4523
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# File 'process.c', line 4514

static VALUE
proc_getsid(int argc, VALUE *argv)
{
    rb_pid_t sid;
    VALUE pid;

    rb_scan_args(argc, argv, "01", &pid);

    if (NIL_P(pid))
	pid = INT2FIX(0);

    sid = getsid(NUM2PIDT(pid));
    if (sid < 0) rb_sys_fail(0);
    return PIDT2NUM(sid);
}