method

getsid

v2_1_10 - Show latest stable - Class: Process

getsid(p1 = v1)

public

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

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

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

    rb_secure(2);
    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);
}

getsid

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