Esempio n. 1
0
  /** wait for howlong, for one more message to be available */
  public static boolean wait_timeout(EProc proc, EObject howlong) throws Pausable {
    try {
      proc.check_exit();

      if (ipclog.isLoggable(Level.FINE))
        ipclog.fine("WAIT| " + proc + " waits for messages for " + howlong + " ms");
      if (howlong == am_infinity) {
        proc.mbox.untilHasMessages(proc.midx + 1);
        proc.check_exit();
        if (ipclog.isLoggable(Level.FINE)) ipclog.fine("WAIT| " + proc + " wakes up on message");
        return true;
      } else {
        long now = System.currentTimeMillis();
        if (proc.midx == 0 || proc.timeout_start == 0L) {
          proc.timeout_start = now;
        }

        EInteger ei;
        if ((ei = howlong.testInteger()) == null)
          throw new ErlangError(EAtom.intern("timeout_value"));

        long end = proc.timeout_start + ei.longValue();
        long left = end - now;

        if (left < 0) {
          return false;
        }

        if (!proc.in_receive) {
          Task.sleep(left);
          return false;
        } else {

          if (ipclog.isLoggable(Level.FINE))
            ipclog.fine(
                "WAIT| " + proc + " waiting for " + left + "ms for msg #" + (proc.midx + 1));
          boolean res = proc.mbox.untilHasMessages(proc.midx + 1, left);
          proc.check_exit();
          if (ipclog.isLoggable(Level.FINE))
            ipclog.fine("WAIT| " + proc + " wakes up " + (res ? "on message" : "after timeout"));

          return res;
        }
      }
    } finally {
      proc.in_receive = false;
    }
  }
Esempio n. 2
0
 /** message reception timed out, reset message index */
 public static void timeout(EProc proc) {
   if (ipclog.isLoggable(Level.FINE)) ipclog.fine("WAIT| " + proc + " timed out");
   proc.midx = 0;
   proc.timeout_start = 0L;
   proc.in_receive = false;
 }
Esempio n. 3
0
 /** remove current message, and reset message index */
 public static void remove_message(EProc proc) {
   proc.mbox.remove(proc.midx);
   proc.midx = 0;
   proc.timeout_start = 0L;
   proc.in_receive = false;
 }