#!/bin/bash

# Start a systemtap server
#
# Copyright (C) 2008, 2009 Red Hat Inc.
#
# This file is part of systemtap, and is free software.  You can
# redistribute it and/or modify it under the terms of the GNU General
# Public License (GPL); either version 2, or (at your option) any
# later version.

# This script attempts to start a systemtap server and echoes the
# process id, if successful.

# Initialize the environment
. `dirname $0`/stap-env

# start the server
${stap_exec_prefix}stap-serverd "$@" </dev/null >/dev/null 2>&1 &
server_pid=$!

# Make sure the server is started
for ((attempt=0; $attempt < 10; ++attempt))
do
    # Has the server started?
    if ! (ps -a | grep $server_pid) >/dev/null 2>&1; then
	sleep 1
	continue
    fi

    # Is avahi advertizing the server?
    if ! (ps -fa | grep avahi-publish-service | grep $server_pid) > /dev/null 2>&1; then
	sleep 1
	continue
    fi

    # The server is ready
    echo $server_pid
    exit 0
done

exit 1 # server did not start