source: src/Fragmentation/Automation/poolworker.cpp@ 425fc6

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Last change on this file since 425fc6 was aec098, checked in by Frederik Heber <heber@…>, 13 years ago

Added signal handling function to poolworker to intercept ctrl-c via PoolWorker::shutdown().

  • this is for gracefully shutting down the worker (i.e. letting server know that we are off).
  • Added PoolWorker::shutdown() function to gracefully shutdown.
  • We use RemoveFromPoolOperation() to unlist from server's pool.
  • PoolWorker now contains ref to io_Service in order to stop the service on shutdown.
  • Property mode set to 100644
File size: 1.9 KB
Line 
1/*
2 * Project: MoleCuilder
3 * Description: creates and alters molecular systems
4 * Copyright (C) 2012 University of Bonn. All rights reserved.
5 * Please see the LICENSE file or "Copyright notice" in builder.cpp for details.
6 */
7
8/*
9 * \file poolworker.cpp
10 *
11 * This file strongly follows the Serialization example from the boost::asio
12 * library (see client.cpp)
13 *
14 * Created on: Feb 28, 2012
15 * Author: heber
16 */
17
18
19// include config.h
20#ifdef HAVE_CONFIG_H
21#include <config.h>
22#endif
23
24// boost asio needs specific operator new
25#include <boost/asio.hpp>
26
27#include "CodePatterns/MemDebug.hpp"
28
29#include <iostream>
30#include <boost/lexical_cast.hpp>
31#include <signal.h>
32
33#include "atexit.hpp"
34#include "CodePatterns/Info.hpp"
35#include "CodePatterns/Log.hpp"
36#include "Pool/PoolWorker.hpp"
37
38boost::function<void (int)> shutdownfunction;
39
40void signalhandler(int sig)
41{
42 if (shutdownfunction)
43 shutdownfunction(sig);
44 signal(SIGINT, NULL);
45}
46
47int main(int argc, char* argv[])
48{
49 // from this moment on, we need to be sure to deeinitialize in the correct order
50 // this is handled by the cleanup function
51 atexit(cleanUp);
52
53 setVerbosity(3);
54
55 size_t exitflag = 0;
56 try
57 {
58 // Check command line arguments.
59 if (argc != 5)
60 {
61 std::cerr << "Usage: " << argv[0] << " <host> <port> <listenhost> <listenport>" << std::endl;
62 return 1;
63 }
64
65 boost::asio::io_service io_service;
66 PoolWorker client(io_service, argv[1], argv[2], argv[3], argv[4]);
67
68 // catch ctrl-c and shutdown worker properly
69 shutdownfunction = boost::bind(&PoolWorker::shutdown, boost::ref(client), _1);
70// signal(SIGABRT, &signalhandler);
71// signal(SIGTERM, &signalhandler);
72 signal(SIGINT, &signalhandler);
73
74 // process io requests
75 {
76 Info info("io_service");
77 io_service.run();
78 }
79 exitflag = client.getFlag();
80 }
81 catch (std::exception& e)
82 {
83 std::cerr << e.what() << std::endl;
84 }
85
86
87 return exitflag;
88}
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