mdw@git.distorted.org.uk Git - disorder/blob - server/deadlock.c

   1 /*
   2  * This file is part of DisOrder
   3  * Copyright (C) 2005, 2007, 2008 Richard Kettlewell
   4  *
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #include "disorder-server.h"
  20
  21 static const struct option options[] = {
  22   { "help", no_argument, 0, 'h' },
  23   { "version", no_argument, 0, 'V' },
  24   { "config", required_argument, 0, 'c' },
  25   { "debug", no_argument, 0, 'd' },
  26   { "no-debug", no_argument, 0, 'D' },
  27   { "syslog", no_argument, 0, 's' },
  28   { "no-syslog", no_argument, 0, 'S' },
  29   { 0, 0, 0, 0 }
  30 };
  31
  32 /* display usage message and terminate */
  33 static void help(void) {
  34   xprintf("Usage:\n"
  35           "  disorder-deadlock [OPTIONS]\n"
  36           "Options:\n"
  37           "  --help, -h              Display usage message\n"
  38           "  --version, -V           Display version number\n"
  39           "  --config PATH, -c PATH  Set configuration file\n"
  40           "  --debug, -d             Turn on debugging\n"
  41           "  --[no-]syslog           Force logging\n"
  42           "\n"
  43           "Deadlock manager for DisOrder.  Not intended to be run\n"
  44           "directly.\n");
  45   xfclose(stdout);
  46   exit(0);
  47 }
  48
  49 int main(int argc, char **argv) {
  50   int n, err, aborted, logsyslog = !isatty(2);
  51
  52   set_progname(argv);
  53   if(!setlocale(LC_CTYPE, "")) fatal(errno, "error calling setlocale");
  54   while((n = getopt_long(argc, argv, "hVc:dDSs", options, 0)) >= 0) {
  55     switch(n) {
  56     case 'h': help();
  57     case 'V': version("disorder-deadlock");
  58     case 'c': configfile = optarg; break;
  59     case 'd': debugging = 1; break;
  60     case 'D': debugging = 0; break;
  61     case 'S': logsyslog = 0; break;
  62     case 's': logsyslog = 1; break;
  63     default: fatal(0, "invalid option");
  64     }
  65   }
  66   if(logsyslog) {
  67     openlog(progname, LOG_PID, LOG_DAEMON);
  68     log_default = &log_syslog;
  69   }
  70   if(config_read(0)) fatal(0, "cannot read configuration");
  71   info("started");
  72   trackdb_init(TRACKDB_NO_RECOVER);
  73   while(getppid() != 1) {
  74     if((err = trackdb_env->lock_detect(trackdb_env,
  75                                        0,
  76                                        DB_LOCK_DEFAULT,
  77                                        &aborted)))
  78       fatal(0, "trackdb_env->lock_detect: %s", db_strerror(err));
  79     if(aborted)
  80       D(("aborted %d lock requests", aborted));
  81     sleep(1);
  82   }
  83   /* if our parent goes away, it's time to stop */
  84   info("stopped (parent terminated)");
  85   return 0;
  86 }
  87
  88 /*
  89 Local Variables:
  90 c-basic-offset:2
  91 comment-column:40
  92 fill-column:79
  93 indent-tabs-mode:nil
  94 End:
  95 */