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source: orxonox.OLD/trunk/src/util/signal_handler.cc @ 8097

Last change on this file since 8097 was 8068, checked in by patrick, 18 years ago

trunk: merged the network branche back to trunk

File size: 2.2 KB
Line 
1/*
2   orxonox - the future of 3D-vertical-scrollers
3
4   Copyright (C) 2004 orx
5
6   This program is free software; you can redistribute it and/or modify
7   it under the terms of the GNU General Public License as published by
8   the Free Software Foundation; either version 2, or (at your option)
9   any later version.
10
11### File Specific:
12   main-programmer: Christoph Renner
13   co-programmer: ...
14*/
15
16#include "signal_handler.h"
17#include <assert.h>
18
19#ifndef __WIN32__
20
21SignalHandler * SignalHandler::singletonRef = NULL;
22
23SignalHandler::SignalHandler()
24{
25}
26
27void SignalHandler::doCatch( std::string appName, GdbRunType type )
28{
29  this->type = type;
30  this->appName = appName;
31
32  catchSignal( SIGSEGV );
33  catchSignal( SIGABRT );
34}
35
36void SignalHandler::dontCatch()
37{
38  for ( SignalRecList::iterator it = sigRecList.begin(); it != sigRecList.end(); it++ )
39  {
40    signal( it->signal, it->handler );
41  }
42
43  sigRecList.clear();
44}
45
46void SignalHandler::catchSignal( int sig )
47{
48  sighandler_t handler = signal( sig, SignalHandler::sigHandler );
49
50  assert( handler != SIG_ERR );
51
52  SignalRec rec;
53  rec.signal = sig;
54  rec.handler = handler;
55
56  sigRecList.push_front( rec );
57}
58
59void SignalHandler::sigHandler( int sig )
60{
61  std::string sigName = "UNKNOWN";
62
63  switch ( sig )
64  {
65    case SIGSEGV:
66      sigName = "SIGSEGV";
67      break;
68    case SIGABRT:
69      sigName = "SIGABRT";
70      break;
71  }
72
73  printf( "recieved signal %s\ntry to write backtrace to file orxonox.backtrace\n", sigName.c_str() );
74
75  int fd[2];
76
77  assert( pipe(fd) != -1 );
78
79  int pid = fork();
80
81  assert( pid != -1 );
82
83
84  if ( pid == 0 )
85  {
86    getInstance()->dontCatch();
87   
88    sleep(2);
89
90    return;
91  }
92  else
93  {
94    getInstance()->dontCatch();
95    if ( getInstance()->type == GDB_RUN_WRITE_TO_FILE && fork() == 0 )
96    {
97      sleep(1);
98      write( fd[1], "c\nbt\nq\n", 7 );
99
100      exit(0);
101    }
102
103    char command[256];
104    if ( getInstance()->type == GDB_RUN_WRITE_TO_FILE )
105    {
106      dup2( fd[0], STDIN_FILENO );
107      snprintf( command, 255, "gdb -p %d %s 1>>" GDB_BT_FILE " 2>&1", pid, getInstance()->appName.c_str() );
108    }
109    else
110      snprintf( command, 255, "gdb -p %d %s", pid, getInstance()->appName.c_str() );
111    execlp( "sh", "sh", "-c", command, (void*)NULL);
112  }
113}
114
115#endif /* __WIN32__ */
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