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source: orxonox.OLD/branches/atmospheric_engine/src/util/signal_handler.cc @ 8187

Last change on this file since 8187 was 7461, checked in by patrick, 19 years ago

orxonox: the mission goal framework is nearly completed

File size: 2.2 KB
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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  if ( pid == 0 )
84  {
85    getInstance()->dontCatch();
86
87    sleep(2);
88
89
90    return;
91  }
92  else
93  {
94    if ( getInstance()->type == GDB_RUN_WRITE_TO_FILE && fork() == 0 )
95    {
96      sleep(1);
97      write( fd[1], "c\nbt\nq\n", 7 );
98
99      exit(0);
100    }
101
102    char command[256];
103    if ( getInstance()->type == GDB_RUN_WRITE_TO_FILE )
104    {
105      dup2( fd[0], STDIN_FILENO );
106      snprintf( command, 255, "gdb -p %d %s 1>" GDB_BT_FILE " 2>&1", pid, getInstance()->appName.c_str() );
107    }
108    else
109      snprintf( command, 255, "gdb -p %d %s", pid, getInstance()->appName.c_str() );
110    execlp( "sh", "sh", "-c", command, (void*)NULL);
111  }
112}
113
114#endif /* __WIN32__ */
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