Changeset 2171 for code/trunk/src/util/SignalHandler.cc

Timestamp:

Nov 10, 2008, 12:05:03 AM (16 years ago)

Author:

landauf

Message:

merged revisions 2111-2170 from objecthierarchy branch back to trunk.

Location:

code/trunk

Files:

• . (modified) (1 prop)
• src/util (modified) (1 prop)
• src/util/SignalHandler.cc (modified) (2 diffs, 1 prop)

code/trunk/src/util/SignalHandler.cc

@@ -40 +40 @@
 #include <cstring>
 
-SignalHandler * SignalHandler::singletonRef = NULL;
+namespace orxonox
+{
+    SignalHandler * SignalHandler::singletonRef = NULL;
+}
 
 #if ORXONOX_PLATFORM != ORXONOX_PLATFORM_WIN32
@@ -49 +52 @@
 #include <X11/keysym.h>
 
-bool SignalHandler::bXAutoKeyRepeatOn_ = false;
-
-SignalHandler::SignalHandler()
+namespace orxonox
 {
+    bool SignalHandler::bXAutoKeyRepeatOn_ = false;
+
+    SignalHandler::SignalHandler()
+    {
+    }
+
+    /**
+     * register signal handlers for SIGSEGV and SIGABRT
+     * @param appName path to executable eg argv[0]
+     * @param filename filename to append backtrace to
+     */
+    void SignalHandler::doCatch( const std::string & appName, const std::string & filename )
+    {
+      this->appName = appName;
+      this->filename = filename;
+
+      // prepare for restoring XAutoKeyRepeat
+      Display* display;
+      if ((display = XOpenDisplay(0)))
+      {
+        XKeyboardState oldState;
+        XGetKeyboardControl(display, &oldState);
+        if (oldState.global_auto_repeat == AutoRepeatModeOn)
+          bXAutoKeyRepeatOn_ = true;
+        else
+          bXAutoKeyRepeatOn_ = false;
+        XCloseDisplay(display);
+      }
+      else
+      {
+        std::cout << "Warning: couldn't open X display to restore XAutoKeyRepeat." << std::endl;
+        bXAutoKeyRepeatOn_ = false;
+      }
+
+
+      // make sure doCatch is only called once without calling dontCatch
+      assert( sigRecList.size() == 0 );
+
+      catchSignal( SIGSEGV );
+      catchSignal( SIGABRT );
+      catchSignal( SIGILL );
+    }
+
+    /**
+     * restore previous signal handlers
+     */
+    void SignalHandler::dontCatch()
+    {
+      for ( SignalRecList::iterator it = sigRecList.begin(); it != sigRecList.end(); it++ )
+      {
+        signal( it->signal, it->handler );
+      }
+
+      sigRecList.clear();
+    }
+
+    /**
+     * catch signal sig
+     * @param sig signal to catch
+     */
+    void SignalHandler::catchSignal( int sig )
+    {
+      sig_t handler = signal( sig, SignalHandler::sigHandler );
+
+      assert( handler != SIG_ERR );
+
+      SignalRec rec;
+      rec.signal = sig;
+      rec.handler = handler;
+
+      sigRecList.push_front( rec );
+    }
+
+    /**
+     * sigHandler is called when receiving signals
+     * @param sig
+     */
+    void SignalHandler::sigHandler( int sig )
+    {
+      for ( SignalCallbackList::iterator it = SignalHandler::getInstance()->callbackList.begin(); it != SignalHandler::getInstance()->callbackList.end(); it++  )
+      {
+        (*(it->cb))( it->someData );
+      }
+
+      std::string sigName = "UNKNOWN";
+
+      switch ( sig )
+      {
+        case SIGSEGV:
+          sigName = "SIGSEGV";
+          break;
+        case SIGABRT:
+          sigName = "SIGABRT";
+          break;
+        case SIGILL:
+          sigName = "SIGILL";
+          break;
+      }
+
+      if (bXAutoKeyRepeatOn_)
+      {
+        std::cout << "Trying to restore XAutoKeyRepeat" << std::endl;
+        Display* display;
+        if ((display = XOpenDisplay(0)))
+        {
+          XAutoRepeatOn(display);
+          XCloseDisplay(display);
+        }
+      }
+
+      COUT(0) << "recieved signal " << sigName.c_str() << std::endl << "try to write backtrace to file orxonox.log" << std::endl;
+
+      int sigPipe[2];
+      if ( pipe(sigPipe) == -1 )
+      {
+        perror("pipe failed!\n");
+        exit(EXIT_FAILURE);
+      }
+
+      int sigPid = fork();
+
+      if ( sigPid == -1 )
+      {
+        perror("fork failed!\n");
+        exit(EXIT_FAILURE);
+      }
+
+      // gdb will be attached to this process
+      if ( sigPid == 0 )
+      {
+        getInstance()->dontCatch();
+        // wait for message from parent when it has attached gdb
+        int someData;
+
+        read( sigPipe[0], &someData, sizeof(someData) );
+
+        if ( someData != 0x12345678 )
+        {
+          COUT(0) << "something went wrong :(" << std::endl;
+        }
+
+        return;
+      }
+
+      int gdbIn[2];
+      int gdbOut[2];
+      int gdbErr[2];
+
+      if ( pipe(gdbIn) == -1 || pipe(gdbOut) == -1 || pipe(gdbErr) == -1 )
+      {
+        perror("pipe failed!\n");
+        kill( sigPid, SIGTERM );
+        waitpid( sigPid, NULL, 0 );
+        exit(EXIT_FAILURE);
+      }
+
+      int gdbPid = fork();
+      // this process will run gdb
+
+      if ( gdbPid == -1 )
+      {
+        perror("fork failed\n");
+        kill( sigPid, SIGTERM );
+        waitpid( sigPid, NULL, 0 );
+        exit(EXIT_FAILURE);
+      }
+
+      if ( gdbPid == 0 )
+      {
+        // start gdb
+
+        close(gdbIn[1]);
+        close(gdbOut[0]);
+        close(gdbErr[0]);
+
+        dup2( gdbIn[0], STDIN_FILENO );
+        dup2( gdbOut[1], STDOUT_FILENO );
+        dup2( gdbErr[1], STDERR_FILENO );
+
+        execlp( "sh", "sh", "-c", "gdb", (void*)NULL);
+      }
+
+      char cmd[256];
+      snprintf( cmd, 256, "file %s\nattach %d\nc\n", getInstance()->appName.c_str(), sigPid );
+      write( gdbIn[1], cmd, strlen(cmd) );
+
+      int charsFound = 0;
+      int promptFound = 0;
+      char byte;
+      while ( read( gdbOut[0], &byte, 1 ) == 1 )
+      {
+        if (
+          charsFound == 0 && byte == '(' ||
+          charsFound == 1 && byte == 'g' ||
+          charsFound == 2 && byte == 'd' ||
+          charsFound == 3 && byte == 'b' ||
+          charsFound == 4 && byte == ')' ||
+          charsFound == 5 && byte == ' '
+            )
+              charsFound++;
+        else
+          charsFound = 0;
+
+        if ( charsFound == 6 )
+        {
+          promptFound++;
+          charsFound = 0;
+        }
+
+        if ( promptFound == 3 )
+        {
+          break;
+        }
+      }
+
+      int someData = 0x12345678;
+      write( sigPipe[1], &someData, sizeof(someData) );
+
+      write( gdbIn[1], "bt\nk\nq\n", 7 );
+
+
+      charsFound = 0;
+      promptFound = 0;
+      std::string bt;
+      while ( read( gdbOut[0], &byte, 1 ) == 1 )
+      {
+        bt += std::string( &byte, 1 );
+
+        if (
+          charsFound == 0 && byte == '(' ||
+          charsFound == 1 && byte == 'g' ||
+          charsFound == 2 && byte == 'd' ||
+          charsFound == 3 && byte == 'b' ||
+          charsFound == 4 && byte == ')' ||
+          charsFound == 5 && byte == ' '
+            )
+              charsFound++;
+        else
+          charsFound = 0;
+
+        if ( charsFound == 6 )
+        {
+          promptFound++;
+          charsFound = 0;
+          bt += "\n";
+        }
+
+        if ( promptFound == 3 )
+        {
+          break;
+        }
+      }
+
+
+      waitpid( sigPid, NULL, 0 );
+      waitpid( gdbPid, NULL, 0 );
+
+      int wsRemoved = 0;
+
+      while ( wsRemoved < 2 && bt.length() > 0 )
+      {
+        if ( bt[1] == '\n' )
+          wsRemoved++;
+        bt.erase(0, 1);
+      }
+
+      if ( bt.length() > 0 )
+        bt.erase(0, 1);
+
+      time_t now = time(NULL);
+
+      std::string timeString = "\n\n\n\n"
+                         "=======================================================\n"
+                         "= time: " + std::string(ctime(&now)) +
+             "=======================================================\n";
+      bt.insert(0, timeString);
+
+      FILE * f = fopen( getInstance()->filename.c_str(), "a" );
+
+      if ( !f )
+      {
+        perror( ( std::string( "could not append to " ) + getInstance()->filename ).c_str() );
+        exit(EXIT_FAILURE);
+      }
+
+      if ( fwrite( bt.c_str(), 1, bt.length(), f ) != bt.length() )
+      {
+        COUT(0) << "could not write " << bt.length() << " byte to " << getInstance()->filename << std::endl;
+        exit(EXIT_FAILURE);
+      }
+
+      exit(EXIT_FAILURE);
+    }
+
+    void SignalHandler::registerCallback( SignalCallback cb, void * someData )
+    {
+      SignalCallbackRec rec;
+      rec.cb = cb;
+      rec.someData = someData;
+
+      callbackList.push_back(rec);
+    }
 }
 
-/**
- * register signal handlers for SIGSEGV and SIGABRT
- * @param appName path to executable eg argv[0]
- * @param filename filename to append backtrace to
- */
-void SignalHandler::doCatch( const std::string & appName, const std::string & filename )
-{
-  this->appName = appName;
-  this->filename = filename;
-
-  // prepare for restoring XAutoKeyRepeat
-  Display* display;
-  if ((display = XOpenDisplay(0)))
-  {
-    XKeyboardState oldState;
-    XGetKeyboardControl(display, &oldState);
-    if (oldState.global_auto_repeat == AutoRepeatModeOn)
-      bXAutoKeyRepeatOn_ = true;
-    else
-      bXAutoKeyRepeatOn_ = false;
-    XCloseDisplay(display);
-  }
-  else
-  {
-    std::cout << "Warning: couldn't open X display to restore XAutoKeyRepeat." << std::endl;
-    bXAutoKeyRepeatOn_ = false;
-  }
-
-
-  // make sure doCatch is only called once without calling dontCatch
-  assert( sigRecList.size() == 0 );
-
-  catchSignal( SIGSEGV );
-  catchSignal( SIGABRT );
-  catchSignal( SIGILL );
-}
-
-/**
- * restore previous signal handlers
- */
-void SignalHandler::dontCatch()
-{
-  for ( SignalRecList::iterator it = sigRecList.begin(); it != sigRecList.end(); it++ )
-  {
-    signal( it->signal, it->handler );
-  }
-
-  sigRecList.clear();
-}
-
-/**
- * catch signal sig
- * @param sig signal to catch
- */
-void SignalHandler::catchSignal( int sig )
-{
-  sig_t handler = signal( sig, SignalHandler::sigHandler );
-
-  assert( handler != SIG_ERR );
-
-  SignalRec rec;
-  rec.signal = sig;
-  rec.handler = handler;
-
-  sigRecList.push_front( rec );
-}
-
-/**
- * sigHandler is called when receiving signals
- * @param sig
- */
-void SignalHandler::sigHandler( int sig )
-{
-  for ( SignalCallbackList::iterator it = SignalHandler::getInstance()->callbackList.begin(); it != SignalHandler::getInstance()->callbackList.end(); it++  )
-  {
-    (*(it->cb))( it->someData );
-  }
-
-  std::string sigName = "UNKNOWN";
-
-  switch ( sig )
-  {
-    case SIGSEGV:
-      sigName = "SIGSEGV";
-      break;
-    case SIGABRT:
-      sigName = "SIGABRT";
-      break;
-    case SIGILL:
-      sigName = "SIGILL";
-      break;
-  }
-
-  if (bXAutoKeyRepeatOn_)
-  {
-    std::cout << "Trying to restore XAutoKeyRepeat" << std::endl;
-    Display* display;
-    if ((display = XOpenDisplay(0)))
-    {
-      XAutoRepeatOn(display);
-      XCloseDisplay(display);
-    }
-  }
-
-  COUT(0) << "recieved signal " << sigName.c_str() << std::endl << "try to write backtrace to file orxonox.log" << std::endl;
-
-  int sigPipe[2];
-  if ( pipe(sigPipe) == -1 )
-  {
-    perror("pipe failed!\n");
-    exit(EXIT_FAILURE);
-  }
-
-  int sigPid = fork();
-
-  if ( sigPid == -1 )
-  {
-    perror("fork failed!\n");
-    exit(EXIT_FAILURE);
-  }
-
-  // gdb will be attached to this process
-  if ( sigPid == 0 )
-  {
-    getInstance()->dontCatch();
-    // wait for message from parent when it has attached gdb
-    int someData;
-
-    read( sigPipe[0], &someData, sizeof(someData) );
-
-    if ( someData != 0x12345678 )
-    {
-      COUT(0) << "something went wrong :(" << std::endl;
-    }
-
-    return;
-  }
-
-  int gdbIn[2];
-  int gdbOut[2];
-  int gdbErr[2];
-
-  if ( pipe(gdbIn) == -1 || pipe(gdbOut) == -1 || pipe(gdbErr) == -1 )
-  {
-    perror("pipe failed!\n");
-    kill( sigPid, SIGTERM );
-    waitpid( sigPid, NULL, 0 );
-    exit(EXIT_FAILURE);
-  }
-
-  int gdbPid = fork();
-  // this process will run gdb
-
-  if ( gdbPid == -1 )
-  {
-    perror("fork failed\n");
-    kill( sigPid, SIGTERM );
-    waitpid( sigPid, NULL, 0 );
-    exit(EXIT_FAILURE);
-  }
-
-  if ( gdbPid == 0 )
-  {
-    // start gdb
-
-    close(gdbIn[1]);
-    close(gdbOut[0]);
-    close(gdbErr[0]);
-
-    dup2( gdbIn[0], STDIN_FILENO );
-    dup2( gdbOut[1], STDOUT_FILENO );
-    dup2( gdbErr[1], STDERR_FILENO );
-
-    execlp( "sh", "sh", "-c", "gdb", (void*)NULL);
-  }
-
-  char cmd[256];
-  snprintf( cmd, 256, "file %s\nattach %d\nc\n", getInstance()->appName.c_str(), sigPid );
-  write( gdbIn[1], cmd, strlen(cmd) );
-
-  int charsFound = 0;
-  int promptFound = 0;
-  char byte;
-  while ( read( gdbOut[0], &byte, 1 ) == 1 )
-  {
-    if (
-      charsFound == 0 && byte == '(' ||
-      charsFound == 1 && byte == 'g' ||
-      charsFound == 2 && byte == 'd' ||
-      charsFound == 3 && byte == 'b' ||
-      charsFound == 4 && byte == ')' ||
-      charsFound == 5 && byte == ' '
-        )
-          charsFound++;
-    else
-      charsFound = 0;
-
-    if ( charsFound == 6 )
-    {
-      promptFound++;
-      charsFound = 0;
-    }
-
-    if ( promptFound == 3 )
-    {
-      break;
-    }
-  }
-
-  int someData = 0x12345678;
-  write( sigPipe[1], &someData, sizeof(someData) );
-
-  write( gdbIn[1], "bt\nk\nq\n", 7 );
-
-
-  charsFound = 0;
-  promptFound = 0;
-  std::string bt;
-  while ( read( gdbOut[0], &byte, 1 ) == 1 )
-  {
-    bt += std::string( &byte, 1 );
-
-    if (
-      charsFound == 0 && byte == '(' ||
-      charsFound == 1 && byte == 'g' ||
-      charsFound == 2 && byte == 'd' ||
-      charsFound == 3 && byte == 'b' ||
-      charsFound == 4 && byte == ')' ||
-      charsFound == 5 && byte == ' '
-        )
-          charsFound++;
-    else
-      charsFound = 0;
-
-    if ( charsFound == 6 )
-    {
-      promptFound++;
-      charsFound = 0;
-      bt += "\n";
-    }
-
-    if ( promptFound == 3 )
-    {
-      break;
-    }
-  }
-
-
-  waitpid( sigPid, NULL, 0 );
-  waitpid( gdbPid, NULL, 0 );
-
-  int wsRemoved = 0;
-
-  while ( wsRemoved < 2 && bt.length() > 0 )
-  {
-    if ( bt[1] == '\n' )
-      wsRemoved++;
-    bt.erase(0, 1);
-  }
-
-  if ( bt.length() > 0 )
-    bt.erase(0, 1);
-
-  time_t now = time(NULL);
-
-  std::string timeString = "\n\n\n\n"
-                     "=======================================================\n"
-                     "= time: " + std::string(ctime(&now)) +
-         "=======================================================\n";
-  bt.insert(0, timeString);
-
-  FILE * f = fopen( getInstance()->filename.c_str(), "a" );
-
-  if ( !f )
-  {
-    perror( ( std::string( "could not append to " ) + getInstance()->filename ).c_str() );
-    exit(EXIT_FAILURE);
-  }
-
-  if ( fwrite( bt.c_str(), 1, bt.length(), f ) != bt.length() )
-  {
-    COUT(0) << "could not write " << bt.length() << " byte to " << getInstance()->filename << std::endl;
-    exit(EXIT_FAILURE);
-  }
-
-  exit(EXIT_FAILURE);
-}
-
-void SignalHandler::registerCallback( SignalCallback cb, void * someData )
-{
-  SignalCallbackRec rec;
-  rec.cb = cb;
-  rec.someData = someData;
-
-  callbackList.push_back(rec);
-}
-
 #endif /* ORXONOX_PLATFORM == ORXONOX_PLATFORM_WIN32 */