Automatic back traces on windows.

[quassel.git] / src / common / logbacktrace_unix.cpp

diff --git a/src/common/logbacktrace_unix.cpp b/src/common/logbacktrace_unix.cpp
new file mode 100644 (file)
index 0000000..431c802
--- /dev/null
+++ b/src/common/logbacktrace_unix.cpp
@@ -0,0 +1,94 @@
+/***************************************************************************
+ *   Copyright (C) 2005-08 by the Quassel IRC Team                         *
+ *   devel@quassel-irc.org                                                 *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) version 3.                                           *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ ***************************************************************************/
+
+#include "quassel.h"
+
+#if defined(HAVE_EXECINFO) // && !defined(Q_OS_MAC)
+#  define BUILD_CRASHHANDLER
+#  include <execinfo.h>
+#  include <dlfcn.h>
+#  include <cxxabi.h>
+#  include <QFile>
+#  include <QTextStream>
+#  include <QDebug>
+#endif
+
+void Quassel::logBacktrace(const QString &filename) {
+#ifndef BUILD_CRASHHANDLER
+  Q_UNUSED(filename)
+#else
+  void* callstack[128];
+  int i, frames = backtrace(callstack, 128);
+
+  QFile dumpFile(filename);
+  dumpFile.open(QIODevice::Append);
+  QTextStream dumpStream(&dumpFile);
+
+  for (i = 0; i < frames; ++i) {
+    Dl_info info;
+    dladdr (callstack[i], &info);
+    // as a reference:
+    //     typedef struct
+    //     {
+    //       __const char *dli_fname;   /* File name of defining object.  */
+    //       void *dli_fbase;           /* Load address of that object.  */
+    //       __const char *dli_sname;   /* Name of nearest symbol.  */
+    //       void *dli_saddr;           /* Exact value of nearest symbol.  */
+    //     } Dl_info;
+
+    #if __LP64__
+    int addrSize = 16;
+    #else
+    int addrSize = 8;
+    #endif
+
+    QString funcName;
+    if(info.dli_sname) {
+      char *func = abi::__cxa_demangle(info.dli_sname, 0, 0, 0);
+      if(func) {
+        funcName = QString(func);
+        free(func);
+      } else {
+        funcName = QString(info.dli_sname);
+      }
+    } else {
+      funcName = QString("0x%1").arg((ulong)(info.dli_saddr), addrSize, 16, QLatin1Char('0'));
+    }
+
+    // prettificating the filename
+    QString fileName("???");
+    if(info.dli_fname) {
+      fileName = QString(info.dli_fname);
+      int slashPos = fileName.lastIndexOf('/');
+      if(slashPos != -1)
+        fileName = fileName.mid(slashPos + 1);
+    }
+
+    QString debugLine = QString("#%1 %2 0x%3 %4").arg(i, 3, 10)
+      .arg(fileName, - 20)
+      .arg((ulong)(callstack[i]), addrSize, 16, QLatin1Char('0'))
+      .arg(funcName);
+
+    dumpStream << debugLine << "\n";
+    qDebug() << qPrintable(debugLine);
+  }
+  dumpFile.close();
+#endif /* BUILD_CRASHHANDLER */
+}