add Components/CrashStackTrace/

Components/CrashStackTrace/handler.cpp

@@ -0,0 +1,58 @@
+  QString WriteStackTrace(const QString &aStackTrace)
+  {
+    QString path = QDir::homePath() + "/.local/share/spark-store/crash/";
+    QFile StackTraceFile;
+    if(!QDir().exists(path))
+      if(!QDir().mkpath(path))
+        return QObject::tr("Stack trace directory %1 cannot be created. "
+                           "Stack trace wasn't saved.").arg(path);
+    path += QString::number(QDateTime::currentDateTimeUtc().toSecsSinceEpoch());
+    while(QFile::exists(path))
+      path += "_";
+    StackTraceFile.setFileName(path);
+    StackTraceFile.open(QIODevice::WriteOnly);
+    if(StackTraceFile.isOpen() && StackTraceFile.isWritable())
+    {
+      QTextStream StackTraceWriter;
+      StackTraceWriter.setDevice(&StackTraceFile);
+      StackTraceWriter << QDateTime::currentDateTime().toLocalTime().toString() << "\n\n";
+      StackTraceWriter << aStackTrace;
+      StackTraceFile.close();
+      return QObject::tr("Stack trace written to \"%1\".").arg(path);
+    }
+    return QObject::tr("Stack trace file %1 cannot be opened. "
+                       "Stack trace wasn't saved.").arg(path);
+  }
+
+  void CrashSignalHandler(int sig)
+  {
+    QString msg("Program has received signal %1 during normal execution.\n\n");
+    switch(sig)
+    {
+      case SIGSEGV:
+        msg = msg.arg(QObject::tr("\"SIGSEGV\" (Segmentation fault)"));
+        goto CRASH;
+      case SIGFPE:
+        msg = msg.arg(QObject::tr("\"SIGFPE\" (Arithmetic exception)"));
+        goto CRASH;
+      case SIGABRT:
+        msg = msg.arg(QObject::tr("\"SIGABRT\" (Abort)"));
+      CRASH:
+        {
+          void* TraceStack[StackTraceArraySize];
+          int StackTraceSize = backtrace(TraceStack, StackTraceArraySize);
+          auto TraceTextArray = backtrace_symbols(TraceStack, StackTraceArraySize);
+          msg += QString(QObject::tr("Stack trace:\n"));
+          for(int i = 0; i < StackTraceSize; i++)
+            msg += QString::number(i) + ">  " + QString(TraceTextArray[i]) + '\n';
+          msg += "\n\nSpark Store cannot continue.\n\n";
+          msg += WriteStackTrace(msg);
+          QMessageBox::critical(nullptr, QObject::tr("Spark Store Crashed"),
+                                msg);
+          exit(2);
+        }
+      default:
+        SpkLog::Error(QObject::tr("Unknown signal %1 received in crash handler. "
+                                  "Program internals may be corrupted. Please decide if you want "
+                                  "to continue execution.").arg(sig), true);
+    }