Moved to new sigaction API to more reliably catch signals.

Former-commit-id: 3ebe52109e

src/storm.cpp

@@ -385,7 +385,7 @@ void checkPrctlFormulae(storm::modelchecker::prctl::AbstractModelChecker<double>
  * Main entry point.
  */
 int main(const int argc, const char* argv[]) {
-	// Register a signal handler to catch segfaults and display a backtrace.
+    // Register a signal handler to catch signals and display a backtrace.
 	installSignalHandler();
     
     // Print an information header.

src/utility/ErrorHandling.h

@@ -121,10 +121,30 @@ void signalHandler(int sig) {
  * Registers some signal handlers so that we can display a backtrace upon erroneuous termination.
  */
 void installSignalHandler() {
+#ifndef WINDOWS
+    struct sigaction sa;
+    sa.sa_handler = signalHandler;
+    sigemptyset(&sa.sa_mask);
+    sa.sa_flags = SA_RESTART;
+    
+    if (sigaction(SIGSEGV, &sa, nullptr) == -1) {
+        std::cerr << "FATAL: Installing a signal handler failed." << std::endl;
+    }
+    if (sigaction(SIGABRT, &sa, nullptr) == -1) {
+        std::cerr << "FATAL: Installing a signal handler failed." << std::endl;
+    }
+    if (sigaction(SIGINT, &sa, nullptr) == -1) {
+        std::cerr << "FATAL: Installing a signal handler failed." << std::endl;
+    }
+    if (sigaction(SIGTERM, &sa, nullptr) == -1) {
+        std::cerr << "FATAL: Installing a signal handler failed." << std::endl;
+    }
+#else
 	signal(SIGSEGV, signalHandler);
     signal(SIGABRT, signalHandler);
     signal(SIGINT, signalHandler);
     signal(SIGTERM, signalHandler);
+#endif
 }
 
 #endif	/* ERRORHANDLING_H */