Better method of preventing duplicate applications

[libs/core.git] / source / core / application.cpp

diff --git a/source/core/application.cpp b/source/core/application.cpp
index ebd928b7b7ce049cd2d33ebcedba2ab8f8d4f190..d5745ed8a36ae2cbe139a14de0f1ba76c1b22d5c 100644 (file)
--- a/source/core/application.cpp
+++ b/source/core/application.cpp
@@ -1,4 +1,7 @@
+#include <typeinfo>
 #include <signal.h>
+#include <msp/debug/demangle.h>
+#include <msp/debug/errorreporter.h>
 #include <msp/io/print.h>
 #include "application.h"
 #include "getopt.h"
@@ -13,21 +16,16 @@ void *Application::data_ = 0;
 
 Application::Application():
        exit_code(0)
-{ }
+{
+       if(app_)
+               throw logic_error("instance already exists");
+}
 
 int Application::run(int argc, char **argv, void *data)
 {
-       static bool called = false;
-       if(called)
-       {
-               IO::cerr.write("Trying to call Application::run_app twice!\n");
-               return 125;
-       }
-       called = true;
-
        if(!starter_)
        {
-               IO::cerr.write("Trying to run with no RegisteredApplication class!\n");
+               IO::cerr.write("Application::run called with no RegisteredApplication class!\n");
                return 126;
        }
 
@@ -53,9 +51,19 @@ int Application::run(int argc, char **argv, void *data)
        }
        catch(const exception &e)
        {
-               delete app_;
+               bool handled = false;
+               if(const Debug::ErrorReporter *er = Debug::ErrorReporter::get_current())
+                       handled = er->report_uncaught_exception(e);
 
-               display_exception(e);
+               if(!handled)
+               {
+                       IO::print(IO::cerr, "An uncaught exception occurred.\n");
+                       IO::print(IO::cerr, "  type:   %s\n", Debug::demangle(typeid(e).name()));
+                       IO::print(IO::cerr, "  what(): %s\n", e.what());
+               }
+
+               delete app_;
+               app_ = 0;
 
                return 124;
        }