Retro68/TestApps/ExceptionTest.cc

/*
     Copyright 2012 Wolfgang Thaller.

     This file is part of Retro68.

     Retro68 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 3 of the License, or
     (at your option) any later version.

     Retro68 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 Retro68.  If not, see <http://www.gnu.org/licenses/>.
*/

#include <stdio.h>
#include <stdlib.h>
#include <exception>

#include <Events.h>

class Foo
{
};

void foobar()
{
    throw Foo();
}

void UnexpectedExceptionOccurred()
{
    printf("std::unexpected called.\n");
    printf("Press Enter...\n");
    getchar();
    exit(1);
}

void UncaughtExceptionOccurred()
{
    printf("std::terminate called.\n");
    printf("Press Enter...\n");
    getchar();
    exit(1);
}

int main(int argc, char** argv)
{
    std::set_unexpected(&UnexpectedExceptionOccurred);
    std::set_terminate(&UncaughtExceptionOccurred);
    bool throwFail = false;
    bool catchFail = true;
    for(int i = 0; i < 5; i++)
    {
        int n = i == 0 ? 1 : 100;
        printf("Exception speed test (%3d iterations): ", n); fflush(stdout);
        long start = TickCount();
        for(int j = 0; j < n; j++)
        {
            try { foobar(); throwFail = true; } catch(...) { catchFail = false; }
        }
        long end = TickCount();

        printf("%g ms per throw/catch\n",(end-start)*1000 / 60.0 / n);
    }

    if(throwFail)
        printf("******** FAILURE: throw didn't really throw\n");
    if(catchFail)
        printf("******** FAILURE: catch block never entered\n");

    printf("Press Enter...\n");
    getchar();
    return 0;
}