bad_alloc.cc
author Emilio Largo <largo@largo.homelinux.org>
Thu, 16 Apr 2009 12:49:12 +0200
changeset 45 7197576fedcf
parent 29 7abf6146898e
child 77 49e0babccb23
permissions -rw-r--r--
pmc: namespace algebra for vector -> the namespace prevents clashes with std::vector -> std::vector and algebra::Vector with capital V. md5: a md5 replacement ncurses: keypad function added committer: Markus Bröker <mbroeker@largo.homelinux.org>
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/**
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 * test/demos/bad_alloc.cc
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 * Copyright (C) 2008 Markus Broeker
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 */
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#include <iostream>
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#include <vector>
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#include <exception>
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <cstdlib>
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using namespace std;
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int set_limit (int megs)
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{
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    struct rlimit rlim;
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    rlim.rlim_cur = megs;
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    rlim.rlim_max = 1.25 * megs;
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    if (megs > (4 * 1024 * 1024))
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        return setrlimit (RLIMIT_AS, &rlim);
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    return EXIT_FAILURE;
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}
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int main (int argc, char **argv)
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{
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    vector < int >v;
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    int i = 0;
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    char action;
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    if (set_limit (20 * 1024 * 1024)) {
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        cout << "System error" << endl;
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        return EXIT_FAILURE;
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    }
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    try {
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        for (;;) {
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            v.push_back (i++);
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        }
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    }
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    catch (exception & e) {
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        cout << e.what () << " after " << i << " iterations" << endl << endl;
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        cout << "Would you like to see the full error message? (y/n) ";
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        cin >> action;
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        v.clear ();
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        switch (action) {
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        case 'y':
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            throw;
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            break;
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        }
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    }
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    return EXIT_SUCCESS;
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}