memory allocation with new under linux

From: arju (arvydas.juskaitis_at_mogul.com)
Date: 08/11/05

  • Next message: Rich Gibbs: "Re: diff on 2 files wont work due to "^M" character" 
    Date: 11 Aug 2005 08:32:31 -0700

    Hi,

    I'm developing a C++ program under Linux, which allocates lots of
    memory and fails sometimes - system sends KILL or TERM signal.
    I wrote a small program to test mem allocation and it fails in the same
    way.
    If I allocate bigger chunks of memory (250MB), operator new throws
    bad_alloc exception, as it is expected.

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

    int main()
    {
       unsigned long size = 0x100000;
       unsigned long count = 0xffffffff / size;

       try {
          for(int i = 0; i < count; i++) {
             printf("#%d ", i);
             char* ptr = new char[size];
             printf("new ");
             memset(ptr, 0, size);
             printf("memset\n");
          }

       } catch(std::bad_alloc& e) {
          printf("catch\n");
       }

       printf("done\n");
       return 0;
    }

    So the problem is - it shouldn't crash, program should receive
    exception instead.
    I'm running Suse 9.2 as development platform.

    Thanks,
    Arvid

  • Next message: Rich Gibbs: "Re: diff on 2 files wont work due to "^M" character"

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