Re: [C400-L] RE:Authentication / base64 encoder?

[James Rich <james@xxxxxxxxxxx>]

Jon Paris wrote:
>   >> Below is the code and it had no problems allocating 16,000,000 bytes to
> each of 50 pointers.  Am I missing or misunderstanding something?
>
> No Mel - but I must be.  And if Bruce says it is closer to 4G I would never
> doubt his word.  I am obviously confusing User Spaces with heap size.  Even
> so your results appear to fly in the face of some other test results that
> were reported on Midrange(?) a while back.

I wrote the following little program to test.  On linux if ends with:

james@stumpy:~/progs> ./bigmalloc
malloc() failed, size: 1000000000, errno: 12
Not enough memory

On V4R1 it ends with:

   malloc() failed, size: 100000000, errno: 0

linux box has 256M of RAM, twice that for swap.  V4R1 has 128M RAM. 
Interestingly on iSeries errno is not set to ENOMEM.  Don't know why.

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <errno.h>

int
main ()
{
  char *string;
  int i;
  unsigned long power;

  for(i=1;;i++)
    {
      power = pow (10, i);
      string = (char *) malloc (sizeof (char) * power);
      if (string == NULL)
        {
          printf ("malloc() failed, size: %d, errno: %d\n", sizeof 
(char) * power, errno);
          if (errno == ENOMEM)
            {
              printf ("Not enough memory\n");
            }
          break;
        }
      free (string);
    }
  return (0);
}


James Rich