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/*
* test-limit.c: Test memory size limits.
* Allocate memory until failure.
* Print amount allocated.
*
* https://pubs.opengroup.org/onlinepubs/9799919799/utilities/ulimit.html
* https://pubs.opengroup.org/onlinepubs/9799919799/functions/setrlimit.html
*/
#include <stdio.h>
#include <stdlib.h>
#define BUFSIZK 4
int
main(int argc, char **argv)
{
int i;
int *buf;
/*
* Limit to 4 GB, to avoid problems if memory limits are not
* working as expected.
*/
for (i = 0; i < (4 * 1024 * 1024) / BUFSIZK; i++) {
/* Allocate, write to force a page, and discard. */
buf = malloc(BUFSIZK * 1024);
if (buf == NULL)
break;
buf[0] = 0;
buf = NULL;
}
/* Print in kB. */
printf("%d\n", i * BUFSIZK);
}
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