b1da7fafd0
. also make other out-of-memory conditions less fatal . add a test case for a user program using all the memory it can . remove some diagnostic prints for situations that are normal when running out of memory so running the test isn't noisy
49 lines
779 B
C
49 lines
779 B
C
|
|
/* Code to test reasonable response to out-of-memory condition
|
|
* of regular processes.
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <dlfcn.h>
|
|
|
|
#include <sys/mman.h>
|
|
#include <sys/wait.h>
|
|
|
|
#define MAX_ERROR 2
|
|
|
|
#include "magic.h"
|
|
#include "common.c"
|
|
|
|
int main (int argc, char *argv[])
|
|
{
|
|
pid_t f;
|
|
start(64);
|
|
#define NADDRS 500
|
|
#define LEN 4096
|
|
static void *addrs[NADDRS];
|
|
int i = 0;
|
|
int st;
|
|
|
|
if((f=fork()) == -1) {
|
|
e(1);
|
|
exit(1);
|
|
}
|
|
|
|
if(f == 0) {
|
|
/* child: use up as much memory as we can */
|
|
while((addrs[i++ % NADDRS] = minix_mmap(0, LEN, PROT_READ|PROT_WRITE,
|
|
MAP_PREALLOC|MAP_CONTIG|MAP_ANON, -1, 0)) != MAP_FAILED)
|
|
;
|
|
exit(0);
|
|
}
|
|
|
|
/* parent: wait for child */
|
|
if(waitpid(f, &st, 0) < 0)
|
|
perror("waitpid");
|
|
|
|
quit();
|
|
|
|
return(0);
|
|
}
|