/* hold.c - malloc and touch 1 MB, attach 1 MB shm, then wait, so svmon can look. */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/ipc.h>
#include <sys/shm.h>
int main(void){ char *p = malloc(1<<20); long i; int id; void *s;
  for (i = 0; i < (1<<20); i += 4096) p[i] = 1;
  id = shmget(IPC_PRIVATE, 1<<20, IPC_CREAT|0600); s = shmat(id, 0, 0); shmctl(id, IPC_RMID, 0); ((char*)s)[0] = 1;
  printf("pid %d heap %p shm %p\n", (int)getpid(), (void*)p, s); fflush(stdout); sleep(240); return 0; }