#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <sys/types.h>
#include <signal.h>
#include <sched.h>


pid_t pid0, pid1, pid2;
char * stack1, * stack2;

#define STACKSIZE 1024*8*4

struct sigcall{
  int sig;
  pid_t pid;
} siglist[1024];
int nsig = 0;

printfsiglist()
{
  int i;
  for (i = 0; i< nsig; i++) 
    printf("%d:: %d: %d %d\n", getpid(), i, siglist[nsig].pid, siglist[nsig].sig);
};

void sighand(int sig)
{
  siglist[nsig].pid = getpid();
  siglist[nsig].sig = sig;
  nsig++;
}

int clone2()
{

  pid2 = getpid();
  printf("clone2 has pid %d\n", pid2);

  sleep(100);
  printfsiglist();
};


int clone1()
{
  char * stack;

  pid1 = getpid();
  printf("clone1 has pid %d\n", pid1);

  sleep(10);
  printfsiglist();
  return;
  exit(0);
};

main()
{
  char * stack;
  int x, rc;
  pid0 = getpid();
  printf("clone0 has pid %d\n", pid0);

  signal(SIGCHLD, sighand);
  signal(SIGALRM, sighand);
  stack1 = malloc(STACKSIZE);
  stack2 = malloc(STACKSIZE);
  stack1 += STACKSIZE;
  stack2 += STACKSIZE;
  pid1 = __clone(clone1, stack1, CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND, NULL);
  pid2 = __clone(clone2, stack2, CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND, NULL);

  sleep(1);
  printf("master: clone0 has pid %d\n", pid0);
  printf("master: clone1 has pid %d\n", pid1);
  printf("master: clone2 has pid %d\n", pid2);

  exit(2);


};