/* CS 2SC3 / SE 2S03 testcase runtime limitation utility -- Pouya Larjani */

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

int main(int argc, char *argv[])
{
    pid_t child, ret;
    int stat, i;

    if (argc == 1)
        exit(0);

    child = fork();
    if (child == -1)
        exit(-1);
    else if (child == 0)
        execvp(argv[1], &argv[1]);
    else
    {
        for (i=0; i<10; i++)
        {
            ret = waitpid(child, &stat, WNOHANG);
            if (ret == 0)
                sleep(1);
            else
                break;
        }

        if (ret == 0)
            ret = waitpid(child, &stat, WNOHANG);

        if (ret == 0)
        {
            kill(child, SIGTERM);
            sleep(1);
            ret = waitpid(child, &stat, WNOHANG);
        }

        if ((ret == 0) || !WIFEXITED(stat))
            exit(-1);

        return WEXITSTATUS(stat);
    }

    return -1;
}