static int wait_child()

in src/native/unix/native/jsvc-unix.c [732:791]

• 50 lines of code
• 12 McCabe index (conditional complexity)

static int wait_child(arg_data *args, int pid)
{
    int count = 10;
    bool havejvm = false;
    int fd;
    char buff[80];
    int i, status, waittime;

    log_debug("wait_child %d", pid);
    waittime = args->wait / 10;
    if (waittime > 10) {
        count = waittime;
        waittime = 10;
    }
    while (count > 0) {
        sleep(1);
        /* check if the controler is still running */
        if (waitpid(pid, &status, WNOHANG) == pid) {
            if (WIFEXITED(status))
                return (WEXITSTATUS(status));
            else
                return 1;
        }

        /* check if the pid file process exists */
        fd = open(args->pidf, O_RDONLY);
        if (fd < 0 && havejvm) {
            /* something has gone wrong the JVM has stopped */
            return 1;
        }
        lockf(fd, F_LOCK, 0);
        i = read(fd, buff, sizeof(buff));
        lockf(fd, F_ULOCK, 0);
        close(fd);
        if (i > 0) {
            buff[i] = '\0';
            i = atoi(buff);
            if (kill(i, 0) == 0) {
                /* the JVM process has started */
                havejvm = true;
                if (check_tmp_file(args) == 0) {
                    /* the JVM is started */
                    if (waitpid(pid, &status, WNOHANG) == pid) {
                        if (WIFEXITED(status))
                            return (WEXITSTATUS(status));
                        else
                            return 1;
                    }
                    return 0;          /* ready JVM started */
                }
            }
        }
        sleep(waittime);
        count--;
    }
    /* It takes more than the wait time to start,
     * something must be wrong
     */
    return 1;
}