P:\test>perl -wle"system(1,'notepad')==-1 && print qq[failed $_ process with: $!] for 1..65"
failed 65 process with: Resource temporarily unavailable

##</code><code>##

    case P_NOWAIT:	/* asynch + remember result */
	if (w32_num_children >= MAXIMUM_WAIT_OBJECTS) {
	    errno = EAGAIN;
	    ret = -1;
	    goto RETVAL;
	}
...
    if (mode == P_NOWAIT) {
        /* asynchronous spawn -- store handle, return PID */
        ret = (int)ProcessInformation.dwProcessId;
        if (IsWin95() && ret < 0)
            ret = -ret;

        w32_child_handles[w32_num_children] = ProcessInformation.hProcess;
        w32_child_pids[w32_num_children] = (DWORD)ret;
        ++w32_num_children;
    }