MSG_PARENT_REQUEST_CHILD_EXIT
AWAIT_INT_MESSAGE(sock_fds[0], MSG_PARENT_REQUEST_CHILD_EXIT);
SEND_INT_MESSAGE(sock_fds[1], MSG_PARENT_REQUEST_CHILD_EXIT);
AWAIT_INT_MESSAGE(pipefds[1], MSG_PARENT_REQUEST_CHILD_EXIT);
SEND_INT_MESSAGE(pipefds[0], MSG_PARENT_REQUEST_CHILD_EXIT);
AWAIT_INT_MESSAGE(pipefds[1], MSG_PARENT_REQUEST_CHILD_EXIT);
SEND_INT_MESSAGE(pipefds[0], MSG_PARENT_REQUEST_CHILD_EXIT);
AWAIT_INT_MESSAGE(pipefds[1], MSG_PARENT_REQUEST_CHILD_EXIT);
AWAIT_INT_MESSAGE(pipefds[1], MSG_PARENT_REQUEST_CHILD_EXIT);
SEND_INT_MESSAGE(pipefds[0], MSG_PARENT_REQUEST_CHILD_EXIT);
AWAIT_INT_MESSAGE(sock_fds[1], MSG_PARENT_REQUEST_CHILD_EXIT);
SEND_INT_MESSAGE(sock_fds[0], MSG_PARENT_REQUEST_CHILD_EXIT);
AWAIT_INT_MESSAGE(pipefds[1], MSG_PARENT_REQUEST_CHILD_EXIT);