UIObject::~UIObject() {
if (parent) {
parent->remove_child(this);
}
if (receiver) {
Input::Input::get_cur_object()->remove_receiver(receiver->get_name());
}
clear_child();
}
void run_epoll(int sfd, int parent)
{
struct epoll_event ev, events[MAX_EVENTS];
int nfds, n, status;
pid_t pid;
struct signalfd_siginfo fdsi;
ssize_t sz;
int epollfd = epoll_create1(EPOLL_CLOEXEC);
if (epollfd == -1) {
handle_error("epoll_create1");
}
ev.events = EPOLLIN;
ev.data.fd = sfd;
if (epoll_ctl(epollfd, EPOLL_CTL_ADD, sfd, &ev) == -1) {
handle_error("epoll_ctl: signalfd");
}
for (;;) {
nfds = epoll_wait(epollfd, events, MAX_EVENTS, -1);
if (nfds == -1) {
handle_error("epoll_wait");
}
for (n = 0; n < nfds; ++n) {
sz = read(events[n].data.fd, &fdsi, sizeof(struct signalfd_siginfo));
if (sz != sizeof(struct signalfd_siginfo))
handle_error("read");
if (fdsi.ssi_signo == SIGINT) {
fprintf(stderr, "%d: Got SIGINT from %d\n", getpid(), fdsi.ssi_pid);
} else if (fdsi.ssi_signo == SIGQUIT) {
fprintf(stderr, "%d: Got SIGQUIT from %d\n", getpid(), fdsi.ssi_pid);
if (parent) {
exiting = 1;
notify_children(SIGQUIT);
} else {
exit(EXIT_SUCCESS);
}
} else if (fdsi.ssi_signo == SIGTERM) {
fprintf(stderr, "%d: Got SIGTERM from %d\n", getpid(), fdsi.ssi_pid);
if (parent) {
exiting = 1;
notify_children(SIGTERM);
} else {
exit(EXIT_SUCCESS);
}
} else if (fdsi.ssi_signo == SIGCHLD) {
fprintf(stderr, "%d: Got SIGCHLD from %d\n", getpid(), fdsi.ssi_pid);
do {
pid = waitpid(-1, &status, WNOHANG);
if (pid > 0) {
fprintf(stderr, "%d: Process %d exited\n", getpid(), pid);
clear_child(pid);
if (!exiting) {
do_forks(1, sfd);
} else {
if (n_children == 0) {
fprintf(stderr, "%d: All children exited\n", getpid());
exit(EXIT_SUCCESS);
}
}
}
} while (pid > 0);
} else {
fprintf(stderr, "%d: Read unexpected signal from %d\n", getpid(), fdsi.ssi_pid);
}
}
}
}
