2 #if defined(HAVE_EPOLL)
6 #if defined(HOST_WIN32)
7 /* We assume that epoll is not available on windows */
11 #define EPOLL_NEVENTS 128
14 static struct epoll_event *epoll_events;
17 epoll_init (gint wakeup_pipe_fd)
19 struct epoll_event event;
22 epoll_fd = epoll_create1 (EPOLL_CLOEXEC);
24 epoll_fd = epoll_create (256);
25 fcntl (epoll_fd, F_SETFD, FD_CLOEXEC);
30 g_warning ("epoll_init: epoll (EPOLL_CLOEXEC) failed, error (%d) %s\n", errno, g_strerror (errno));
32 g_warning ("epoll_init: epoll (256) failed, error (%d) %s\n", errno, g_strerror (errno));
37 event.events = EPOLLIN;
38 event.data.fd = wakeup_pipe_fd;
39 if (epoll_ctl (epoll_fd, EPOLL_CTL_ADD, event.data.fd, &event) == -1) {
40 g_warning ("epoll_init: epoll_ctl () failed, error (%d) %s", errno, g_strerror (errno));
45 epoll_events = g_new0 (struct epoll_event, EPOLL_NEVENTS);
53 g_free (epoll_events);
58 epoll_update_add (gint fd, gint events, gboolean is_new)
60 struct epoll_event event;
63 if ((events & MONO_POLLIN) != 0)
64 event.events |= EPOLLIN;
65 if ((events & MONO_POLLOUT) != 0)
66 event.events |= EPOLLOUT;
68 if (epoll_ctl (epoll_fd, is_new ? EPOLL_CTL_ADD : EPOLL_CTL_MOD, event.data.fd, &event) == -1)
69 g_warning ("epoll_update_add: epoll_ctl(%s) failed, error (%d) %s", is_new ? "EPOLL_CTL_ADD" : "EPOLL_CTL_MOD", errno, g_strerror (errno));
73 epoll_event_wait (void)
77 ready = epoll_wait (epoll_fd, epoll_events, EPOLL_NEVENTS, -1);
81 check_for_interruption_critical ();
85 g_warning ("epoll_event_wait: epoll_wait () failed, error (%d) %s", errno, g_strerror (errno));
94 epoll_event_get_fd_max (void)
100 epoll_event_get_fd_at (guint i, gint *events)
104 *events = ((epoll_events [i].events & (EPOLLIN | EPOLLERR | EPOLLHUP)) ? MONO_POLLIN : 0)
105 | ((epoll_events [i].events & (EPOLLOUT | EPOLLERR | EPOLLHUP)) ? MONO_POLLOUT : 0);
107 return epoll_events [i].data.fd;
111 epoll_event_reset_fd_at (guint i, gint events)
114 if (epoll_ctl (epoll_fd, EPOLL_CTL_DEL, epoll_events [i].data.fd, &epoll_events [i]) == -1)
115 g_warning ("epoll_event_reset_fd_at: epoll_ctl (EPOLL_CTL_DEL) failed, error (%d) %s", errno, g_strerror (errno));
117 epoll_events [i].events = ((events & MONO_POLLOUT) ? EPOLLOUT : 0)
118 | ((events & MONO_POLLIN) ? EPOLLIN : 0);
120 if (epoll_ctl (epoll_fd, EPOLL_CTL_MOD, epoll_events [i].data.fd, &epoll_events [i]) == -1)
121 g_warning ("epoll_event_get_ioares_at: epoll_ctl (EPOLL_CTL_MOD) failed, error (%d) %s", errno, g_strerror (errno));
125 static ThreadPoolIOBackend backend_epoll = {
127 .cleanup = epoll_cleanup,
128 .update_add = epoll_update_add,
129 .event_wait = epoll_event_wait,
130 .event_get_fd_max = epoll_event_get_fd_max,
131 .event_get_fd_at = epoll_event_get_fd_at,
132 .event_reset_fd_at = epoll_event_reset_fd_at,