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_error ("epoll_init: epoll (EPOLL_CLOEXEC) failed, error (%d) %s\n", errno, g_strerror (errno));
32 g_error ("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_error ("epoll_init: epoll_ctl () failed, error (%d) %s", errno, g_strerror (errno));
45 epoll_events = g_new0 (struct epoll_event, EPOLL_NEVENTS);
51 epoll_register_fd (gint fd, gint events, gboolean is_new)
53 struct epoll_event event;
56 /* it was only defined on android in May 2013 */
57 #define EPOLLONESHOT 0x40000000
61 event.events = EPOLLONESHOT;
62 if ((events & EVENT_IN) != 0)
63 event.events |= EPOLLIN;
64 if ((events & EVENT_OUT) != 0)
65 event.events |= EPOLLOUT;
67 if (epoll_ctl (epoll_fd, is_new ? EPOLL_CTL_ADD : EPOLL_CTL_MOD, event.data.fd, &event) == -1)
68 g_error ("epoll_register_fd: epoll_ctl(%s) failed, error (%d) %s", is_new ? "EPOLL_CTL_ADD" : "EPOLL_CTL_MOD", errno, g_strerror (errno));
72 epoll_remove_fd (gint fd)
74 if (epoll_ctl (epoll_fd, EPOLL_CTL_DEL, fd, NULL) == -1)
75 g_error ("epoll_remove_fd: epoll_ctl (EPOLL_CTL_DEL) failed, error (%d) %s", errno, g_strerror (errno));
79 epoll_event_wait (void (*callback) (gint fd, gint events, gpointer user_data), gpointer user_data)
83 memset (epoll_events, 0, sizeof (struct epoll_event) * EPOLL_NEVENTS);
85 mono_gc_set_skip_thread (TRUE);
88 ready = epoll_wait (epoll_fd, epoll_events, EPOLL_NEVENTS, -1);
91 mono_gc_set_skip_thread (FALSE);
99 g_error ("epoll_event_wait: epoll_wait () failed, error (%d) %s", errno, g_strerror (errno));
107 for (i = 0; i < ready; ++i) {
110 fd = epoll_events [i].data.fd;
111 if (epoll_events [i].events & (EPOLLIN | EPOLLERR | EPOLLHUP))
113 if (epoll_events [i].events & (EPOLLOUT | EPOLLERR | EPOLLHUP))
116 callback (fd, events, user_data);
122 static ThreadPoolIOBackend backend_epoll = {
124 .register_fd = epoll_register_fd,
125 .remove_fd = epoll_remove_fd,
126 .event_wait = epoll_event_wait,