| … | |
… | |
| 40 | ev.data.u64 = fd; /* use u64 to fully initialise the struct, for nicer strace etc. */ |
40 | ev.data.u64 = fd; /* use u64 to fully initialise the struct, for nicer strace etc. */ |
| 41 | ev.events = |
41 | ev.events = |
| 42 | (nev & EV_READ ? EPOLLIN : 0) |
42 | (nev & EV_READ ? EPOLLIN : 0) |
| 43 | | (nev & EV_WRITE ? EPOLLOUT : 0); |
43 | | (nev & EV_WRITE ? EPOLLOUT : 0); |
| 44 | |
44 | |
| 45 | if (epoll_ctl (epoll_fd, mode, fd, &ev)) |
45 | if (epoll_ctl (backend_fd, mode, fd, &ev)) |
| 46 | if (errno != ENOENT /* on ENOENT the fd went away, so try to do the right thing */ |
46 | if (errno != ENOENT /* on ENOENT the fd went away, so try to do the right thing */ |
| 47 | || (nev && epoll_ctl (epoll_fd, EPOLL_CTL_ADD, fd, &ev))) |
47 | || (nev && epoll_ctl (backend_fd, EPOLL_CTL_ADD, fd, &ev))) |
| 48 | fd_kill (EV_A_ fd); |
48 | fd_kill (EV_A_ fd); |
| 49 | } |
49 | } |
| 50 | |
50 | |
| 51 | static void |
51 | static void |
| 52 | epoll_poll (EV_P_ ev_tstamp timeout) |
52 | epoll_poll (EV_P_ ev_tstamp timeout) |
| 53 | { |
53 | { |
| 54 | int i; |
54 | int i; |
| 55 | int eventcnt = epoll_wait (epoll_fd, epoll_events, epoll_eventmax, (int)ceil (timeout * 1000.)); |
55 | int eventcnt = epoll_wait (backend_fd, epoll_events, epoll_eventmax, (int)ceil (timeout * 1000.)); |
| 56 | |
56 | |
| 57 | if (eventcnt < 0) |
57 | if (eventcnt < 0) |
| 58 | { |
58 | { |
| 59 | if (errno != EINTR) |
59 | if (errno != EINTR) |
| 60 | syserr ("(libev) epoll_wait"); |
60 | syserr ("(libev) epoll_wait"); |
| … | |
… | |
| 80 | } |
80 | } |
| 81 | |
81 | |
| 82 | static int |
82 | static int |
| 83 | epoll_init (EV_P_ int flags) |
83 | epoll_init (EV_P_ int flags) |
| 84 | { |
84 | { |
| 85 | epoll_fd = epoll_create (256); |
85 | backend_fd = epoll_create (256); |
| 86 | |
86 | |
| 87 | if (epoll_fd < 0) |
87 | if (backend_fd < 0) |
| 88 | return 0; |
88 | return 0; |
| 89 | |
89 | |
| 90 | fcntl (epoll_fd, F_SETFD, FD_CLOEXEC); |
90 | fcntl (backend_fd, F_SETFD, FD_CLOEXEC); |
| 91 | |
91 | |
| 92 | backend_fudge = 1e-3; /* needed to compensate for epoll returning early */ |
92 | backend_fudge = 1e-3; /* needed to compensate for epoll returning early */ |
| 93 | backend_modify = epoll_modify; |
93 | backend_modify = epoll_modify; |
| 94 | backend_poll = epoll_poll; |
94 | backend_poll = epoll_poll; |
| 95 | |
95 | |
| … | |
… | |
| 100 | } |
100 | } |
| 101 | |
101 | |
| 102 | static void |
102 | static void |
| 103 | epoll_destroy (EV_P) |
103 | epoll_destroy (EV_P) |
| 104 | { |
104 | { |
| 105 | close (epoll_fd); |
105 | close (backend_fd); |
| 106 | |
106 | |
| 107 | ev_free (epoll_events); |
107 | ev_free (epoll_events); |
| 108 | } |
108 | } |
| 109 | |
109 | |
| 110 | static void |
110 | static void |
| 111 | epoll_fork (EV_P) |
111 | epoll_fork (EV_P) |
| 112 | { |
112 | { |
| 113 | close (epoll_fd); |
113 | close (backend_fd); |
| 114 | |
114 | |
| 115 | while ((epoll_fd = epoll_create (256)) < 0) |
115 | while ((backend_fd = epoll_create (256)) < 0) |
| 116 | syserr ("(libev) epoll_create"); |
116 | syserr ("(libev) epoll_create"); |
| 117 | |
117 | |
| 118 | fcntl (epoll_fd, F_SETFD, FD_CLOEXEC); |
118 | fcntl (backend_fd, F_SETFD, FD_CLOEXEC); |
| 119 | |
119 | |
| 120 | fd_rearm_all (EV_A); |
120 | fd_rearm_all (EV_A); |
| 121 | } |
121 | } |
| 122 | |
122 | |
