| … | |
… | |
| 68 | /* |
68 | /* |
| 69 | * we handle EPOLL_CTL_DEL by ignoring it here |
69 | * we handle EPOLL_CTL_DEL by ignoring it here |
| 70 | * on the assumption that the fd is gone anyways |
70 | * on the assumption that the fd is gone anyways |
| 71 | * if that is wrong, we have to handle the spurious |
71 | * if that is wrong, we have to handle the spurious |
| 72 | * event in epoll_poll. |
72 | * event in epoll_poll. |
| 73 | * the fd is later added, we try to ADD it, and, if that |
73 | * if the fd is added again, we try to ADD it, and, if that |
| 74 | * fails, we assume it still has the same eventmask. |
74 | * fails, we assume it still has the same eventmask. |
| 75 | */ |
75 | */ |
| 76 | if (!nev) |
76 | if (!nev) |
| 77 | return; |
77 | return; |
| 78 | |
78 | |
| 79 | oldmask = anfds [fd].emask; |
79 | oldmask = anfds [fd].emask; |
| 80 | anfds [fd].emask = nev; |
80 | anfds [fd].emask = nev; |
| 81 | |
81 | |
| 82 | /* store the generation counter in the upper 32 bits */ |
82 | /* store the generation counter in the upper 32 bits, the fd in the lower 32 bits */ |
| 83 | ev.data.u64 = (uint64_t)(uint32_t)fd | ((uint64_t)(uint32_t)++anfds [fd].egen << 32); |
83 | ev.data.u64 = (uint64_t)(uint32_t)fd |
|
|
84 | | ((uint64_t)(uint32_t)++anfds [fd].egen << 32); |
| 84 | ev.events = (nev & EV_READ ? EPOLLIN : 0) |
85 | ev.events = (nev & EV_READ ? EPOLLIN : 0) |
| 85 | | (nev & EV_WRITE ? EPOLLOUT : 0); |
86 | | (nev & EV_WRITE ? EPOLLOUT : 0); |
| 86 | |
87 | |
| 87 | if (expect_true (!epoll_ctl (backend_fd, oev ? EPOLL_CTL_MOD : EPOLL_CTL_ADD, fd, &ev))) |
88 | if (expect_true (!epoll_ctl (backend_fd, oev ? EPOLL_CTL_MOD : EPOLL_CTL_ADD, fd, &ev))) |
| 88 | return; |
89 | return; |
| … | |
… | |
| 116 | |
117 | |
| 117 | static void |
118 | static void |
| 118 | epoll_poll (EV_P_ ev_tstamp timeout) |
119 | epoll_poll (EV_P_ ev_tstamp timeout) |
| 119 | { |
120 | { |
| 120 | int i; |
121 | int i; |
|
|
122 | int eventcnt; |
|
|
123 | |
|
|
124 | if (expect_false (suspend_cb)) suspend_cb (EV_A); |
| 121 | int eventcnt = epoll_wait (backend_fd, epoll_events, epoll_eventmax, (int)ceil (timeout * 1000.)); |
125 | eventcnt = epoll_wait (backend_fd, epoll_events, epoll_eventmax, (int)ceil (timeout * 1000.)); |
|
|
126 | if (expect_false (resume_cb)) resume_cb (EV_A); |
| 122 | |
127 | |
| 123 | if (expect_false (eventcnt < 0)) |
128 | if (expect_false (eventcnt < 0)) |
| 124 | { |
129 | { |
| 125 | if (errno != EINTR) |
130 | if (errno != EINTR) |
| 126 | ev_syserr ("(libev) epoll_wait"); |
131 | ev_syserr ("(libev) epoll_wait"); |
