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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 |
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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; |
… | |
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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; |
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122 | int eventcnt; |
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123 | |
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124 | EV_RELEASE_CB; |
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.)); |
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126 | EV_ACQUIRE_CB; |
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"); |