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29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
30 | */ |
30 | */ |
31 | |
31 | |
32 | #include <sys/epoll.h> |
32 | #include <sys/epoll.h> |
33 | |
33 | |
34 | static int epoll_fd = -1; |
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35 | |
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36 | static void |
34 | static void |
37 | epoll_modify (int fd, int oev, int nev) |
35 | epoll_modify (EV_P_ int fd, int oev, int nev) |
38 | { |
36 | { |
39 | int mode = nev ? oev ? EPOLL_CTL_MOD : EPOLL_CTL_ADD : EPOLL_CTL_DEL; |
37 | int mode = nev ? oev ? EPOLL_CTL_MOD : EPOLL_CTL_ADD : EPOLL_CTL_DEL; |
40 | |
38 | |
41 | struct epoll_event ev; |
39 | struct epoll_event ev; |
42 | 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. */ |
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46 | |
44 | |
47 | epoll_ctl (epoll_fd, mode, fd, &ev); |
45 | epoll_ctl (epoll_fd, mode, fd, &ev); |
48 | } |
46 | } |
49 | |
47 | |
50 | static void |
48 | static void |
51 | epoll_postfork_child (void) |
49 | epoll_postfork_child (EV_P) |
52 | { |
50 | { |
53 | int fd; |
51 | int fd; |
54 | |
52 | |
55 | epoll_fd = epoll_create (256); |
53 | epoll_fd = epoll_create (256); |
56 | fcntl (epoll_fd, F_SETFD, FD_CLOEXEC); |
54 | fcntl (epoll_fd, F_SETFD, FD_CLOEXEC); |
57 | |
55 | |
58 | /* re-register interest in fds */ |
56 | /* re-register interest in fds */ |
59 | for (fd = 0; fd < anfdmax; ++fd) |
57 | for (fd = 0; fd < anfdmax; ++fd) |
60 | if (anfds [fd].events)//D |
58 | if (anfds [fd].events)//D |
61 | epoll_modify (fd, EV_NONE, anfds [fd].events); |
59 | epoll_modify (EV_A_ fd, EV_NONE, anfds [fd].events); |
62 | } |
60 | } |
63 | |
61 | |
64 | static struct epoll_event *events; |
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65 | static int eventmax; |
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66 | |
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67 | static void |
62 | static void |
68 | epoll_poll (ev_tstamp timeout) |
63 | epoll_poll (EV_P_ ev_tstamp timeout) |
69 | { |
64 | { |
70 | int eventcnt = epoll_wait (epoll_fd, events, eventmax, ceil (timeout * 1000.)); |
65 | int eventcnt = epoll_wait (epoll_fd, events, eventmax, ceil (timeout * 1000.)); |
71 | int i; |
66 | int i; |
72 | |
67 | |
73 | if (eventcnt < 0) |
68 | if (eventcnt < 0) |
74 | return; |
69 | return; |
75 | |
70 | |
76 | for (i = 0; i < eventcnt; ++i) |
71 | for (i = 0; i < eventcnt; ++i) |
77 | fd_event ( |
72 | fd_event ( |
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73 | EV_A_ |
78 | events [i].data.fd, |
74 | events [i].data.u64, |
79 | (events [i].events & (EPOLLOUT | EPOLLERR | EPOLLHUP) ? EV_WRITE : 0) |
75 | (events [i].events & (EPOLLOUT | EPOLLERR | EPOLLHUP) ? EV_WRITE : 0) |
80 | | (events [i].events & (EPOLLIN | EPOLLERR | EPOLLHUP) ? EV_READ : 0) |
76 | | (events [i].events & (EPOLLIN | EPOLLERR | EPOLLHUP) ? EV_READ : 0) |
81 | ); |
77 | ); |
82 | |
78 | |
83 | /* if the receive array was full, increase its size */ |
79 | /* if the receive array was full, increase its size */ |
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87 | eventmax = array_roundsize (events, eventmax << 1); |
83 | eventmax = array_roundsize (events, eventmax << 1); |
88 | events = malloc (sizeof (struct epoll_event) * eventmax); |
84 | events = malloc (sizeof (struct epoll_event) * eventmax); |
89 | } |
85 | } |
90 | } |
86 | } |
91 | |
87 | |
92 | static void |
88 | static int |
93 | epoll_init (int flags) |
89 | epoll_init (EV_P_ int flags) |
94 | { |
90 | { |
95 | epoll_fd = epoll_create (256); |
91 | epoll_fd = epoll_create (256); |
96 | |
92 | |
97 | if (epoll_fd < 0) |
93 | if (epoll_fd < 0) |
98 | return; |
94 | return 0; |
99 | |
95 | |
100 | fcntl (epoll_fd, F_SETFD, FD_CLOEXEC); |
96 | fcntl (epoll_fd, F_SETFD, FD_CLOEXEC); |
101 | |
97 | |
102 | ev_method = EVMETHOD_EPOLL; |
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103 | method_fudge = 1e-3; /* needed to compensate for epoll returning early */ |
98 | method_fudge = 1e-3; /* needed to compensate for epoll returning early */ |
104 | method_modify = epoll_modify; |
99 | method_modify = epoll_modify; |
105 | method_poll = epoll_poll; |
100 | method_poll = epoll_poll; |
106 | |
101 | |
107 | eventmax = 64; /* intiial number of events receivable per poll */ |
102 | eventmax = 64; /* intiial number of events receivable per poll */ |
108 | events = malloc (sizeof (struct epoll_event) * eventmax); |
103 | events = malloc (sizeof (struct epoll_event) * eventmax); |
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104 | |
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105 | return EVMETHOD_EPOLL; |
109 | } |
106 | } |
110 | |
107 | |