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37 | static void |
37 | static void |
38 | kqueue_change (EV_P_ int fd, int filter, int flags, int fflags) |
38 | kqueue_change (EV_P_ int fd, int filter, int flags, int fflags) |
39 | { |
39 | { |
40 | struct kevent *ke; |
40 | struct kevent *ke; |
41 | |
41 | |
42 | array_needsize (kqueue_changes, kqueue_changemax, ++kqueue_changecnt, ); |
42 | array_needsize (struct kevent, kqueue_changes, kqueue_changemax, ++kqueue_changecnt, ); |
43 | |
43 | |
44 | ke = &kqueue_changes [kqueue_changecnt - 1]; |
44 | ke = &kqueue_changes [kqueue_changecnt - 1]; |
45 | memset (ke, 0, sizeof (struct kevent)); |
45 | memset (ke, 0, sizeof (struct kevent)); |
46 | ke->ident = fd; |
46 | ke->ident = fd; |
47 | ke->filter = filter; |
47 | ke->filter = filter; |
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54 | #endif |
54 | #endif |
55 | |
55 | |
56 | static void |
56 | static void |
57 | kqueue_modify (EV_P_ int fd, int oev, int nev) |
57 | kqueue_modify (EV_P_ int fd, int oev, int nev) |
58 | { |
58 | { |
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59 | /* to detect close/reopen reliably, we have to remove and re-add */ |
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60 | /* event requests even when oev == nev */ |
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61 | |
59 | if ((oev ^ nev) & EV_READ) |
62 | if (oev & EV_READ) |
60 | { |
63 | kqueue_change (EV_A_ fd, EVFILT_READ, EV_DELETE, 0); |
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64 | |
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65 | if (oev & EV_WRITE) |
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66 | kqueue_change (EV_A_ fd, EVFILT_WRITE, EV_DELETE, 0); |
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67 | |
61 | if (nev & EV_READ) |
68 | if (nev & EV_READ) |
62 | kqueue_change (fd, EVFILT_READ, EV_ADD, NOTE_EOF); |
69 | kqueue_change (EV_A_ fd, EVFILT_READ, EV_ADD, NOTE_EOF); |
63 | else |
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64 | kqueue_change (fd, EVFILT_READ, EV_DELETE, 0); |
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65 | } |
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66 | |
70 | |
67 | if ((oev ^ nev) & EV_WRITE) |
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68 | { |
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69 | if (nev & EV_WRITE) |
71 | if (nev & EV_WRITE) |
70 | kqueue_change (fd, EVFILT_WRITE, EV_ADD, NOTE_EOF); |
72 | kqueue_change (EV_A_ fd, EVFILT_WRITE, EV_ADD, NOTE_EOF); |
71 | else |
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72 | kqueue_change (fd, EVFILT_WRITE, EV_DELETE, 0); |
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73 | } |
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74 | } |
73 | } |
75 | |
74 | |
76 | static void |
75 | static void |
77 | kqueue_poll (EV_P_ ev_tstamp timeout) |
76 | kqueue_poll (EV_P_ ev_tstamp timeout) |
78 | { |
77 | { |
79 | int res, i; |
78 | int res, i; |
80 | struct timespec ts; |
79 | struct timespec ts; |
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80 | |
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81 | /* need to resize so there is enough space for errors */ |
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82 | if (kqueue_changecnt > kqueue_eventmax) |
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83 | { |
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84 | ev_free (kqueue_events); |
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85 | kqueue_eventmax = array_roundsize (struct kevent, kqueue_changecnt); |
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86 | kqueue_events = ev_malloc (sizeof (struct kevent) * kqueue_eventmax); |
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87 | } |
81 | |
88 | |
82 | ts.tv_sec = (time_t)timeout; |
89 | ts.tv_sec = (time_t)timeout; |
83 | ts.tv_nsec = (long)(timeout - (ev_tstamp)ts.tv_sec) * 1e9; |
90 | ts.tv_nsec = (long)(timeout - (ev_tstamp)ts.tv_sec) * 1e9; |
84 | res = kevent (kqueue_fd, kqueue_changes, kqueue_changecnt, kqueue_events, kqueue_eventmax, &ts); |
91 | res = kevent (kqueue_fd, kqueue_changes, kqueue_changecnt, kqueue_events, kqueue_eventmax, &ts); |
85 | kqueue_changecnt = 0; |
92 | kqueue_changecnt = 0; |
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92 | return; |
99 | return; |
93 | } |
100 | } |
94 | |
101 | |
95 | for (i = 0; i < res; ++i) |
102 | for (i = 0; i < res; ++i) |
96 | { |
103 | { |
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104 | int fd = kqueue_events [i].ident; |
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105 | |
97 | if (kqueue_events [i].flags & EV_ERROR) |
106 | if (kqueue_events [i].flags & EV_ERROR) |
98 | { |
107 | { |
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108 | int err = kqueue_events [i].data; |
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109 | |
99 | /* |
110 | /* |
100 | * Error messages that can happen, when a delete fails. |
111 | * errors that may happen |
101 | * EBADF happens when the file discriptor has been |
112 | * EBADF happens when the file discriptor has been |
102 | * closed, |
113 | * closed, |
103 | * ENOENT when the file discriptor was closed and |
114 | * ENOENT when the file descriptor was closed and |
104 | * then reopened. |
115 | * then reopened. |
105 | * EINVAL for some reasons not understood; EINVAL |
116 | * EINVAL for some reasons not understood; EINVAL |
106 | * should not be returned ever; but FreeBSD does :-\ |
117 | * should not be returned ever; but FreeBSD does :-\ |
107 | * An error is also indicated when a callback deletes |
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108 | * an event we are still processing. In that case |
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109 | * the data field is set to ENOENT. |
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110 | */ |
118 | */ |
111 | if (kqueue_events [i].data == EBADF) |
119 | |
112 | fd_kill (EV_A_ kqueue_events [i].ident); |
120 | /* we are only interested in errors for fds that we are interested in :) */ |
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121 | if (anfds [fd].events) |
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122 | { |
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123 | if (err == ENOENT) /* resubmit changes on ENOENT */ |
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124 | kqueue_modify (EV_A_ fd, 0, anfds [fd].events); |
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125 | else if (err == EBADF) /* on EBADF, we re-check the fd */ |
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126 | { |
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127 | if (fd_valid (fd)) |
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128 | kqueue_modify (EV_A_ fd, 0, anfds [fd].events); |
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129 | else |
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130 | fd_kill (EV_A_ fd); |
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131 | } |
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132 | else /* on all other errors, we error out on the fd */ |
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133 | fd_kill (EV_A_ fd); |
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134 | } |
113 | } |
135 | } |
114 | else |
136 | else |
115 | fd_event ( |
137 | fd_event ( |
116 | EV_A_ |
138 | EV_A_ |
117 | kqueue_events [i].ident, |
139 | fd, |
118 | kqueue_events [i].filter == EVFILT_READ ? EV_READ |
140 | kqueue_events [i].filter == EVFILT_READ ? EV_READ |
119 | : kqueue_events [i].filter == EVFILT_WRITE ? EV_WRITE |
141 | : kqueue_events [i].filter == EVFILT_WRITE ? EV_WRITE |
120 | : 0 |
142 | : 0 |
121 | ); |
143 | ); |
122 | } |
144 | } |
123 | |
145 | |
124 | if (expect_false (res == kqueue_eventmax)) |
146 | if (expect_false (res == kqueue_eventmax)) |
125 | { |
147 | { |
126 | ev_free (kqueue_events); |
148 | ev_free (kqueue_events); |
127 | kqueue_eventmax = array_roundsize (kqueue_events, kqueue_eventmax << 1); |
149 | kqueue_eventmax = array_roundsize (struct kevent, kqueue_eventmax << 1); |
128 | kqueue_events = ev_malloc (sizeof (struct kevent) * kqueue_eventmax); |
150 | kqueue_events = ev_malloc (sizeof (struct kevent) * kqueue_eventmax); |
129 | } |
151 | } |
130 | } |
152 | } |
131 | |
153 | |
132 | static int |
154 | static int |
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… | |
183 | } |
205 | } |
184 | |
206 | |
185 | static void |
207 | static void |
186 | kqueue_fork (EV_P) |
208 | kqueue_fork (EV_P) |
187 | { |
209 | { |
188 | for (;;) |
210 | close (kqueue_fd); |
189 | { |
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190 | kqueue_fd = kqueue (); |
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191 | |
211 | |
192 | if (kqueue_fd >= 0) |
212 | while ((kqueue_fd = kqueue ()) < 0) |
193 | break; |
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194 | |
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195 | syserr ("(libev) kqueue"); |
213 | syserr ("(libev) kqueue"); |
196 | } |
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197 | |
214 | |
198 | fcntl (kqueue_fd, F_SETFD, FD_CLOEXEC); |
215 | fcntl (kqueue_fd, F_SETFD, FD_CLOEXEC); |
199 | |
216 | |
200 | /* re-register interest in fds */ |
217 | /* re-register interest in fds */ |
201 | fd_rearm_all (EV_A); |
218 | fd_rearm_all (EV_A); |