| … | |
… | |
| 24 | #include <functional> |
24 | #include <functional> |
| 25 | |
25 | |
| 26 | #include "slog.h" |
26 | #include "slog.h" |
| 27 | #include "iom.h" |
27 | #include "iom.h" |
| 28 | |
28 | |
| 29 | inline bool lowest_first (const time_watcher *a, const time_watcher *b) |
29 | inline bool earliest_first (const time_watcher *a, const time_watcher *b) |
| 30 | { |
30 | { |
| 31 | return a->at > b->at; |
31 | return a->at > b->at; |
| 32 | } |
32 | } |
| 33 | |
33 | |
| 34 | tstamp NOW; |
34 | tstamp NOW; |
| … | |
… | |
| 45 | iom.reg (this); |
45 | iom.reg (this); |
| 46 | } |
46 | } |
| 47 | |
47 | |
| 48 | void time_watcher::trigger () |
48 | void time_watcher::trigger () |
| 49 | { |
49 | { |
| 50 | call (at); |
50 | call (*this); |
| 51 | |
51 | |
| 52 | if (registered) |
52 | if (registered) |
| 53 | iom.reschedule_time_watchers (); |
53 | iom.reschedule_time_watchers (); |
| 54 | else |
54 | else |
| 55 | iom.reg (this); |
55 | iom.reg (this); |
| … | |
… | |
| 59 | { |
59 | { |
| 60 | if (!registered) |
60 | if (!registered) |
| 61 | iom.reg (this); |
61 | iom.reg (this); |
| 62 | } |
62 | } |
| 63 | |
63 | |
| 64 | void io_manager::reg (int fd, short events, io_watcher *w) |
64 | void io_manager::reg (io_watcher *w) |
| 65 | { |
65 | { |
| 66 | pollfd pfd; |
66 | pollfd pfd; |
| 67 | |
67 | |
| 68 | pfd.fd = fd; |
68 | pfd.fd = w->fd; |
| 69 | pfd.events = events; |
69 | pfd.events = w->events; |
| 70 | |
70 | |
| 71 | pfs.push_back (pfd); |
71 | pfs.push_back (pfd); |
| 72 | iow.push_back (w); |
72 | iow.push_back (w); |
| 73 | } |
73 | } |
| 74 | |
74 | |
| 75 | void io_manager::unreg (const io_watcher *w) |
75 | void io_manager::unreg (io_watcher *w) |
| 76 | { |
76 | { |
| 77 | unsigned int sz = iow.size (); |
77 | unsigned int sz = iow.size (); |
| 78 | unsigned int i = find (iow.begin (), iow.end (), w) - iow.begin (); |
78 | unsigned int i = find (iow.begin (), iow.end (), w) - iow.begin (); |
| 79 | |
79 | |
| 80 | if (i != sz) |
80 | if (i != sz) |
| … | |
… | |
| 97 | } |
97 | } |
| 98 | } |
98 | } |
| 99 | |
99 | |
| 100 | void io_manager::reschedule_time_watchers () |
100 | void io_manager::reschedule_time_watchers () |
| 101 | { |
101 | { |
| 102 | make_heap (tw.begin (), tw.end (), lowest_first); |
102 | make_heap (tw.begin (), tw.end (), earliest_first); |
| 103 | } |
103 | } |
| 104 | |
104 | |
| 105 | void io_manager::reg (time_watcher *w) |
105 | void io_manager::reg (time_watcher *w) |
| 106 | { |
106 | { |
| 107 | if (w->registered) |
107 | if (w->registered) |
| 108 | slog (L_CRIT, "FATAL: io_manager::reg(time_watcher) called on already-registered watcher"); |
108 | slog (L_CRIT, "FATAL: io_manager::reg(time_watcher) called on already-registered watcher"); |
| 109 | |
109 | |
|
|
110 | w->registered = true; |
|
|
111 | |
| 110 | tw.push_back (w); |
112 | tw.push_back (w); |
| 111 | push_heap (tw.begin (), tw.end (), lowest_first); |
113 | push_heap (tw.begin (), tw.end (), earliest_first); |
| 112 | } |
114 | } |
| 113 | |
115 | |
| 114 | void io_manager::unreg (const time_watcher *w) |
116 | void io_manager::unreg (time_watcher *w) |
| 115 | { |
117 | { |
| 116 | unsigned int sz = tw.size (); |
118 | if (w->registered) |
| 117 | unsigned int i = find (tw.begin (), tw.end (), w) - tw.begin (); |
|
|
| 118 | |
|
|
| 119 | if (i != sz) |
|
|
| 120 | { |
119 | { |
|
|
120 | unsigned int sz = tw.size (); |
|
|
121 | unsigned int i = find (tw.begin (), tw.end (), w) - tw.begin (); |
|
|
122 | |
|
|
123 | if (i != sz) |
|
|
124 | { |
| 121 | if (i != sz - 1) |
125 | if (i != sz - 1) |
| 122 | tw[i] = tw[sz - 1]; |
126 | tw[i] = tw[sz - 1]; |
| 123 | |
127 | |
| 124 | tw.pop_back (); |
128 | tw.pop_back (); |
| 125 | reschedule_time_watchers (); |
129 | reschedule_time_watchers (); |
|
|
130 | } |
|
|
131 | |
|
|
132 | w->registered = false; |
| 126 | } |
133 | } |
| 127 | } |
134 | } |
| 128 | |
135 | |
| 129 | inline void set_now (void) |
136 | inline void set_now (void) |
| 130 | { |
137 | { |
| … | |
… | |
| 141 | |
148 | |
| 142 | for (;;) |
149 | for (;;) |
| 143 | { |
150 | { |
| 144 | while (tw[0]->at <= NOW) |
151 | while (tw[0]->at <= NOW) |
| 145 | { |
152 | { |
|
|
153 | // remove the first watcher |
|
|
154 | time_watcher *w = tw[0]; |
|
|
155 | |
| 146 | pop_heap (tw.begin (), tw.end (), lowest_first); |
156 | pop_heap (tw.begin (), tw.end (), earliest_first); |
| 147 | time_watcher *w = *(tw.end () - 1); |
|
|
| 148 | tw.pop_back (); |
157 | tw.pop_back (); |
| 149 | |
158 | |
| 150 | if (w->at >= 0) |
159 | w->registered = false; |
| 151 | { |
160 | |
|
|
161 | // call it |
| 152 | w->call (w->at); |
162 | w->call (*w); |
| 153 | |
163 | |
|
|
164 | // re-add it if necessary |
| 154 | if (!w->registered) |
165 | if (w->at >= 0 && !w->registered) |
| 155 | reg (w); |
166 | reg (w); |
| 156 | } |
|
|
| 157 | } |
167 | } |
| 158 | |
168 | |
| 159 | int timeout = (int) ((tw[0]->at - NOW) * 1000); |
169 | int timeout = (int) ((tw[0]->at - NOW) * 1000); |
| 160 | |
170 | |
| 161 | int fds = poll (&pfs[0], pfs.size (), timeout); |
171 | int fds = poll (&pfs[0], pfs.size (), timeout); |
| 162 | |
172 | |
| 163 | set_now (); |
173 | set_now (); |
| 164 | |
174 | |
| 165 | for (unsigned int i = iow.size (); fds > 0 && i--; ) |
175 | vector<io_watcher *>::iterator w; |
|
|
176 | vector<pollfd>::iterator p; |
|
|
177 | |
|
|
178 | for (w = iow.begin (), p = pfs.begin (); |
|
|
179 | fds > 0 && w < iow.end (); |
|
|
180 | ++w, ++p) |
| 166 | if (pfs[i].revents) |
181 | if (p->revents) |
| 167 | { |
182 | { |
| 168 | --fds; |
183 | --fds; |
| 169 | iow[i]->call (pfs[i].revents); |
184 | (*w)->call (**w, p->revents); |
| 170 | } |
185 | } |
| 171 | } |
186 | } |
| 172 | } |
187 | } |
| 173 | |
188 | |
| 174 | void io_manager::idle_cb (tstamp &ts) |
189 | void io_manager::idle_cb (time_watcher &w) |
| 175 | { |
190 | { |
| 176 | ts = NOW + 86400; // wake up every day, for no good reason |
191 | w.at = NOW + 86400; // wake up every day, for no good reason |
| 177 | } |
192 | } |
| 178 | |
193 | |
| 179 | io_manager::io_manager () |
194 | io_manager::io_manager () |
| 180 | { |
195 | { |
| 181 | set_now (); |
196 | set_now (); |
