| … | |
… | |
| 35 | |
35 | |
| 36 | io_manager iom; |
36 | io_manager iom; |
| 37 | |
37 | |
| 38 | void time_watcher::set (tstamp when) |
38 | void time_watcher::set (tstamp when) |
| 39 | { |
39 | { |
| 40 | iom.unreg (this); |
|
|
| 41 | at = when; |
40 | at = when; |
|
|
41 | |
|
|
42 | if (registered) |
|
|
43 | iom.reschedule_time_watchers (); |
|
|
44 | else |
| 42 | iom.reg (this); |
45 | iom.reg (this); |
|
|
46 | } |
|
|
47 | |
|
|
48 | void time_watcher::trigger () |
|
|
49 | { |
|
|
50 | call (at); |
|
|
51 | |
|
|
52 | if (registered) |
|
|
53 | iom.reschedule_time_watchers (); |
|
|
54 | else |
|
|
55 | iom.reg (this); |
|
|
56 | } |
|
|
57 | |
|
|
58 | void time_watcher::start () |
|
|
59 | { |
|
|
60 | if (!registered) |
|
|
61 | iom.reg (this); |
| 43 | } |
62 | } |
| 44 | |
63 | |
| 45 | void io_manager::reg (int fd, short events, io_watcher *w) |
64 | void io_manager::reg (int fd, short events, io_watcher *w) |
| 46 | { |
65 | { |
| 47 | pollfd pfd; |
66 | pollfd pfd; |
| … | |
… | |
| 76 | pfs[i] = pfs[sz - 1]; pfs.pop_back (); |
95 | pfs[i] = pfs[sz - 1]; pfs.pop_back (); |
| 77 | } |
96 | } |
| 78 | } |
97 | } |
| 79 | } |
98 | } |
| 80 | |
99 | |
|
|
100 | void io_manager::reschedule_time_watchers () |
|
|
101 | { |
|
|
102 | make_heap (tw.begin (), tw.end (), lowest_first); |
|
|
103 | } |
|
|
104 | |
| 81 | void io_manager::reg (time_watcher *w) |
105 | void io_manager::reg (time_watcher *w) |
| 82 | { |
106 | { |
|
|
107 | if (w->registered) |
|
|
108 | slog (L_CRIT, "FATAL: io_manager::reg(time_watcher) called on already-registered watcher"); |
|
|
109 | |
|
|
110 | w->registered = true; |
|
|
111 | |
| 83 | tw.push_back (w); |
112 | tw.push_back (w); |
| 84 | push_heap (tw.begin (), tw.end (), lowest_first); |
113 | push_heap (tw.begin (), tw.end (), lowest_first); |
| 85 | } |
114 | } |
| 86 | |
115 | |
| 87 | void io_manager::unreg (time_watcher *w) |
116 | void io_manager::unreg (time_watcher *w) |
| 88 | { |
117 | { |
| 89 | unsigned int sz = tw.size (); |
118 | if (w->registered) |
| 90 | unsigned int i = find (tw.begin (), tw.end (), w) - tw.begin (); |
|
|
| 91 | |
|
|
| 92 | if (i != sz) |
|
|
| 93 | { |
119 | { |
| 94 | if (sz == 1) |
120 | unsigned int sz = tw.size (); |
| 95 | tw.clear (); |
121 | unsigned int i = find (tw.begin (), tw.end (), w) - tw.begin (); |
| 96 | else |
122 | |
|
|
123 | if (i != sz) |
| 97 | { |
124 | { |
| 98 | if (i != sz - 1) |
125 | if (i != sz - 1) |
| 99 | tw[i] = tw[sz - 1]; |
126 | tw[i] = tw[sz - 1]; |
| 100 | |
127 | |
| 101 | tw.pop_back (); |
128 | tw.pop_back (); |
| 102 | make_heap (tw.begin (), tw.end (), lowest_first); |
129 | reschedule_time_watchers (); |
| 103 | } |
130 | } |
|
|
131 | |
|
|
132 | w->registered = false; |
| 104 | } |
133 | } |
| 105 | } |
134 | } |
| 106 | |
135 | |
| 107 | inline void set_now (void) |
136 | inline void set_now (void) |
| 108 | { |
137 | { |
| … | |
… | |
| 115 | |
144 | |
| 116 | void io_manager::loop () |
145 | void io_manager::loop () |
| 117 | { |
146 | { |
| 118 | set_now (); |
147 | set_now (); |
| 119 | |
148 | |
| 120 | while (!(iow.empty () && tw.empty ())) |
149 | for (;;) |
| 121 | { |
150 | { |
| 122 | int timeout = tw.empty () |
151 | while (tw[0]->at <= NOW) |
| 123 | ? 3600 * 1000 // wake up at least every hour |
|
|
| 124 | : (int) ((tw[0]->at - NOW) * 1000); |
|
|
| 125 | |
|
|
| 126 | printf ("s%d t%d #%d\n", pfs.size (), timeout, tw.size ()); |
|
|
| 127 | |
|
|
| 128 | if (timeout >= 0) |
|
|
| 129 | { |
|
|
| 130 | int fds = poll (&pfs[0], pfs.size (), timeout); |
|
|
| 131 | |
|
|
| 132 | set_now (); |
|
|
| 133 | |
|
|
| 134 | for (unsigned int i = iow.size (); fds && i--; ) |
|
|
| 135 | if (pfs[i].revents) |
|
|
| 136 | { |
|
|
| 137 | --fds; |
|
|
| 138 | iow[i]->call (pfs[i].revents); |
|
|
| 139 | } |
|
|
| 140 | } |
152 | { |
|
|
153 | // remove the first watcher |
|
|
154 | time_watcher *w = tw[0]; |
| 141 | |
155 | |
| 142 | while (!tw.empty () && tw[0]->at <= NOW) |
|
|
| 143 | { |
|
|
| 144 | pop_heap (tw.begin (), tw.end (), lowest_first); |
156 | pop_heap (tw.begin (), tw.end (), lowest_first); |
| 145 | (*(tw.end () - 1))->trigger (); |
157 | tw.pop_back (); |
| 146 | push_heap (tw.begin (), tw.end (), lowest_first); |
158 | |
|
|
159 | w->registered = false; |
|
|
160 | |
|
|
161 | // call it |
|
|
162 | w->call (w->at); |
|
|
163 | |
|
|
164 | // re-add it if necessary |
|
|
165 | if (w->at >= 0 && !w->registered) |
|
|
166 | reg (w); |
|
|
167 | } |
|
|
168 | |
|
|
169 | int timeout = (int) ((tw[0]->at - NOW) * 1000); |
|
|
170 | |
|
|
171 | int fds = poll (&pfs[0], pfs.size (), timeout); |
|
|
172 | |
|
|
173 | set_now (); |
|
|
174 | |
|
|
175 | for (unsigned int i = iow.size (); fds > 0 && i--; ) |
|
|
176 | if (pfs[i].revents) |
|
|
177 | { |
|
|
178 | --fds; |
|
|
179 | iow[i]->call (pfs[i].revents); |
| 147 | } |
180 | } |
| 148 | } |
181 | } |
| 149 | } |
182 | } |
| 150 | |
183 | |
|
|
184 | void io_manager::idle_cb (tstamp &ts) |
|
|
185 | { |
|
|
186 | ts = NOW + 86400; // wake up every day, for no good reason |
|
|
187 | } |
|
|
188 | |
| 151 | io_manager::io_manager () |
189 | io_manager::io_manager () |
| 152 | { |
190 | { |
| 153 | set_now (); |
191 | set_now (); |
|
|
192 | idle = new time_watcher (this, &io_manager::idle_cb); |
|
|
193 | idle->start (0); |
| 154 | } |
194 | } |
| 155 | |
195 | |
| 156 | io_manager::~io_manager () |
196 | io_manager::~io_manager () |
| 157 | { |
197 | { |
| 158 | // |
198 | // |
