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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); |
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41 | at = when; |
40 | at = when; |
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41 | |
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42 | if (registered) |
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43 | iom.reschedule_time_watchers (); |
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44 | else |
42 | iom.reg (this); |
45 | iom.reg (this); |
43 | } |
46 | } |
44 | |
47 | |
45 | void time_watcher::trigger () |
48 | void time_watcher::trigger () |
46 | { |
49 | { |
47 | iom.unreg (this); |
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48 | call (at); |
50 | call (at); |
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51 | |
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52 | if (registered) |
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53 | iom.reschedule_time_watchers (); |
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54 | else |
49 | iom.reg (this); |
55 | iom.reg (this); |
50 | } |
56 | } |
51 | |
57 | |
52 | void time_watcher::start () |
58 | void time_watcher::start () |
53 | { |
59 | { |
54 | iom.unreg (this); |
60 | if (!registered) |
55 | iom.reg (this); |
61 | iom.reg (this); |
56 | } |
62 | } |
57 | |
63 | |
58 | void io_manager::reg (int fd, short events, io_watcher *w) |
64 | void io_manager::reg (int fd, short events, io_watcher *w) |
59 | { |
65 | { |
60 | pollfd pfd; |
66 | pollfd pfd; |
… | |
… | |
64 | |
70 | |
65 | pfs.push_back (pfd); |
71 | pfs.push_back (pfd); |
66 | iow.push_back (w); |
72 | iow.push_back (w); |
67 | } |
73 | } |
68 | |
74 | |
69 | void io_manager::unreg (const io_watcher *w) |
75 | void io_manager::unreg (io_watcher *w) |
70 | { |
76 | { |
71 | unsigned int sz = iow.size (); |
77 | unsigned int sz = iow.size (); |
72 | unsigned int i = find (iow.begin (), iow.end (), w) - iow.begin (); |
78 | unsigned int i = find (iow.begin (), iow.end (), w) - iow.begin (); |
73 | |
79 | |
74 | if (i != sz) |
80 | if (i != sz) |
… | |
… | |
89 | pfs[i] = pfs[sz - 1]; pfs.pop_back (); |
95 | pfs[i] = pfs[sz - 1]; pfs.pop_back (); |
90 | } |
96 | } |
91 | } |
97 | } |
92 | } |
98 | } |
93 | |
99 | |
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100 | void io_manager::reschedule_time_watchers () |
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101 | { |
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102 | make_heap (tw.begin (), tw.end (), lowest_first); |
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103 | } |
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104 | |
94 | void io_manager::reg (time_watcher *w) |
105 | void io_manager::reg (time_watcher *w) |
95 | { |
106 | { |
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107 | if (w->registered) |
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108 | slog (L_CRIT, "FATAL: io_manager::reg(time_watcher) called on already-registered watcher"); |
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109 | |
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110 | w->registered = true; |
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111 | |
96 | tw.push_back (w); |
112 | tw.push_back (w); |
97 | push_heap (tw.begin (), tw.end (), lowest_first); |
113 | push_heap (tw.begin (), tw.end (), lowest_first); |
98 | } |
114 | } |
99 | |
115 | |
100 | void io_manager::unreg (const time_watcher *w) |
116 | void io_manager::unreg (time_watcher *w) |
101 | { |
117 | { |
102 | unsigned int sz = tw.size (); |
118 | if (w->registered) |
103 | unsigned int i = find (tw.begin (), tw.end (), w) - tw.begin (); |
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104 | |
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105 | if (i != sz) |
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106 | { |
119 | { |
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120 | unsigned int sz = tw.size (); |
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121 | unsigned int i = find (tw.begin (), tw.end (), w) - tw.begin (); |
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122 | |
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123 | if (i != sz) |
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124 | { |
107 | if (i != sz - 1) |
125 | if (i != sz - 1) |
108 | tw[i] = tw[sz - 1]; |
126 | tw[i] = tw[sz - 1]; |
109 | |
127 | |
110 | tw.pop_back (); |
128 | tw.pop_back (); |
111 | make_heap (tw.begin (), tw.end (), lowest_first); |
129 | reschedule_time_watchers (); |
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130 | } |
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131 | |
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132 | w->registered = false; |
112 | } |
133 | } |
113 | } |
134 | } |
114 | |
135 | |
115 | inline void set_now (void) |
136 | inline void set_now (void) |
116 | { |
137 | { |
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127 | |
148 | |
128 | for (;;) |
149 | for (;;) |
129 | { |
150 | { |
130 | while (tw[0]->at <= NOW) |
151 | while (tw[0]->at <= NOW) |
131 | { |
152 | { |
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153 | // remove the first watcher |
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154 | time_watcher *w = tw[0]; |
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155 | |
132 | pop_heap (tw.begin (), tw.end (), lowest_first); |
156 | pop_heap (tw.begin (), tw.end (), lowest_first); |
133 | time_watcher *w = *(tw.end () - 1); |
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134 | |
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135 | if (w->at >= 0) |
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136 | { |
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137 | w->call (w->at); |
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138 | push_heap (tw.begin (), tw.end (), lowest_first); |
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139 | } |
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140 | else |
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141 | tw.pop_back (); |
157 | tw.pop_back (); |
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158 | |
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159 | w->registered = false; |
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160 | |
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161 | // call it |
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162 | w->call (w->at); |
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163 | |
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164 | // re-add it if necessary |
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165 | if (w->at >= 0 && !w->registered) |
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166 | reg (w); |
142 | } |
167 | } |
143 | |
168 | |
144 | int timeout = (int) ((tw[0]->at - NOW) * 1000); |
169 | int timeout = (int) ((tw[0]->at - NOW) * 1000); |
145 | |
170 | |
146 | int fds = poll (&pfs[0], pfs.size (), timeout); |
171 | int fds = poll (&pfs[0], pfs.size (), timeout); |
147 | |
172 | |
148 | set_now (); |
173 | set_now (); |
149 | |
174 | |
150 | for (unsigned int i = iow.size (); fds > 0 && i--; ) |
175 | for (unsigned int i = 0; fds > 0 && i < iow.size (); ++i) |
151 | if (pfs[i].revents) |
176 | if (pfs[i].revents) |
152 | { |
177 | { |
153 | --fds; |
178 | --fds; |
154 | iow[i]->call (pfs[i].revents); |
179 | iow[i]->call (pfs[i].fd, pfs[i].revents); |
155 | } |
180 | } |
156 | } |
181 | } |
157 | } |
182 | } |
158 | |
183 | |
159 | void io_manager::idle_cb (tstamp &ts) |
184 | void io_manager::idle_cb (tstamp &ts) |