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28 | |
28 | |
29 | tstamp NOW; |
29 | tstamp NOW; |
30 | bool iom_valid; |
30 | bool iom_valid; |
31 | io_manager iom; |
31 | io_manager iom; |
32 | |
32 | |
33 | void time_watcher::trigger () |
33 | template<class watcher> |
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34 | void io_manager::reg (watcher *w, simplevec<watcher *> &queue) |
34 | { |
35 | { |
35 | call (*this); |
36 | if (find (queue.begin (), queue.end (), w) == queue.end ()) |
36 | |
37 | queue.push_back (w); |
37 | iom.reg (this); |
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38 | } |
38 | } |
39 | |
39 | |
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40 | template<class watcher> |
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41 | void io_manager::unreg (watcher *w, simplevec<watcher *> &queue) |
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42 | { |
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43 | queue.erase (find (queue.begin (), queue.end (), w)); |
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44 | } |
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45 | |
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46 | #if IOM_IO |
40 | time_watcher::~time_watcher () |
47 | io_watcher::~io_watcher () |
41 | { |
48 | { |
42 | if (iom_valid) |
49 | if (iom_valid) |
43 | iom.unreg (this); |
50 | iom.unreg (this); |
44 | } |
51 | } |
45 | |
52 | |
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53 | void io_manager::reg (io_watcher *w) |
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54 | { |
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55 | reg (w, iow); |
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56 | } |
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57 | |
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58 | void io_manager::unreg (io_watcher *w) |
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59 | { |
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60 | unreg (w, iow); |
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61 | } |
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62 | |
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63 | #endif |
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64 | |
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65 | #if IOM_TIME |
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66 | void time_watcher::trigger () |
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67 | { |
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68 | call (*this); |
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69 | |
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70 | iom.reg (this); |
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71 | } |
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72 | |
46 | io_watcher::~io_watcher () |
73 | time_watcher::~time_watcher () |
47 | { |
74 | { |
48 | if (iom_valid) |
75 | if (iom_valid) |
49 | iom.unreg (this); |
76 | iom.unreg (this); |
50 | } |
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51 | |
77 | |
52 | void io_manager::reg (io_watcher *w) |
78 | at = TSTAMP_CANCEL; |
53 | { |
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54 | if (find (iow.begin (), iow.end (), w) == iow.end ()) |
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55 | iow.push_back (w); |
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56 | } |
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57 | |
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58 | void io_manager::unreg (io_watcher *w) |
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59 | { |
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60 | iow.erase (find (iow.begin (), iow.end (), w)); |
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61 | } |
79 | } |
62 | |
80 | |
63 | void io_manager::reg (time_watcher *w) |
81 | void io_manager::reg (time_watcher *w) |
64 | { |
82 | { |
65 | if (find (tw.begin (), tw.end (), w) == tw.end ()) |
83 | reg (w, tw); |
66 | tw.push_back (w); |
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67 | } |
84 | } |
68 | |
85 | |
69 | void io_manager::unreg (time_watcher *w) |
86 | void io_manager::unreg (time_watcher *w) |
70 | { |
87 | { |
71 | tw.erase (find (tw.begin (), tw.end (), w)); |
88 | unreg (w, tw); |
72 | } |
89 | } |
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90 | #endif |
73 | |
91 | |
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92 | #if IOM_CHECK |
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93 | check_watcher::~check_watcher () |
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94 | { |
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95 | if (iom_valid) |
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96 | iom.unreg (this); |
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97 | } |
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98 | |
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99 | void io_manager::reg (check_watcher *w) |
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100 | { |
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101 | reg (w, cw); |
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102 | } |
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103 | |
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104 | void io_manager::unreg (check_watcher *w) |
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105 | { |
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106 | unreg (w, cw); |
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107 | } |
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108 | #endif |
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109 | |
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110 | #if IOM_TIME |
74 | inline void set_now (void) |
111 | inline void set_now (void) |
75 | { |
112 | { |
76 | struct timeval tv; |
113 | struct timeval tv; |
77 | |
114 | |
78 | gettimeofday (&tv, 0); |
115 | gettimeofday (&tv, 0); |
79 | |
116 | |
80 | NOW = (tstamp)tv.tv_sec + (tstamp)tv.tv_usec / 1000000; |
117 | NOW = (tstamp)tv.tv_sec + (tstamp)tv.tv_usec / 1000000; |
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118 | #endif |
81 | } |
119 | } |
82 | |
120 | |
83 | void io_manager::loop () |
121 | void io_manager::loop () |
84 | { |
122 | { |
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123 | #if IOM_TIME |
85 | set_now (); |
124 | set_now (); |
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125 | #endif |
86 | |
126 | |
87 | for (;;) |
127 | for (;;) |
88 | { |
128 | { |
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129 | #if IOM_CHECK |
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130 | for (int i = 0; i < cw.size (); ++i) |
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131 | cw[i]->call (*cw[i]); |
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132 | #endif |
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133 | |
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134 | struct timeval *to = 0; |
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135 | |
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136 | #if IOM_TIME |
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137 | struct timeval tval; |
89 | time_watcher *w; |
138 | time_watcher *w; |
90 | |
139 | |
91 | for (;;) |
140 | for (;tw.size ();) |
92 | { |
141 | { |
93 | w = tw[0]; |
142 | w = tw[0]; |
94 | |
143 | |
95 | for (time_watcher **i = tw.begin (); i != tw.end (); ++i) |
144 | for (time_watcher **i = tw.begin (); i < tw.end (); ++i) |
96 | if ((*i)->at < w->at) |
145 | if ((*i)->at < w->at) |
97 | w = *i; |
146 | w = *i; |
98 | |
147 | |
99 | if (w->at > NOW) |
148 | if (w->at > NOW) |
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149 | { |
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150 | double diff = w->at - NOW; |
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151 | tval.tv_sec = (int)diff; |
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152 | tval.tv_usec = (int)((diff - tval.tv_sec) * 1000000); |
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153 | to = &tval; |
100 | break; |
154 | break; |
101 | |
155 | } |
102 | // call it |
156 | else if (w->at >= 0) |
103 | w->call (*w); |
157 | w->call (*w); |
104 | |
158 | else |
105 | // re-add it if necessary |
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106 | if (w->at >= 0) |
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107 | reg (w); |
159 | unreg (w); |
108 | } |
160 | } |
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161 | #endif |
109 | |
162 | |
110 | struct timeval to; |
163 | #if IOM_IO |
111 | double diff = w->at - NOW; |
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112 | to.tv_sec = (int)diff; |
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113 | to.tv_usec = (int)((diff - to.tv_sec) * 1000000); |
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114 | |
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115 | fd_set rfd, wfd; |
164 | fd_set rfd, wfd; |
116 | |
165 | |
117 | FD_ZERO (&rfd); |
166 | FD_ZERO (&rfd); |
118 | FD_ZERO (&wfd); |
167 | FD_ZERO (&wfd); |
119 | |
168 | |
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122 | for (io_watcher **w = iow.begin (); w < iow.end (); ++w) |
171 | for (io_watcher **w = iow.begin (); w < iow.end (); ++w) |
123 | { |
172 | { |
124 | if ((*w)->events & EVENT_READ ) FD_SET ((*w)->fd, &rfd); |
173 | if ((*w)->events & EVENT_READ ) FD_SET ((*w)->fd, &rfd); |
125 | if ((*w)->events & EVENT_WRITE) FD_SET ((*w)->fd, &wfd); |
174 | if ((*w)->events & EVENT_WRITE) FD_SET ((*w)->fd, &wfd); |
126 | |
175 | |
127 | if ((*w)->fd > fds) fds = (*w)->fd; |
176 | if ((*w)->fd >= fds) fds = (*w)->fd + 1; |
128 | } |
177 | } |
129 | |
178 | |
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179 | if (!to && !fds) |
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180 | break; // no events |
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181 | |
130 | fds = select (fds + 1, &rfd, &wfd, 0, &to); |
182 | fds = select (fds, &rfd, &wfd, 0, to); |
131 | |
183 | # if IOM_TIME |
132 | set_now (); |
184 | set_now (); |
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185 | # endif |
133 | |
186 | |
134 | if (fds > 0) |
187 | if (fds > 0) |
135 | for (io_watcher **w = iow.begin (); w < iow.end (); ++w) |
188 | for (int i = 0; i < iow.size (); ++i) |
136 | { |
189 | { |
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190 | io_watcher *w = iow[i]; |
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191 | |
137 | short revents = (*w)->events; |
192 | short revents = w->events; |
138 | |
193 | |
139 | if (!FD_ISSET ((*w)->fd, &rfd)) revents &= ~EVENT_READ; |
194 | if (!FD_ISSET (w->fd, &rfd)) revents &= ~EVENT_READ; |
140 | if (!FD_ISSET ((*w)->fd, &wfd)) revents &= ~EVENT_WRITE; |
195 | if (!FD_ISSET (w->fd, &wfd)) revents &= ~EVENT_WRITE; |
141 | |
196 | |
142 | if (revents) |
197 | if (revents) |
143 | (*w)->call (**w, revents); |
198 | w->call (*w, revents); |
144 | } |
199 | } |
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200 | #elif IOM_TIME |
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201 | if (!to) |
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202 | break; |
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203 | |
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204 | select (0, 0, 0, 0, &to); |
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205 | set_now (); |
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206 | #else |
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207 | break; |
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208 | #endif |
145 | } |
209 | } |
146 | } |
210 | } |
147 | |
211 | |
148 | void io_manager::idle_cb (time_watcher &w) |
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149 | { |
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150 | w.at = NOW + 1000000000; |
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151 | } |
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152 | |
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153 | io_manager::io_manager () |
212 | io_manager::io_manager () |
154 | { |
213 | { |
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214 | #if IOM_TIME |
155 | set_now (); |
215 | set_now (); |
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216 | #endif |
156 | |
217 | |
157 | iom_valid = true; |
218 | iom_valid = true; |
158 | |
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159 | idle = new time_watcher (this, &io_manager::idle_cb); |
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160 | idle->start (0); |
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161 | } |
219 | } |
162 | |
220 | |
163 | io_manager::~io_manager () |
221 | io_manager::~io_manager () |
164 | { |
222 | { |
165 | iom_valid = false; |
223 | iom_valid = false; |