1 | /* |
1 | /* |
2 | iom.h -- generic I/O multiplexer |
2 | iom.h -- generic I/O multiplexer |
3 | Copyright (C) 2003, 2004 Marc Lehmann <gvpe@schmorp.de> |
3 | Copyright (C) 2003-2006 Marc Lehmann <gvpe@schmorp.de> |
4 | |
4 | |
5 | This file is part of GVPE. |
5 | This file is part of GVPE. |
6 | |
6 | |
7 | GVPE is free software; you can redistribute it and/or modify |
7 | GVPE is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by |
8 | it under the terms of the GNU General Public License as published by |
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115 | }; |
115 | }; |
116 | |
116 | |
117 | struct watcher { |
117 | struct watcher { |
118 | int active; /* 0 == inactive, else index into respective vector */ |
118 | int active; /* 0 == inactive, else index into respective vector */ |
119 | |
119 | |
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120 | bool is_active () { return active; } |
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121 | |
120 | watcher () : active (0) { } |
122 | watcher () : active (0) { } |
121 | }; |
123 | }; |
122 | |
124 | |
123 | #if IOM_IO |
125 | #if IOM_IO |
124 | enum { EVENT_UNDEF = -1, EVENT_NONE = 0, EVENT_READ = 1, EVENT_WRITE = 2 }; |
126 | enum { EVENT_UNDEF = -1, EVENT_NONE = 0, EVENT_READ = 1, EVENT_WRITE = 2 }; |
125 | |
127 | |
126 | struct io_watcher : watcher, callback2<void, io_watcher &, short> { |
128 | struct io_watcher : watcher, callback<void (io_watcher &, short)> { |
127 | int fd; |
129 | int fd; |
128 | short events; |
130 | short events; |
129 | |
131 | |
130 | void set (int fd_, short events_) { fd = fd_; events = events_; } |
132 | void set (int fd_, short events_) { fd = fd_; events = events_; } |
131 | |
133 | |
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134 | void start (int fd_, short events_) { set (fd_, events_); io_manager::reg (*this); } |
136 | void start (int fd_, short events_) { set (fd_, events_); io_manager::reg (*this); } |
135 | void stop () { io_manager::unreg (*this); } |
137 | void stop () { io_manager::unreg (*this); } |
136 | |
138 | |
137 | template<class O1, class O2> |
139 | template<class O1, class O2> |
138 | io_watcher (O1 *object, void (O2::*method) (io_watcher &, short)) |
140 | io_watcher (O1 *object, void (O2::*method) (io_watcher &, short)) |
139 | : callback2<void, io_watcher &, short> (object, method) |
141 | : callback<void (io_watcher &, short)> (object, method) |
140 | { } |
142 | { } |
141 | ~io_watcher () { stop (); } |
143 | ~io_watcher () { stop (); } |
142 | }; |
144 | }; |
143 | #endif |
145 | #endif |
144 | |
146 | |
145 | #if IOM_TIME |
147 | #if IOM_TIME |
146 | struct time_watcher : watcher, callback1<void, time_watcher &> { |
148 | struct time_watcher : watcher, callback<void (time_watcher &)> { |
147 | tstamp at; |
149 | tstamp at; |
148 | |
150 | |
149 | void trigger (); |
151 | void trigger (); |
150 | |
152 | |
151 | void set (tstamp when) { at = when; } |
153 | void set (tstamp when) { at = when; } |
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154 | void start (tstamp when) { set (when); io_manager::reg (*this); } |
156 | void start (tstamp when) { set (when); io_manager::reg (*this); } |
155 | void stop () { io_manager::unreg (*this); } |
157 | void stop () { io_manager::unreg (*this); } |
156 | |
158 | |
157 | template<class O1, class O2> |
159 | template<class O1, class O2> |
158 | time_watcher (O1 *object, void (O2::*method) (time_watcher &)) |
160 | time_watcher (O1 *object, void (O2::*method) (time_watcher &)) |
159 | : callback1<void, time_watcher &> (object, method), at (0) |
161 | : callback<void (time_watcher &)> (object, method), at (0) |
160 | { } |
162 | { } |
161 | ~time_watcher () { stop (); } |
163 | ~time_watcher () { stop (); } |
162 | }; |
164 | }; |
163 | #endif |
165 | #endif |
164 | |
166 | |
165 | #if IOM_CHECK |
167 | #if IOM_CHECK |
166 | // run before checking for new events |
168 | // run before checking for new events |
167 | struct check_watcher : watcher, callback1<void, check_watcher &> { |
169 | struct check_watcher : watcher, callback<void (check_watcher &)> { |
168 | void start () { io_manager::reg (*this); } |
170 | void start () { io_manager::reg (*this); } |
169 | void stop () { io_manager::unreg (*this); } |
171 | void stop () { io_manager::unreg (*this); } |
170 | |
172 | |
171 | template<class O1, class O2> |
173 | template<class O1, class O2> |
172 | check_watcher (O1 *object, void (O2::*method) (check_watcher &)) |
174 | check_watcher (O1 *object, void (O2::*method) (check_watcher &)) |
173 | : callback1<void, check_watcher &> (object, method) |
175 | : callback<void (check_watcher &)> (object, method) |
174 | { } |
176 | { } |
175 | ~check_watcher () { stop (); } |
177 | ~check_watcher () { stop (); } |
176 | }; |
178 | }; |
177 | #endif |
179 | #endif |
178 | |
180 | |
179 | #if IOM_IDLE |
181 | #if IOM_IDLE |
180 | // run after checking for any i/o, but before waiting |
182 | // run after checking for any i/o, but before waiting |
181 | struct idle_watcher : watcher, callback1<void, idle_watcher &> { |
183 | struct idle_watcher : watcher, callback<void (idle_watcher &)> { |
182 | void start () { io_manager::reg (*this); } |
184 | void start () { io_manager::reg (*this); } |
183 | void stop () { io_manager::unreg (*this); } |
185 | void stop () { io_manager::unreg (*this); } |
184 | |
186 | |
185 | template<class O1, class O2> |
187 | template<class O1, class O2> |
186 | idle_watcher (O1 *object, void (O2::*method) (idle_watcher &)) |
188 | idle_watcher (O1 *object, void (O2::*method) (idle_watcher &)) |
187 | : callback1<void, idle_watcher &> (object, method) |
189 | : callback<void (idle_watcher &)> (object, method) |
188 | { } |
190 | { } |
189 | ~idle_watcher () { stop (); } |
191 | ~idle_watcher () { stop (); } |
190 | }; |
192 | }; |
191 | #endif |
193 | #endif |
192 | |
194 | |
193 | #if IOM_SIG |
195 | #if IOM_SIG |
194 | struct sig_watcher : watcher, callback1<void, sig_watcher &> { |
196 | struct sig_watcher : watcher, callback<void (sig_watcher &)> { |
195 | int signum; |
197 | int signum; |
196 | |
198 | |
197 | void start (int signum); |
199 | void start (int signum); |
198 | void stop () { io_manager::unreg (*this); } |
200 | void stop () { io_manager::unreg (*this); } |
199 | |
201 | |
200 | template<class O1, class O2> |
202 | template<class O1, class O2> |
201 | sig_watcher (O1 *object, void (O2::*method) (sig_watcher &)) |
203 | sig_watcher (O1 *object, void (O2::*method) (sig_watcher &)) |
202 | : callback1<void, sig_watcher &> (object, method), signum (0) |
204 | : callback<void(sig_watcher &)> (object, method), signum (0) |
203 | { } |
205 | { } |
204 | ~sig_watcher () { stop (); } |
206 | ~sig_watcher () { stop (); } |
205 | }; |
207 | }; |
206 | #endif |
208 | #endif |
207 | |
209 | |
208 | #if IOM_CHILD |
210 | #if IOM_CHILD |
209 | struct child_watcher : watcher, callback2<void, child_watcher &, int> { |
211 | struct child_watcher : watcher, callback<void (child_watcher &, int)> { |
210 | int /*pid_t*/ pid; |
212 | int /*pid_t*/ pid; |
211 | |
213 | |
212 | void start (int pid) { this->pid = pid; io_manager::reg (*this); } |
214 | void start (int pid) { this->pid = pid; io_manager::reg (*this); } |
213 | void stop () { io_manager::unreg (*this); } |
215 | void stop () { io_manager::unreg (*this); } |
214 | |
216 | |
215 | template<class O1, class O2> |
217 | template<class O1, class O2> |
216 | child_watcher (O1 *object, void (O2::*method) (child_watcher &, int status)) |
218 | child_watcher (O1 *object, void (O2::*method) (child_watcher &, int status)) |
217 | : callback2<void, child_watcher &, int> (object, method), pid (0) |
219 | : callback<void (child_watcher &, int)> (object, method), pid (0) |
218 | { } |
220 | { } |
219 | ~child_watcher () { stop (); } |
221 | ~child_watcher () { stop (); } |
220 | }; |
222 | }; |
221 | #endif |
223 | #endif |
222 | |
224 | |