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Comparing rxvt-unicode/src/iom.h (file contents):
Revision 1.12 by pcg, Fri Apr 2 14:30:06 2004 UTC vs.
Revision 1.21 by root, Sat Dec 11 17:18:29 2004 UTC

1/* 1/*
2 iom.h -- generic I/O multiplexor 2 iom.h -- generic I/O multiplexer
3 Copyright (C) 2003, 2004 Marc Lehmann <pcg@goof.com> 3 Copyright (C) 2003, 2004 Marc Lehmann <pcg@goof.com>
4 4
5 This program is free software; you can redistribute it and/or modify 5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by 6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or 7 the Free Software Foundation; either version 2 of the License, or
… …
64struct sig_watcher; 64struct sig_watcher;
65#endif 65#endif
66 66
67template<class watcher> 67template<class watcher>
68struct io_manager_vec : vector<watcher *> { 68struct io_manager_vec : vector<watcher *> {
69#if IOM_CHECK
70 bool activity;
71#endif
72
73 void erase_unordered (unsigned int pos) 69 void erase_unordered (unsigned int pos)
74 { 70 {
75 watcher *w = (*this)[size () - 1]; 71 watcher *w = (*this)[this->size () - 1];
76 pop_back (); 72 this->pop_back ();
77 73
78 if (size ()) 74 if (!this->empty ())
79 if ((*this)[pos] = w) 75 if (((*this)[pos] = w)) // '=' is correct!
80 w->active = pos + 1; 76 w->active = pos + 1;
81 } 77 }
82}; 78};
83 79
80// only used as a namespace, and for initialisation purposes
84class io_manager { 81class io_manager {
85#if IOM_IO
86 io_manager_vec<io_watcher> iow;
87#endif
88#if IOM_CHECK
89 io_manager_vec<check_watcher> cw;
90#endif
91#if IOM_TIME
92 io_manager_vec<time_watcher> tw;
93#endif
94#if IOM_IDLE
95 io_manager_vec<idle_watcher> iw;
96#endif
97#if IOM_SIG
98 typedef io_manager_vec<sig_watcher> sig_vec;
99 vector<sig_vec *> sw;
100 static void sighandler (int signum);
101#endif
102
103 template<class watcher> 82 template<class watcher>
104 void reg (watcher *w, io_manager_vec<watcher> &queue); 83 static void reg (watcher &w, io_manager_vec<watcher> &queue);
105 84
106 template<class watcher> 85 template<class watcher>
107 void unreg (watcher *w, io_manager_vec<watcher> &queue); 86 static void unreg (watcher &w, io_manager_vec<watcher> &queue);
108 87
109public: 88public:
89#if IOM_TIME
90 // fetch time only
91 static tstamp now ();
92
93 // set NOW
94 static void set_now ();
95#endif
96
110 // register a watcher 97 // register a watcher
111#if IOM_IO 98#if IOM_IO
112 void reg (io_watcher *w); void unreg (io_watcher *w); 99 static void reg (io_watcher &w); static void unreg (io_watcher &w);
113#endif 100#endif
114#if IOM_TIME 101#if IOM_TIME
115 void reg (time_watcher *w); void unreg (time_watcher *w); 102 static void reg (time_watcher &w); static void unreg (time_watcher &w);
116#endif 103#endif
117#if IOM_CHECK 104#if IOM_CHECK
118 void reg (check_watcher *w); void unreg (check_watcher *w); 105 static void reg (check_watcher &w); static void unreg (check_watcher &w);
119#endif 106#endif
120#if IOM_IDLE 107#if IOM_IDLE
121 void reg (idle_watcher *w); void unreg (idle_watcher *w); 108 static void reg (idle_watcher &w); static void unreg (idle_watcher &w);
122#endif 109#endif
123#if IOM_SIG 110#if IOM_SIG
124 void reg (sig_watcher *w); void unreg (sig_watcher *w); 111 static void reg (sig_watcher &w); static void unreg (sig_watcher &w);
125#endif 112#endif
126 113
127 void loop (); 114 static void loop ();
128
129 io_manager ();
130 ~io_manager ();
131}; 115};
132
133extern io_manager iom; // a singleton, together with it's construction/destruction problems.
134 116
135struct watcher { 117struct watcher {
136 int active; /* 0 == inactive, else index into respective vector */ 118 int active; /* 0 == inactive, else index into respective vector */
137 119
138 watcher () : active (0) { } 120 watcher () : active (0) { }
… …
146 short events; 128 short events;
147 129
148 void set (int fd_, short events_) { fd = fd_; events = events_; } 130 void set (int fd_, short events_) { fd = fd_; events = events_; }
149 131
150 void set (short events_) { set (fd, events_); } 132 void set (short events_) { set (fd, events_); }
151 void start () { iom.reg (this); } 133 void start () { io_manager::reg (*this); }
152 void start (int fd_, short events_) { set (fd_, events_); iom.reg (this); } 134 void start (int fd_, short events_) { set (fd_, events_); io_manager::reg (*this); }
153 void stop () { iom.unreg (this); } 135 void stop () { io_manager::unreg (*this); }
154 136
155 template<class O1, class O2> 137 template<class O1, class O2>
156 io_watcher (O1 *object, void (O2::*method) (io_watcher &, short)) 138 io_watcher (O1 *object, void (O2::*method) (io_watcher &, short))
157 : callback2<void, io_watcher &, short> (object,method) 139 : callback2<void, io_watcher &, short> (object,method)
158 { } 140 { }
… …
166 148
167 void trigger (); 149 void trigger ();
168 150
169 void set (tstamp when) { at = when; } 151 void set (tstamp when) { at = when; }
170 void operator () () { trigger (); } 152 void operator () () { trigger (); }
171 void start () { iom.reg (this); } 153 void start () { io_manager::reg (*this); }
172 void start (tstamp when) { set (when); iom.reg (this); } 154 void start (tstamp when) { set (when); io_manager::reg (*this); }
173 void stop () { iom.unreg (this); } 155 void stop () { io_manager::unreg (*this); }
174 156
175 template<class O1, class O2> 157 template<class O1, class O2>
176 time_watcher (O1 *object, void (O2::*method) (time_watcher &)) 158 time_watcher (O1 *object, void (O2::*method) (time_watcher &))
177 : callback1<void, time_watcher &> (object,method), at (0) 159 : callback1<void, time_watcher &> (object,method), at (0)
178 { } 160 { }
… …
181#endif 163#endif
182 164
183#if IOM_CHECK 165#if IOM_CHECK
184// run before checking for new events 166// run before checking for new events
185struct check_watcher : watcher, callback1<void, check_watcher &> { 167struct check_watcher : watcher, callback1<void, check_watcher &> {
186 void start () { iom.reg (this); } 168 void start () { io_manager::reg (*this); }
187 void stop () { iom.unreg (this); } 169 void stop () { io_manager::unreg (*this); }
188 170
189 template<class O1, class O2> 171 template<class O1, class O2>
190 check_watcher (O1 *object, void (O2::*method) (check_watcher &)) 172 check_watcher (O1 *object, void (O2::*method) (check_watcher &))
191 : callback1<void, check_watcher &> (object,method) 173 : callback1<void, check_watcher &> (object,method)
192 { } 174 { }
… …
195#endif 177#endif
196 178
197#if IOM_IDLE 179#if IOM_IDLE
198// run after checking for any i/o, but before waiting 180// run after checking for any i/o, but before waiting
199struct idle_watcher : watcher, callback1<void, idle_watcher &> { 181struct idle_watcher : watcher, callback1<void, idle_watcher &> {
200 void start () { iom.reg (this); } 182 void start () { io_manager::reg (*this); }
201 void stop () { iom.unreg (this); } 183 void stop () { io_manager::unreg (*this); }
202 184
203 template<class O1, class O2> 185 template<class O1, class O2>
204 idle_watcher (O1 *object, void (O2::*method) (idle_watcher &)) 186 idle_watcher (O1 *object, void (O2::*method) (idle_watcher &))
205 : callback1<void, idle_watcher &> (object,method) 187 : callback1<void, idle_watcher &> (object,method)
206 { } 188 { }
… …
211#if IOM_SIG 193#if IOM_SIG
212struct sig_watcher : watcher, callback1<void, sig_watcher &> { 194struct sig_watcher : watcher, callback1<void, sig_watcher &> {
213 int signum; 195 int signum;
214 196
215 void start (int signum); 197 void start (int signum);
216 void stop () { iom.unreg (this); } 198 void stop () { io_manager::unreg (*this); }
217 199
218 template<class O1, class O2> 200 template<class O1, class O2>
219 sig_watcher (O1 *object, void (O2::*method) (sig_watcher &)) 201 sig_watcher (O1 *object, void (O2::*method) (sig_watcher &))
220 : callback1<void, sig_watcher &> (object,method), signum (-1) 202 : callback1<void, sig_watcher &> (object,method), signum (-1)
221 { } 203 { }

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