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Comparing rxvt-unicode/src/iom.h (file contents):
Revision 1.5 by pcg, Fri Dec 19 06:17:03 2003 UTC vs.
Revision 1.12 by pcg, Fri Apr 2 14:30:06 2004 UTC

1/* 1/*
2 iom.h -- generic I/O multiplexor 2 iom.h -- generic I/O multiplexor
3 Copyright (C) 2003 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
8 (at your option) any later version. 8 (at your option) any later version.
… …
15 You should have received a copy of the GNU General Public License 15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software 16 along with this program; if not, write to the Free Software
17 Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 17 Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18*/ 18*/
19 19
20#ifndef VPE_IOM_H__ 20#ifndef IOM_H__
21#define VPE_IOM_H__ 21#define IOM_H__
22 22
23#include <cassert> 23// required:
24// - a vector template like simplevec or stl's vector
25// - defines for all watcher types required in your app
26// edit iom_conf.h as appropriate.
27#include "iom_conf.h"
24 28
25#include "rxvtvec.h"
26#include "callback.h" 29#include "callback.h"
27 30
31#ifndef IOM_IO
28#define IOM_IO 1 32# define IOM_IO 0
33#endif
34#ifndef IOM_TIME
29#define IOM_TIME 1 35# define IOM_TIME 0
36#endif
37#ifndef IOM_CHECK
30#define IOM_CHECK 1 38# define IOM_CHECK 0
39#endif
40#ifndef IOM_IDLE
31#define IOM_IDLE 0 41# define IOM_IDLE 0
42#endif
43#ifndef IOM_SIG
44# define IOM_SIG 0
45#endif
32 46
33#if IOM_IO
34 typedef double tstamp; 47typedef double tstamp;
35 extern tstamp NOW; 48extern tstamp NOW;
36 49
50struct watcher;
51#if IOM_IO
37 struct io_watcher; 52struct io_watcher;
38#endif 53#endif
39#if IOM_TIME 54#if IOM_TIME
40 struct time_watcher; 55struct time_watcher;
41#endif 56#endif
42#if IOM_CHECK 57#if IOM_CHECK
43 struct check_watcher; 58struct check_watcher;
44#endif 59#endif
45#if IOM_IDLE 60#if IOM_IDLE
46 struct idle_watcher; 61struct idle_watcher;
47#endif 62#endif
63#if IOM_SIG
64struct sig_watcher;
65#endif
66
67template<class watcher>
68struct io_manager_vec : vector<watcher *> {
69#if IOM_CHECK
70 bool activity;
71#endif
72
73 void erase_unordered (unsigned int pos)
74 {
75 watcher *w = (*this)[size () - 1];
76 pop_back ();
77
78 if (size ())
79 if ((*this)[pos] = w)
80 w->active = pos + 1;
81 }
82};
48 83
49class io_manager { 84class io_manager {
50#if IOM_IO 85#if IOM_IO
51 simplevec<io_watcher *> iow; 86 io_manager_vec<io_watcher> iow;
52#endif 87#endif
53#if IOM_CHECK 88#if IOM_CHECK
54 simplevec<check_watcher *> cw; 89 io_manager_vec<check_watcher> cw;
55#endif 90#endif
56#if IOM_TIME
57 simplevec<time_watcher *> tw;
58#endif
59#if IOM_IDLE 91#if IOM_TIME
92 io_manager_vec<time_watcher> tw;
93#endif
94#if IOM_IDLE
60 simplevec<idle_watcher *> iw; 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);
61#endif 101#endif
62 102
63 template<class watcher> 103 template<class watcher>
64 void reg (watcher *w, simplevec<watcher *> &queue); 104 void reg (watcher *w, io_manager_vec<watcher> &queue);
65 105
66 template<class watcher> 106 template<class watcher>
67 void unreg (watcher *w, simplevec<watcher *> &queue); 107 void unreg (watcher *w, io_manager_vec<watcher> &queue);
68 108
69public: 109public:
70 // register a watcher 110 // register a watcher
71#if IOM_IO 111#if IOM_IO
72 void reg (io_watcher *w); void unreg (io_watcher *w); 112 void reg (io_watcher *w); void unreg (io_watcher *w);
… …
78 void reg (check_watcher *w); void unreg (check_watcher *w); 118 void reg (check_watcher *w); void unreg (check_watcher *w);
79#endif 119#endif
80#if IOM_IDLE 120#if IOM_IDLE
81 void reg (idle_watcher *w); void unreg (idle_watcher *w); 121 void reg (idle_watcher *w); void unreg (idle_watcher *w);
82#endif 122#endif
123#if IOM_SIG
124 void reg (sig_watcher *w); void unreg (sig_watcher *w);
125#endif
83 126
84 void loop (); 127 void loop ();
85 128
86 io_manager (); 129 io_manager ();
87 ~io_manager (); 130 ~io_manager ();
88}; 131};
89 132
90extern io_manager iom; // a singleton, together with it's construction/destruction problems. 133extern io_manager iom; // a singleton, together with it's construction/destruction problems.
91 134
135struct watcher {
136 int active; /* 0 == inactive, else index into respective vector */
137
138 watcher () : active (0) { }
139};
140
92#if IOM_IO 141#if IOM_IO
93enum { EVENT_READ = 1, EVENT_WRITE = 2 }; 142enum { EVENT_READ = 1, EVENT_WRITE = 2 };
94 143
95struct io_watcher : callback2<void, io_watcher &, short> { 144struct io_watcher : watcher, callback2<void, io_watcher &, short> {
96 int fd; 145 int fd;
97 short events; 146 short events;
98 147
148 void set (int fd_, short events_) { fd = fd_; events = events_; }
149
150 void set (short events_) { set (fd, events_); }
151 void start () { iom.reg (this); }
152 void start (int fd_, short events_) { set (fd_, events_); iom.reg (this); }
153 void stop () { iom.unreg (this); }
154
99 template<class O1, class O2> 155 template<class O1, class O2>
100 io_watcher (O1 *object, void (O2::*method)(io_watcher &, short)) 156 io_watcher (O1 *object, void (O2::*method) (io_watcher &, short))
101 : callback2<void, io_watcher &, short>(object,method) 157 : callback2<void, io_watcher &, short> (object,method)
158 { }
159 ~io_watcher () { stop (); }
160};
161#endif
162
163#if IOM_TIME
164struct time_watcher : watcher, callback1<void, time_watcher &> {
165 tstamp at;
166
167 void trigger ();
168
169 void set (tstamp when) { at = when; }
170 void operator () () { trigger (); }
171 void start () { iom.reg (this); }
172 void start (tstamp when) { set (when); iom.reg (this); }
173 void stop () { iom.unreg (this); }
174
175 template<class O1, class O2>
176 time_watcher (O1 *object, void (O2::*method) (time_watcher &))
177 : callback1<void, time_watcher &> (object,method), at (0)
178 { }
179 ~time_watcher () { stop (); }
180};
181#endif
182
183#if IOM_CHECK
184// run before checking for new events
185struct check_watcher : watcher, callback1<void, check_watcher &> {
186 void start () { iom.reg (this); }
187 void stop () { iom.unreg (this); }
188
189 template<class O1, class O2>
190 check_watcher (O1 *object, void (O2::*method) (check_watcher &))
191 : callback1<void, check_watcher &> (object,method)
192 { }
193 ~check_watcher () { stop (); }
194};
195#endif
196
197#if IOM_IDLE
198// run after checking for any i/o, but before waiting
199struct idle_watcher : watcher, callback1<void, idle_watcher &> {
200 void start () { iom.reg (this); }
201 void stop () { iom.unreg (this); }
202
203 template<class O1, class O2>
204 idle_watcher (O1 *object, void (O2::*method) (idle_watcher &))
205 : callback1<void, idle_watcher &> (object,method)
102 { } 206 { }
207 ~idle_watcher () { stop (); }
208};
209#endif
103 210
104 ~io_watcher (); 211#if IOM_SIG
212struct sig_watcher : watcher, callback1<void, sig_watcher &> {
213 int signum;
105 214
106 void set (int fd_, short events_) { fd = fd_; events = events_; } 215 void start (int signum);
107
108 void set (short events_) { set (fd, events_); }
109 void start () { iom.reg (this); } 216 void stop () { iom.unreg (this); }
110 void start (int fd_, short events_) { set (fd_, events_); iom.reg (this); }
111 void stop () { iom.unreg (this); }
112};
113#endif
114 217
115#if IOM_TIME
116enum { TSTAMP_CANCEL = -1 };
117
118struct time_watcher : callback1<void, time_watcher &> {
119 tstamp at;
120
121 template<class O1, class O2> 218 template<class O1, class O2>
122 time_watcher (O1 *object, void (O2::*method)(time_watcher &)) 219 sig_watcher (O1 *object, void (O2::*method) (sig_watcher &))
123 : callback1<void, time_watcher &>(object,method) 220 : callback1<void, sig_watcher &> (object,method), signum (-1)
124 { } 221 { }
125 222 ~sig_watcher () { stop (); }
126 ~time_watcher ();
127
128 void trigger ();
129
130 void set (tstamp when) { at = when; }
131 void operator ()() { trigger (); }
132 void start () { iom.reg (this); }
133 void start (tstamp when) { set (when); iom.reg (this); }
134 void stop () { iom.unreg (this); }
135
136 void reset (tstamp when = TSTAMP_CANCEL)
137 {
138 stop ();
139 at = when;
140 }
141}; 223};
142#endif 224#endif
143 225
144#if IOM_CHECK
145// run before checking for new events
146struct check_watcher : callback1<void, check_watcher &> {
147 template<class O1, class O2>
148 check_watcher (O1 *object, void (O2::*method)(check_watcher &))
149 : callback1<void, check_watcher &>(object,method)
150 { }
151
152 ~check_watcher ();
153
154 void start () { iom.reg (this); }
155 void stop () { iom.unreg (this); }
156};
157#endif 226#endif
158 227
159#if IOM_IDLE
160// run after checking for any i/o, but before waiting
161struct idle_watcher : callback1<void, idle_watcher &> {
162 template<class O1, class O2>
163 idle_watcher (O1 *object, void (O2::*method)(idle_watcher &))
164 : callback1<void, idle_watcher &>(object,method)
165 { }
166
167 ~idle_watcher ();
168
169 void start () { iom.reg (this); }
170 void stop () { iom.unreg (this); }
171};
172#endif
173
174#endif
175

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