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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 1.8 by pcg, Sat Jan 17 14:10:40 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
32 43
44typedef double tstamp;
45extern tstamp NOW;
46
47struct watcher;
33#if IOM_IO 48#if IOM_IO
34 typedef double tstamp;
35 extern tstamp NOW;
36
37 struct io_watcher; 49struct io_watcher;
38#endif 50#endif
39#if IOM_TIME 51#if IOM_TIME
40 struct time_watcher; 52struct time_watcher;
41#endif 53#endif
42#if IOM_CHECK 54#if IOM_CHECK
43 struct check_watcher; 55struct check_watcher;
44#endif 56#endif
45#if IOM_IDLE 57#if IOM_IDLE
46 struct idle_watcher; 58struct idle_watcher;
47#endif 59#endif
60
61template<class watcher>
62struct io_manager_vec : protected vector<watcher *> {
63 friend class io_manager;
64protected:
65 void erase_unordered (unsigned int pos)
66 {
67 watcher *w = (*this)[size () - 1];
68 pop_back ();
69
70 if (size ())
71 if ((*this)[pos] = w)
72 w->active = pos + 1;
73 }
74};
48 75
49class io_manager { 76class io_manager {
50#if IOM_IO 77#if IOM_IO
51 simplevec<io_watcher *> iow; 78 io_manager_vec<io_watcher> iow;
52#endif 79#endif
53#if IOM_CHECK 80#if IOM_CHECK
54 simplevec<check_watcher *> cw; 81 io_manager_vec<check_watcher> cw;
55#endif 82#endif
56#if IOM_TIME 83#if IOM_TIME
57 simplevec<time_watcher *> tw; 84 io_manager_vec<time_watcher> tw;
58#endif 85#endif
59#if IOM_IDLE 86#if IOM_IDLE
60 simplevec<idle_watcher *> iw; 87 io_manager_vec<idle_watcher> iw;
61#endif 88#endif
62 89
63 template<class watcher> 90 template<class watcher>
64 void reg (watcher *w, simplevec<watcher *> &queue); 91 void reg (watcher *w, io_manager_vec<watcher> &queue);
65 92
66 template<class watcher> 93 template<class watcher>
67 void unreg (watcher *w, simplevec<watcher *> &queue); 94 void unreg (watcher *w, io_manager_vec<watcher> &queue);
68 95
69public: 96public:
70 // register a watcher 97 // register a watcher
71#if IOM_IO 98#if IOM_IO
72 void reg (io_watcher *w); void unreg (io_watcher *w); 99 void reg (io_watcher *w); void unreg (io_watcher *w);
… …
87 ~io_manager (); 114 ~io_manager ();
88}; 115};
89 116
90extern io_manager iom; // a singleton, together with it's construction/destruction problems. 117extern io_manager iom; // a singleton, together with it's construction/destruction problems.
91 118
119struct watcher {
120 int active; /* 0 == inactive, else index into respective vector */
121
122 watcher() : active(0) { }
123};
124
92#if IOM_IO 125#if IOM_IO
93enum { EVENT_READ = 1, EVENT_WRITE = 2 }; 126enum { EVENT_READ = 1, EVENT_WRITE = 2 };
94 127
95struct io_watcher : callback2<void, io_watcher &, short> { 128struct io_watcher : watcher, callback2<void, io_watcher &, short> {
96 int fd; 129 int fd;
97 short events; 130 short events;
98
99 template<class O1, class O2>
100 io_watcher (O1 *object, void (O2::*method)(io_watcher &, short))
101 : callback2<void, io_watcher &, short>(object,method)
102 { }
103
104 ~io_watcher ();
105 131
106 void set (int fd_, short events_) { fd = fd_; events = events_; } 132 void set (int fd_, short events_) { fd = fd_; events = events_; }
107 133
108 void set (short events_) { set (fd, events_); } 134 void set (short events_) { set (fd, events_); }
109 void start () { iom.reg (this); } 135 void start () { iom.reg (this); }
110 void start (int fd_, short events_) { set (fd_, events_); iom.reg (this); } 136 void start (int fd_, short events_) { set (fd_, events_); iom.reg (this); }
111 void stop () { iom.unreg (this); } 137 void stop () { iom.unreg (this); }
138
139 template<class O1, class O2>
140 io_watcher (O1 *object, void (O2::*method)(io_watcher &, short))
141 : callback2<void, io_watcher &, short>(object,method)
142 { }
143 ~io_watcher () { stop (); }
112}; 144};
113#endif 145#endif
114 146
115#if IOM_TIME 147#if IOM_TIME
116enum { TSTAMP_CANCEL = -1 };
117
118struct time_watcher : callback1<void, time_watcher &> { 148struct time_watcher : watcher, callback1<void, time_watcher &> {
119 tstamp at; 149 tstamp at;
120
121 template<class O1, class O2>
122 time_watcher (O1 *object, void (O2::*method)(time_watcher &))
123 : callback1<void, time_watcher &>(object,method)
124 { }
125
126 ~time_watcher ();
127 150
128 void trigger (); 151 void trigger ();
129 152
130 void set (tstamp when) { at = when; } 153 void set (tstamp when) { at = when; }
131 void operator ()() { trigger (); } 154 void operator ()() { trigger (); }
132 void start () { iom.reg (this); } 155 void start () { iom.reg (this); }
133 void start (tstamp when) { set (when); iom.reg (this); } 156 void start (tstamp when) { set (when); iom.reg (this); }
134 void stop () { iom.unreg (this); } 157 void stop () { iom.unreg (this); }
135 158
136 void reset (tstamp when = TSTAMP_CANCEL) 159 template<class O1, class O2>
137 { 160 time_watcher (O1 *object, void (O2::*method)(time_watcher &))
138 stop (); 161 : callback1<void, time_watcher &>(object,method), at(0)
139 at = when;
140 } 162 { }
163 ~time_watcher () { stop (); }
141}; 164};
142#endif 165#endif
143 166
144#if IOM_CHECK 167#if IOM_CHECK
145// run before checking for new events 168// run before checking for new events
146struct check_watcher : callback1<void, check_watcher &> { 169struct check_watcher : watcher, callback1<void, check_watcher &> {
170 void start () { iom.reg (this); }
171 void stop () { iom.unreg (this); }
172
147 template<class O1, class O2> 173 template<class O1, class O2>
148 check_watcher (O1 *object, void (O2::*method)(check_watcher &)) 174 check_watcher (O1 *object, void (O2::*method)(check_watcher &))
149 : callback1<void, check_watcher &>(object,method) 175 : callback1<void, check_watcher &>(object,method)
150 { } 176 { }
151
152 ~check_watcher (); 177 ~check_watcher () { stop (); }
153
154 void start () { iom.reg (this); }
155 void stop () { iom.unreg (this); }
156}; 178};
157#endif 179#endif
158 180
159#if IOM_IDLE 181#if IOM_IDLE
160// run after checking for any i/o, but before waiting 182// run after checking for any i/o, but before waiting
161struct idle_watcher : callback1<void, idle_watcher &> { 183struct idle_watcher : watcher, callback1<void, idle_watcher &> {
184 void start () { iom.reg (this); }
185 void stop () { iom.unreg (this); }
186
162 template<class O1, class O2> 187 template<class O1, class O2>
163 idle_watcher (O1 *object, void (O2::*method)(idle_watcher &)) 188 idle_watcher (O1 *object, void (O2::*method)(idle_watcher &))
164 : callback1<void, idle_watcher &>(object,method) 189 : callback1<void, idle_watcher &>(object,method)
165 { } 190 { }
166
167 ~idle_watcher (); 191 ~idle_watcher () { stop (); }
168
169 void start () { iom.reg (this); }
170 void stop () { iom.unreg (this); }
171}; 192};
172#endif 193#endif
173 194
174#endif 195#endif
175 196

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