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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 1.10 by pcg, Mon Feb 9 07:11:49 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 : vector<watcher *> {
63#if IOM_CHECK
64 bool activity;
65#endif
66
67 void erase_unordered (unsigned int pos)
68 {
69 watcher *w = (*this)[size () - 1];
70 pop_back ();
71
72 if (size ())
73 if ((*this)[pos] = w)
74 w->active = pos + 1;
75 }
76};
48 77
49class io_manager { 78class io_manager {
50#if IOM_IO 79#if IOM_IO
51 simplevec<io_watcher *> iow; 80 io_manager_vec<io_watcher> iow;
52#endif 81#endif
53#if IOM_CHECK 82#if IOM_CHECK
54 simplevec<check_watcher *> cw; 83 io_manager_vec<check_watcher> cw;
55#endif 84#endif
56#if IOM_TIME 85#if IOM_TIME
57 simplevec<time_watcher *> tw; 86 io_manager_vec<time_watcher> tw;
58#endif 87#endif
59#if IOM_IDLE 88#if IOM_IDLE
60 simplevec<idle_watcher *> iw; 89 io_manager_vec<idle_watcher> iw;
61#endif 90#endif
62 91
63 template<class watcher> 92 template<class watcher>
64 void reg (watcher *w, simplevec<watcher *> &queue); 93 void reg (watcher *w, io_manager_vec<watcher> &queue);
65 94
66 template<class watcher> 95 template<class watcher>
67 void unreg (watcher *w, simplevec<watcher *> &queue); 96 void unreg (watcher *w, io_manager_vec<watcher> &queue);
68 97
69public: 98public:
70 // register a watcher 99 // register a watcher
71#if IOM_IO 100#if IOM_IO
72 void reg (io_watcher *w); void unreg (io_watcher *w); 101 void reg (io_watcher *w); void unreg (io_watcher *w);
… …
87 ~io_manager (); 116 ~io_manager ();
88}; 117};
89 118
90extern io_manager iom; // a singleton, together with it's construction/destruction problems. 119extern io_manager iom; // a singleton, together with it's construction/destruction problems.
91 120
121struct watcher {
122 int active; /* 0 == inactive, else index into respective vector */
123
124 watcher() : active(0) { }
125};
126
92#if IOM_IO 127#if IOM_IO
93enum { EVENT_READ = 1, EVENT_WRITE = 2 }; 128enum { EVENT_READ = 1, EVENT_WRITE = 2 };
94 129
95struct io_watcher : callback2<void, io_watcher &, short> { 130struct io_watcher : watcher, callback2<void, io_watcher &, short> {
96 int fd; 131 int fd;
97 short events; 132 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 ();
105 133
106 void set (int fd_, short events_) { fd = fd_; events = events_; } 134 void set (int fd_, short events_) { fd = fd_; events = events_; }
107 135
108 void set (short events_) { set (fd, events_); } 136 void set (short events_) { set (fd, events_); }
109 void start () { iom.reg (this); } 137 void start () { iom.reg (this); }
110 void start (int fd_, short events_) { set (fd_, events_); iom.reg (this); } 138 void start (int fd_, short events_) { set (fd_, events_); iom.reg (this); }
111 void stop () { iom.unreg (this); } 139 void stop () { iom.unreg (this); }
140
141 template<class O1, class O2>
142 io_watcher (O1 *object, void (O2::*method)(io_watcher &, short))
143 : callback2<void, io_watcher &, short>(object,method)
144 { }
145 ~io_watcher () { stop (); }
112}; 146};
113#endif 147#endif
114 148
115#if IOM_TIME 149#if IOM_TIME
116enum { TSTAMP_CANCEL = -1 };
117
118struct time_watcher : callback1<void, time_watcher &> { 150struct time_watcher : watcher, callback1<void, time_watcher &> {
119 tstamp at; 151 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 ();
127 152
128 void trigger (); 153 void trigger ();
129 154
130 void set (tstamp when) { at = when; } 155 void set (tstamp when) { at = when; }
131 void operator ()() { trigger (); } 156 void operator ()() { trigger (); }
132 void start () { iom.reg (this); } 157 void start () { iom.reg (this); }
133 void start (tstamp when) { set (when); iom.reg (this); } 158 void start (tstamp when) { set (when); iom.reg (this); }
134 void stop () { iom.unreg (this); } 159 void stop () { iom.unreg (this); }
135 160
136 void reset (tstamp when = TSTAMP_CANCEL) 161 template<class O1, class O2>
137 { 162 time_watcher (O1 *object, void (O2::*method)(time_watcher &))
138 stop (); 163 : callback1<void, time_watcher &>(object,method), at(0)
139 at = when;
140 } 164 { }
165 ~time_watcher () { stop (); }
141}; 166};
142#endif 167#endif
143 168
144#if IOM_CHECK 169#if IOM_CHECK
145// run before checking for new events 170// run before checking for new events
146struct check_watcher : callback1<void, check_watcher &> { 171struct check_watcher : watcher, callback1<void, check_watcher &> {
172 void start () { iom.reg (this); }
173 void stop () { iom.unreg (this); }
174
147 template<class O1, class O2> 175 template<class O1, class O2>
148 check_watcher (O1 *object, void (O2::*method)(check_watcher &)) 176 check_watcher (O1 *object, void (O2::*method)(check_watcher &))
149 : callback1<void, check_watcher &>(object,method) 177 : callback1<void, check_watcher &>(object,method)
150 { } 178 { }
151
152 ~check_watcher (); 179 ~check_watcher () { stop (); }
153
154 void start () { iom.reg (this); }
155 void stop () { iom.unreg (this); }
156}; 180};
157#endif 181#endif
158 182
159#if IOM_IDLE 183#if IOM_IDLE
160// run after checking for any i/o, but before waiting 184// run after checking for any i/o, but before waiting
161struct idle_watcher : callback1<void, idle_watcher &> { 185struct idle_watcher : watcher, callback1<void, idle_watcher &> {
186 void start () { iom.reg (this); }
187 void stop () { iom.unreg (this); }
188
162 template<class O1, class O2> 189 template<class O1, class O2>
163 idle_watcher (O1 *object, void (O2::*method)(idle_watcher &)) 190 idle_watcher (O1 *object, void (O2::*method)(idle_watcher &))
164 : callback1<void, idle_watcher &>(object,method) 191 : callback1<void, idle_watcher &>(object,method)
165 { } 192 { }
166
167 ~idle_watcher (); 193 ~idle_watcher () { stop (); }
168
169 void start () { iom.reg (this); }
170 void stop () { iom.unreg (this); }
171}; 194};
172#endif 195#endif
173 196
174#endif 197#endif
175 198

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