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Comparing rxvt-unicode/src/iom.h (file contents):
Revision 1.6 by pcg, Fri Jan 16 22:11:09 2004 UTC vs.
Revision 1.15 by root, Thu Sep 2 07:44:40 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 "callback.h" 29#include "callback.h"
26#include "rxvtvec.h"
27 30
28#ifndef IOM_IO 31#ifndef IOM_IO
29# define IOM_IO 1 32# define IOM_IO 0
30#endif 33#endif
31#ifndef IOM_TIME 34#ifndef IOM_TIME
32# define IOM_TIME 1 35# define IOM_TIME 0
33#endif 36#endif
34#ifndef IOM_CHECK 37#ifndef IOM_CHECK
35# define IOM_CHECK 1 38# define IOM_CHECK 0
36#endif 39#endif
37#ifndef IOM_IDLE 40#ifndef IOM_IDLE
38# define IOM_IDLE 0 41# define IOM_IDLE 0
39#endif 42#endif
43#ifndef IOM_SIG
44# define IOM_SIG 0
45#endif
40 46
41typedef double tstamp; 47typedef double tstamp;
42extern tstamp NOW; 48extern tstamp NOW;
43 49
50struct watcher;
44#if IOM_IO 51#if IOM_IO
45 struct io_watcher; 52struct io_watcher;
46#endif 53#endif
47#if IOM_TIME 54#if IOM_TIME
48 struct time_watcher; 55struct time_watcher;
49#endif 56#endif
50#if IOM_CHECK 57#if IOM_CHECK
51 struct check_watcher; 58struct check_watcher;
52#endif 59#endif
53#if IOM_IDLE 60#if IOM_IDLE
54 struct idle_watcher; 61struct idle_watcher;
62#endif
63#if IOM_SIG
64struct sig_watcher;
55#endif 65#endif
56 66
57template<class watcher> 67template<class watcher>
58struct io_manager_vec : protected simplevec<watcher *> { 68struct io_manager_vec : vector<watcher *> {
59 friend class io_manager; 69#if IOM_CHECK
60protected: 70 bool activity;
71#endif
72
61 void erase_unordered (unsigned int pos) 73 void erase_unordered (unsigned int pos)
62 { 74 {
63 watcher *w = (*this)[size () - 1]; 75 watcher *w = (*this)[this->size () - 1];
64 pop_back (); 76 this->pop_back ();
65 77
66 if (size ()) 78 if (this->size ())
67 if ((*this)[pos] = w) 79 if ((*this)[pos] = w)
68 w->active = pos + 1; 80 w->active = pos + 1;
69 } 81 }
70}; 82};
71 83
84// only used as a namespace, and for initialisation purposes
72class io_manager { 85class io_manager {
73#if IOM_IO
74 io_manager_vec<io_watcher> iow;
75#endif
76#if IOM_CHECK
77 io_manager_vec<check_watcher> cw;
78#endif
79#if IOM_TIME
80 io_manager_vec<time_watcher> tw;
81#endif
82#if IOM_IDLE
83 io_manager_vec<idle_watcher> iw;
84#endif
85
86 template<class watcher> 86 template<class watcher>
87 void reg (watcher *w, simplevec<watcher *> &queue); 87 static void reg (watcher &w, io_manager_vec<watcher> &queue);
88 88
89 template<class watcher> 89 template<class watcher>
90 void unreg (watcher *w, simplevec<watcher *> &queue); 90 static void unreg (watcher &w, io_manager_vec<watcher> &queue);
91 91
92public: 92public:
93 // register a watcher 93 // register a watcher
94#if IOM_IO 94#if IOM_IO
95 void reg (io_watcher *w); void unreg (io_watcher *w); 95 static void reg (io_watcher &w); static void unreg (io_watcher &w);
96#endif 96#endif
97#if IOM_TIME 97#if IOM_TIME
98 void reg (time_watcher *w); void unreg (time_watcher *w); 98 static void reg (time_watcher &w); static void unreg (time_watcher &w);
99#endif 99#endif
100#if IOM_CHECK 100#if IOM_CHECK
101 void reg (check_watcher *w); void unreg (check_watcher *w); 101 static void reg (check_watcher &w); static void unreg (check_watcher &w);
102#endif 102#endif
103#if IOM_IDLE 103#if IOM_IDLE
104 void reg (idle_watcher *w); void unreg (idle_watcher *w); 104 static void reg (idle_watcher &w); static void unreg (idle_watcher &w);
105#endif
106#if IOM_SIG
107 static void reg (sig_watcher &w); static void unreg (sig_watcher &w);
105#endif 108#endif
106 109
107 void loop (); 110 static void loop ();
108
109 io_manager ();
110 ~io_manager ();
111}; 111};
112
113extern io_manager iom; // a singleton, together with it's construction/destruction problems.
114 112
115struct watcher { 113struct watcher {
116 int active; /* 0 == inactive, else index into respective vector */ 114 int active; /* 0 == inactive, else index into respective vector */
117 115
118 watcher() : active(0) { } 116 watcher () : active (0) { }
119}; 117};
120 118
121#if IOM_IO 119#if IOM_IO
122enum { EVENT_READ = 1, EVENT_WRITE = 2 }; 120enum { EVENT_READ = 1, EVENT_WRITE = 2 };
123 121
… …
126 short events; 124 short events;
127 125
128 void set (int fd_, short events_) { fd = fd_; events = events_; } 126 void set (int fd_, short events_) { fd = fd_; events = events_; }
129 127
130 void set (short events_) { set (fd, events_); } 128 void set (short events_) { set (fd, events_); }
131 void start () { iom.reg (this); } 129 void start () { io_manager::reg (*this); }
132 void start (int fd_, short events_) { set (fd_, events_); iom.reg (this); } 130 void start (int fd_, short events_) { set (fd_, events_); io_manager::reg (*this); }
133 void stop () { iom.unreg (this); } 131 void stop () { io_manager::unreg (*this); }
134 132
135 template<class O1, class O2> 133 template<class O1, class O2>
136 io_watcher (O1 *object, void (O2::*method)(io_watcher &, short)) 134 io_watcher (O1 *object, void (O2::*method) (io_watcher &, short))
137 : callback2<void, io_watcher &, short>(object,method) 135 : callback2<void, io_watcher &, short> (object,method)
138 { } 136 { }
139 ~io_watcher () { stop (); } 137 ~io_watcher () { stop (); }
140}; 138};
141#endif 139#endif
142 140
… …
145 tstamp at; 143 tstamp at;
146 144
147 void trigger (); 145 void trigger ();
148 146
149 void set (tstamp when) { at = when; } 147 void set (tstamp when) { at = when; }
150 void operator ()() { trigger (); } 148 void operator () () { trigger (); }
151 void start () { iom.reg (this); } 149 void start () { io_manager::reg (*this); }
152 void start (tstamp when) { set (when); iom.reg (this); } 150 void start (tstamp when) { set (when); io_manager::reg (*this); }
153 void stop () { iom.unreg (this); } 151 void stop () { io_manager::unreg (*this); }
154 152
155 template<class O1, class O2> 153 template<class O1, class O2>
156 time_watcher (O1 *object, void (O2::*method)(time_watcher &)) 154 time_watcher (O1 *object, void (O2::*method) (time_watcher &))
157 : callback1<void, time_watcher &>(object,method) 155 : callback1<void, time_watcher &> (object,method), at (0)
158 { } 156 { }
159 ~time_watcher () { stop (); } 157 ~time_watcher () { stop (); }
160}; 158};
161#endif 159#endif
162 160
163#if IOM_CHECK 161#if IOM_CHECK
164// run before checking for new events 162// run before checking for new events
165struct check_watcher : watcher, callback1<void, check_watcher &> { 163struct check_watcher : watcher, callback1<void, check_watcher &> {
166 void start () { iom.reg (this); } 164 void start () { io_manager::reg (*this); }
167 void stop () { iom.unreg (this); } 165 void stop () { io_manager::unreg (*this); }
168 166
169 template<class O1, class O2> 167 template<class O1, class O2>
170 check_watcher (O1 *object, void (O2::*method)(check_watcher &)) 168 check_watcher (O1 *object, void (O2::*method) (check_watcher &))
171 : callback1<void, check_watcher &>(object,method) 169 : callback1<void, check_watcher &> (object,method)
172 { } 170 { }
173 ~check_watcher () { stop (); } 171 ~check_watcher () { stop (); }
174}; 172};
175#endif 173#endif
176 174
177#if IOM_IDLE 175#if IOM_IDLE
178// run after checking for any i/o, but before waiting 176// run after checking for any i/o, but before waiting
179struct idle_watcher : watcher, callback1<void, idle_watcher &> { 177struct idle_watcher : watcher, callback1<void, idle_watcher &> {
180 void start () { iom.reg (this); } 178 void start () { io_manager::reg (*this); }
181 void stop () { iom.unreg (this); } 179 void stop () { io_manager::unreg (*this); }
182 180
183 template<class O1, class O2> 181 template<class O1, class O2>
184 idle_watcher (O1 *object, void (O2::*method)(idle_watcher &)) 182 idle_watcher (O1 *object, void (O2::*method) (idle_watcher &))
185 : callback1<void, idle_watcher &>(object,method) 183 : callback1<void, idle_watcher &> (object,method)
186 { } 184 { }
187 ~idle_watcher () { stop (); } 185 ~idle_watcher () { stop (); }
188}; 186};
189#endif 187#endif
190 188
191#endif 189#if IOM_SIG
190struct sig_watcher : watcher, callback1<void, sig_watcher &> {
191 int signum;
192 192
193 void start (int signum);
194 void stop () { io_manager::unreg (*this); }
195
196 template<class O1, class O2>
197 sig_watcher (O1 *object, void (O2::*method) (sig_watcher &))
198 : callback1<void, sig_watcher &> (object,method), signum (-1)
199 { }
200 ~sig_watcher () { stop (); }
201};
202#endif
203
204#endif
205

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