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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 1.20 by root, Fri Nov 12 12:43:27 2004 UTC

1/* 1/*
2 iom.h -- generic I/O multiplexor 2 iom.h -- generic I/O multiplexer
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;
60protected:
61 void erase_unordered (unsigned int pos) 69 void erase_unordered (unsigned int pos)
62 { 70 {
63 watcher *w = (*this)[size () - 1]; 71 watcher *w = (*this)[this->size () - 1];
64 pop_back (); 72 this->pop_back ();
65 73
66 if (size ()) 74 if (!this->empty ())
67 if ((*this)[pos] = w) 75 if (((*this)[pos] = w)) // '=' is correct!
68 w->active = pos + 1; 76 w->active = pos + 1;
69 } 77 }
70}; 78};
71 79
80// only used as a namespace, and for initialisation purposes
72class io_manager { 81class 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> 82 template<class watcher>
87 void reg (watcher *w, simplevec<watcher *> &queue); 83 static void reg (watcher &w, io_manager_vec<watcher> &queue);
88 84
89 template<class watcher> 85 template<class watcher>
90 void unreg (watcher *w, simplevec<watcher *> &queue); 86 static void unreg (watcher &w, io_manager_vec<watcher> &queue);
91 87
92public: 88public:
93 // register a watcher 89 // register a watcher
94#if IOM_IO 90#if IOM_IO
95 void reg (io_watcher *w); void unreg (io_watcher *w); 91 static void reg (io_watcher &w); static void unreg (io_watcher &w);
96#endif 92#endif
97#if IOM_TIME 93#if IOM_TIME
98 void reg (time_watcher *w); void unreg (time_watcher *w); 94 static void reg (time_watcher &w); static void unreg (time_watcher &w);
99#endif 95#endif
100#if IOM_CHECK 96#if IOM_CHECK
101 void reg (check_watcher *w); void unreg (check_watcher *w); 97 static void reg (check_watcher &w); static void unreg (check_watcher &w);
102#endif 98#endif
103#if IOM_IDLE 99#if IOM_IDLE
104 void reg (idle_watcher *w); void unreg (idle_watcher *w); 100 static void reg (idle_watcher &w); static void unreg (idle_watcher &w);
101#endif
102#if IOM_SIG
103 static void reg (sig_watcher &w); static void unreg (sig_watcher &w);
105#endif 104#endif
106 105
107 void loop (); 106 static void loop ();
108
109 io_manager ();
110 ~io_manager ();
111}; 107};
112
113extern io_manager iom; // a singleton, together with it's construction/destruction problems.
114 108
115struct watcher { 109struct watcher {
116 int active; /* 0 == inactive, else index into respective vector */ 110 int active; /* 0 == inactive, else index into respective vector */
117 111
118 watcher() : active(0) { } 112 watcher () : active (0) { }
119}; 113};
120 114
121#if IOM_IO 115#if IOM_IO
122enum { EVENT_READ = 1, EVENT_WRITE = 2 }; 116enum { EVENT_READ = 1, EVENT_WRITE = 2 };
123 117
… …
126 short events; 120 short events;
127 121
128 void set (int fd_, short events_) { fd = fd_; events = events_; } 122 void set (int fd_, short events_) { fd = fd_; events = events_; }
129 123
130 void set (short events_) { set (fd, events_); } 124 void set (short events_) { set (fd, events_); }
131 void start () { iom.reg (this); } 125 void start () { io_manager::reg (*this); }
132 void start (int fd_, short events_) { set (fd_, events_); iom.reg (this); } 126 void start (int fd_, short events_) { set (fd_, events_); io_manager::reg (*this); }
133 void stop () { iom.unreg (this); } 127 void stop () { io_manager::unreg (*this); }
134 128
135 template<class O1, class O2> 129 template<class O1, class O2>
136 io_watcher (O1 *object, void (O2::*method)(io_watcher &, short)) 130 io_watcher (O1 *object, void (O2::*method) (io_watcher &, short))
137 : callback2<void, io_watcher &, short>(object,method) 131 : callback2<void, io_watcher &, short> (object,method)
138 { } 132 { }
139 ~io_watcher () { stop (); } 133 ~io_watcher () { stop (); }
140}; 134};
141#endif 135#endif
142 136
… …
145 tstamp at; 139 tstamp at;
146 140
147 void trigger (); 141 void trigger ();
148 142
149 void set (tstamp when) { at = when; } 143 void set (tstamp when) { at = when; }
150 void operator ()() { trigger (); } 144 void operator () () { trigger (); }
151 void start () { iom.reg (this); } 145 void start () { io_manager::reg (*this); }
152 void start (tstamp when) { set (when); iom.reg (this); } 146 void start (tstamp when) { set (when); io_manager::reg (*this); }
153 void stop () { iom.unreg (this); } 147 void stop () { io_manager::unreg (*this); }
154 148
155 template<class O1, class O2> 149 template<class O1, class O2>
156 time_watcher (O1 *object, void (O2::*method)(time_watcher &)) 150 time_watcher (O1 *object, void (O2::*method) (time_watcher &))
157 : callback1<void, time_watcher &>(object,method) 151 : callback1<void, time_watcher &> (object,method), at (0)
158 { } 152 { }
159 ~time_watcher () { stop (); } 153 ~time_watcher () { stop (); }
160}; 154};
161#endif 155#endif
162 156
163#if IOM_CHECK 157#if IOM_CHECK
164// run before checking for new events 158// run before checking for new events
165struct check_watcher : watcher, callback1<void, check_watcher &> { 159struct check_watcher : watcher, callback1<void, check_watcher &> {
166 void start () { iom.reg (this); } 160 void start () { io_manager::reg (*this); }
167 void stop () { iom.unreg (this); } 161 void stop () { io_manager::unreg (*this); }
168 162
169 template<class O1, class O2> 163 template<class O1, class O2>
170 check_watcher (O1 *object, void (O2::*method)(check_watcher &)) 164 check_watcher (O1 *object, void (O2::*method) (check_watcher &))
171 : callback1<void, check_watcher &>(object,method) 165 : callback1<void, check_watcher &> (object,method)
172 { } 166 { }
173 ~check_watcher () { stop (); } 167 ~check_watcher () { stop (); }
174}; 168};
175#endif 169#endif
176 170
177#if IOM_IDLE 171#if IOM_IDLE
178// run after checking for any i/o, but before waiting 172// run after checking for any i/o, but before waiting
179struct idle_watcher : watcher, callback1<void, idle_watcher &> { 173struct idle_watcher : watcher, callback1<void, idle_watcher &> {
180 void start () { iom.reg (this); } 174 void start () { io_manager::reg (*this); }
181 void stop () { iom.unreg (this); } 175 void stop () { io_manager::unreg (*this); }
182 176
183 template<class O1, class O2> 177 template<class O1, class O2>
184 idle_watcher (O1 *object, void (O2::*method)(idle_watcher &)) 178 idle_watcher (O1 *object, void (O2::*method) (idle_watcher &))
185 : callback1<void, idle_watcher &>(object,method) 179 : callback1<void, idle_watcher &> (object,method)
186 { } 180 { }
187 ~idle_watcher () { stop (); } 181 ~idle_watcher () { stop (); }
188}; 182};
189#endif 183#endif
190 184
191#endif 185#if IOM_SIG
186struct sig_watcher : watcher, callback1<void, sig_watcher &> {
187 int signum;
192 188
189 void start (int signum);
190 void stop () { io_manager::unreg (*this); }
191
192 template<class O1, class O2>
193 sig_watcher (O1 *object, void (O2::*method) (sig_watcher &))
194 : callback1<void, sig_watcher &> (object,method), signum (-1)
195 { }
196 ~sig_watcher () { stop (); }
197};
198#endif
199
200#endif
201

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