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Comparing rxvt-unicode/src/iom.h (file contents):
Revision 1.2 by pcg, Wed Nov 26 10:42:34 2003 UTC vs.
Revision 1.9 by pcg, Thu Jan 29 23:26:01 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
30#undef IOM_CHECK 37#ifndef IOM_CHECK
38# define IOM_CHECK 0
39#endif
40#ifndef IOM_IDLE
41# define IOM_IDLE 0
42#endif
31 43
32#if IOM_IO
33 typedef double tstamp; 44typedef double tstamp;
34 extern tstamp NOW; 45extern tstamp NOW;
35 46
47struct watcher;
48#if IOM_IO
36 struct io_watcher; 49struct io_watcher;
37#endif 50#endif
38#if IOM_TIME 51#if IOM_TIME
39 struct time_watcher; 52struct time_watcher;
40#endif 53#endif
41#if IOM_CHECK 54#if IOM_CHECK
42 struct check_watcher; 55struct check_watcher;
43#endif 56#endif
57#if IOM_IDLE
58struct idle_watcher;
59#endif
60
61template<class watcher>
62struct io_manager_vec : protected vector<watcher *> {
63 friend class io_manager;
64protected:
65#if IOM_CHECK
66 bool activity;
67#endif
68
69 void erase_unordered (unsigned int pos)
70 {
71 watcher *w = (*this)[size () - 1];
72 pop_back ();
73
74 if (size ())
75 if ((*this)[pos] = w)
76 w->active = pos + 1;
77 }
78};
44 79
45class io_manager { 80class io_manager {
46#if IOM_IO 81#if IOM_IO
47 simplevec<io_watcher *> iow; 82 io_manager_vec<io_watcher> iow;
48#endif 83#endif
49#if IOM_CHECK 84#if IOM_CHECK
50 simplevec<check_watcher *> cw; 85 io_manager_vec<check_watcher> cw;
51#endif 86#endif
87#if IOM_TIME
88 io_manager_vec<time_watcher> tw;
89#endif
52#if IOM_TIME 90#if IOM_IDLE
53 simplevec<time_watcher *> tw; 91 io_manager_vec<idle_watcher> iw;
54
55 void idle_cb (time_watcher &w); time_watcher *idle;
56#endif 92#endif
57 93
58 template<class watcher> 94 template<class watcher>
59 void reg (watcher *w, simplevec<watcher *> &queue); 95 void reg (watcher *w, io_manager_vec<watcher> &queue);
60 96
61 template<class watcher> 97 template<class watcher>
62 void unreg (watcher *w, simplevec<watcher *> &queue); 98 void unreg (watcher *w, io_manager_vec<watcher> &queue);
63 99
64public: 100public:
65 // register a watcher 101 // register a watcher
66#if IOM_IO 102#if IOM_IO
67 void reg (io_watcher *w); void unreg (io_watcher *w); 103 void reg (io_watcher *w); void unreg (io_watcher *w);
68#endif 104#endif
69#if IOM_TIME 105#if IOM_TIME
70 void reg (time_watcher *w); void unreg (time_watcher *w); 106 void reg (time_watcher *w); void unreg (time_watcher *w);
71#endif 107#endif
72#if IOM_CHECK 108#if IOM_CHECK
73 void reg (check_watcher *w); void unreg (check_watcher *w); 109 void reg (check_watcher *w); void unreg (check_watcher *w);
110#endif
111#if IOM_IDLE
112 void reg (idle_watcher *w); void unreg (idle_watcher *w);
74#endif 113#endif
75 114
76 void loop (); 115 void loop ();
77 116
78 io_manager (); 117 io_manager ();
79 ~io_manager (); 118 ~io_manager ();
80}; 119};
81 120
82extern io_manager iom; // a singleton, together with it's construction/destruction problems. 121extern io_manager iom; // a singleton, together with it's construction/destruction problems.
83 122
123struct watcher {
124 int active; /* 0 == inactive, else index into respective vector */
125
126 watcher() : active(0) { }
127};
128
84#if IOM_IO 129#if IOM_IO
85enum { EVENT_READ = 1, EVENT_WRITE = 2 }; 130enum { EVENT_READ = 1, EVENT_WRITE = 2 };
86 131
87struct io_watcher : callback2<void, io_watcher &, short> { 132struct io_watcher : watcher, callback2<void, io_watcher &, short> {
88 int fd; 133 int fd;
89 short events; 134 short events;
90 135
136 void set (int fd_, short events_) { fd = fd_; events = events_; }
137
138 void set (short events_) { set (fd, events_); }
139 void start () { iom.reg (this); }
140 void start (int fd_, short events_) { set (fd_, events_); iom.reg (this); }
141 void stop () { iom.unreg (this); }
142
91 template<class O1, class O2> 143 template<class O1, class O2>
92 io_watcher (O1 *object, void (O2::*method)(io_watcher &, short)) 144 io_watcher (O1 *object, void (O2::*method)(io_watcher &, short))
93 : callback2<void, io_watcher &, short>(object,method) 145 : callback2<void, io_watcher &, short>(object,method)
94 { } 146 { }
95 147 ~io_watcher () { stop (); }
96 ~io_watcher ();
97
98 void set(int fd_, short events_) { fd = fd_; events = events_; }
99
100 void set(short events_) { set (fd, events_); }
101 void start (int fd_, short events_) { set (fd_, events_); iom.reg (this); }
102 void stop () { iom.unreg (this); }
103}; 148};
104#endif 149#endif
105 150
106#if IOM_TIME 151#if IOM_TIME
107enum { TSTAMP_CANCEL = -1 };
108
109struct time_watcher : callback1<void, time_watcher &> { 152struct time_watcher : watcher, callback1<void, time_watcher &> {
110 tstamp at; 153 tstamp at;
111
112 template<class O1, class O2>
113 time_watcher (O1 *object, void (O2::*method)(time_watcher &))
114 : callback1<void, time_watcher &>(object,method)
115 { }
116
117 ~time_watcher ();
118 154
119 void trigger (); 155 void trigger ();
120 156
121 void set (tstamp when) { at = when; } 157 void set (tstamp when) { at = when; }
122 void operator ()() { trigger (); } 158 void operator ()() { trigger (); }
123 void start () { iom.reg (this); } 159 void start () { iom.reg (this); }
124 void start (tstamp when) { set (when); iom.reg (this); } 160 void start (tstamp when) { set (when); iom.reg (this); }
125 void stop () { iom.unreg (this); } 161 void stop () { iom.unreg (this); }
126 162
127 void reset (tstamp when = TSTAMP_CANCEL) 163 template<class O1, class O2>
128 { 164 time_watcher (O1 *object, void (O2::*method)(time_watcher &))
129 stop (); 165 : callback1<void, time_watcher &>(object,method), at(0)
130 at = when;
131 } 166 { }
167 ~time_watcher () { stop (); }
132}; 168};
133#endif 169#endif
134 170
135#if IOM_CHECK 171#if IOM_CHECK
136// run before checking for new events 172// run before checking for new events
137struct check_watcher : callback1<void, check_watcher &> { 173struct check_watcher : watcher, callback1<void, check_watcher &> {
174 void start () { iom.reg (this); }
175 void stop () { iom.unreg (this); }
176
138 template<class O1, class O2> 177 template<class O1, class O2>
139 check_watcher (O1 *object, void (O2::*method)(check_watcher &)) 178 check_watcher (O1 *object, void (O2::*method)(check_watcher &))
140 : callback1<void, check_watcher &>(object,method) 179 : callback1<void, check_watcher &>(object,method)
180 { }
181 ~check_watcher () { stop (); }
182};
183#endif
184
185#if IOM_IDLE
186// run after checking for any i/o, but before waiting
187struct idle_watcher : watcher, callback1<void, idle_watcher &> {
188 void start () { iom.reg (this); }
189 void stop () { iom.unreg (this); }
190
191 template<class O1, class O2>
192 idle_watcher (O1 *object, void (O2::*method)(idle_watcher &))
193 : callback1<void, idle_watcher &>(object,method)
141 { } 194 { }
142 195 ~idle_watcher () { stop (); }
143 ~check_watcher ();
144
145 void start () { iom.reg (this); }
146 void stop () { iom.unreg (this); }
147}; 196};
148#endif 197#endif
149 198
150#endif 199#endif
151 200

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