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Comparing gvpe/src/iom.h (file contents):
Revision 1.26 by pcg, Wed Dec 15 02:59:55 2004 UTC vs.
Revision 1.32 by pcg, Wed May 31 00:31:47 2006 UTC

1/* 1/*
2 iom.h -- generic I/O multiplexer 2 iom.h -- generic I/O multiplexer
3 Copyright (C) 2003, 2004 Marc Lehmann <pcg@goof.com> 3 Copyright (C) 2003-2006 Marc Lehmann <gvpe@schmorp.de>
4 4
5 This file is part of GVPE.
6
5 This program is free software; you can redistribute it and/or modify 7 GVPE is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by 8 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 9 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version. 10 (at your option) any later version.
9 11
10 This program is distributed in the hope that it will be useful, 12 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details. 15 GNU General Public License for more details.
14 16
15 You should have received a copy of the GNU General Public License 17 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software 18 along with gvpe; if not, write to the Free Software
17 Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18*/ 20*/
19 21
20#ifndef IOM_H__ 22#ifndef IOM_H__
21#define IOM_H__ 23#define IOM_H__
22 24
… …
24// - a vector template like simplevec or stl's vector 26// - a vector template like simplevec or stl's vector
25// - defines for all watcher types required in your app 27// - defines for all watcher types required in your app
26// edit iom_conf.h as appropriate. 28// edit iom_conf.h as appropriate.
27#include "iom_conf.h" 29#include "iom_conf.h"
28 30
31#if IOM_CHILD
32# undef IOM_SIG
33# define IOM_SIG 1
34#endif
35
29#include "callback.h" 36#include "callback.h"
30
31#ifndef IOM_IO
32# define IOM_IO 0
33#endif
34#ifndef IOM_TIME
35# define IOM_TIME 0
36#endif
37#ifndef IOM_CHECK
38# define IOM_CHECK 0
39#endif
40#ifndef IOM_IDLE
41# define IOM_IDLE 0
42#endif
43#ifndef IOM_SIG
44# define IOM_SIG 0
45#endif
46 37
47typedef double tstamp; 38typedef double tstamp;
48extern tstamp NOW; 39extern tstamp NOW;
40
41// TSTAMP_MAX must still fit into a positive struct timeval
42#define TSTAMP_MAX (double)(1UL<<31)
49 43
50struct watcher; 44struct watcher;
51#if IOM_IO 45#if IOM_IO
52struct io_watcher; 46struct io_watcher;
53#endif 47#endif
… …
60#if IOM_IDLE 54#if IOM_IDLE
61struct idle_watcher; 55struct idle_watcher;
62#endif 56#endif
63#if IOM_SIG 57#if IOM_SIG
64struct sig_watcher; 58struct sig_watcher;
59#endif
60#if IOM_CHILD
61struct child_watcher;
65#endif 62#endif
66 63
67template<class watcher> 64template<class watcher>
68struct io_manager_vec : vector<watcher *> { 65struct io_manager_vec : vector<watcher *> {
69 void erase_unordered (unsigned int pos) 66 void erase_unordered (unsigned int pos)
… …
108 static void reg (idle_watcher &w); static void unreg (idle_watcher &w); 105 static void reg (idle_watcher &w); static void unreg (idle_watcher &w);
109#endif 106#endif
110#if IOM_SIG 107#if IOM_SIG
111 static void reg (sig_watcher &w); static void unreg (sig_watcher &w); 108 static void reg (sig_watcher &w); static void unreg (sig_watcher &w);
112#endif 109#endif
110#if IOM_CHILD
111 static void reg (child_watcher &w); static void unreg (child_watcher &w);
112#endif
113 113
114 static void loop (); 114 static void loop ();
115}; 115};
116 116
117struct watcher { 117struct watcher {
118 int active; /* 0 == inactive, else index into respective vector */ 118 int active; /* 0 == inactive, else index into respective vector */
119 119
120 bool is_active () { return active; }
121
120 watcher () : active (0) { } 122 watcher () : active (0) { }
121}; 123};
122 124
123#if IOM_IO 125#if IOM_IO
124enum { EVENT_READ = 1, EVENT_WRITE = 2 }; 126enum { EVENT_UNDEF = -1, EVENT_NONE = 0, EVENT_READ = 1, EVENT_WRITE = 2 };
125 127
126struct io_watcher : watcher, callback2<void, io_watcher &, short> { 128struct io_watcher : watcher, callback<void (io_watcher &, short)> {
127 int fd; 129 int fd;
128 short events; 130 short events;
129 131
130 void set (int fd_, short events_) { fd = fd_; events = events_; } 132 void set (int fd_, short events_) { fd = fd_; events = events_; }
131 133
… …
134 void start (int fd_, short events_) { set (fd_, events_); io_manager::reg (*this); } 136 void start (int fd_, short events_) { set (fd_, events_); io_manager::reg (*this); }
135 void stop () { io_manager::unreg (*this); } 137 void stop () { io_manager::unreg (*this); }
136 138
137 template<class O1, class O2> 139 template<class O1, class O2>
138 io_watcher (O1 *object, void (O2::*method) (io_watcher &, short)) 140 io_watcher (O1 *object, void (O2::*method) (io_watcher &, short))
139 : callback2<void, io_watcher &, short> (object,method) 141 : callback<void (io_watcher &, short)> (object, method)
140 { } 142 { }
141 ~io_watcher () { stop (); } 143 ~io_watcher () { stop (); }
142}; 144};
143#endif 145#endif
144 146
145#if IOM_TIME 147#if IOM_TIME
146struct time_watcher : watcher, callback1<void, time_watcher &> { 148struct time_watcher : watcher, callback<void (time_watcher &)> {
147 tstamp at; 149 tstamp at;
148 150
149 void trigger (); 151 void trigger ();
150 152
151 void set (tstamp when) { at = when; } 153 void set (tstamp when) { at = when; }
… …
154 void start (tstamp when) { set (when); io_manager::reg (*this); } 156 void start (tstamp when) { set (when); io_manager::reg (*this); }
155 void stop () { io_manager::unreg (*this); } 157 void stop () { io_manager::unreg (*this); }
156 158
157 template<class O1, class O2> 159 template<class O1, class O2>
158 time_watcher (O1 *object, void (O2::*method) (time_watcher &)) 160 time_watcher (O1 *object, void (O2::*method) (time_watcher &))
159 : callback1<void, time_watcher &> (object,method), at (0) 161 : callback<void (time_watcher &)> (object, method), at (0)
160 { } 162 { }
161 ~time_watcher () { stop (); } 163 ~time_watcher () { stop (); }
162}; 164};
163#endif 165#endif
164 166
165#if IOM_CHECK 167#if IOM_CHECK
166// run before checking for new events 168// run before checking for new events
167struct check_watcher : watcher, callback1<void, check_watcher &> { 169struct check_watcher : watcher, callback<void (check_watcher &)> {
168 void start () { io_manager::reg (*this); } 170 void start () { io_manager::reg (*this); }
169 void stop () { io_manager::unreg (*this); } 171 void stop () { io_manager::unreg (*this); }
170 172
171 template<class O1, class O2> 173 template<class O1, class O2>
172 check_watcher (O1 *object, void (O2::*method) (check_watcher &)) 174 check_watcher (O1 *object, void (O2::*method) (check_watcher &))
173 : callback1<void, check_watcher &> (object,method) 175 : callback<void (check_watcher &)> (object, method)
174 { } 176 { }
175 ~check_watcher () { stop (); } 177 ~check_watcher () { stop (); }
176}; 178};
177#endif 179#endif
178 180
179#if IOM_IDLE 181#if IOM_IDLE
180// run after checking for any i/o, but before waiting 182// run after checking for any i/o, but before waiting
181struct idle_watcher : watcher, callback1<void, idle_watcher &> { 183struct idle_watcher : watcher, callback<void (idle_watcher &)> {
182 void start () { io_manager::reg (*this); } 184 void start () { io_manager::reg (*this); }
183 void stop () { io_manager::unreg (*this); } 185 void stop () { io_manager::unreg (*this); }
184 186
185 template<class O1, class O2> 187 template<class O1, class O2>
186 idle_watcher (O1 *object, void (O2::*method) (idle_watcher &)) 188 idle_watcher (O1 *object, void (O2::*method) (idle_watcher &))
187 : callback1<void, idle_watcher &> (object,method) 189 : callback<void (idle_watcher &)> (object, method)
188 { } 190 { }
189 ~idle_watcher () { stop (); } 191 ~idle_watcher () { stop (); }
190}; 192};
191#endif 193#endif
192 194
193#if IOM_SIG 195#if IOM_SIG
194struct sig_watcher : watcher, callback1<void, sig_watcher &> { 196struct sig_watcher : watcher, callback<void (sig_watcher &)> {
195 int signum; 197 int signum;
196 198
197 void start (int signum); 199 void start (int signum);
198 void stop () { io_manager::unreg (*this); } 200 void stop () { io_manager::unreg (*this); }
199 201
200 template<class O1, class O2> 202 template<class O1, class O2>
201 sig_watcher (O1 *object, void (O2::*method) (sig_watcher &)) 203 sig_watcher (O1 *object, void (O2::*method) (sig_watcher &))
202 : callback1<void, sig_watcher &> (object,method), signum (-1) 204 : callback<void(sig_watcher &)> (object, method), signum (0)
203 { } 205 { }
204 ~sig_watcher () { stop (); } 206 ~sig_watcher () { stop (); }
205}; 207};
206#endif 208#endif
207 209
208#endif 210#if IOM_CHILD
211struct child_watcher : watcher, callback<void (child_watcher &, int)> {
212 int /*pid_t*/ pid;
209 213
214 void start (int pid) { this->pid = pid; io_manager::reg (*this); }
215 void stop () { io_manager::unreg (*this); }
216
217 template<class O1, class O2>
218 child_watcher (O1 *object, void (O2::*method) (child_watcher &, int status))
219 : callback<void (child_watcher &, int)> (object, method), pid (0)
220 { }
221 ~child_watcher () { stop (); }
222};
223#endif
224
225#endif
226

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