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Comparing rxvt-unicode/src/iom.h (file contents):
Revision 1.20 by root, Fri Nov 12 12:43:27 2004 UTC vs.
Revision 1.30 by root, Thu Oct 25 10:44:14 2007 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)
43
44//#define IOM_LIBEVENT "event.h" *NOT* a supported feature
45#ifdef IOM_LIBEVENT
46# include <sys/time.h>
47# include IOM_LIBEVENT
48# undef IOM_IO
49# define IOM_IO 1
50#endif
49 51
50struct watcher; 52struct watcher;
51#if IOM_IO 53#if IOM_IO
52struct io_watcher; 54struct io_watcher;
53#endif 55#endif
… …
60#if IOM_IDLE 62#if IOM_IDLE
61struct idle_watcher; 63struct idle_watcher;
62#endif 64#endif
63#if IOM_SIG 65#if IOM_SIG
64struct sig_watcher; 66struct sig_watcher;
67#endif
68#if IOM_CHILD
69struct child_watcher;
65#endif 70#endif
66 71
67template<class watcher> 72template<class watcher>
68struct io_manager_vec : vector<watcher *> { 73struct io_manager_vec : vector<watcher *> {
69 void erase_unordered (unsigned int pos) 74 void erase_unordered (unsigned int pos)
… …
84 89
85 template<class watcher> 90 template<class watcher>
86 static void unreg (watcher &w, io_manager_vec<watcher> &queue); 91 static void unreg (watcher &w, io_manager_vec<watcher> &queue);
87 92
88public: 93public:
94#if IOM_TIME
95 // fetch time only
96 static tstamp now ();
97
98 // set NOW
99 static void set_now ();
100#endif
101
89 // register a watcher 102 // register a watcher
103#ifndef IOM_LIBEVENT
90#if IOM_IO 104#if IOM_IO
91 static void reg (io_watcher &w); static void unreg (io_watcher &w); 105 static void reg (io_watcher &w); static void unreg (io_watcher &w);
92#endif 106#endif
93#if IOM_TIME 107#if IOM_TIME
94 static void reg (time_watcher &w); static void unreg (time_watcher &w); 108 static void reg (time_watcher &w); static void unreg (time_watcher &w);
95#endif 109#endif
110#if IOM_SIG
111 static void reg (sig_watcher &w); static void unreg (sig_watcher &w);
112#endif
96#if IOM_CHECK 113#if IOM_CHECK
97 static void reg (check_watcher &w); static void unreg (check_watcher &w); 114 static void reg (check_watcher &w); static void unreg (check_watcher &w);
98#endif 115#endif
116#endif
99#if IOM_IDLE 117#if IOM_IDLE
100 static void reg (idle_watcher &w); static void unreg (idle_watcher &w); 118 static void reg (idle_watcher &w); static void unreg (idle_watcher &w);
101#endif 119#endif
102#if IOM_SIG 120#if IOM_CHILD
103 static void reg (sig_watcher &w); static void unreg (sig_watcher &w); 121 static void reg (child_watcher &w); static void unreg (child_watcher &w);
104#endif 122#endif
105 123
106 static void loop (); 124 static void loop ();
107}; 125};
108 126
109struct watcher { 127struct watcher {
110 int active; /* 0 == inactive, else index into respective vector */ 128 int active; /* 0 == inactive, else index into respective vector */
111 129
130 bool is_active () { return active; }
131
112 watcher () : active (0) { } 132 watcher () : active (0) { }
113}; 133};
114 134
115#if IOM_IO 135#if IOM_IO
116enum { EVENT_READ = 1, EVENT_WRITE = 2 }; 136#ifdef IOM_LIBEVENT
137enum { EVENT_UNDEF = -1, EVENT_NONE = 0, EVENT_READ = EV_READ, EVENT_WRITE = EV_WRITE };
117 138
139void iom_io_c_callback (int fd, short events, void *data);
140
118struct io_watcher : watcher, callback2<void, io_watcher &, short> { 141struct io_watcher : watcher, callback<void (io_watcher &, short)> {
142 struct event ev;
143 int fd;
144
145 void set (int fd_, short events_) { fd = fd_; event_set (&ev, fd_, events_, iom_io_c_callback, (void *)this); }
146
147 void set (short events_) { set (fd, events_); }
148 void start () { event_add (&ev, 0); active = 1; }
149 void start (int fd_, short events_) { set (fd_, events_); start (); }
150 void stop () { if (active) event_del (&ev); active = 0; }
151
152 template<class O, class M>
153 io_watcher (O object, M method)
154 : callback<void (io_watcher &, short)> (object, method)
155 { }
156 ~io_watcher () { stop (); }
157};
158#else
159enum { EVENT_UNDEF = -1, EVENT_NONE = 0, EVENT_READ = 1, EVENT_WRITE = 2 };
160
161struct io_watcher : watcher, callback<void (io_watcher &, short)> {
119 int fd; 162 int fd;
120 short events; 163 short events;
121 164
122 void set (int fd_, short events_) { fd = fd_; events = events_; } 165 void set (int fd_, short events_) { fd = fd_; events = events_; }
123 166
124 void set (short events_) { set (fd, events_); } 167 void set (short events_) { set (fd, events_); }
125 void start () { io_manager::reg (*this); } 168 void start () { io_manager::reg (*this); }
126 void start (int fd_, short events_) { set (fd_, events_); io_manager::reg (*this); } 169 void start (int fd_, short events_) { set (fd_, events_); start (); }
127 void stop () { io_manager::unreg (*this); } 170 void stop () { io_manager::unreg (*this); }
128 171
129 template<class O1, class O2> 172 template<class O, class M>
130 io_watcher (O1 *object, void (O2::*method) (io_watcher &, short)) 173 io_watcher (O object, M method)
131 : callback2<void, io_watcher &, short> (object,method) 174 : callback<void (io_watcher &, short)> (object, method)
132 { } 175 { }
133 ~io_watcher () { stop (); } 176 ~io_watcher () { stop (); }
134}; 177};
135#endif 178#endif
179#endif
136 180
137#if IOM_TIME 181#if IOM_TIME
182#ifdef IOM_LIBEVENT
183void iom_time_c_callback (int fd, short events, void *data);
184
138struct time_watcher : watcher, callback1<void, time_watcher &> { 185struct time_watcher : watcher, callback<void (time_watcher &)> {
186 struct event ev;
139 tstamp at; 187 tstamp at;
140 188
141 void trigger (); 189 void trigger ();
142 190
143 void set (tstamp when) { at = when; } 191 void set (tstamp when) { at = when; }
144 void operator () () { trigger (); } 192 void operator () () { trigger (); }
145 void start () { io_manager::reg (*this); } 193 void start ()
194 {
195 struct timeval tv;
196 tv.tv_sec = (long)at;
197 tv.tv_usec = (long)((at - (tstamp)tv.tv_sec) * 1000000.);
198 evtimer_add (&ev, &tv);
199 active = 1;
200 }
146 void start (tstamp when) { set (when); io_manager::reg (*this); } 201 void start (tstamp when) { set (when); start (); }
147 void stop () { io_manager::unreg (*this); } 202 void stop () { if (active) evtimer_del (&ev); active = 0; }
148 203
149 template<class O1, class O2> 204 template<class O, class M>
150 time_watcher (O1 *object, void (O2::*method) (time_watcher &)) 205 time_watcher (O object, M method)
151 : callback1<void, time_watcher &> (object,method), at (0) 206 : callback<void (time_watcher &)> (object, method), at (0)
152 { } 207 {
208 evtimer_set (&ev, iom_time_c_callback, (void *)this);
209 }
153 ~time_watcher () { stop (); } 210 ~time_watcher () { stop (); }
154}; 211};
212#else
213struct time_watcher : watcher, callback<void (time_watcher &)> {
214 tstamp at;
215
216 void trigger ();
217
218 void set (tstamp when) { at = when; }
219 void operator () () { trigger (); }
220 void start () { io_manager::reg (*this); }
221 void start (tstamp when) { set (when); start (); }
222 void stop () { io_manager::unreg (*this); }
223
224 template<class O, class M>
225 time_watcher (O object, M method)
226 : callback<void (time_watcher &)> (object, method), at (0)
227 { }
228 ~time_watcher () { stop (); }
229};
230#endif
155#endif 231#endif
156 232
157#if IOM_CHECK 233#if IOM_CHECK
158// run before checking for new events 234// run before checking for new events
159struct check_watcher : watcher, callback1<void, check_watcher &> { 235struct check_watcher : watcher, callback<void (check_watcher &)> {
160 void start () { io_manager::reg (*this); }
161 void stop () { io_manager::unreg (*this); } 236 void start () { io_manager::reg (*this); }
237 void stop () { io_manager::unreg (*this); }
162 238
163 template<class O1, class O2> 239 template<class O, class M>
164 check_watcher (O1 *object, void (O2::*method) (check_watcher &)) 240 check_watcher (O object, M method)
165 : callback1<void, check_watcher &> (object,method) 241 : callback<void (check_watcher &)> (object, method)
166 { } 242 { }
167 ~check_watcher () { stop (); } 243 ~check_watcher () { stop (); }
168}; 244};
169#endif 245#endif
170 246
171#if IOM_IDLE 247#if IOM_IDLE
172// run after checking for any i/o, but before waiting 248// run after checking for any i/o, but before waiting
173struct idle_watcher : watcher, callback1<void, idle_watcher &> { 249struct idle_watcher : watcher, callback<void (idle_watcher &)> {
174 void start () { io_manager::reg (*this); }
175 void stop () { io_manager::unreg (*this); } 250 void start () { io_manager::reg (*this); }
251 void stop () { io_manager::unreg (*this); }
176 252
177 template<class O1, class O2> 253 template<class O, class M>
178 idle_watcher (O1 *object, void (O2::*method) (idle_watcher &)) 254 idle_watcher (O object, M method)
179 : callback1<void, idle_watcher &> (object,method) 255 : callback<void (idle_watcher &)> (object, method)
180 { } 256 { }
181 ~idle_watcher () { stop (); } 257 ~idle_watcher () { stop (); }
182}; 258};
183#endif 259#endif
184 260
185#if IOM_SIG 261#if IOM_SIG
186struct sig_watcher : watcher, callback1<void, sig_watcher &> { 262struct sig_watcher : watcher, callback<void (sig_watcher &)> {
187 int signum; 263 int signum;
188 264
189 void start (int signum); 265 void start (int signum);
190 void stop () { io_manager::unreg (*this); } 266 void stop () { io_manager::unreg (*this); }
191 267
192 template<class O1, class O2> 268 template<class O, class M>
193 sig_watcher (O1 *object, void (O2::*method) (sig_watcher &)) 269 sig_watcher (O object, M method)
194 : callback1<void, sig_watcher &> (object,method), signum (-1) 270 : callback<void(sig_watcher &)> (object, method), signum (0)
195 { } 271 { }
196 ~sig_watcher () { stop (); } 272 ~sig_watcher () { stop (); }
197}; 273};
198#endif 274#endif
199 275
200#endif 276#if IOM_CHILD
277struct child_watcher : watcher, callback<void (child_watcher &, int)> {
278 int /*pid_t*/ pid;
201 279
280 void start (int pid) { this->pid = pid; io_manager::reg (*this); }
281 void stop () { io_manager::unreg (*this); }
282
283 template<class O, class M>
284 child_watcher (O object, M method)
285 : callback<void (child_watcher &, int)> (object, method), pid (0)
286 { }
287 ~child_watcher () { stop (); }
288};
289#endif
290
291#endif
292

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