1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
// Timer.cc for FbTk - Fluxbox Toolkit
// Copyright (c) 2003 Henrik Kinnunen (fluxgen at users.sourceforge.net)
//
// Timer.cc for Blackbox - An X11 Window Manager
// Copyright (c) 1997 - 2000 Brad Hughes (bhughes at tcac.net)
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
#include "Timer.hh"
#include "Command.hh"
//use GNU extensions
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif // _GNU_SOURCE
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif // HAVE_CONFIG_H
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#ifdef HAVE_CASSERT
#include <cassert>
#else
#include <assert.h>
#endif
namespace FbTk {
Timer::TimerList Timer::m_timerlist;
Timer::Timer():m_timing(false), m_once(false) {
}
Timer::Timer(RefCount<Command> &handler):
m_handler(handler),
m_timing(false),
m_once(false) {
}
Timer::~Timer() {
if (isTiming()) stop();
}
void Timer::setTimeout(time_t t) {
m_timeout.tv_sec = t / 1000;
m_timeout.tv_usec = t;
m_timeout.tv_usec -= (m_timeout.tv_sec * 1000);
m_timeout.tv_usec *= 1000;
}
void Timer::setTimeout(timeval t) {
m_timeout.tv_sec = t.tv_sec;
m_timeout.tv_usec = t.tv_usec;
}
void Timer::setCommand(RefCount<Command> &cmd) {
m_handler = cmd;
}
void Timer::start() {
gettimeofday(&m_start, 0);
// only add Timers that actually DO something
if (! m_timing && *m_handler) {
m_timing = true;
addTimer(this); //add us to the list
}
}
void Timer::stop() {
m_timing = false;
removeTimer(this); //remove us from the list
}
void Timer::fireTimeout() {
if (*m_handler)
m_handler->execute();
}
void Timer::updateTimers(int fd) {
fd_set rfds;
timeval now, tm, *timeout = 0;
FD_ZERO(&rfds);
FD_SET(fd, &rfds);
if (m_timerlist.size() > 0) {
gettimeofday(&now, 0);
tm.tv_sec = tm.tv_usec = 0l;
Timer *timer = m_timerlist.front();
tm.tv_sec = timer->getStartTime().tv_sec +
timer->getTimeout().tv_sec - now.tv_sec;
tm.tv_usec = timer->getStartTime().tv_usec +
timer->getTimeout().tv_usec - now.tv_usec;
while (tm.tv_usec >= 1000000) {
tm.tv_sec++;
tm.tv_usec -= 1000000;
}
while (tm.tv_usec < 0) {
if (tm.tv_sec > 0) {
tm.tv_sec--;
tm.tv_usec += 1000000;
} else {
tm.tv_usec = 0;
break;
}
}
timeout = &tm;
}
select(fd + 1, &rfds, 0, 0, timeout);
TimerList::iterator it;
// someone set the date of the machine BACK
// so we have to adjust the start_time
static time_t last_time = time(0);
if (time(0) < last_time) {
time_t delta = time(0) - last_time;
for (it = m_timerlist.begin(); it != m_timerlist.end(); it++) {
(*it)->m_start.tv_sec += delta;
}
}
// check for timer timeout
gettimeofday(&now, 0);
//must check end ...the timer might remove
//it self from the list (should be fixed in the future)
for(it = m_timerlist.begin(); it != m_timerlist.end(); ) {
//This is to make sure we don't get an invalid iterator
//when we do fireTimeout
Timer &t = *(*it);
tm.tv_sec = t.getStartTime().tv_sec +
t.getTimeout().tv_sec;
tm.tv_usec = t.getStartTime().tv_usec +
t.getTimeout().tv_usec;
if (((now.tv_sec < tm.tv_sec) ||
(now.tv_sec == tm.tv_sec && now.tv_usec < tm.tv_usec)))
break;
t.fireTimeout();
// restart the current timer so that the start time is updated
if (! t.doOnce()) {
t.start();
// Note that this mustn't be done if we're deleting the
// entry from the list, so therefore it's not in the update
// section of the for loop
it++;
} else {
// Since the default stop behaviour results in the timer
// being removed, we must remove it here, so that the iterator
// lives well. Another option would be to add it to another
// list, and then just go through that list and stop them all.
it = m_timerlist.erase(it);
t.stop();
}
}
last_time = time(0);
}
void Timer::addTimer(Timer *timer) {
assert(timer);
TimerList::iterator it = m_timerlist.begin();
TimerList::iterator it_end = m_timerlist.end();
int index = 0;
for (; it != it_end; ++it, ++index) {
if (((*it)->getTimeout().tv_sec > timer->getTimeout().tv_sec) ||
(((*it)->getTimeout().tv_sec == timer->getTimeout().tv_sec) &&
((*it)->getTimeout().tv_usec >= timer->getTimeout().tv_usec))) {
break;
}
}
m_timerlist.insert(it, timer);
}
void Timer::removeTimer(Timer *timer) {
assert(timer);
m_timerlist.remove(timer);
}
}; // end namespace FbTk
|
