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
|
/* This file is part of the KDE project
Copyright (C) 2003 Simon Hausmann <hausmann@kde.org>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "walker.h"
#include <qapplication.h>
#include <functional>
#include <algorithm>
using namespace KSim::Snmp;
namespace
{
template <class T>
struct Deleter : public std::unary_function<T, void>
{
void operator()( T arg )
{ delete arg; }
};
}
static const uint walkerRefresh = 0;
Walker::Walker( const HostConfig &host, const Identifier &startOid, QObject *parent, const char *name )
: QObject( parent, name ), m_stop( false ), m_oid( startOid ), m_session( host )
{
m_timerId = startTimer( walkerRefresh );
start();
}
Walker::~Walker()
{
m_stopGuard.lock();
m_stop = true;
m_stopGuard.unlock();
if ( QThread::running() )
QThread::wait();
std::for_each( m_results.begin(), m_results.end(), Deleter<Result *>() );
}
void Walker::run()
{
while ( !m_stop ) {
Result *result = new Result;
result->success = m_session.snmpGetNext( m_oid, result->data, &result->error );
result->oid = m_oid;
// do it here, because it sometimes is slow and can block for a bit
if ( result->success ) {
result->identifierString = result->oid.toString();
result->dataString = result->data.toString();
}
m_stopGuard.lock();
if ( !m_stop )
m_stop = !result->success;
m_stopGuard.unlock();
m_resultGuard.lock();
m_results << result;
m_resultGuard.unlock();
}
// cause finished signal to be emitted
QApplication::postEvent( this, new QCustomEvent( QEvent::User ) );
}
void Walker::timerEvent( QTimerEvent *ev )
{
if ( ev->timerId() != m_timerId )
return;
Result *result = 0;
m_resultGuard.lock();
if ( !m_results.isEmpty() ) {
result = m_results.first();
m_results.remove( m_results.begin() );
}
m_resultGuard.unlock();
if ( result ) {
emit resultReady( *result );
delete result;
}
if ( !QThread::running() && !result ) {
killTimer( m_timerId );
m_timerId = 0;
}
}
void Walker::customEvent( QCustomEvent * )
{
emit finished();
}
#include "walker.moc"
/* vim: et sw=4 ts=4
*/
|
