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kresolverworkerbase.h
1 /*
2  * Copyright (C) 2003,2004 Thiago Macieira <thiago.macieira@kdemail.net>
3  *
4  *
5  * Permission is hereby granted, free of charge, to any person obtaining
6  * a copy of this software and associated documentation files (the
7  * "Software"), to deal in the Software without restriction, including
8  * without limitation the rights to use, copy, modify, merge, publish,
9  * distribute, sublicense, and/or sell copies of the Software, and to
10  * permit persons to whom the Software is furnished to do so, subject to
11  * the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be included
14  * in all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
20  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
21  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
22  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23  */
24 
25 #ifndef KRESOLVERWORKERBASE_H
26 #define KRESOLVERWORKERBASE_H
27 
28 #include "kresolver.h"
29 
30 // forward declarations
31 class TQString;
32 template <class T> class TQValueList;
33 
34 namespace KNetwork {
35 
36  namespace Internal
37  {
38  class KResolverThread;
39  struct InputData;
40  }
41 
60 class KResolverWorkerBase
61 {
62 public:
63 
71  class ResolverLocker
72  {
73  public:
77  ResolverLocker(KResolverWorkerBase* parent)
78  : parent( parent )
79  {
80  parent->acquireResolver();
81  }
82 
86  ~ResolverLocker()
87  {
88  parent->releaseResolver();
89  }
90 
96  void openClose()
97  {
98  parent->releaseResolver();
99  parent->acquireResolver();
100  }
101 
102  private:
104  KResolverWorkerBase* parent;
105  };
106 private:
107  // this will be like our d pointer
108  KNetwork::Internal::KResolverThread *th;
109  const KNetwork::Internal::InputData *input;
110  friend class KNetwork::Internal::KResolverThread;
111  friend class KNetwork::Internal::KResolverManager;
112  friend class KResolverWorkerBase::ResolverLocker;
113 
114  int m_finished : 1;
115  int m_reserved : 31; // reserved
116 
117 public:
125  KResolverResults results;
126 
127 public:
128  // default constructor
129  KResolverWorkerBase();
130 
131  // virtual destructor
132  virtual ~KResolverWorkerBase();
133 
137  TQString nodeName() const;
138 
142  TQString serviceName() const;
143 
147  int flags() const;
148 
152  int familyMask() const;
153 
157  int socketType() const;
158 
162  int protocol() const;
163 
167  TQCString protocolName() const;
168 
175  void finished();
176 
177 protected:
178  // like a QThread
191  virtual bool run() = 0;
192 
212  virtual bool preprocess() = 0;
213 
222  virtual bool postprocess();
223 
227  inline void setError(int errorcode, int syserror = 0)
228  { results.setError(errorcode, syserror); }
229 
245  bool enqueue(KResolver* other);
246 
250  bool enqueue(KResolverWorkerBase* worker);
251 
259  bool checkResolver();
260 
272  void acquireResolver();
273 
280  void releaseResolver();
281 
282 };
283 
289 class KResolverWorkerFactoryBase
290 {
291 public:
292  // default constructor
293  KResolverWorkerFactoryBase();
294 
295  // virtual destructor
296  virtual ~KResolverWorkerFactoryBase();
297 
298  virtual KResolverWorkerBase* create() const = 0;
299 
305  static void registerNewWorker(KResolverWorkerFactoryBase* factory);
306 };
307 
313 template<class Worker>
314 class KResolverWorkerFactory: public KResolverWorkerFactoryBase
315 {
316 public:
317  virtual KResolverWorkerBase* create() const
318  { return new Worker; }
319 };
320 
321 } // namespace KNetwork
322 
323 #endif
KNetwork::KResolverWorkerBase::ResolverLocker::~ResolverLocker
~ResolverLocker()
Destructor.
Definition: kresolverworkerbase.h:86
KNetwork::KResolverWorkerBase::ResolverLocker
Helper class for locking the resolver subsystem.
Definition: kresolverworkerbase.h:71
KNetwork::KResolverResults
Name and service resolution results.
Definition: kresolver.h:197
KNetwork
A namespace to store all networking-related (socket) classes.
Definition: kbufferedsocket.h:36
KNetwork::KResolverWorkerBase::ResolverLocker::ResolverLocker
ResolverLocker(KResolverWorkerBase *parent)
Constructor.
Definition: kresolverworkerbase.h:77
KNetwork::KResolverWorkerBase::ResolverLocker::openClose
void openClose()
Releases the lock and then reacquires it.
Definition: kresolverworkerbase.h:96
KStdAction::create
TDEAction * create(StdAction id, const char *name, const TQObject *recvr, const char *slot, TDEActionCollection *parent)
KNetwork::KResolverResults::setError
void setError(int errorcode, int systemerror=0)
Sets the error codes.
Definition: kresolver.cpp:259

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