1 /*=============================================================================
2 
3   Library: CTK
4 
5   Copyright (c) German Cancer Research Center,
6     Division of Medical and Biological Informatics
7 
8   Licensed under the Apache License, Version 2.0 (the "License");
9   you may not use this file except in compliance with the License.
10   You may obtain a copy of the License at
11 
12     http://www.apache.org/licenses/LICENSE-2.0
13 
14   Unless required by applicable law or agreed to in writing, software
15   distributed under the License is distributed on an "AS IS" BASIS,
16   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17   See the License for the specific language governing permissions and
18   limitations under the License.
19 
20 =============================================================================*/
21 
22 
23 #ifndef CTKEATHREADFACTORYUSER_P_H
24 #define CTKEATHREADFACTORYUSER_P_H
25 
26 #include <QMutex>
27 
28 #include "ctkEAThreadFactory_p.h"
29 #include "ctkEAInterruptibleThread_p.h"
30 
31 /**
32  * Base class for Executors and related classes that rely on thread factories.
33  * Generally intended to be used as a mixin-style abstract class, but
34  * can also be used stand-alone.
35  */
36 class ctkEAThreadFactoryUser
37 {
38 
39 protected:
40 
41   mutable QMutex mutex;
42 
43   ctkEAThreadFactory* threadFactory;
44 
45   class DefaultThread : public ctkEAInterruptibleThread
46   {
47   public:
48 
49     DefaultThread(ctkEARunnable* command);
50 
51     void run();
52 
53   private:
54 
55     ctkEARunnable* command;
56     bool deleteCmd;
57   };
58 
59   class DefaultThreadFactory : public ctkEAThreadFactory
60   {
61   public:
62 
63     ctkEAInterruptibleThread* newThread(ctkEARunnable* command);
64   };
65 
66   ctkEAThreadFactoryUser();
67 
68   ~ctkEAThreadFactoryUser();
69 
70   /**
71    * Set the factory for creating new threads.
72    * By default, new threads are created without any special priority,
73    * threadgroup, or status parameters.
74    * You can use a different factory
75    * to change the kind of Thread class used or its construction
76    * parameters.
77    * @param factory the factory to use
78    * @return the previous factory
79    */
80   ctkEAThreadFactory* setThreadFactory(ctkEAThreadFactory* factory);
81 
82   /**
83    * Get the factory for creating new threads.
84    */
85   ctkEAThreadFactory* getThreadFactory();
86 
87 };
88 
89 #endif // CTKEATHREADFACTORYUSER_P_H
90