1 karl  1.3 //%2003////////////////////////////////////////////////////////////////////////

  2 chip  1.1 //

  3 karl  1.3 // Copyright (c) 2000, 2001, 2002  BMC Software, Hewlett-Packard Development
  4           // Company, L. P., IBM Corp., The Open Group, Tivoli Systems.
  5           // Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L. P.;
  6           // IBM Corp.; EMC Corporation, The Open Group.

  7 chip  1.1 //
  8           // Permission is hereby granted, free of charge, to any person obtaining a copy
  9           // of this software and associated documentation files (the "Software"), to
 10           // deal in the Software without restriction, including without limitation the
 11           // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 12           // sell copies of the Software, and to permit persons to whom the Software is
 13           // furnished to do so, subject to the following conditions:

 14 karl  1.3 // 

 15 chip  1.1 // THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN
 16           // ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED
 17           // "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
 18           // LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
 19           // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 20           // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 21           // ACTION 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           //
 26           // Author: Chip Vincent (cvincent@us.ibm.com)
 27           //
 28           // Modified By:
 29           //
 30           //%/////////////////////////////////////////////////////////////////////////////
 31           
 32           #ifndef Pegasus_SafeQueue_h
 33           #define Pegasus_SafeQueue_h
 34           
 35           #include <Pegasus/Common/Config.h>
 36 chip  1.1 #include <Pegasus/Common/Queue.h>

 37 kumpf 1.5 #include <Pegasus/Common/IPC.h>

 38 chip  1.1 

 39 schuur 1.5.6.1 #include <Pegasus/ProviderManager2/Linkage.h>

 40 chip   1.1     
 41                PEGASUS_NAMESPACE_BEGIN
 42                
 43                template<class T>

 44 schuur 1.5.6.1 class PEGASUS_PPM_LINKAGE SafeQueue

 45 chip   1.1     {
 46                public:
 47                    SafeQueue(void);
 48                    virtual ~SafeQueue(void);
 49                
 50                    void enqueue(const T & O);
 51                    T dequeue(void);
 52                
 53                    T & front(void);
 54                    const T & front(void) const;
 55                
 56                    T & back(void);
 57                    const T & back(void) const;
 58                
 59                    Uint32 size(void) const;
 60                
 61                protected:
 62                    mutable Mutex _mutex;
 63                    Queue<T> _queue;
 64                
 65                };
 66 chip   1.1     
 67                template<class T>
 68                SafeQueue<T>::SafeQueue(void)
 69                {
 70                }
 71                
 72                template<class T>
 73                SafeQueue<T>::~SafeQueue(void)
 74                {
 75                }
 76                
 77                template<class T>
 78                void SafeQueue<T>::enqueue(const T & O)
 79                {

 80 kumpf  1.5         AutoMutex lock(_mutex);

 81 chip   1.1     
 82                    _queue.enqueue(O);
 83                }
 84                
 85                template<class T>
 86                T SafeQueue<T>::dequeue(void)
 87                {

 88 kumpf  1.5         AutoMutex lock(_mutex);

 89 chip   1.1     
 90                    T O = _queue.front();
 91                
 92                    _queue.dequeue();
 93                
 94                    return(O);
 95                }
 96                
 97                template<class T>
 98                T & SafeQueue<T>::front(void)
 99                {

100 kumpf  1.5         AutoMutex lock(_mutex);

101 chip   1.1     
102                    return(_queue.front());
103                }
104                
105                template<class T>
106                const T & SafeQueue<T>::front(void) const
107                {

108 kumpf  1.5         AutoMutex lock(_mutex);

109 chip   1.1     
110                    return(_queue.front());
111                }
112                
113                template<class T>
114                T & SafeQueue<T>::back(void)
115                {

116 kumpf  1.5         AutoMutex lock(_mutex);

117 chip   1.1     
118                    return(_queue.back());
119                }
120                
121                template<class T>
122                const T & SafeQueue<T>::back(void) const
123                {

124 kumpf  1.5         AutoMutex lock(_mutex);

125 chip   1.1     
126                    return(_queue.back());
127                }
128                
129                template<class T>
130                Uint32 SafeQueue<T>::size(void) const
131                {

132 kumpf  1.5         AutoMutex lock(_mutex);

133 chip   1.1     
134                    return(_queue.size());
135                }
136                
137                PEGASUS_NAMESPACE_END
138                
139                #endif