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 1.6 #include <Pegasus/ProviderManager2/Linkage.h>

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

 44 schuur 1.6 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