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           PEGASUS_NAMESPACE_BEGIN
 40           
 41           template<class T>

 42 schuur 1.7 class SafeQueue

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

 78 kumpf  1.5     AutoMutex lock(_mutex);

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

 86 kumpf  1.5     AutoMutex lock(_mutex);

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

 98 kumpf  1.5     AutoMutex lock(_mutex);

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

106 kumpf  1.5     AutoMutex lock(_mutex);

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

114 kumpf  1.5     AutoMutex lock(_mutex);

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

122 kumpf  1.5     AutoMutex lock(_mutex);

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

130 kumpf  1.5     AutoMutex lock(_mutex);

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