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This class holds a Mutex array. Mutexes can be retrieved based on object pointers. A mutex pool can be used to associate a smaller set of Mutex objects with a much larger set of objects needing lock.
MutexPool (unsigned int len = 13, bool recursive = false, const char* name = 0)
| MutexPool |
Build the mutex pool
Parameters:
len | The number of mutex objects to build. The length should be an odd number to obtain an optimal distribution of pointer based mutexes (usually pointers are aligned at even addresses): some mutexes might never get used if the length is an even number |
recursive | True if the mutex has to be recursive (reentrant), false for a normal fast mutex |
name | Static name of the mutex (for debugging purpose only) |
~MutexPool ()
| ~MutexPool |
Destructor. Release data
inline unsigned int index (void* ptr)
| index |
[const]
Build an index from object pointer (pointer value modulo array length). Always cast the pointer to the same type when calling this method to make sure the same index is returned for a given object
Parameters:
ptr | The pointer to object |
Returns: Valid array index
inline Mutex* mutex (void* ptr)
| mutex |
[const]
Retrieve the mutex associated with a given pointer. Always cast the pointer to the same type when calling this method to make sure the same mutex is returned for a given object
Parameters:
ptr | The pointer to object |
Returns: Valid Mutex pointer
inline Mutex* mutex (unsigned int idx)
| mutex |
[const]
Retrieve the mutex at a given index modulo array length
Parameters:
idx | The index |
Returns: Valid Mutex pointer
Generated by: paulc on bussard on Fri Dec 21 16:28:34 2012, using kdoc 2.0a54. |