Mercurial Repositories > eric / file comparison
comparison: E5Utilities/E5Cache.py
E5Utilities/E5Cache.py
- changeset 5903
- 7e7002215f9e
- parent 5888
- f23f3d2b7516
- child 5909
- 21d90a3abc7c
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| 5902:fb4b68592b7c | 5903:7e7002215f9e |
|---|---|
| 8 """ | 8 """ |
| 9 | 9 |
| 10 from __future__ import unicode_literals | 10 from __future__ import unicode_literals |
| 11 | 11 |
| 12 | 12 |
| 13 # TODO: add timeout for cached entries | |
| 13 class E5Cache(object): | 14 class E5Cache(object): |
| 14 """ | 15 """ |
| 15 Class implementing a LRU cache of a specific size. | 16 Class implementing a LRU cache of a specific size. |
| 16 | 17 |
| 17 If the maximum number of entries is exceeded, the least recently used item | 18 If the maximum number of entries is exceeded, the least recently used item |
| 48 | 49 |
| 49 def __adjustToSize(self): | 50 def __adjustToSize(self): |
| 50 """ | 51 """ |
| 51 Private method to adjust the cache to its size. | 52 Private method to adjust the cache to its size. |
| 52 """ | 53 """ |
| 53 while len(self.__keyList) > self.__size: | 54 removeList, self.__keyList = \ |
| 54 key = self.__keyList.pop(0) | 55 self.__keyList[:-self.__size], self.__keyList[-self.__size:] |
| 56 for key in removeList: | |
| 55 del self.__store[key] | 57 del self.__store[key] |
| 56 | 58 |
| 57 def getSize(self): | 59 def getSize(self): |
| 58 """ | 60 """ |
| 59 Public method to get the size of the cache. | 61 Public method to get the maximum size of the cache. |
| 60 | 62 |
| 61 @return maximum number of entries of the cache | 63 @return maximum number of entries of the cache |
| 62 @rtype int | 64 @rtype int |
| 63 """ | 65 """ |
| 64 return self.__size | 66 return self.__size |
| 65 | 67 |
| 66 def setSize(self, newSize): | 68 def setSize(self, newSize): |
| 67 """ | 69 """ |
| 68 Public method to change the size of the cache. | 70 Public method to change the maximum size of the cache. |
| 69 | 71 |
| 70 @param newSize maximum number of entries that may be stored in the | 72 @param newSize maximum number of entries that may be stored in the |
| 71 cache | 73 cache |
| 72 @type int | 74 @type int |
| 73 """ | 75 """ |
