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comparison mercurial/manifest.py @ 41962:07c80298b5a1

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manifestcache: abstract the filename in a class attribute This make the code clearer and simpler to update.
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Fri, 15 Mar 2019 12:17:30 +0000
parents c3522b015f81
children d121823072b8
comparison
equal deleted inserted replaced
41961:c3522b015f81 41962:07c80298b5a1
1274 - 20 bytes node, 4 bytes length, <length> manifest data 1274 - 20 bytes node, 4 bytes length, <length> manifest data
1275 1275
1276 These are written in reverse cache order (oldest to newest). 1276 These are written in reverse cache order (oldest to newest).
1277 1277
1278 """ 1278 """
1279
1280 _file = 'manifestfulltextcache'
1281
1279 def __init__(self, max): 1282 def __init__(self, max):
1280 super(manifestfulltextcache, self).__init__(max) 1283 super(manifestfulltextcache, self).__init__(max)
1281 self._dirty = False 1284 self._dirty = False
1282 self._read = False 1285 self._read = False
1283 self._opener = None 1286 self._opener = None
1285 def read(self): 1288 def read(self):
1286 if self._read or self._opener is None: 1289 if self._read or self._opener is None:
1287 return 1290 return
1288 1291
1289 try: 1292 try:
1290 with self._opener('manifestfulltextcache') as fp: 1293 with self._opener(self._file) as fp:
1291 set = super(manifestfulltextcache, self).__setitem__ 1294 set = super(manifestfulltextcache, self).__setitem__
1292 # ignore trailing data, this is a cache, corruption is skipped 1295 # ignore trailing data, this is a cache, corruption is skipped
1293 while True: 1296 while True:
1294 node = fp.read(20) 1297 node = fp.read(20)
1295 if len(node) < 20: 1298 if len(node) < 20:
1311 1314
1312 def write(self): 1315 def write(self):
1313 if not self._dirty or self._opener is None: 1316 if not self._dirty or self._opener is None:
1314 return 1317 return
1315 # rotate backwards to the first used node 1318 # rotate backwards to the first used node
1316 with self._opener( 1319 with self._opener(self._file, 'w', atomictemp=True, checkambig=True
1317 'manifestfulltextcache', 'w', atomictemp=True, checkambig=True
1318 ) as fp: 1320 ) as fp:
1319 node = self._head.prev 1321 node = self._head.prev
1320 while True: 1322 while True:
1321 if node.key in self._cache: 1323 if node.key in self._cache:
1322 fp.write(node.key) 1324 fp.write(node.key)