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comparison mercurial/revlog.py @ 2250:45aef5ddcdbe

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windows: revlog.lazyparser not always safe to use. can not use on windows < nt or if win32 api not available.
author Vadim Gelfer <vadim.gelfer@gmail.com>
date Wed, 10 May 2006 11:10:18 -0700
parents c9e264b115e6
children 3f38e872f39a
comparison
equal deleted inserted replaced
2249:3e5fbf001f9b 2250:45aef5ddcdbe
85 85
86 class lazyparser(object): 86 class lazyparser(object):
87 """ 87 """
88 this class avoids the need to parse the entirety of large indices 88 this class avoids the need to parse the entirety of large indices
89 """ 89 """
90
91 # lazyparser is not safe to use on windows if win32 extensions not
92 # available. it keeps file handle open, which make it not possible
93 # to break hardlinks on local cloned repos.
94 safe_to_use = os.name != 'nt' or (not util.is_win_9x() and
95 hasattr(util, 'win32api'))
96
90 def __init__(self, dataf, size, indexformat, shaoffset): 97 def __init__(self, dataf, size, indexformat, shaoffset):
91 self.dataf = dataf 98 self.dataf = dataf
92 self.format = indexformat 99 self.format = indexformat
93 self.s = struct.calcsize(indexformat) 100 self.s = struct.calcsize(indexformat)
94 self.indexformat = indexformat 101 self.indexformat = indexformat
360 else: 367 else:
361 self.indexformat = indexformatng 368 self.indexformat = indexformatng
362 shaoffset = ngshaoffset 369 shaoffset = ngshaoffset
363 370
364 if i: 371 if i:
365 if not self.inlinedata() and st and st.st_size > 10000: 372 if (lazyparser.safe_to_use and not self.inlinedata() and
373 st and st.st_size > 10000):
366 # big index, let's parse it on demand 374 # big index, let's parse it on demand
367 parser = lazyparser(f, st.st_size, self.indexformat, shaoffset) 375 parser = lazyparser(f, st.st_size, self.indexformat, shaoffset)
368 self.index = lazyindex(parser) 376 self.index = lazyindex(parser)
369 self.nodemap = lazymap(parser) 377 self.nodemap = lazymap(parser)
370 else: 378 else: