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comparison mercurial/obsolete.py @ 23499:b46876c94a93

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obsstore: cache size computation for fm1 node We have two different types of node type (sha1 and sha256, only sha1 is used now) and therefor different sizes for them. We now compute the value once instead of redoing the computation every loop. This has no visible performance impact.
author Pierre-Yves David <pierre-yves.david@fb.com>
date Wed, 26 Nov 2014 23:23:33 -0800
parents ac910b1f5658
children 48284b8f6073
comparison
equal deleted inserted replaced
23498:ac910b1f5658 23499:b46876c94a93
274 # - remaining bytes: the metadata, each (key, value) pair after the other. 274 # - remaining bytes: the metadata, each (key, value) pair after the other.
275 _fm1version = 1 275 _fm1version = 1
276 _fm1fixed = '>IdhHBBB20s' 276 _fm1fixed = '>IdhHBBB20s'
277 _fm1nodesha1 = '20s' 277 _fm1nodesha1 = '20s'
278 _fm1nodesha256 = '32s' 278 _fm1nodesha256 = '32s'
279 _fm1nodesha1size = _calcsize(_fm1nodesha1)
280 _fm1nodesha256size = _calcsize(_fm1nodesha256)
279 _fm1fsize = _calcsize(_fm1fixed) 281 _fm1fsize = _calcsize(_fm1fixed)
280 _fm1parentnone = 3 282 _fm1parentnone = 3
281 _fm1parentshift = 14 283 _fm1parentshift = 14
282 _fm1parentmask = (_fm1parentnone << _fm1parentshift) 284 _fm1parentmask = (_fm1parentnone << _fm1parentshift)
283 _fm1metapair = 'BB' 285 _fm1metapair = 'BB'
296 if numpar == _fm1parentnone: 298 if numpar == _fm1parentnone:
297 numpar = None 299 numpar = None
298 # build the date tuple (upgrade tz minutes to seconds) 300 # build the date tuple (upgrade tz minutes to seconds)
299 date = (seconds, tz * 60) 301 date = (seconds, tz * 60)
300 _fm1node = _fm1nodesha1 302 _fm1node = _fm1nodesha1
303 fnodesize = _fm1nodesha1size
301 if flags & usingsha256: 304 if flags & usingsha256:
302 _fm1node = _fm1nodesha256 305 _fm1node = _fm1nodesha256
303 fnodesize = _calcsize(_fm1node) 306 fnodesize = _fm1nodesha256size
304 # read replacement 307 # read replacement
305 sucs = () 308 sucs = ()
306 if numsuc: 309 if numsuc:
307 s = (fnodesize * numsuc) 310 s = (fnodesize * numsuc)
308 cur = data[off:off + s] 311 cur = data[off:off + s]