Mercurial > public > mercurial-scm > hg-stable
comparison mercurial/revlog.py @ 44351:5962fd0d1045
nodemap: write nodemap data on disk
Let us start writing data on disk (so that we can read it from there later).
This series of changeset is going to focus first on having data on disk and
updating it.
Right now the data is written right next to the revlog data, in the store. We
might move it to cache (with proper cache validation mechanism) later, but for
now revlog have a storevfs instance and it is simpler to us it. The right
location for this data is not the focus of this series.
Differential Revision: https://phab.mercurial-scm.org/D7835
| author | Pierre-Yves David <pierre-yves.david@octobus.net> |
|---|---|
| date | Wed, 15 Jan 2020 15:47:21 +0100 |
| parents | b9e174d4ed11 |
| children | daad3aace942 |
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| 44350:c577bb4a04d4 | 44351:5962fd0d1045 |
|---|---|
| 405 datafile=None, | 405 datafile=None, |
| 406 checkambig=False, | 406 checkambig=False, |
| 407 mmaplargeindex=False, | 407 mmaplargeindex=False, |
| 408 censorable=False, | 408 censorable=False, |
| 409 upperboundcomp=None, | 409 upperboundcomp=None, |
| 410 persistentnodemap=False, | |
| 410 ): | 411 ): |
| 411 """ | 412 """ |
| 412 create a revlog object | 413 create a revlog object |
| 413 | 414 |
| 414 opener is a function that abstracts the file opening operation | 415 opener is a function that abstracts the file opening operation |
| 416 | 417 |
| 417 """ | 418 """ |
| 418 self.upperboundcomp = upperboundcomp | 419 self.upperboundcomp = upperboundcomp |
| 419 self.indexfile = indexfile | 420 self.indexfile = indexfile |
| 420 self.datafile = datafile or (indexfile[:-2] + b".d") | 421 self.datafile = datafile or (indexfile[:-2] + b".d") |
| 422 self.nodemap_file = None | |
| 423 if persistentnodemap: | |
| 424 self.nodemap_file = indexfile[:-2] + b".n" | |
| 425 | |
| 421 self.opener = opener | 426 self.opener = opener |
| 422 # When True, indexfile is opened with checkambig=True at writing, to | 427 # When True, indexfile is opened with checkambig=True at writing, to |
| 423 # avoid file stat ambiguity. | 428 # avoid file stat ambiguity. |
| 424 self._checkambig = checkambig | 429 self._checkambig = checkambig |
| 425 self._mmaplargeindex = mmaplargeindex | 430 self._mmaplargeindex = mmaplargeindex |
| 2284 transaction.add(self.indexfile, offset, curr) | 2289 transaction.add(self.indexfile, offset, curr) |
| 2285 ifh.write(entry) | 2290 ifh.write(entry) |
| 2286 ifh.write(data[0]) | 2291 ifh.write(data[0]) |
| 2287 ifh.write(data[1]) | 2292 ifh.write(data[1]) |
| 2288 self._enforceinlinesize(transaction, ifh) | 2293 self._enforceinlinesize(transaction, ifh) |
| 2294 nodemaputil.setup_persistent_nodemap(transaction, self) | |
| 2289 | 2295 |
| 2290 def addgroup(self, deltas, linkmapper, transaction, addrevisioncb=None): | 2296 def addgroup(self, deltas, linkmapper, transaction, addrevisioncb=None): |
| 2291 """ | 2297 """ |
| 2292 add a delta group | 2298 add a delta group |
| 2293 | 2299 |