Mercurial > hg
view tests/test-propertycache.py @ 50242:379a78001d8e stable
dirstate: set identity whenever we read the dirstate's v2 docket
The docket can be loaded outside of a full read (for exemple when
pre-fetching parents), so the current code would read/set the identity
after loading the data, opening a race condition:
A0: first process docket is read
B0: other process appends new data to the dirstate (and changes the docket)
A1: first process sets the identity (based on pre-B content, but with post-B identity)
A1: first process loads the dirstatemap from the data file
A1: first process does not detect the race and overwrites the update from B.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Wed, 01 Mar 2023 02:38:20 +0100 |
parents | 6000f5b25c9b |
children |
line wrap: on
line source
"""test behavior of propertycache and unfiltered propertycache The repoview overlay is quite complex. We test the behavior of property cache of both localrepo and repoview to prevent regression.""" import os import subprocess from mercurial import ( hg, localrepo, pycompat, ui as uimod, util, ) from mercurial.utils import procutil # create some special property cache that trace they call calllog = [] @util.propertycache def testcachedfoobar(repo): name = repo.filtername if name is None: name = '' val = len(name) calllog.append(val) return val unficalllog = [] @localrepo.unfilteredpropertycache def testcachedunfifoobar(repo): name = repo.filtername if name is None: name = '' val = 100 + len(name) unficalllog.append(val) return val # plug them on repo localrepo.localrepository.testcachedfoobar = testcachedfoobar localrepo.localrepository.testcachedunfifoobar = testcachedunfifoobar # Create an empty repo and instantiate it. It is important to run # these tests on the real object to detect regression. repopath = pycompat.fsencode(os.path.join(os.environ['TESTTMP'], 'repo')) assert ( subprocess.call( pycompat.rapply(procutil.tonativestr, [b'hg', b'init', repopath]) ) == 0 ) ui = uimod.ui.load() repo = hg.repository(ui, path=repopath).unfiltered() print('') print('=== property cache ===') print('') print('calllog:', calllog) print( 'cached value (unfiltered):', vars(repo).get('testcachedfoobar', 'NOCACHE') ) print('') print('= first access on unfiltered, should do a call') print('access:', repo.testcachedfoobar) print('calllog:', calllog) print( 'cached value (unfiltered):', vars(repo).get('testcachedfoobar', 'NOCACHE') ) print('') print('= second access on unfiltered, should not do call') print('access', repo.testcachedfoobar) print('calllog:', calllog) print( 'cached value (unfiltered):', vars(repo).get('testcachedfoobar', 'NOCACHE') ) print('') print('= first access on "visible" view, should do a call') visibleview = repo.filtered('visible') print( 'cached value ("visible" view):', vars(visibleview).get('testcachedfoobar', 'NOCACHE'), ) print('access:', visibleview.testcachedfoobar) print('calllog:', calllog) print( 'cached value (unfiltered):', vars(repo).get('testcachedfoobar', 'NOCACHE') ) print( 'cached value ("visible" view):', vars(visibleview).get('testcachedfoobar', 'NOCACHE'), ) print('') print('= second access on "visible view", should not do call') print('access:', visibleview.testcachedfoobar) print('calllog:', calllog) print( 'cached value (unfiltered):', vars(repo).get('testcachedfoobar', 'NOCACHE') ) print( 'cached value ("visible" view):', vars(visibleview).get('testcachedfoobar', 'NOCACHE'), ) print('') print('= no effect on other view') immutableview = repo.filtered('immutable') print( 'cached value ("immutable" view):', vars(immutableview).get('testcachedfoobar', 'NOCACHE'), ) print('access:', immutableview.testcachedfoobar) print('calllog:', calllog) print( 'cached value (unfiltered):', vars(repo).get('testcachedfoobar', 'NOCACHE') ) print( 'cached value ("visible" view):', vars(visibleview).get('testcachedfoobar', 'NOCACHE'), ) print( 'cached value ("immutable" view):', vars(immutableview).get('testcachedfoobar', 'NOCACHE'), ) # unfiltered property cache test print('') print('') print('=== unfiltered property cache ===') print('') print('unficalllog:', unficalllog) print( 'cached value (unfiltered): ', vars(repo).get('testcachedunfifoobar', 'NOCACHE'), ) print( 'cached value ("visible" view): ', vars(visibleview).get('testcachedunfifoobar', 'NOCACHE'), ) print( 'cached value ("immutable" view):', vars(immutableview).get('testcachedunfifoobar', 'NOCACHE'), ) print('') print('= first access on unfiltered, should do a call') print('access (unfiltered):', repo.testcachedunfifoobar) print('unficalllog:', unficalllog) print( 'cached value (unfiltered): ', vars(repo).get('testcachedunfifoobar', 'NOCACHE'), ) print('') print('= second access on unfiltered, should not do call') print('access (unfiltered):', repo.testcachedunfifoobar) print('unficalllog:', unficalllog) print( 'cached value (unfiltered): ', vars(repo).get('testcachedunfifoobar', 'NOCACHE'), ) print('') print('= access on view should use the unfiltered cache') print('access (unfiltered): ', repo.testcachedunfifoobar) print('access ("visible" view): ', visibleview.testcachedunfifoobar) print('access ("immutable" view):', immutableview.testcachedunfifoobar) print('unficalllog:', unficalllog) print( 'cached value (unfiltered): ', vars(repo).get('testcachedunfifoobar', 'NOCACHE'), ) print( 'cached value ("visible" view): ', vars(visibleview).get('testcachedunfifoobar', 'NOCACHE'), ) print( 'cached value ("immutable" view):', vars(immutableview).get('testcachedunfifoobar', 'NOCACHE'), ) print('') print('= even if we clear the unfiltered cache') del repo.__dict__['testcachedunfifoobar'] print( 'cached value (unfiltered): ', vars(repo).get('testcachedunfifoobar', 'NOCACHE'), ) print( 'cached value ("visible" view): ', vars(visibleview).get('testcachedunfifoobar', 'NOCACHE'), ) print( 'cached value ("immutable" view):', vars(immutableview).get('testcachedunfifoobar', 'NOCACHE'), ) print('unficalllog:', unficalllog) print('access ("visible" view): ', visibleview.testcachedunfifoobar) print('unficalllog:', unficalllog) print( 'cached value (unfiltered): ', vars(repo).get('testcachedunfifoobar', 'NOCACHE'), ) print( 'cached value ("visible" view): ', vars(visibleview).get('testcachedunfifoobar', 'NOCACHE'), ) print( 'cached value ("immutable" view):', vars(immutableview).get('testcachedunfifoobar', 'NOCACHE'), ) print('access ("immutable" view):', immutableview.testcachedunfifoobar) print('unficalllog:', unficalllog) print( 'cached value (unfiltered): ', vars(repo).get('testcachedunfifoobar', 'NOCACHE'), ) print( 'cached value ("visible" view): ', vars(visibleview).get('testcachedunfifoobar', 'NOCACHE'), ) print( 'cached value ("immutable" view):', vars(immutableview).get('testcachedunfifoobar', 'NOCACHE'), ) print('access (unfiltered): ', repo.testcachedunfifoobar) print('unficalllog:', unficalllog) print( 'cached value (unfiltered): ', vars(repo).get('testcachedunfifoobar', 'NOCACHE'), ) print( 'cached value ("visible" view): ', vars(visibleview).get('testcachedunfifoobar', 'NOCACHE'), ) print( 'cached value ("immutable" view):', vars(immutableview).get('testcachedunfifoobar', 'NOCACHE'), )