Mercurial > hg
view tests/remotefilelog-getflogheads.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> |
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date | Wed, 01 Mar 2023 02:38:20 +0100 |
parents | 6000f5b25c9b |
children | a804242050c4 |
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from mercurial.i18n import _ from mercurial import ( hg, registrar, ) from mercurial.utils import ( urlutil, ) cmdtable = {} command = registrar.command(cmdtable) @command(b'getflogheads', [], b'path') def getflogheads(ui, repo, path): """ Extension printing a remotefilelog's heads Used for testing purpose """ dest = urlutil.get_unique_pull_path(b'getflogheads', repo, ui)[0] peer = hg.peer(repo, {}, dest) try: flogheads = peer.x_rfl_getflogheads(path) finally: peer.close() if flogheads: for head in flogheads: ui.write(head + b'\n') else: ui.write(_(b'EMPTY\n'))