mercurial: Changelog

dirstate-tree: Fix status algorithm with unreadable directory When reading a directory fails such as because of insufficient permissions, it should be treated as empty by status instead of skipped entirely. Differential Revision: https://phab.mercurial-scm.org/D10823

docket: make compatible with py3.6, where Struct.format is bytes Differential Revision: https://phab.mercurial-scm.org/D10770

packaging: disable rust extensions again on CentOS Backed out changeset eccbfa7e19c0 We're seeing (very rarely) crashes of 'hg purge' on some of our machines (see https://bz.mercurial-scm.org/show_bug.cgi?id=6509 ). Unfortunately, I haven't been able to find out much more about what is going wrong. To avoid further impact on our users and CI, I would prefer to disable the rust extensions for now. Differential Revision: https://phab.mercurial-scm.org/D10877

cext: fix memory leak in phases computation Without this a buffer whose size in bytes is the number of changesets in the repository is leaked each time the repository is opened and changeset phases are computed. Impact: the current code in hgwebdir creates a new `localrepository` instance for each HTTP request. Since any pull or push is made of several requests, a team of 100 people can easily produce thousands of such requests per day. Being a low-level malloc, this leak can't be seen with the gc module and tools relying on that, but was spotted by valgrind immediately. Reproduction ------------ for i in range(cl_args.iterations): repo = hg.repository(baseui, repo_path) rev = repo.revs(rev).first() ctx = repo[rev] del ctx del repo # avoid any pollution by other type of leak # (that should be fixed in 5.8) repoview._filteredrepotypes.clear() gc.collect() Measurements ------------ Resident Set Size (RSS), taken on a clone of mozilla-central for performance analysis (440 000 changesets). before: 5.8+hg19.5ac0f2a8ba72 1000 iterations: 1606MB 5.8+hg19.5ac0f2a8ba72 10000 iterations: 5723MB after: 5.8+hg20.e2084d39e145 1000 iterations: 555MB 5.8+hg20.e2084d39e145 10000 iterations: 555MB (double checked, not a copy/paste error) (e2084d39e14 is the present changeset, before amendment of the message to add the measurements)

revlogv2: make sure bundling pick a compatible bundle format Before this change, revlog-v2 repository where bundled using the incompatible "v1" format. Differential Revision: https://phab.mercurial-scm.org/D10802

censor: do not process sidedata of censored revision while bundling The revision is censored, we should ignore it. Differential Revision: https://phab.mercurial-scm.org/D10801

changegroup: fix deltachunk API to be consistent from one class to another Depending of the subclass the 8th index of `chunkdata` items was either a sidedata dict of a proto_flags integer. We have not fixed the inconsistency and we already return fixed "delta" items from `deltaiter`. Differential Revision: https://phab.mercurial-scm.org/D10778

fuzz: add hg to sys.path when constructing mpatch corpus Differential Revision: https://phab.mercurial-scm.org/D10777

dirstate-tree: Skip readdir() in `hg status -mard` When running the status algorithm in a mode where we don’t list unknown or ignored files, all we care about are files that are listed in the dirstate. We can there for skip making expensive calls to readdir() to list the contents of filesystem directories, and instead only run stat() to get the filesystem state of files listed in the dirstate. (This state may be an error for files that don’t exist anymore on the filesystem.) On 16 CPU threads, this reduces the time spent in the `status()` function for `hg status -mard` on an old snapshot of mozilla-central from ~70ms to ~50ms. Differential Revision: https://phab.mercurial-scm.org/D10752