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d3b0f0cdfb
sapling/lib
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Jun Wu d3b0f0cdfb indexedlog: add RAII file lock 
Summary:
Add ScopedFileLock. This is similar to Python's contextmanager.
It's easier to use than the fs2 raw API, since it guarantees the file is
unlocked.

Reviewed By: jsgf

Differential Revision: D7203684

fbshipit-source-id: 5d7beed99ff992466ab7bf1fbea0353de4dfe4f9
2018-04-13 21:51:25 -07:00
..
cdatapack hg: some portability fixes to py-cdatapack.h 2018-04-13 21:51:24 -07:00
clib hg: start using imported mman-win32 in the portability headers 2018-04-13 21:51:10 -07:00
indexedlog indexedlog: add RAII file lock 2018-04-13 21:51:25 -07:00
linelog hg: basic support for building hg using buck 2018-04-13 21:50:58 -07:00
radixbuf radixbuf: avoid using unstable features in buck build 2018-04-13 21:51:12 -07:00
third-party fixing xdiff build on windows 2018-04-13 21:51:23 -07:00
vlqencoding vlqencoding: add read_vlq_at API that works for AsRef<[u8]> 2018-04-13 21:51:19 -07:00
README.md READMEs: tweaks based on feedback 2018-01-12 12:35:52 -08:00

README.md

lib

Any native code (C/C++/Rust) that Mercurial (either core or extensions) depends on should go here. Python code, or native code that depends on Python code (e.g. #include <Python.h> or use cpython) is disallowed.

As we start to convert more of Mercurial into Rust, and write new paths entrirely in native code, we'll want to limit our dependency on Python, which is why this barrier exists.

See also hgext/extlib/README.md, mercurial/cext/README.mb.

How do I choose between lib and extlib (and cext)?

If your code is native and doesn't depend on Python (awesome!), it goes here.

Otherwise, put it in hgext/extlib (if it's only used by extensions) or mercurial/cext (if it's used by extensions or core).