Mercurial > hg
view tests/test-subrepo-paths.t @ 31467:08ecec297521
bdiff: use Python memory allocator in fixws
Python has its own memory allocation APIs. For allocations
<= 512 bytes, it allocates memory from arenas. This means that
average small allocations don't call the system allocator, which
makes them faster. Also, arena allocations cut down on memory
fragmentation, which can matter for performance in long-running
processes.
Another advantage of using the Python memory allocator is that
allocations are tracked by Python. This is a bigger deal in
Python 3, as modern versions of Python have some decent built-in
tools for examining memory usage, leaks, etc.
This patch converts a trivial malloc() + free() in the bdiff code
to use the Python allocator APIs. Since the object being
operated on is a line, chances are it will use an arena. So,
this could have a net positive impact on performance (although
I didn't measure it).
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Thu, 09 Mar 2017 11:54:25 -0800 |
parents | ee07f9d142c9 |
children | 4441705b7111 |
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$ hg init outer $ cd outer $ echo '[paths]' >> .hg/hgrc $ echo 'default = http://example.net/' >> .hg/hgrc hg debugsub with no remapping $ echo 'sub = libfoo' > .hgsub $ hg add .hgsub $ hg debugsub path sub source libfoo revision hg debugsub with remapping $ echo '[subpaths]' >> .hg/hgrc $ printf 'http://example.net/lib(.*) = C:\\libs\\\\1-lib\\\n' >> .hg/hgrc $ hg debugsub path sub source C:\libs\foo-lib\ revision test cumulative remapping, the $HGRCPATH file is loaded first $ echo '[subpaths]' >> $HGRCPATH $ echo 'libfoo = libbar' >> $HGRCPATH $ hg debugsub path sub source C:\libs\bar-lib\ revision test absolute source path -- testing with a URL is important since standard os.path.join wont treat that as an absolute path $ echo 'abs = http://example.net/abs' > .hgsub $ hg debugsub path abs source http://example.net/abs revision $ echo 'abs = /abs' > .hgsub $ hg debugsub path abs source /abs revision test bad subpaths pattern $ cat > .hg/hgrc <<EOF > [subpaths] > .* = \1 > EOF $ hg debugsub abort: bad subrepository pattern in $TESTTMP/outer/.hg/hgrc:2: invalid group reference (glob) [255] $ cd ..