upstream/mercurial-mirror Files · contrib/fuzz/revlog_corpus.py

rust: Preallocate the returned `Vec` in `utils::files::relativize_path`...

rust: Preallocate the returned `Vec` in `utils::files::relativize_path` Profiling `rhg files > /dev/null` on an old snapshot of mozilla-central (with `perf` and the Firefox Profiler: https://github.com/firefox-devtools/profiler/blob/main/docs-user/guide-perf-profiling.md) showed non-trivial time spend in this function and in `realloc`. This change makes the wall-clock time for that process on my machine go from ~190 ms to ~150 ms. Differential Revision: https://phab.mercurial-scm.org/D10199

Kyle Lippincott - - Load All Authors

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             revlog_corpus.py
        
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      from __future__ import absolute_import

      import argparse

      import os

      import zipfile

      ap = argparse.ArgumentParser()

      ap.add_argument("out", metavar="some.zip", type=str, nargs=1)

      args = ap.parse_args()

      reporoot = os.path.normpath(os.path.join(os.path.dirname(__file__), '..', '..'))

      # typically a standalone index

      changelog = os.path.join(reporoot, '.hg', 'store', '00changelog.i')

      # an inline revlog with only a few revisions

      contributing = os.path.join(

          reporoot, '.hg', 'store', 'data', 'contrib', 'fuzz', 'mpatch.cc.i'

      )

      with zipfile.ZipFile(args.out[0], "w", zipfile.ZIP_STORED) as zf:

          if os.path.exists(changelog):

              with open(changelog, 'rb') as f:

                  zf.writestr("00changelog.i", f.read())

          if os.path.exists(contributing):

              with open(contributing, 'rb') as f:

                  zf.writestr("contributing.i", f.read())

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				from __future__ import absolute_import

				import argparse
				import os
				import zipfile

				ap = argparse.ArgumentParser()
				ap.add_argument("out", metavar="some.zip", type=str, nargs=1)
				args = ap.parse_args()

				reporoot = os.path.normpath(os.path.join(os.path.dirname(__file__), '..', '..'))
				# typically a standalone index
				changelog = os.path.join(reporoot, '.hg', 'store', '00changelog.i')
				# an inline revlog with only a few revisions
				contributing = os.path.join(
				reporoot, '.hg', 'store', 'data', 'contrib', 'fuzz', 'mpatch.cc.i'
				)

				with zipfile.ZipFile(args.out[0], "w", zipfile.ZIP_STORED) as zf:
				if os.path.exists(changelog):
				with open(changelog, 'rb') as f:
				zf.writestr("00changelog.i", f.read())
				if os.path.exists(contributing):
				with open(contributing, 'rb') as f:
				zf.writestr("contributing.i", f.read())