upstream/mercurial-mirror Files · mercurial/stack.py

phases: avoid N² behavior in `advanceboundary`...

phases: avoid N² behavior in `advanceboundary` We allowed duplicated entries in the deque, which each entry could potentially insert all its ancestors. So advancing boundary for the full repository would mean each revision would walk all its ancestors, resulting in O(N²) iteration. For repository of any decent size, N² is quickly insane. We introduce a simple set to avoid this and get back to reasonable performance.

Gregory Szorc - - Load All Authors

File last commit:

r49730:6000f5b2 default


                r52783:c9ceb4f6

6.7 stable

Download file

             stack.py
        
                    22 lines
            
             | 722 B
            
                | text/x-python
            
             |
                PythonLexer
            
             / mercurial / stack.py
          
                    History
                
                 |
                  Annotation
                 | Raw
                 |Copy content
                 |Copy permalink

      # stack.py - Mercurial functions for stack definition

      #

      #  Copyright Olivia Mackall <olivia@selenic.com> and other

      #

      # This software may be used and distributed according to the terms of the

      # GNU General Public License version 2 or any later version.

      def getstack(repo, rev=None):

          """return a sorted smartrev of the stack containing either rev if it is

          not None or the current working directory parent.

          The stack will always contain all drafts changesets which are ancestors to

          the revision and are not merges.

          """

          if rev is None:

              rev = b'.'

          revspec = b'only(%s) and not public() and not ::merge()'

          revisions = repo.revs(revspec, rev)

          revisions.sort()

          return revisions

	Site-wide shortcuts
/	Use quick search box
g h	Goto home page
g g	Goto my private gists page
g G	Goto my public gists page
g 0-9	Goto bookmarked items from 0-9
n r	New repository page
n g	New gist page

	Repositories
g s	Goto summary page
g c	Goto changelog page
g f	Goto files page
g F	Goto files page with file search activated
g p	Goto pull requests page
g o	Goto repository settings
g O	Goto repository access permissions settings
t s	Toggle sidebar on some pages

				# stack.py - Mercurial functions for stack definition
				#
				# Copyright Olivia Mackall <olivia@selenic.com> and other
				#
				# This software may be used and distributed according to the terms of the
				# GNU General Public License version 2 or any later version.


				def getstack(repo, rev=None):
				"""return a sorted smartrev of the stack containing either rev if it is
				not None or the current working directory parent.

				The stack will always contain all drafts changesets which are ancestors to
				the revision and are not merges.
				"""
				if rev is None:
				rev = b'.'

				revspec = b'only(%s) and not public() and not ::merge()'
				revisions = repo.revs(revspec, rev)
				revisions.sort()
				return revisions