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revset: speed up '_matchfiles'...

revset: speed up '_matchfiles' File matching is done by applying the matcher to all elements in the 'file' field of all changesets in the repository. This requires to read/parse all changesets in the repository and do a lot of matching. However about 1/3 of the time of the function is used to create 'changectx' object and retrieve their 'file' field. This is far too much overhead so we are skipping the changectx layer and directly access the data from the changelog. This provide use significant speed up: repository: mozilla central 252524 revisions command: hg perfrevset '_matchfiles("p:browser")' Before: 15.899687s After: 10.011705s Slowdown is even more significant if you have a lot of namespace that slowdown lookup. The time is now spent with this approximate repartition: Matcher: 20% regexp matching: 10% changelog.read: 80% reading revision: 60% checking hash: 15% decompression: 15% reading chunk: 30% changelog parsing: 20% decoding to local: 10% The next easy win is probably to have more of the changelog stack implemented using the CPython api.

Matt Mackall - - Load All Authors

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             map-cmdline.xml
        
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                | application/xml
            
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                XmlLexer
            
             / mercurial / templates / map-cmdline.xml
          
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        Matt Mackall
    
templater: add new docheader/footer components for XML (issue4135)...

              r26222
            
      docheader = '<?xml version="1.0"?>\n<log>\n'

      docfooter = '</log>\n'

        Robert Bachmann
    
Added XML output for hg log...

              r10153
            
        David Soria Parra
    
templates: add bookmarks to command line styles

              r13387
            
      changeset = '<logentry revision="{rev}" node="{node}">\n{branches}{bookmarks}{tags}{parents}<author email="{author|email|xmlescape}">{author|person|xmlescape}</author>\n<date>{date|rfc3339date}</date>\n<msg xml:space="preserve">{desc|xmlescape}</msg>\n</logentry>\n'

      changeset_verbose = '<logentry revision="{rev}" node="{node}">\n{branches}{bookmarks}{tags}{parents}<author email="{author|email|xmlescape}">{author|person|xmlescape}</author>\n<date>{date|rfc3339date}</date>\n<msg xml:space="preserve">{desc|xmlescape}</msg>\n<paths>\n{file_adds}{file_dels}{file_mods}</paths>\n{file_copies}</logentry>\n'

      changeset_debug = '<logentry revision="{rev}" node="{node}">\n{branches}{bookmarks}{tags}{parents}<author email="{author|email|xmlescape}">{author|person|xmlescape}</author>\n<date>{date|rfc3339date}</date>\n<msg xml:space="preserve">{desc|xmlescape}</msg>\n<paths>\n{file_adds}{file_dels}{file_mods}</paths>\n{file_copies}{extras}</logentry>\n'

        Robert Bachmann
    
Added XML output for hg log...

              r10153
            
      file_add  = '<path action="A">{file_add|xmlescape}</path>\n'

      file_mod  = '<path action="M">{file_mod|xmlescape}</path>\n'

      file_del  = '<path action="R">{file_del|xmlescape}</path>\n'

      start_file_copies = '<copies>\n'

      file_copy = '<copy source="{source|xmlescape}">{name|xmlescape}</copy>\n'

      end_file_copies = '</copies>\n'

      parent = '<parent revision="{rev}" node="{node}" />\n'

      branch = '<branch>{branch|xmlescape}</branch>\n'

      tag = '<tag>{tag|xmlescape}</tag>\n'

        David Soria Parra
    
templates: add bookmarks to command line styles

              r13387
            
      bookmark = '<bookmark>{bookmark|xmlescape}</bookmark>\n'

        Robert Bachmann
    
Added output of "extras" to hg log XML output

              r10159
            
      extra = '<extra key="{key|xmlescape}">{value|xmlescape}</extra>\n'

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Matt Mackall templater: add new docheader/footer components for XML (issue4135)...	r26222	docheader = '<?xml version="1.0"?>\n<log>\n'
		docfooter = '</log>\n'
Robert Bachmann Added XML output for hg log...	r10153
David Soria Parra templates: add bookmarks to command line styles	r13387	changeset = '<logentry revision="{rev}" node="{node}">\n{branches}{bookmarks}{tags}{parents}<author email="{author\|email\|xmlescape}">{author\|person\|xmlescape}</author>\n<date>{date\|rfc3339date}</date>\n<msg xml:space="preserve">{desc\|xmlescape}</msg>\n</logentry>\n'
		changeset_verbose = '<logentry revision="{rev}" node="{node}">\n{branches}{bookmarks}{tags}{parents}<author email="{author\|email\|xmlescape}">{author\|person\|xmlescape}</author>\n<date>{date\|rfc3339date}</date>\n<msg xml:space="preserve">{desc\|xmlescape}</msg>\n<paths>\n{file_adds}{file_dels}{file_mods}</paths>\n{file_copies}</logentry>\n'
		changeset_debug = '<logentry revision="{rev}" node="{node}">\n{branches}{bookmarks}{tags}{parents}<author email="{author\|email\|xmlescape}">{author\|person\|xmlescape}</author>\n<date>{date\|rfc3339date}</date>\n<msg xml:space="preserve">{desc\|xmlescape}</msg>\n<paths>\n{file_adds}{file_dels}{file_mods}</paths>\n{file_copies}{extras}</logentry>\n'
Robert Bachmann Added XML output for hg log...	r10153
		file_add = '<path action="A">{file_add\|xmlescape}</path>\n'
		file_mod = '<path action="M">{file_mod\|xmlescape}</path>\n'
		file_del = '<path action="R">{file_del\|xmlescape}</path>\n'

		start_file_copies = '<copies>\n'
		file_copy = '<copy source="{source\|xmlescape}">{name\|xmlescape}</copy>\n'
		end_file_copies = '</copies>\n'

		parent = '<parent revision="{rev}" node="{node}" />\n'
		branch = '<branch>{branch\|xmlescape}</branch>\n'
		tag = '<tag>{tag\|xmlescape}</tag>\n'
David Soria Parra templates: add bookmarks to command line styles	r13387	bookmark = '<bookmark>{bookmark\|xmlescape}</bookmark>\n'
Robert Bachmann Added output of "extras" to hg log XML output	r10159	extra = '<extra key="{key\|xmlescape}">{value\|xmlescape}</extra>\n'