upstream/mercurial-mirror Files · mercurial/thirdparty/xdiff/xinclude.h

rev-branch-cache: reenable memory mapping of the revision data...

rev-branch-cache: reenable memory mapping of the revision data Now that we are no longer truncating it, we can mmap it again. This provide a sizeable speedup on repository with a very large amount of revision for example for a mozilla-try clone with 5 793 383 revisions, this provide a speedup of 5ms - 10ms. Since they happens within the "critical" locked path during push. These miliseconds are important. In addition, the v3 branchmap format is use the rev-branch-cache more than the v2 branchmap cache so this will be important. On smaller repository we consistently see an improvement of one or two percents, but the gain in absolute time is usually < 10 ms. #### benchmark.name = hg.command.unbundle # benchmark.variants.issue6528 = disabled # benchmark.variants.reuse-external-delta-parent = yes # benchmark.variants.revs = any-1-extra-rev # benchmark.variants.source = unbundle # benchmark.variants.verbosity = quiet ### data-env-vars.name = mozilla-try-2024-03-26-zstd-sparse-revlog ## bin-env-vars.hg.flavor = default e51161b12c7e: 3.527923 ebdcfe85b070: 3.468178 (-1.69%, -0.06) ## bin-env-vars.hg.flavor = rust e51161b12c7e: 3.580158 ebdcfe85b070: 3.480564 (-2.78%, -0.10) ### data-env-vars.name = mozilla-try-2024-03-26-ds2-pnm ## bin-env-vars.hg.flavor = rust e51161b12c7e: 3.527923 ebdcfe85b070: 3.468178 (-1.69%, -0.06)

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      /*

       *  LibXDiff by Davide Libenzi ( File Differential Library )

       *  Copyright (C) 2003  Davide Libenzi

       *

       *  This library is free software; you can redistribute it and/or

       *  modify it under the terms of the GNU Lesser General Public

       *  License as published by the Free Software Foundation; either

       *  version 2.1 of the License, or (at your option) any later version.

       *

       *  This library is distributed in the hope that it will be useful,

       *  but WITHOUT ANY WARRANTY; without even the implied warranty of

       *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

       *  Lesser General Public License for more details.

       *

       *  You should have received a copy of the GNU Lesser General Public

       *  License along with this library; if not, see

       *  <http://www.gnu.org/licenses/>.

       *

       *  Davide Libenzi <davidel@xmailserver.org>

       *

       */

      #if !defined(XINCLUDE_H)

      #define XINCLUDE_H

      #include <ctype.h>

      #include <stdio.h>

      #include <stdlib.h>

      #include <string.h>

      #include <limits.h>

      #include "xmacros.h"

      #include "xdiff.h"

      #include "xtypes.h"

      #include "xutils.h"

      #include "xprepare.h"

      #include "xdiffi.h"

      #endif /* #if !defined(XINCLUDE_H) */

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				/*
				* LibXDiff by Davide Libenzi ( File Differential Library )
				* Copyright (C) 2003 Davide Libenzi
				*
				* This library is free software; you can redistribute it and/or
				* modify it under the terms of the GNU Lesser General Public
				* License as published by the Free Software Foundation; either
				* version 2.1 of the License, or (at your option) any later version.
				*
				* This library is distributed in the hope that it will be useful,
				* but WITHOUT ANY WARRANTY; without even the implied warranty of
				* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
				* Lesser General Public License for more details.
				*
				* You should have received a copy of the GNU Lesser General Public
				* License along with this library; if not, see
				* <http://www.gnu.org/licenses/>.
				*
				* Davide Libenzi <davidel@xmailserver.org>
				*
				*/

				#if !defined(XINCLUDE_H)
				#define XINCLUDE_H

				#include <ctype.h>
				#include <stdio.h>
				#include <stdlib.h>
				#include <string.h>
				#include <limits.h>

				#include "xmacros.h"
				#include "xdiff.h"
				#include "xtypes.h"
				#include "xutils.h"
				#include "xprepare.h"
				#include "xdiffi.h"


				#endif /* #if !defined(XINCLUDE_H) */