From eff0c22e59e65b6b63e854ff41eb091278e05714 Mon Sep 17 00:00:00 2001
From: Julian Andres Klode <jak@debian.org>
Date: Thu, 7 Jan 2016 19:16:23 +0100
Subject: Switch performance critical code to use APT::StringView

This improves performance of the cache generation on my
ARM platform (4x Cortex A15) by about 10% to 20% from
2.35-2.50 to 2.1 seconds.
---
 apt-pkg/deb/deblistparser.h | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

(limited to 'apt-pkg/deb/deblistparser.h')

diff --git a/apt-pkg/deb/deblistparser.h b/apt-pkg/deb/deblistparser.h
index 42111c837..ad134f8e6 100644
--- a/apt-pkg/deb/deblistparser.h
+++ b/apt-pkg/deb/deblistparser.h
@@ -19,6 +19,9 @@
 
 #include <string>
 #include <vector>
+#ifdef APT_PKG_EXPOSE_STRING_VIEW
+#include <apt-pkg/string_view.h>
+#endif
 
 #ifndef APT_8_CLEANER_HEADERS
 #include <apt-pkg/indexfile.h>
@@ -50,7 +53,10 @@ class APT_HIDDEN debListParser : public pkgCacheListParser
    bool ParseDepends(pkgCache::VerIterator &Ver,const char *Tag,
 		     unsigned int Type);
    bool ParseProvides(pkgCache::VerIterator &Ver);
-   static bool GrabWord(std::string Word,const WordList *List,unsigned char &Out);
+
+#ifdef APT_PKG_EXPOSE_STRING_VIEW
+   APT_HIDDEN static bool GrabWord(APT::StringView Word,const WordList *List,unsigned char &Out);
+#endif
    APT_HIDDEN unsigned char ParseMultiArch(bool const showErrors);
 
    public:
@@ -64,6 +70,9 @@ class APT_HIDDEN debListParser : public pkgCacheListParser
    virtual std::string Version() APT_OVERRIDE;
    virtual bool NewVersion(pkgCache::VerIterator &Ver) APT_OVERRIDE;
    virtual std::string Description(std::string const &lang) APT_OVERRIDE;
+#ifdef APT_PKG_EXPOSE_STRING_VIEW
+   APT::StringView Description(APT::StringView lang);
+#endif
    virtual std::vector<std::string> AvailableDescriptionLanguages() APT_OVERRIDE;
    virtual MD5SumValue Description_md5() APT_OVERRIDE;
    virtual unsigned short VersionHash() APT_OVERRIDE;
@@ -91,6 +100,14 @@ class APT_HIDDEN debListParser : public pkgCacheListParser
 	 bool const &ParseArchFlags, bool const &StripMultiArch,
 	 bool const &ParseRestrictionsList);
 
+#ifdef APT_PKG_EXPOSE_STRING_VIEW
+   APT_HIDDEN static const char *ParseDepends(const char *Start,const char *Stop,
+	 APT::StringView &Package,
+    APT::StringView &Ver,unsigned int &Op,
+	 bool const ParseArchFlags = false, bool StripMultiArch = true,
+	 bool const ParseRestrictionsList = false);
+#endif
+
    APT_PUBLIC static const char *ConvertRelation(const char *I,unsigned int &Op);
 
    debListParser(FileFd *File);
-- 
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