From a65e22c64a9312dec90264b4059424dbe2290d7b Mon Sep 17 00:00:00 2001 From: David Kalnischkies Date: Tue, 12 Mar 2013 23:28:16 +0100 Subject: * apt-pkg/pkgcachegen.cc: - do not store the MD5Sum for every description language variant as it will be the same for all so it can be shared to save cache space --- apt-pkg/pkgcachegen.cc | 61 ++++++++++++++++++++++++++------------------------ debian/changelog | 3 +++ 2 files changed, 35 insertions(+), 29 deletions(-) diff --git a/apt-pkg/pkgcachegen.cc b/apt-pkg/pkgcachegen.cc index 373f6625..2f05310c 100644 --- a/apt-pkg/pkgcachegen.cc +++ b/apt-pkg/pkgcachegen.cc @@ -300,36 +300,35 @@ bool pkgCacheGenerator::MergeListPackage(ListParser &List, pkgCache::PkgIterator for (Ver = Pkg.VersionList(); Ver.end() == false; ++Ver) { - pkgCache::DescIterator Desc = Ver.DescriptionList(); + pkgCache::DescIterator VerDesc = Ver.DescriptionList(); // a version can only have one md5 describing it - if (Desc.end() == true || MD5SumValue(Desc.md5()) != CurMd5) + if (VerDesc.end() == true || MD5SumValue(VerDesc.md5()) != CurMd5) continue; // don't add a new description if we have one for the given // md5 && language - if (IsDuplicateDescription(Desc, CurMd5, CurLang) == true) + if (IsDuplicateDescription(VerDesc, CurMd5, CurLang) == true) continue; + pkgCache::DescIterator Desc; Dynamic DynDesc(Desc); - // we add at the end, so that the start is constant as we need - // that to be able to efficiently share these lists - map_ptrloc *LastDesc = &Ver->DescriptionList; - for (;Desc.end() == false && Desc->NextDesc != 0; ++Desc); - if (Desc.end() == false) - LastDesc = &Desc->NextDesc; - void const * const oldMap = Map.Data(); - map_ptrloc const descindex = NewDescription(Desc, CurLang, CurMd5, *LastDesc); + map_ptrloc const descindex = NewDescription(Desc, CurLang, CurMd5, VerDesc->md5sum); if (unlikely(descindex == 0 && _error->PendingError())) return _error->Error(_("Error occurred while processing %s (%s%d)"), Pkg.Name(), "NewDescription", 1); - if (oldMap != Map.Data()) - LastDesc += (map_ptrloc*) Map.Data() - (map_ptrloc*) oldMap; - *LastDesc = descindex; + Desc->ParentPkg = Pkg.Index(); - if ((*LastDesc == 0 && _error->PendingError()) || NewFileDesc(Desc,List) == false) + // we add at the end, so that the start is constant as we need + // that to be able to efficiently share these lists + VerDesc = Ver.DescriptionList(); // old value might be invalid after ReMap + for (;VerDesc.end() == false && VerDesc->NextDesc != 0; ++VerDesc); + map_ptrloc * const LastNextDesc = (VerDesc.end() == true) ? &Ver->DescriptionList : &VerDesc->NextDesc; + *LastNextDesc = descindex; + + if (NewFileDesc(Desc,List) == false) return _error->Error(_("Error occurred while processing %s (%s%d)"), Pkg.Name(), "NewFileDesc", 1); @@ -509,19 +508,16 @@ bool pkgCacheGenerator::MergeListVersion(ListParser &List, pkgCache::PkgIterator // We haven't found reusable descriptions, so add the first description pkgCache::DescIterator Desc = Ver.DescriptionList(); Dynamic DynDesc(Desc); - map_ptrloc *LastDesc = &Ver->DescriptionList; - oldMap = Map.Data(); - map_ptrloc const descindex = NewDescription(Desc, CurLang, CurMd5, *LastDesc); + map_ptrloc const descindex = NewDescription(Desc, CurLang, CurMd5, 0); if (unlikely(descindex == 0 && _error->PendingError())) return _error->Error(_("Error occurred while processing %s (%s%d)"), Pkg.Name(), "NewDescription", 2); - if (oldMap != Map.Data()) - LastDesc += (map_ptrloc*) Map.Data() - (map_ptrloc*) oldMap; - *LastDesc = descindex; + Desc->ParentPkg = Pkg.Index(); + Ver->DescriptionList = descindex; - if ((*LastDesc == 0 && _error->PendingError()) || NewFileDesc(Desc,List) == false) + if (NewFileDesc(Desc,List) == false) return _error->Error(_("Error occurred while processing %s (%s%d)"), Pkg.Name(), "NewFileDesc", 2); @@ -825,9 +821,9 @@ bool pkgCacheGenerator::NewFileDesc(pkgCache::DescIterator &Desc, // --------------------------------------------------------------------- /* This puts a description structure in the linked list */ map_ptrloc pkgCacheGenerator::NewDescription(pkgCache::DescIterator &Desc, - const string &Lang, - const MD5SumValue &md5sum, - map_ptrloc Next) + const string &Lang, + const MD5SumValue &md5sum, + map_ptrloc idxmd5str) { // Get a structure map_ptrloc const Description = AllocateInMap(sizeof(pkgCache::Description)); @@ -836,14 +832,21 @@ map_ptrloc pkgCacheGenerator::NewDescription(pkgCache::DescIterator &Desc, // Fill it in Desc = pkgCache::DescIterator(Cache,Cache.DescP + Description); - Desc->NextDesc = Next; Desc->ID = Cache.HeaderP->DescriptionCount++; map_ptrloc const idxlanguage_code = WriteStringInMap(Lang); - map_ptrloc const idxmd5sum = WriteStringInMap(md5sum.Value()); - if (unlikely(idxlanguage_code == 0 || idxmd5sum == 0)) + if (unlikely(idxlanguage_code == 0)) return 0; Desc->language_code = idxlanguage_code; - Desc->md5sum = idxmd5sum; + + if (idxmd5str != 0) + Desc->md5sum = idxmd5str; + else + { + map_ptrloc const idxmd5sum = WriteStringInMap(md5sum.Value()); + if (unlikely(idxmd5sum == 0)) + return 0; + Desc->md5sum = idxmd5sum; + } return Description; } diff --git a/debian/changelog b/debian/changelog index 067103c7..58cff682 100644 --- a/debian/changelog +++ b/debian/changelog @@ -2,6 +2,9 @@ apt (0.9.7.8~exp2+nmu1) UNRELEASED; urgency=low [ David Kalnischkies ] * various simple changes to fix cppcheck warnings + * apt-pkg/pkgcachegen.cc: + - do not store the MD5Sum for every description language variant as + it will be the same for all so it can be shared to save cache space -- David Kalnischkies Sun, 10 Mar 2013 12:23:24 +0100 -- cgit v1.2.3