X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/3b5421b4c75f5c85b48cbb61bf22642ff52a6352..bebdca4bf63ae661c60bc1e0f4e03e6bbb7a7cc5:/apt-pkg/pkgcachegen.cc diff --git a/apt-pkg/pkgcachegen.cc b/apt-pkg/pkgcachegen.cc index f41ee4925..ee65c94d1 100644 --- a/apt-pkg/pkgcachegen.cc +++ b/apt-pkg/pkgcachegen.cc @@ -1,6 +1,6 @@ // -*- mode: cpp; mode: fold -*- // Description /*{{{*/ -// $Id: pkgcachegen.cc,v 1.20 1998/10/20 02:39:21 jgg Exp $ +// $Id: pkgcachegen.cc,v 1.35 1999/04/18 06:36:36 jgg Exp $ /* ###################################################################### Package Cache Generator - Generator for the cache structure. @@ -21,8 +21,8 @@ #include #include #include - -#include +#include +#include #include #include @@ -45,6 +45,7 @@ pkgCacheGenerator::pkgCacheGenerator(DynamicMMap &Map,OpProgress &Prog) : Cache.HeaderP->Dirty = true; Map.Sync(0,sizeof(pkgCache::Header)); Map.UsePools(*Cache.HeaderP->Pools,sizeof(Cache.HeaderP->Pools)/sizeof(Cache.HeaderP->Pools[0])); + memset(UniqHash,0,sizeof(UniqHash)); } /*}}}*/ // CacheGenerator::~pkgCacheGenerator - Destructor /*{{{*/ @@ -70,11 +71,14 @@ bool pkgCacheGenerator::MergeList(ListParser &List) { List.Owner = this; - int Counter = 0; + unsigned int Counter = 0; while (List.Step() == true) { // Get a pointer to the package structure string PackageName = List.Package(); + if (PackageName.empty() == true) + return false; + pkgCache::PkgIterator Pkg; if (NewPackage(Pkg,PackageName) == false) return _error->Error("Error occured while processing %s (NewPackage)",PackageName.c_str()); @@ -94,7 +98,7 @@ bool pkgCacheGenerator::MergeList(ListParser &List) } pkgCache::VerIterator Ver = Pkg.VersionList(); - unsigned long *Last = &Pkg->VersionList; + __apt_ptrloc *Last = &Pkg->VersionList; int Res = 1; for (; Ver.end() == false; Last = &Ver->NextVer, Ver++) { @@ -176,12 +180,20 @@ bool pkgCacheGenerator::NewFileVer(pkgCache::VerIterator &Ver, pkgCache::VerFileIterator VF(Cache,Cache.VerFileP + VerFile); VF->File = CurrentFile - Cache.PkgFileP; - VF->NextFile = Ver->FileList; - Ver->FileList = VF.Index(); + + // Link it to the end of the list + __apt_ptrloc *Last = &Ver->FileList; + for (pkgCache::VerFileIterator V = Ver.FileList(); V.end() == false; V++) + Last = &V->NextFile; + VF->NextFile = *Last; + *Last = VF.Index(); + VF->Offset = List.Offset(); VF->Size = List.Size(); if (Cache.HeaderP->MaxVerFileSize < VF->Size) Cache.HeaderP->MaxVerFileSize = VF->Size; + Cache.HeaderP->VerFileCount++; + return true; } /*}}}*/ @@ -240,26 +252,33 @@ bool pkgCacheGenerator::ListParser::NewDepends(pkgCache::VerIterator Ver, // Probe the reverse dependency list for a version string that matches if (Version.empty() == false) { - for (pkgCache::DepIterator I = Pkg.RevDependsList(); I.end() == false; I++) +/* for (pkgCache::DepIterator I = Pkg.RevDependsList(); I.end() == false; I++, Hit++) if (I->Version != 0 && I.TargetVer() == Version) - Dep->Version = I->Version; + Dep->Version = I->Version;*/ if (Dep->Version == 0) if ((Dep->Version = WriteString(Version)) == 0) return false; } - + // Link it to the package Dep->Package = Pkg.Index(); Dep->NextRevDepends = Pkg->RevDepends; Pkg->RevDepends = Dep.Index(); - // Link it to the version (at the end of the list) - unsigned long *Last = &Ver->DependsList; - for (pkgCache::DepIterator D = Ver.DependsList(); D.end() == false; D++) - Last = &D->NextDepends; - Dep->NextDepends = *Last; - *Last = Dep.Index(); + /* Link it to the version (at the end of the list) + Caching the old end point speeds up generation substantially */ + if (OldDepVer != Ver) + { + OldDepLast = &Ver->DependsList; + for (pkgCache::DepIterator D = Ver.DependsList(); D.end() == false; D++) + OldDepLast = &D->NextDepends; + OldDepVer = Ver; + } + Dep->NextDepends = *OldDepLast; + *OldDepLast = Dep.Index(); + OldDepLast = &Dep->NextDepends; + return true; } /*}}}*/ @@ -280,6 +299,7 @@ bool pkgCacheGenerator::ListParser::NewProvides(pkgCache::VerIterator Ver, unsigned long Provides = Owner->Map.Allocate(sizeof(pkgCache::Provides)); if (Provides == 0) return false; + Cache.HeaderP->ProvidesCount++; // Fill it in pkgCache::PrvIterator Prv(Cache,Cache.ProvideP + Provides,Cache.PkgP); @@ -342,10 +362,17 @@ bool pkgCacheGenerator::SelectFile(string File,unsigned long Flags) unsigned long pkgCacheGenerator::WriteUniqString(const char *S, unsigned int Size) { + /* We use a very small transient hash table here, this speeds up generation + by a fair amount on slower machines */ + pkgCache::StringItem *&Bucket = UniqHash[(S[0]*5 + S[1]) % _count(UniqHash)]; + if (Bucket != 0 && + stringcmp(S,S+Size,Cache.StrP + Bucket->String) == 0) + return Bucket->String; + // Search for an insertion point pkgCache::StringItem *I = Cache.StringItemP + Cache.HeaderP->StringList; int Res = 1; - unsigned long *Last = &Cache.HeaderP->StringList; + __apt_ptrloc *Last = &Cache.HeaderP->StringList; for (; I != Cache.StringItemP; Last = &I->NextItem, I = Cache.StringItemP + I->NextItem) { @@ -356,7 +383,10 @@ unsigned long pkgCacheGenerator::WriteUniqString(const char *S, // Match if (Res == 0) + { + Bucket = I; return I->String; + } // Get a structure unsigned long Item = Map.Allocate(sizeof(pkgCache::StringItem)); @@ -371,6 +401,7 @@ unsigned long pkgCacheGenerator::WriteUniqString(const char *S, if (ItemP->String == 0) return 0; + Bucket = ItemP; return ItemP->String; } /*}}}*/ @@ -385,12 +416,19 @@ bool pkgSrcCacheCheck(pkgSourceList &List) return false; string CacheFile = _config->FindFile("Dir::Cache::srcpkgcache"); - string ListDir = _config->FindFile("Dir::State::lists"); + string ListDir = _config->FindDir("Dir::State::lists"); // Count the number of missing files int Missing = 0; for (pkgSourceList::const_iterator I = List.begin(); I != List.end(); I++) { + // Only cache deb source types. + if (I->Type != pkgSourceList::Item::Deb) + { + Missing++; + continue; + } + string File = ListDir + URItoFileName(I->PackagesURI()); struct stat Buf; if (stat(File.c_str(),&Buf) != 0) @@ -400,7 +438,7 @@ bool pkgSrcCacheCheck(pkgSourceList &List) Missing++; } } - + // Open the source package cache if (FileExists(CacheFile) == false) return false; @@ -431,12 +469,16 @@ bool pkgSrcCacheCheck(pkgSourceList &List) return false; for (pkgCache::PkgFileIterator F(Cache); F.end() == false; F++) - { + { // Search for a match in the source list bool Bad = true; for (pkgSourceList::const_iterator I = List.begin(); I != List.end(); I++) { + // Only cache deb source types. + if (I->Type != pkgSourceList::Item::Deb) + continue; + string File = ListDir + URItoFileName(I->PackagesURI()); if (F.FileName() == File) { @@ -573,6 +615,70 @@ static bool pkgMergeStatus(OpProgress &Progress,pkgCacheGenerator &Gen, Progress.Progress(Pkg.Size()); } + return true; +} + /*}}}*/ +// GenerateSrcCache - Write the source package lists to the map /*{{{*/ +// --------------------------------------------------------------------- +/* This puts the source package cache into the given generator. */ +bool pkgGenerateSrcCache(pkgSourceList &List,OpProgress &Progress, + pkgCacheGenerator &Gen, + unsigned long &CurrentSize,unsigned long TotalSize) +{ + string ListDir = _config->FindDir("Dir::State::lists"); + + // Prepare the progress indicator + TotalSize = 0; + struct stat Buf; + for (pkgSourceList::const_iterator I = List.begin(); I != List.end(); I++) + { + string File = ListDir + URItoFileName(I->PackagesURI()); + if (stat(File.c_str(),&Buf) != 0) + continue; + TotalSize += Buf.st_size; + } + + if (pkgAddSourcesSize(TotalSize) == false) + return false; + + // Generate the pkg source cache + CurrentSize = 0; + for (pkgSourceList::const_iterator I = List.begin(); I != List.end(); I++) + { + // Only cache deb source types. + if (I->Type != pkgSourceList::Item::Deb) + continue; + + string File = ListDir + URItoFileName(I->PackagesURI()); + + if (FileExists(File) == false) + continue; + + FileFd Pkg(File,FileFd::ReadOnly); + debListParser Parser(Pkg); + Progress.OverallProgress(CurrentSize,TotalSize,Pkg.Size(),"Reading Package Lists"); + if (_error->PendingError() == true) + return _error->Error("Problem opening %s",File.c_str()); + CurrentSize += Pkg.Size(); + + Progress.SubProgress(0,I->PackagesInfo()); + if (Gen.SelectFile(File) == false) + return _error->Error("Problem with SelectFile %s",File.c_str()); + + if (Gen.MergeList(Parser) == false) + return _error->Error("Problem with MergeList %s",File.c_str()); + + // Check the release file + string RFile = ListDir + URItoFileName(I->ReleaseURI()); + if (FileExists(RFile) == true) + { + FileFd Rel(RFile,FileFd::ReadOnly); + if (_error->PendingError() == true) + return false; + Parser.LoadReleaseInfo(Gen.GetCurFile(),Rel); + } + } + return true; } /*}}}*/ @@ -587,59 +693,23 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress) string CacheFile = _config->FindFile("Dir::Cache::pkgcache"); bool SrcOk = pkgSrcCacheCheck(List); bool PkgOk = SrcOk && pkgPkgCacheCheck(CacheFile); - + // Rebuild the source and package caches if (SrcOk == false) { string SCacheFile = _config->FindFile("Dir::Cache::srcpkgcache"); - string ListDir = _config->FindFile("Dir::State::lists"); - FileFd SCacheF(SCacheFile,FileFd::WriteEmpty); FileFd CacheF(CacheFile,FileFd::WriteEmpty); DynamicMMap Map(CacheF,MMap::Public); if (_error->PendingError() == true) return false; - + pkgCacheGenerator Gen(Map,Progress); - - // Prepare the progress indicator + unsigned long CurrentSize = 0; unsigned long TotalSize = 0; - struct stat Buf; - for (pkgSourceList::const_iterator I = List.begin(); I != List.end(); I++) - { - string File = ListDir + URItoFileName(I->PackagesURI()); - if (stat(File.c_str(),&Buf) != 0) - continue; - TotalSize += Buf.st_size; - } - - if (pkgAddSourcesSize(TotalSize) == false) + if (pkgGenerateSrcCache(List,Progress,Gen,CurrentSize,TotalSize) == false) return false; - // Generate the pkg source cache - unsigned long CurrentSize = 0; - for (pkgSourceList::const_iterator I = List.begin(); I != List.end(); I++) - { - string File = ListDir + URItoFileName(I->PackagesURI()); - - if (stat(File.c_str(),&Buf) != 0) - continue; - - FileFd Pkg(File,FileFd::ReadOnly); - debListParser Parser(Pkg); - Progress.OverallProgress(CurrentSize,TotalSize,Pkg.Size(),"Reading Package Lists"); - if (_error->PendingError() == true) - return _error->Error("Problem opening %s",File.c_str()); - CurrentSize += Pkg.Size(); - - Progress.SubProgress(0,I->PackagesInfo()); - if (Gen.SelectFile(File) == false) - return _error->Error("Problem with SelectFile %s",File.c_str()); - - if (Gen.MergeList(Parser) == false) - return _error->Error("Problem with MergeList %s",File.c_str()); - } - // Write the src cache Gen.GetCache().HeaderP->Dirty = false; if (SCacheF.Write(Map.Data(),Map.Size()) == false) @@ -681,3 +751,124 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress) return pkgMergeStatus(Progress,Gen,CurrentSize,TotalSize); } /*}}}*/ +// MakeStatusCacheMem - Returns a map for the status cache /*{{{*/ +// --------------------------------------------------------------------- +/* This creates a map object for the status cache. If the process has write + access to the caches then it is the same as MakeStatusCache, otherwise it + creates a memory block and puts the cache in there. */ +MMap *pkgMakeStatusCacheMem(pkgSourceList &List,OpProgress &Progress) +{ + /* If the cache file is writeable this is just a wrapper for + MakeStatusCache */ + string CacheFile = _config->FindFile("Dir::Cache::pkgcache"); + bool Writeable = access(CacheFile.c_str(),W_OK) == 0; + if (Writeable == true) + { + if (pkgMakeStatusCache(List,Progress) == false) + return 0; + + // Open the cache file + FileFd File(_config->FindFile("Dir::Cache::pkgcache"),FileFd::ReadOnly); + if (_error->PendingError() == true) + return 0; + + MMap *Map = new MMap(File,MMap::Public | MMap::ReadOnly); + if (_error->PendingError() == true) + { + delete Map; + return 0; + } + return Map; + } + + // Mostly from MakeStatusCache.. + Progress.OverallProgress(0,1,1,"Reading Package Lists"); + + bool SrcOk = pkgSrcCacheCheck(List); + bool PkgOk = SrcOk && pkgPkgCacheCheck(CacheFile); + + // Rebuild the source and package caches + if (SrcOk == false) + { + DynamicMMap *Map = new DynamicMMap(MMap::Public); + if (_error->PendingError() == true) + { + delete Map; + return 0; + } + + pkgCacheGenerator Gen(*Map,Progress); + unsigned long CurrentSize = 0; + unsigned long TotalSize = 0; + if (pkgGenerateSrcCache(List,Progress,Gen,CurrentSize,TotalSize) == false) + { + delete Map; + return 0; + } + + // Merge in the source caches + if (pkgMergeStatus(Progress,Gen,CurrentSize,TotalSize) == false) + { + delete Map; + return 0; + } + + return Map; + } + + if (PkgOk == true) + { + Progress.OverallProgress(1,1,1,"Reading Package Lists"); + + // Open the cache file + FileFd File(_config->FindFile("Dir::Cache::pkgcache"),FileFd::ReadOnly); + if (_error->PendingError() == true) + return 0; + + MMap *Map = new MMap(File,MMap::Public | MMap::ReadOnly); + if (_error->PendingError() == true) + { + delete Map; + return 0; + } + return Map; + } + + // We use the source cache to generate the package cache + string SCacheFile = _config->FindFile("Dir::Cache::srcpkgcache"); + FileFd SCacheF(SCacheFile,FileFd::ReadOnly); + DynamicMMap *Map = new DynamicMMap(MMap::Public); + if (_error->PendingError() == true) + { + delete Map; + return 0; + } + + // Preload the map with the source cache + if (SCacheF.Read((unsigned char *)Map->Data() + Map->RawAllocate(SCacheF.Size()), + SCacheF.Size()) == false) + { + delete Map; + return 0; + } + + pkgCacheGenerator Gen(*Map,Progress); + + // Compute the progress + unsigned long TotalSize = 0; + if (pkgAddSourcesSize(TotalSize) == false) + { + delete Map; + return 0; + } + + unsigned long CurrentSize = 0; + if (pkgMergeStatus(Progress,Gen,CurrentSize,TotalSize) == false) + { + delete Map; + return 0; + } + + return Map; +} + /*}}}*/