X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/c5f44afc2446d738e30ea4c6021d4b60915546b1..7a511e5d959f59ec6062a84b3a1ae372ff4f8e86:/apt-pkg/pkgcachegen.cc?ds=inline diff --git a/apt-pkg/pkgcachegen.cc b/apt-pkg/pkgcachegen.cc index e2934d1fa..3eeb18cae 100644 --- a/apt-pkg/pkgcachegen.cc +++ b/apt-pkg/pkgcachegen.cc @@ -21,6 +21,7 @@ #include #include #include +#include #include @@ -32,7 +33,6 @@ #include #include #include -#include /*}}}*/ typedef vector::iterator FileIterator; @@ -137,7 +137,7 @@ bool pkgCacheGenerator::MergeList(ListParser &List, pkgCache::VerIterator Ver = Pkg.VersionList(); map_ptrloc *LastVer = &Pkg->VersionList; - for (; Ver != 0 && Ver.end() == false; LastVer = &Ver->NextVer, Ver++) + for (; Ver.end() == false; LastVer = &Ver->NextVer, Ver++) { pkgCache::DescIterator Desc = Ver.DescriptionList(); map_ptrloc *LastDesc = &Ver->DescriptionList; @@ -145,7 +145,7 @@ bool pkgCacheGenerator::MergeList(ListParser &List, // don't add a new description if we have one for the given // md5 && language - for ( ; Desc != 0 && Desc.end() == false; Desc++) + for ( ; Desc.end() == false; Desc++) if (MD5SumValue(Desc.md5()) == CurMd5 && Desc.LanguageCode() == List.DescriptionLanguage()) duplicate=true; @@ -153,7 +153,7 @@ bool pkgCacheGenerator::MergeList(ListParser &List, continue; for (Desc = Ver.DescriptionList(); - Desc != 0 && Desc.end() == false; + Desc.end() == false; LastDesc = &Desc->NextDesc, Desc++) { if (MD5SumValue(Desc.md5()) == CurMd5) @@ -175,7 +175,7 @@ bool pkgCacheGenerator::MergeList(ListParser &List, pkgCache::VerIterator Ver = Pkg.VersionList(); map_ptrloc *LastVer = &Pkg->VersionList; int Res = 1; - for (; Ver != 0 && Ver.end() == false; LastVer = &Ver->NextVer, Ver++) + for (; Ver.end() == false; LastVer = &Ver->NextVer, Ver++) { Res = Cache.VS->CmpVersion(Version,Ver.VerStr()); if (Res >= 0) @@ -209,7 +209,7 @@ bool pkgCacheGenerator::MergeList(ListParser &List, // Skip to the end of the same version set. if (Res == 0) { - for (; Ver != 0 && Ver.end() == false; LastVer = &Ver->NextVer, Ver++) + for (; Ver.end() == false; LastVer = &Ver->NextVer, Ver++) { Res = Cache.VS->CmpVersion(Version,Ver.VerStr()); if (Res != 0) @@ -248,7 +248,7 @@ bool pkgCacheGenerator::MergeList(ListParser &List, map_ptrloc *LastDesc = &Ver->DescriptionList; // Skip to the end of description set - for (; Desc != 0 && Desc.end() == false; LastDesc = &Desc->NextDesc, Desc++); + for (; Desc.end() == false; LastDesc = &Desc->NextDesc, Desc++); // Add new description *LastDesc = NewDescription(Desc, List.DescriptionLanguage(), List.Description_md5(), *LastDesc); @@ -306,7 +306,7 @@ bool pkgCacheGenerator::MergeFileProvides(ListParser &List) unsigned long Hash = List.VersionHash(); pkgCache::VerIterator Ver = Pkg.VersionList(); - for (; Ver != 0 && Ver.end() == false; Ver++) + for (; Ver.end() == false; Ver++) { if (Ver->Hash == Hash && Version.c_str() == Ver.VerStr()) { @@ -372,7 +372,7 @@ bool pkgCacheGenerator::NewFileVer(pkgCache::VerIterator &Ver, // Link it to the end of the list map_ptrloc *Last = &Ver->FileList; - for (pkgCache::VerFileIterator V = Ver.FileList(); V != 0 && V.end() == false; V++) + for (pkgCache::VerFileIterator V = Ver.FileList(); V.end() == false; V++) Last = &V->NextFile; VF->NextFile = *Last; *Last = VF.Index(); @@ -428,7 +428,7 @@ bool pkgCacheGenerator::NewFileDesc(pkgCache::DescIterator &Desc, // Link it to the end of the list map_ptrloc *Last = &Desc->FileList; - for (pkgCache::DescFileIterator D = Desc.FileList(); D != 0 && D.end() == false; D++) + for (pkgCache::DescFileIterator D = Desc.FileList(); D.end() == false; D++) Last = &D->NextFile; DF->NextFile = *Last; @@ -518,7 +518,7 @@ bool pkgCacheGenerator::ListParser::NewDepends(pkgCache::VerIterator Ver, if (OldDepVer != Ver) { OldDepLast = &Ver->DependsList; - for (pkgCache::DepIterator D = Ver.DependsList(); D != 0 && D.end() == false; D++) + for (pkgCache::DepIterator D = Ver.DependsList(); D.end() == false; D++) OldDepLast = &D->NextDepends; OldDepVer = Ver; } @@ -664,16 +664,23 @@ unsigned long pkgCacheGenerator::WriteUniqString(const char *S, static bool CheckValidity(const string &CacheFile, FileIterator Start, FileIterator End,MMap **OutMap = 0) { + bool const Debug = _config->FindB("Debug::pkgCacheGen", false); // No file, certainly invalid if (CacheFile.empty() == true || FileExists(CacheFile) == false) + { + if (Debug == true) + std::clog << "CacheFile doesn't exist" << std::endl; return false; - + } + // Map it FileFd CacheF(CacheFile,FileFd::ReadOnly); - SPtr Map = new MMap(CacheF,MMap::Public | MMap::ReadOnly); + SPtr Map = new MMap(CacheF,0); pkgCache Cache(Map); if (_error->PendingError() == true || Map->Size() == 0) { + if (Debug == true) + std::clog << "Errors are pending or Map is empty()" << std::endl; _error->Discard(); return false; } @@ -683,9 +690,15 @@ static bool CheckValidity(const string &CacheFile, FileIterator Start, SPtrArray Visited = new bool[Cache.HeaderP->PackageFileCount]; memset(Visited,0,sizeof(*Visited)*Cache.HeaderP->PackageFileCount); for (; Start != End; Start++) - { + { + if (Debug == true) + std::clog << "Checking PkgFile " << (*Start)->Describe() << ": "; if ((*Start)->HasPackages() == false) + { + if (Debug == true) + std::clog << "Has NO packages" << std::endl; continue; + } if ((*Start)->Exists() == false) { @@ -693,23 +706,40 @@ static bool CheckValidity(const string &CacheFile, FileIterator Start, _error->WarningE("stat",_("Couldn't stat source package list %s"), (*Start)->Describe().c_str()); #endif + if (Debug == true) + std::clog << "file doesn't exist" << std::endl; continue; } // FindInCache is also expected to do an IMS check. pkgCache::PkgFileIterator File = (*Start)->FindInCache(Cache); if (File.end() == true) + { + if (Debug == true) + std::clog << "FindInCache returned end-Pointer" << std::endl; return false; + } Visited[File->ID] = true; + if (Debug == true) + std::clog << "with ID " << File->ID << " is valid" << std::endl; } for (unsigned I = 0; I != Cache.HeaderP->PackageFileCount; I++) if (Visited[I] == false) + { + if (Debug == true) + std::clog << "File with ID" << I << " wasn't visited" << std::endl; return false; + } if (_error->PendingError() == true) { + if (Debug == true) + { + std::clog << "Validity failed because of pending errors:" << std::endl; + _error->DumpErrors(); + } _error->Discard(); return false; } @@ -796,7 +826,8 @@ static bool BuildCache(pkgCacheGenerator &Gen, bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress, MMap **OutMap,bool AllowMem) { - unsigned long MapSize = _config->FindI("APT::Cache-Limit",24*1024*1024); + bool const Debug = _config->FindB("Debug::pkgCacheGen", false); + unsigned long const MapSize = _config->FindI("APT::Cache-Limit",24*1024*1024); vector Files; for (vector::const_iterator i = List.begin(); @@ -810,13 +841,13 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress, Files.push_back (*j); } - unsigned long EndOfSource = Files.size(); + unsigned long const EndOfSource = Files.size(); if (_system->AddStatusFiles(Files) == false) return false; // Decide if we can write to the files.. - string CacheFile = _config->FindFile("Dir::Cache::pkgcache"); - string SrcCacheFile = _config->FindFile("Dir::Cache::srcpkgcache"); + string const CacheFile = _config->FindFile("Dir::Cache::pkgcache"); + string const SrcCacheFile = _config->FindFile("Dir::Cache::srcpkgcache"); // Decide if we can write to the cache bool Writeable = false; @@ -825,7 +856,9 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress, else if (SrcCacheFile.empty() == false) Writeable = access(flNotFile(SrcCacheFile).c_str(),W_OK) == 0; - + if (Debug == true) + std::clog << "Do we have write-access to the cache files? " << (Writeable ? "YES" : "NO") << std::endl; + if (Writeable == false && AllowMem == false && CacheFile.empty() == false) return _error->Error(_("Unable to write to %s"),flNotFile(CacheFile).c_str()); @@ -835,8 +868,12 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress, if (CheckValidity(CacheFile,Files.begin(),Files.end(),OutMap) == true) { Progress.OverallProgress(1,1,1,_("Reading package lists")); + if (Debug == true) + std::clog << "pkgcache.bin is valid - no need to build anything" << std::endl; return true; } + else if (Debug == true) + std::clog << "pkgcache.bin is NOT valid" << std::endl; /* At this point we know we need to reconstruct the package cache, begin. */ @@ -850,11 +887,15 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress, Map = new DynamicMMap(*CacheF,MMap::Public,MapSize); if (_error->PendingError() == true) return false; + if (Debug == true) + std::clog << "Open filebased MMap" << std::endl; } else { // Just build it in memory.. - Map = new DynamicMMap(MMap::Public,MapSize); + Map = new DynamicMMap(0,MapSize); + if (Debug == true) + std::clog << "Open memory Map (not filebased)" << std::endl; } // Lets try the source cache. @@ -863,15 +904,18 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress, if (CheckValidity(SrcCacheFile,Files.begin(), Files.begin()+EndOfSource) == true) { + if (Debug == true) + std::clog << "srcpkgcache.bin is valid - populate MMap with it." << std::endl; // Preload the map with the source cache FileFd SCacheF(SrcCacheFile,FileFd::ReadOnly); - unsigned long alloc = Map->RawAllocate(SCacheF.Size()); - if (alloc == 0 || SCacheF.Read((unsigned char *)Map->Data() + alloc, - SCacheF.Size()) == false) + unsigned long const alloc = Map->RawAllocate(SCacheF.Size()); + if ((alloc == 0 && _error->PendingError()) + || SCacheF.Read((unsigned char *)Map->Data() + alloc, + SCacheF.Size()) == false) return false; TotalSize = ComputeSize(Files.begin()+EndOfSource,Files.end()); - + // Build the status cache pkgCacheGenerator Gen(Map.Get(),&Progress); if (_error->PendingError() == true) @@ -882,6 +926,8 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress, } else { + if (Debug == true) + std::clog << "srcpkgcache.bin is NOT valid - rebuild" << std::endl; TotalSize = ComputeSize(Files.begin(),Files.end()); // Build the source cache @@ -920,6 +966,8 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress, Files.begin()+EndOfSource,Files.end()) == false) return false; } + if (Debug == true) + std::clog << "Caches are ready for shipping" << std::endl; if (_error->PendingError() == true) return false; @@ -928,7 +976,7 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress, if (CacheF != 0) { delete Map.UnGuard(); - *OutMap = new MMap(*CacheF,MMap::Public | MMap::ReadOnly); + *OutMap = new MMap(*CacheF,0); } else { @@ -950,8 +998,7 @@ bool pkgMakeOnlyStatusCache(OpProgress &Progress,DynamicMMap **OutMap) if (_system->AddStatusFiles(Files) == false) return false; - SPtr Map; - Map = new DynamicMMap(MMap::Public,MapSize); + SPtr Map = new DynamicMMap(0,MapSize); unsigned long CurrentSize = 0; unsigned long TotalSize = 0;