X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/2fd65468b3cb25c725a709f9b470ced0ab4823a6..224da0778ff385ccbbc7f4abfbd2a6ddcbd9dbfc:/apt-pkg/orderlist.cc diff --git a/apt-pkg/orderlist.cc b/apt-pkg/orderlist.cc index 7cdea188e..7c950292a 100644 --- a/apt-pkg/orderlist.cc +++ b/apt-pkg/orderlist.cc @@ -1,13 +1,13 @@ // -*- mode: cpp; mode: fold -*- // Description /*{{{*/ -// $Id: orderlist.cc,v 1.5 1999/07/04 23:22:53 jgg Exp $ +// $Id: orderlist.cc,v 1.14 2001/05/07 05:49:43 jgg Exp $ /* ###################################################################### Order List - Represents and Manipulates an ordered list of packages. A list of packages can be ordered by a number of conflicting criteria each given a specific priority. Each package also has a set of flags - indicating some usefull things about it that are derived in the + indicating some useful things about it that are derived in the course of sorting. The pkgPackageManager class uses this class for all of it's installation ordering needs. @@ -39,31 +39,48 @@ ordering. Each of the features can be enabled in the sorting routine at an - arbitary priority to give quite abit of control over the final unpacking + arbitrary priority to give quite abit of control over the final unpacking order. The rules listed above may never be violated and are called Critical. When a critical rule is violated then a loop condition is recorded and will have to be delt with in the caller. + + The ordering keeps two lists, the main list and the 'After List'. The + purpose of the after list is to allow packages to be delayed. This is done + by setting the after flag on the package. Any package which requires this + package to be ordered before will inherit the after flag and so on. This + is used for CD swap ordering where all packages on a second CD have the + after flag set. This forces them and all their dependents to be ordered + toward the end. + + There are complications in this algorithm when presented with cycles. + For all known practical cases it works, all cases where it doesn't work + is fixable by tweaking the package descriptions. However, it should be + possible to impove this further to make some better choices when + presented with cycles. ##################################################################### */ /*}}}*/ // Include Files /*{{{*/ -#ifdef __GNUG__ -#pragma implementation "apt-pkg/orderlist.h" -#endif #include #include #include #include +#include +#include + +#include /*}}}*/ +using namespace std; + pkgOrderList *pkgOrderList::Me = 0; // OrderList::pkgOrderList - Constructor /*{{{*/ // --------------------------------------------------------------------- /* */ -pkgOrderList::pkgOrderList(pkgDepCache &Cache) : Cache(Cache) +pkgOrderList::pkgOrderList(pkgDepCache *pCache) : Cache(*pCache) { FileList = 0; Primary = 0; @@ -71,11 +88,12 @@ pkgOrderList::pkgOrderList(pkgDepCache &Cache) : Cache(Cache) RevDepends = 0; Remove = 0; LoopCount = -1; - + Debug = _config->FindB("Debug::pkgOrderList",false); + /* Construct the arrays, egcs 1.0.1 bug requires the package count hack */ - unsigned long Size = Cache.HeaderP->PackageCount; - Flags = new unsigned char[Size]; + unsigned long Size = Cache.Head().PackageCount; + Flags = new unsigned short[Size]; End = List = new Package *[Size]; memset(Flags,0,sizeof(*Flags)*Size); } @@ -102,28 +120,37 @@ bool pkgOrderList::IsMissing(PkgIterator Pkg) if (Pkg.State() == pkgCache::PkgIterator::NeedsConfigure && Cache[Pkg].Keep() == true) return false; + + if (FileList == 0) + return false; - if (FileList != 0 && FileList[Pkg->ID].empty() == false) + if (FileList[Pkg->ID].empty() == false) return false; + + // Missing Pseudo packages are missing if the real package is missing + if (pkgCache::VerIterator(Cache, Cache[Pkg].CandidateVer).Pseudo() == true) + return IsMissing(Pkg.Group().FindPkg("all")); + return true; } /*}}}*/ - // OrderList::DoRun - Does an order run /*{{{*/ // --------------------------------------------------------------------- /* The caller is expeted to have setup the desired probe state */ bool pkgOrderList::DoRun() { // Temp list - unsigned long Size = Cache.HeaderP->PackageCount; - Package **NList = new Package *[Size]; - + unsigned long Size = Cache.Head().PackageCount; + SPtrArray NList = new Package *[Size]; + SPtrArray AfterList = new Package *[Size]; + AfterEnd = AfterList; + Depth = 0; WipeFlags(Added | AddPending | Loop | InList); for (iterator I = List; I != End; I++) Flag(*I,InList); - + // Rebuild the main list into the temp list. iterator OldEnd = End; End = NList; @@ -131,13 +158,16 @@ bool pkgOrderList::DoRun() if (VisitNode(PkgIterator(Cache,*I)) == false) { End = OldEnd; - delete [] NList; return false; } + // Copy the after list to the end of the main list + for (Package **I = AfterList; I != AfterEnd; I++) + *End++ = *I; + // Swap the main list to the new list delete [] List; - List = NList; + List = NList.UnGuard(); return true; } /*}}}*/ @@ -149,22 +179,35 @@ bool pkgOrderList::DoRun() bool pkgOrderList::OrderCritical() { FileList = 0; - - Primary = &DepUnPackPre; + + Primary = &pkgOrderList::DepUnPackPreD; Secondary = 0; RevDepends = 0; Remove = 0; LoopCount = 0; - + // Sort Me = this; - qsort(List,End - List,sizeof(*List),&OrderCompareB); - + qsort(List,End - List,sizeof(*List),&OrderCompareB); + if (DoRun() == false) return false; - + if (LoopCount != 0) return _error->Error("Fatal, predepends looping detected"); + + if (Debug == true) + { + clog << "** Critical Unpack ordering done" << endl; + + for (iterator I = List; I != End; I++) + { + PkgIterator P(Cache,*I); + if (IsNow(P) == true) + clog << " " << P.FullName() << ' ' << IsMissing(P) << ',' << IsFlag(P,After) << endl; + } + } + return true; } /*}}}*/ @@ -176,41 +219,67 @@ bool pkgOrderList::OrderUnpack(string *FileList) { this->FileList = FileList; - Primary = &DepUnPackCrit; - Secondary = &DepConfigure; - RevDepends = &DepUnPackDep; - Remove = &DepRemove; + // Setup the after flags + if (FileList != 0) + { + WipeFlags(After); + + // Set the inlist flag + for (iterator I = List; I != End; I++) + { + PkgIterator P(Cache,*I); + if (IsMissing(P) == true && IsNow(P) == true) + Flag(*I,After); + } + } + + Primary = &pkgOrderList::DepUnPackCrit; + Secondary = &pkgOrderList::DepConfigure; + RevDepends = &pkgOrderList::DepUnPackDep; + Remove = &pkgOrderList::DepRemove; LoopCount = -1; // Sort Me = this; qsort(List,End - List,sizeof(*List),&OrderCompareA); + if (Debug == true) + clog << "** Pass A" << endl; if (DoRun() == false) return false; - + + if (Debug == true) + clog << "** Pass B" << endl; Secondary = 0; if (DoRun() == false) return false; + if (Debug == true) + clog << "** Pass C" << endl; LoopCount = 0; RevDepends = 0; Remove = 0; // Otherwise the libreadline remove problem occures if (DoRun() == false) return false; + if (Debug == true) + clog << "** Pass D" << endl; LoopCount = 0; - Primary = &DepUnPackPre; + Primary = &pkgOrderList::DepUnPackPre; if (DoRun() == false) return false; -/* cout << "----------END" << endl; - - for (iterator I = List; I != End; I++) + if (Debug == true) { - PkgIterator P(Cache,*I); - cout << P.Name() << endl; - }*/ + clog << "** Unpack ordering done" << endl; + + for (iterator I = List; I != End; I++) + { + PkgIterator P(Cache,*I); + if (IsNow(P) == true) + clog << " " << P.FullName() << ' ' << IsMissing(P) << ',' << IsFlag(P,After) << endl; + } + } return true; } @@ -222,7 +291,7 @@ bool pkgOrderList::OrderUnpack(string *FileList) bool pkgOrderList::OrderConfigure() { FileList = 0; - Primary = &DepConfigure; + Primary = &pkgOrderList::DepConfigure; Secondary = 0; RevDepends = 0; Remove = 0; @@ -230,32 +299,40 @@ bool pkgOrderList::OrderConfigure() return DoRun(); } /*}}}*/ - // OrderList::Score - Score the package for sorting /*{{{*/ // --------------------------------------------------------------------- /* Higher scores order earlier */ int pkgOrderList::Score(PkgIterator Pkg) { + static int const ScoreDelete = _config->FindI("OrderList::Score::Delete", 500); + // Removal is always done first if (Cache[Pkg].Delete() == true) - return 200; - + return ScoreDelete; + // This should never happen.. if (Cache[Pkg].InstVerIter(Cache).end() == true) return -1; - + + static int const ScoreEssential = _config->FindI("OrderList::Score::Essential", 200); + static int const ScoreImmediate = _config->FindI("OrderList::Score::Immediate", 10); + static int const ScorePreDepends = _config->FindI("OrderList::Score::PreDepends", 50); + int Score = 0; if ((Pkg->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential) - Score += 100; + Score += ScoreEssential; - for (DepIterator D = Cache[Pkg].InstVerIter(Cache).DependsList(); + if (IsFlag(Pkg,Immediate) == true) + Score += ScoreImmediate; + + for (DepIterator D = Cache[Pkg].InstVerIter(Cache).DependsList(); D.end() == false; D++) if (D->Type == pkgCache::Dep::PreDepends) { - Score += 50; + Score += ScorePreDepends; break; } - + // Important Required Standard Optional Extra signed short PrioMap[] = {0,5,4,3,1,0}; if (Cache[Pkg].InstVerIter(Cache)->Priority <= 5) @@ -312,16 +389,16 @@ int pkgOrderList::OrderCompareA(const void *a, const void *b) // We order packages with a set state toward the front int Res; - if ((Res = BoolCompare(Me->IsNow(A),Me->IsNow(B))) == 0) + if ((Res = BoolCompare(Me->IsNow(A),Me->IsNow(B))) != 0) return -1*Res; // We order missing files to toward the end - if (Me->FileList != 0) +/* if (Me->FileList != 0) { if ((Res = BoolCompare(Me->IsMissing(A), - Me->IsMissing(B))) == 0) + Me->IsMissing(B))) != 0) return Res; - } + }*/ if (A.State() != pkgCache::PkgIterator::NeedsNothing && B.State() == pkgCache::PkgIterator::NeedsNothing) @@ -333,6 +410,7 @@ int pkgOrderList::OrderCompareA(const void *a, const void *b) int ScoreA = Me->Score(A); int ScoreB = Me->Score(B); + if (ScoreA > ScoreB) return -1; @@ -344,7 +422,7 @@ int pkgOrderList::OrderCompareA(const void *a, const void *b) /*}}}*/ // OrderList::OrderCompareB - Order the installation by source /*{{{*/ // --------------------------------------------------------------------- -/* This orders by installation source. This is usefull to handle +/* This orders by installation source. This is useful to handle inter-source breaks */ int pkgOrderList::OrderCompareB(const void *a, const void *b) { @@ -369,6 +447,7 @@ int pkgOrderList::OrderCompareB(const void *a, const void *b) int ScoreA = Me->Score(A); int ScoreB = Me->Score(B); + if (ScoreA > ScoreB) return -1; @@ -378,7 +457,6 @@ int pkgOrderList::OrderCompareB(const void *a, const void *b) return strcmp(A.Name(),B.Name()); } /*}}}*/ - // OrderList::VisitDeps - Visit forward install dependencies /*{{{*/ // --------------------------------------------------------------------- /* This calls the dependency function for the normal forwards dependencies @@ -421,30 +499,36 @@ bool pkgOrderList::VisitRProvides(DepFunc F,VerIterator Ver) // OrderList::VisitProvides - Visit all of the providing packages /*{{{*/ // --------------------------------------------------------------------- /* This routine calls visit on all providing packages. */ -bool pkgOrderList::VisitProvides(DepIterator D) -{ - Version **List = D.AllTargets(); +bool pkgOrderList::VisitProvides(DepIterator D,bool Critical) +{ + SPtrArray List = D.AllTargets(); for (Version **I = List; *I != 0; I++) { VerIterator Ver(Cache,*I); PkgIterator Pkg = Ver.ParentPkg(); - - if (Cache[Pkg].Keep() == true) + + if (Cache[Pkg].Keep() == true && Pkg.State() == PkgIterator::NeedsNothing) continue; - if (D->Type != pkgCache::Dep::Conflicts && Cache[Pkg].InstallVer != *I) + if (D->Type != pkgCache::Dep::Conflicts && + D->Type != pkgCache::Dep::DpkgBreaks && + D->Type != pkgCache::Dep::Obsoletes && + Cache[Pkg].InstallVer != *I) continue; - if (D->Type == pkgCache::Dep::Conflicts && (Version *)Pkg.CurrentVer() != *I) + if ((D->Type == pkgCache::Dep::Conflicts || + D->Type == pkgCache::Dep::DpkgBreaks || + D->Type == pkgCache::Dep::Obsoletes) && + (Version *)Pkg.CurrentVer() != *I) continue; + // Skip over missing files + if (Critical == false && IsMissing(D.ParentPkg()) == true) + continue; + if (VisitNode(Pkg) == false) - { - delete [] List; return false; - } } - delete [] List; return true; } /*}}}*/ @@ -461,8 +545,12 @@ bool pkgOrderList::VisitNode(PkgIterator Pkg) IsFlag(Pkg,AddPending) == true || IsFlag(Pkg,InList) == false) return true; -/* for (int j = 0; j != Depth; j++) cout << ' '; - cout << "Visit " << Pkg.Name() << endl;*/ + if (Debug == true) + { + for (int j = 0; j != Depth; j++) clog << ' '; + clog << "Visit " << Pkg.FullName() << endl; + } + Depth++; // Color grey @@ -471,8 +559,8 @@ bool pkgOrderList::VisitNode(PkgIterator Pkg) DepFunc Old = Primary; // Perform immedate configuration of the package if so flagged. - if (IsFlag(Pkg,Immediate) == true && Primary != &DepUnPackPre) - Primary = &DepUnPackPreD; + if (IsFlag(Pkg,Immediate) == true && Primary != &pkgOrderList::DepUnPackPre) + Primary = &pkgOrderList::DepUnPackPreD; if (IsNow(Pkg) == true) { @@ -507,20 +595,24 @@ bool pkgOrderList::VisitNode(PkgIterator Pkg) if (IsFlag(Pkg,Added) == false) { Flag(Pkg,Added,Added | AddPending); - *End = Pkg; - End++; + if (IsFlag(Pkg,After) == true) + *AfterEnd++ = Pkg; + else + *End++ = Pkg; } Primary = Old; Depth--; - -/* for (int j = 0; j != Depth; j++) cout << ' '; - cout << "Leave " << Pkg.Name() << ' ' << IsFlag(Pkg,Added) << ',' << IsFlag(Pkg,AddPending) << endl;*/ + if (Debug == true) + { + for (int j = 0; j != Depth; j++) clog << ' '; + clog << "Leave " << Pkg.FullName() << ' ' << IsFlag(Pkg,Added) << ',' << IsFlag(Pkg,AddPending) << endl; + } + return true; } /*}}}*/ - // OrderList::DepUnPackCrit - Critical UnPacking ordering /*{{{*/ // --------------------------------------------------------------------- /* Critical unpacking ordering strives to satisfy Conflicts: and @@ -536,7 +628,8 @@ bool pkgOrderList::DepUnPackCrit(DepIterator D) { /* Reverse depenanices are only interested in conflicts, predepend breakage is ignored here */ - if (D->Type != pkgCache::Dep::Conflicts) + if (D->Type != pkgCache::Dep::Conflicts && + D->Type != pkgCache::Dep::Obsoletes) continue; // Duplication elimination, consider only the current version @@ -557,7 +650,10 @@ bool pkgOrderList::DepUnPackCrit(DepIterator D) { /* Forward critical dependencies MUST be correct before the package can be unpacked. */ - if (D->Type != pkgCache::Dep::Conflicts && D->Type != pkgCache::Dep::PreDepends) + if (D->Type != pkgCache::Dep::Conflicts && + D->Type != pkgCache::Dep::DpkgBreaks && + D->Type != pkgCache::Dep::Obsoletes && + D->Type != pkgCache::Dep::PreDepends) continue; /* We wish to check if the dep is okay in the now state of the @@ -585,8 +681,8 @@ bool pkgOrderList::DepUnPackCrit(DepIterator D) DepFunc Old = Primary; bool Res = false; if (D->Type == pkgCache::Dep::PreDepends) - Primary = &DepUnPackPreD; - Res = VisitProvides(D); + Primary = &pkgOrderList::DepUnPackPreD; + Res = VisitProvides(D,true); Primary = Old; if (Res == false) return false; @@ -599,8 +695,7 @@ bool pkgOrderList::DepUnPackCrit(DepIterator D) // --------------------------------------------------------------------- /* Critical PreDepends (also configure immediate and essential) strives to ensure not only that all conflicts+predepends are met but that this - package will be immediately configurable when it is unpacked. - + package will be immediately configurable when it is unpacked. Loops are preprocessed and logged. */ bool pkgOrderList::DepUnPackPreD(DepIterator D) { @@ -632,7 +727,7 @@ bool pkgOrderList::DepUnPackPreD(DepIterator D) continue; } - if (VisitProvides(D) == false) + if (VisitProvides(D,true) == false) return false; } return true; @@ -665,7 +760,7 @@ bool pkgOrderList::DepUnPackPre(DepIterator D) else continue; } - + /* We wish to check if the dep is okay in the now state of the target package against the install state of this package. */ if (CheckDep(D) == true) @@ -675,7 +770,7 @@ bool pkgOrderList::DepUnPackPre(DepIterator D) if (IsFlag(D.TargetPkg(),AddPending) == false) continue; } - + // This is the loop detection if (IsFlag(D.TargetPkg(),Added) == true || IsFlag(D.TargetPkg(),AddPending) == true) @@ -685,7 +780,7 @@ bool pkgOrderList::DepUnPackPre(DepIterator D) continue; } - if (VisitProvides(D) == false) + if (VisitProvides(D,true) == false) return false; } return true; @@ -721,13 +816,28 @@ bool pkgOrderList::DepUnPackDep(DepIterator D) if (CheckDep(D) == true) continue; + // Skip over missing files + if (IsMissing(D.ParentPkg()) == true) + continue; + if (VisitNode(D.ParentPkg()) == false) return false; } else + { if (D->Type == pkgCache::Dep::Depends) - if (VisitProvides(D) == false) + if (VisitProvides(D,false) == false) return false; + + if (D->Type == pkgCache::Dep::DpkgBreaks) + { + if (CheckDep(D) == true) + continue; + + if (VisitNode(D.TargetPkg()) == false) + return false; + } + } } return true; } @@ -747,7 +857,7 @@ bool pkgOrderList::DepConfigure(DepIterator D) for (; D.end() == false; D++) if (D->Type == pkgCache::Dep::Depends) - if (VisitProvides(D) == false) + if (VisitProvides(D,false) == false) return false; return true; } @@ -792,6 +902,10 @@ bool pkgOrderList::DepRemove(DepIterator D) continue; } + // Skip over missing files + if (IsMissing(D.ParentPkg()) == true) + continue; + if (VisitNode(D.ParentPkg()) == false) return false; } @@ -799,7 +913,6 @@ bool pkgOrderList::DepRemove(DepIterator D) return true; } /*}}}*/ - // OrderList::AddLoop - Add a loop to the loop list /*{{{*/ // --------------------------------------------------------------------- /* We record the loops. This is a relic since loop breaking is done @@ -830,7 +943,7 @@ bool pkgOrderList::AddLoop(DepIterator D) /* */ void pkgOrderList::WipeFlags(unsigned long F) { - unsigned long Size = Cache.HeaderP->PackageCount; + unsigned long Size = Cache.Head().PackageCount; for (unsigned long I = 0; I != Size; I++) Flags[I] &= ~F; } @@ -844,7 +957,8 @@ void pkgOrderList::WipeFlags(unsigned long F) this fails to produce a suitable result. */ bool pkgOrderList::CheckDep(DepIterator D) { - Version **List = D.AllTargets(); + SPtrArray List = D.AllTargets(); + bool Hit = false; for (Version **I = List; *I != 0; I++) { VerIterator Ver(Cache,*I); @@ -855,8 +969,8 @@ bool pkgOrderList::CheckDep(DepIterator D) way ordering works Added means the package will be unpacked before this one and AddPending means after. It is therefore correct to ignore AddPending in all cases, but that exposes - reverse-ordering loops which should be ignore. */ - if (IsFlag(Pkg,Added) == true || + reverse-ordering loops which should be ignored. */ + if (IsFlag(Pkg,Added) == true || (IsFlag(Pkg,AddPending) == true && D.Reverse() == true)) { if (Cache[Pkg].InstallVer != *I) @@ -867,20 +981,42 @@ bool pkgOrderList::CheckDep(DepIterator D) Pkg.State() != PkgIterator::NeedsNothing) continue; - delete [] List; - /* Conflicts requires that all versions are not present, depends just needs one */ - if (D->Type != pkgCache::Dep::Conflicts) + if (D->Type != pkgCache::Dep::Conflicts && + D->Type != pkgCache::Dep::DpkgBreaks && + D->Type != pkgCache::Dep::Obsoletes) + { + /* Try to find something that does not have the after flag set + if at all possible */ + if (IsFlag(Pkg,After) == true) + { + Hit = true; + continue; + } + return true; + } else + { + if (IsFlag(Pkg,After) == true) + Flag(D.ParentPkg(),After); + return false; + } } - delete [] List; - + + // We found a hit, but it had the after flag set + if (Hit == true && D->Type == pkgCache::Dep::PreDepends) + { + Flag(D.ParentPkg(),After); + return true; + } + /* Conflicts requires that all versions are not present, depends just needs one */ - if (D->Type == pkgCache::Dep::Conflicts) + if (D->Type == pkgCache::Dep::Conflicts || + D->Type == pkgCache::Dep::Obsoletes) return true; return false; }