diff options
Diffstat (limited to 'apt-pkg/acquire.cc')
| -rw-r--r-- | apt-pkg/acquire.cc | 126 |
1 files changed, 110 insertions, 16 deletions
diff --git a/apt-pkg/acquire.cc b/apt-pkg/acquire.cc index 0c815c005..14c8863dc 100644 --- a/apt-pkg/acquire.cc +++ b/apt-pkg/acquire.cc @@ -23,6 +23,7 @@ #include <apt-pkg/strutl.h> #include <apt-pkg/fileutl.h> +#include <algorithm> #include <string> #include <vector> #include <iostream> @@ -682,7 +683,8 @@ bool pkgAcquire::Queue::Enqueue(ItemDesc &Item) for (; *I != 0; I = &(*I)->Next) if (Item.URI == (*I)->URI) { - Item.Owner->Status = Item::StatDone; + (*I)->Owners.push_back(Item.Owner); + Item.Owner->Status = (*I)->Owner->Status; return false; } @@ -705,13 +707,13 @@ bool pkgAcquire::Queue::Dequeue(Item *Owner) { if (Owner->Status == pkgAcquire::Item::StatFetching) return _error->Error("Tried to dequeue a fetching object"); - + bool Res = false; - + QItem **I = &Items; for (; *I != 0;) { - if ((*I)->Owner == Owner) + if (Owner == (*I)->Owner) { QItem *Jnk= *I; *I = (*I)->Next; @@ -722,7 +724,7 @@ bool pkgAcquire::Queue::Dequeue(Item *Owner) else I = &(*I)->Next; } - + return Res; } /*}}}*/ @@ -799,9 +801,12 @@ pkgAcquire::Queue::QItem *pkgAcquire::Queue::FindItem(string URI,pkgAcquire::Wor bool pkgAcquire::Queue::ItemDone(QItem *Itm) { PipeDepth--; - if (Itm->Owner->Status == pkgAcquire::Item::StatFetching) - Itm->Owner->Status = pkgAcquire::Item::StatDone; - + for (QItem::owner_iterator O = Itm->Owners.begin(); O != Itm->Owners.end(); ++O) + { + if ((*O)->Status == pkgAcquire::Item::StatFetching) + (*O)->Status = pkgAcquire::Item::StatDone; + } + if (Itm->Owner->QueueCounter <= 1) Owner->Dequeue(Itm->Owner); else @@ -809,7 +814,7 @@ bool pkgAcquire::Queue::ItemDone(QItem *Itm) Dequeue(Itm->Owner); Owner->Bump(); } - + return Cycle(); } /*}}}*/ @@ -824,7 +829,7 @@ bool pkgAcquire::Queue::Cycle() if (PipeDepth < 0) return _error->Error("Pipedepth failure"); - + // Look for a queable item QItem *I = Items; while (PipeDepth < (signed)MaxPipeDepth) @@ -832,18 +837,19 @@ bool pkgAcquire::Queue::Cycle() for (; I != 0; I = I->Next) if (I->Owner->Status == pkgAcquire::Item::StatIdle) break; - + // Nothing to do, queue is idle. if (I == 0) return true; - + I->Worker = Workers; - I->Owner->Status = pkgAcquire::Item::StatFetching; + for (QItem::owner_iterator O = I->Owners.begin(); O != I->Owners.end(); ++O) + (*O)->Status = pkgAcquire::Item::StatFetching; PipeDepth++; if (Workers->QueueItem(I) == false) return false; } - + return true; } /*}}}*/ @@ -855,6 +861,94 @@ void pkgAcquire::Queue::Bump() Cycle(); } /*}}}*/ +HashStringList pkgAcquire::Queue::QItem::GetExpectedHashes() const /*{{{*/ +{ + /* each Item can have multiple owners and each owner might have different + hashes, even if that is unlikely in practice and if so at least some + owners will later fail. There is one situation through which is not a + failure and still needs this handling: Two owners who expect the same + file, but one owner only knows the SHA1 while the other only knows SHA256. */ + HashStringList superhsl; + for (pkgAcquire::Queue::QItem::owner_iterator O = Owners.begin(); O != Owners.end(); ++O) + { + HashStringList const hsl = (*O)->GetExpectedHashes(); + if (hsl.usable() == false) + continue; + if (superhsl.usable() == false) + superhsl = hsl; + else + { + // we merge both lists - if we find disagreement send no hashes + HashStringList::const_iterator hs = hsl.begin(); + for (; hs != hsl.end(); ++hs) + if (superhsl.push_back(*hs) == false) + break; + if (hs != hsl.end()) + { + superhsl.clear(); + break; + } + } + } + return superhsl; +} + /*}}}*/ +APT_PURE unsigned long long pkgAcquire::Queue::QItem::GetMaximumSize() const /*{{{*/ +{ + unsigned long long Maximum = std::numeric_limits<unsigned long long>::max(); + for (pkgAcquire::Queue::QItem::owner_iterator O = Owners.begin(); O != Owners.end(); ++O) + { + if ((*O)->FileSize == 0) + continue; + Maximum = std::min(Maximum, (*O)->FileSize); + } + if (Maximum == std::numeric_limits<unsigned long long>::max()) + return 0; + return Maximum; +} + /*}}}*/ +void pkgAcquire::Queue::QItem::SyncDestinationFiles() const /*{{{*/ +{ + /* ensure that the first owner has the best partial file of all and + the rest have (potentially dangling) symlinks to it so that + everything (like progress reporting) finds it easily */ + std::string superfile = Owner->DestFile; + off_t supersize = 0; + for (pkgAcquire::Queue::QItem::owner_iterator O = Owners.begin(); O != Owners.end(); ++O) + { + if ((*O)->DestFile == superfile) + continue; + struct stat file; + if (lstat((*O)->DestFile.c_str(),&file) == 0) + { + if ((file.st_mode & S_IFREG) == 0) + unlink((*O)->DestFile.c_str()); + else if (supersize < file.st_size) + { + supersize = file.st_size; + unlink(superfile.c_str()); + rename((*O)->DestFile.c_str(), superfile.c_str()); + } + else + unlink((*O)->DestFile.c_str()); + if (symlink(superfile.c_str(), (*O)->DestFile.c_str()) != 0) + { + ; // not a problem per-se and no real alternative + } + } + } +} + /*}}}*/ +std::string pkgAcquire::Queue::QItem::Custom600Headers() const /*{{{*/ +{ + /* The others are relatively easy to merge, but this one? + Lets not merge and see how far we can run with it… + Likely, nobody will ever notice as all the items will + be of the same class and hence generate the same headers. */ + return Owner->Custom600Headers(); +} + /*}}}*/ + // AcquireStatus::pkgAcquireStatus - Constructor /*{{{*/ // --------------------------------------------------------------------- /* */ @@ -914,9 +1008,9 @@ bool pkgAcquireStatus::Pulse(pkgAcquire *Owner) { CurrentBytes += I->CurrentSize; ResumeSize += I->ResumePoint; - + // Files with unknown size always have 100% completion - if (I->CurrentItem->Owner->FileSize == 0 && + if (I->CurrentItem->Owner->FileSize == 0 && I->CurrentItem->Owner->Complete == false) TotalBytes += I->CurrentSize; } |