diff options
Diffstat (limited to 'apt-pkg/contrib/mmap.cc')
| -rw-r--r-- | apt-pkg/contrib/mmap.cc | 31 |
1 files changed, 21 insertions, 10 deletions
diff --git a/apt-pkg/contrib/mmap.cc b/apt-pkg/contrib/mmap.cc index 593bb063b..a176da636 100644 --- a/apt-pkg/contrib/mmap.cc +++ b/apt-pkg/contrib/mmap.cc @@ -102,6 +102,7 @@ bool MMap::Map(FileFd &Fd) { // for readonly, we don't need sync, so make it simple Base = malloc(iSize); + SyncToFd = new FileFd(); return Fd.Read(Base, iSize); } // FIXME: Writing to compressed fd's ? @@ -155,11 +156,10 @@ bool MMap::Close(bool DoSync) /* This is done in syncronous mode - the docs indicate that this will not return till all IO is complete */ bool MMap::Sync() -{ +{ if ((Flags & UnMapped) == UnMapped) return true; - -#ifdef _POSIX_SYNCHRONIZED_IO + if ((Flags & ReadOnly) != ReadOnly) { if (SyncToFd != NULL) @@ -169,11 +169,12 @@ bool MMap::Sync() } else { +#ifdef _POSIX_SYNCHRONIZED_IO if (msync((char *)Base, iSize, MS_SYNC) < 0) return _error->Errno("msync", _("Unable to synchronize mmap")); +#endif } } -#endif return true; } /*}}}*/ @@ -184,9 +185,7 @@ bool MMap::Sync(unsigned long Start,unsigned long Stop) { if ((Flags & UnMapped) == UnMapped) return true; - -#ifdef _POSIX_SYNCHRONIZED_IO - unsigned long long PSize = sysconf(_SC_PAGESIZE); + if ((Flags & ReadOnly) != ReadOnly) { if (SyncToFd != 0) @@ -197,11 +196,13 @@ bool MMap::Sync(unsigned long Start,unsigned long Stop) } else { +#ifdef _POSIX_SYNCHRONIZED_IO + unsigned long long const PSize = sysconf(_SC_PAGESIZE); if (msync((char *)Base+(unsigned long long)(Start/PSize)*PSize,Stop - Start,MS_SYNC) < 0) return _error->Errno("msync", _("Unable to synchronize mmap")); +#endif } } -#endif return true; } /*}}}*/ @@ -216,7 +217,17 @@ DynamicMMap::DynamicMMap(FileFd &F,unsigned long Flags,unsigned long const &Work { if (_error->PendingError() == true) return; - + + // disable Moveable if we don't grow + if (Grow == 0) + this->Flags &= ~Moveable; + +#ifndef __linux__ + // kfreebsd doesn't have mremap, so we use the fallback + if ((this->Flags & Moveable) == Moveable) + this->Flags |= Fallback; +#endif + unsigned long long EndOfFile = Fd->Size(); if (EndOfFile > WorkSpace) WorkSpace = EndOfFile; @@ -328,7 +339,7 @@ unsigned long DynamicMMap::RawAllocate(unsigned long long Size,unsigned long Aln if(!Grow()) { _error->Fatal(_("Dynamic MMap ran out of room. Please increase the size " - "of APT::Cache-Limit. Current value: %lu. (man 5 apt.conf)"), WorkSpace); + "of APT::Cache-Start. Current value: %lu. (man 5 apt.conf)"), WorkSpace); return 0; } } |