X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/ff371080d8672b94ef289f1162704e74959b4ddf..650faab01603caac04494d54cf6b10a65c00ea13:/apt-pkg/contrib/mmap.cc diff --git a/apt-pkg/contrib/mmap.cc b/apt-pkg/contrib/mmap.cc index d233e51bc..a110a7019 100644 --- a/apt-pkg/contrib/mmap.cc +++ b/apt-pkg/contrib/mmap.cc @@ -17,20 +17,21 @@ /*}}}*/ // Include Files /*{{{*/ #define _BSD_SOURCE +#include + #include #include -#include - #include #include #include #include #include #include - #include - /*}}}*/ + +#include + /*}}}*/ // MMap::MMap - Constructor /*{{{*/ // --------------------------------------------------------------------- @@ -94,7 +95,7 @@ bool MMap::Map(FileFd &Fd) return false; } else - return _error->Errno("mmap",_("Couldn't make mmap of %lu bytes"), + return _error->Errno("mmap",_("Couldn't make mmap of %llu bytes"), iSize); } @@ -106,7 +107,7 @@ bool MMap::Map(FileFd &Fd) /* */ bool MMap::Close(bool DoSync) { - if ((Flags & UnMapped) == UnMapped || Base == 0 || iSize == 0) + if ((Flags & UnMapped) == UnMapped || validData() == false || iSize == 0) return true; if (DoSync == true) @@ -165,7 +166,7 @@ bool MMap::Sync(unsigned long Start,unsigned long Stop) return true; #ifdef _POSIX_SYNCHRONIZED_IO - unsigned long PSize = sysconf(_SC_PAGESIZE); + unsigned long long PSize = sysconf(_SC_PAGESIZE); if ((Flags & ReadOnly) != ReadOnly) { if (SyncToFd != 0) @@ -176,7 +177,7 @@ bool MMap::Sync(unsigned long Start,unsigned long Stop) } else { - if (msync((char *)Base+(int)(Start/PSize)*PSize,Stop - Start,MS_SYNC) < 0) + if (msync((char *)Base+(unsigned long long)(Start/PSize)*PSize,Stop - Start,MS_SYNC) < 0) return _error->Errno("msync", _("Unable to synchronize mmap")); } } @@ -196,7 +197,7 @@ DynamicMMap::DynamicMMap(FileFd &F,unsigned long Flags,unsigned long const &Work if (_error->PendingError() == true) return; - unsigned long EndOfFile = Fd->Size(); + unsigned long long EndOfFile = Fd->Size(); if (EndOfFile > WorkSpace) WorkSpace = EndOfFile; else if(WorkSpace > 0) @@ -225,23 +226,31 @@ DynamicMMap::DynamicMMap(unsigned long Flags,unsigned long const &WorkSpace, // disable Moveable if we don't grow if (Grow == 0) - Flags &= ~Moveable; + this->Flags &= ~Moveable; #ifndef __linux__ // kfreebsd doesn't have mremap, so we use the fallback - if ((Flags & Moveable) == Moveable) - Flags |= Fallback; + if ((this->Flags & Moveable) == Moveable) + this->Flags |= Fallback; #endif #ifdef _POSIX_MAPPED_FILES - if ((Flags & Fallback) != Fallback) { + if ((this->Flags & Fallback) != Fallback) { // Set the permissions. int Prot = PROT_READ; +#ifdef MAP_ANONYMOUS int Map = MAP_PRIVATE | MAP_ANONYMOUS; - if ((Flags & ReadOnly) != ReadOnly) +#else + int Map = MAP_PRIVATE | MAP_ANON; +#endif + if ((this->Flags & ReadOnly) != ReadOnly) Prot |= PROT_WRITE; - if ((Flags & Public) == Public) + if ((this->Flags & Public) == Public) +#ifdef MAP_ANONYMOUS Map = MAP_SHARED | MAP_ANONYMOUS; +#else + Map = MAP_SHARED | MAP_ANON; +#endif // use anonymous mmap() to get the memory Base = (unsigned char*) mmap(0, WorkSpace, Prot, Map, -1, 0); @@ -266,6 +275,8 @@ DynamicMMap::~DynamicMMap() { if (Fd == 0) { + if (validData() == false) + return; #ifdef _POSIX_MAPPED_FILES munmap(Base, WorkSpace); #else @@ -274,7 +285,7 @@ DynamicMMap::~DynamicMMap() return; } - unsigned long EndOfFile = iSize; + unsigned long long EndOfFile = iSize; iSize = WorkSpace; Close(false); if(ftruncate(Fd->Fd(),EndOfFile) < 0) @@ -284,9 +295,9 @@ DynamicMMap::~DynamicMMap() // DynamicMMap::RawAllocate - Allocate a raw chunk of unaligned space /*{{{*/ // --------------------------------------------------------------------- /* This allocates a block of memory aligned to the given size */ -unsigned long DynamicMMap::RawAllocate(unsigned long Size,unsigned long Aln) +unsigned long DynamicMMap::RawAllocate(unsigned long long Size,unsigned long Aln) { - unsigned long Result = iSize; + unsigned long long Result = iSize; if (Aln != 0) Result += Aln - (iSize%Aln); @@ -297,7 +308,7 @@ unsigned long DynamicMMap::RawAllocate(unsigned long Size,unsigned long Aln) { if(!Grow()) { - _error->Error(_("Dynamic MMap ran out of room. Please increase the size " + _error->Fatal(_("Dynamic MMap ran out of room. Please increase the size " "of APT::Cache-Limit. Current value: %lu. (man 5 apt.conf)"), WorkSpace); return 0; } @@ -314,7 +325,7 @@ unsigned long DynamicMMap::Allocate(unsigned long ItemSize) // Look for a matching pool entry Pool *I; Pool *Empty = 0; - for (I = Pools; I != Pools + PoolCount; I++) + for (I = Pools; I != Pools + PoolCount; ++I) { if (I->ItemSize == 0) Empty = I; @@ -342,7 +353,11 @@ unsigned long DynamicMMap::Allocate(unsigned long ItemSize) { const unsigned long size = 20*1024; I->Count = size/ItemSize; + Pool* oldPools = Pools; Result = RawAllocate(size,ItemSize); + if (Pools != oldPools) + I += Pools - oldPools; + // Does the allocation failed ? if (Result == 0 && _error->PendingError()) return 0; @@ -365,7 +380,7 @@ unsigned long DynamicMMap::WriteString(const char *String, if (Len == (unsigned long)-1) Len = strlen(String); - unsigned long Result = RawAllocate(Len+1,0); + unsigned long const Result = RawAllocate(Len+1,0); if (Result == 0 && _error->PendingError()) return 0; @@ -394,17 +409,23 @@ bool DynamicMMap::Grow() { if (Limit != 0 && WorkSpace >= Limit) return _error->Error(_("Unable to increase the size of the MMap as the " "limit of %lu bytes is already reached."), Limit); + if (GrowFactor <= 0) + return _error->Error(_("Unable to increase size of the MMap as automatic growing is disabled by user.")); - unsigned long const newSize = WorkSpace + 1024*1024; + unsigned long long const newSize = WorkSpace + GrowFactor; if(Fd != 0) { Fd->Seek(newSize - 1); char C = 0; Fd->Write(&C,sizeof(C)); } + + unsigned long const poolOffset = Pools - ((Pool*) Base); + if ((Flags & Fallback) != Fallback) { #if defined(_POSIX_MAPPED_FILES) && defined(__linux__) #ifdef MREMAP_MAYMOVE + if ((Flags & Moveable) == Moveable) Base = mremap(Base, WorkSpace, newSize, MREMAP_MAYMOVE); else @@ -425,6 +446,7 @@ bool DynamicMMap::Grow() { return false; } + Pools =(Pool*) Base + poolOffset; WorkSpace = newSize; return true; }