[llvm] r200040 - Make ObjectFile ownership of the MemoryBuffer optional.
Alp Toker
alp at nuanti.com
Fri Jan 24 14:01:54 PST 2014
On 24/01/2014 21:32, Rafael Espindola wrote:
> Author: rafael
> Date: Fri Jan 24 15:32:21 2014
> New Revision: 200040
>
> URL: http://llvm.org/viewvc/llvm-project?rev=200040&view=rev
> Log:
> Make ObjectFile ownership of the MemoryBuffer optional.
>
> This allows llvm-ar to mmap the input files only once.
>
> Modified:
> llvm/trunk/include/llvm/Object/Binary.h
> llvm/trunk/include/llvm/Object/COFF.h
> llvm/trunk/include/llvm/Object/ELFObjectFile.h
> llvm/trunk/include/llvm/Object/MachO.h
> llvm/trunk/include/llvm/Object/ObjectFile.h
> llvm/trunk/lib/Object/Binary.cpp
> llvm/trunk/lib/Object/COFFObjectFile.cpp
> llvm/trunk/lib/Object/ELFObjectFile.cpp
> llvm/trunk/lib/Object/MachOObjectFile.cpp
> llvm/trunk/lib/Object/ObjectFile.cpp
> llvm/trunk/tools/llvm-ar/llvm-ar.cpp
>
> Modified: llvm/trunk/include/llvm/Object/Binary.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Object/Binary.h?rev=200040&r1=200039&r2=200040&view=diff
> ==============================================================================
> --- llvm/trunk/include/llvm/Object/Binary.h (original)
> +++ llvm/trunk/include/llvm/Object/Binary.h Fri Jan 24 15:32:21 2014
> @@ -31,11 +31,12 @@ private:
> Binary(const Binary &other) LLVM_DELETED_FUNCTION;
>
> unsigned int TypeID;
> + bool BufferOwned;
>
> protected:
> MemoryBuffer *Data;
>
> - Binary(unsigned int Type, MemoryBuffer *Source);
> + Binary(unsigned int Type, MemoryBuffer *Source, bool BufferOwned = true);
Managing MemoryBuffer lifetimes this way seems unsatisfactory. Would it
be possible to refcount or use some kind of smart pointer?
Alp.
>
> enum {
> ID_Archive,
>
> Modified: llvm/trunk/include/llvm/Object/COFF.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Object/COFF.h?rev=200040&r1=200039&r2=200040&view=diff
> ==============================================================================
> --- llvm/trunk/include/llvm/Object/COFF.h (original)
> +++ llvm/trunk/include/llvm/Object/COFF.h Fri Jan 24 15:32:21 2014
> @@ -320,7 +320,7 @@ protected:
> StringRef &Result) const;
>
> public:
> - COFFObjectFile(MemoryBuffer *Object, error_code &ec);
> + COFFObjectFile(MemoryBuffer *Object, error_code &EC, bool BufferOwned = true);
> virtual symbol_iterator begin_symbols() const;
> virtual symbol_iterator end_symbols() const;
> virtual symbol_iterator begin_dynamic_symbols() const;
>
> Modified: llvm/trunk/include/llvm/Object/ELFObjectFile.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Object/ELFObjectFile.h?rev=200040&r1=200039&r2=200040&view=diff
> ==============================================================================
> --- llvm/trunk/include/llvm/Object/ELFObjectFile.h (original)
> +++ llvm/trunk/include/llvm/Object/ELFObjectFile.h Fri Jan 24 15:32:21 2014
> @@ -165,7 +165,7 @@ protected:
> bool isDyldELFObject;
>
> public:
> - ELFObjectFile(MemoryBuffer *Object, error_code &ec);
> + ELFObjectFile(MemoryBuffer *Object, error_code &EC, bool BufferOwned = true);
>
> const Elf_Sym *getSymbol(DataRefImpl Symb) const;
>
> @@ -813,11 +813,12 @@ ELFObjectFile<ELFT>::getRela(DataRefImpl
> }
>
> template <class ELFT>
> -ELFObjectFile<ELFT>::ELFObjectFile(MemoryBuffer *Object, error_code &ec)
> +ELFObjectFile<ELFT>::ELFObjectFile(MemoryBuffer *Object, error_code &ec,
> + bool BufferOwned)
> : ObjectFile(getELFType(static_cast<endianness>(ELFT::TargetEndianness) ==
> support::little,
> ELFT::Is64Bits),
> - Object),
> + Object, BufferOwned),
> EF(Object, ec) {}
>
> template <class ELFT>
>
> Modified: llvm/trunk/include/llvm/Object/MachO.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Object/MachO.h?rev=200040&r1=200039&r2=200040&view=diff
> ==============================================================================
> --- llvm/trunk/include/llvm/Object/MachO.h (original)
> +++ llvm/trunk/include/llvm/Object/MachO.h Fri Jan 24 15:32:21 2014
> @@ -57,7 +57,7 @@ public:
> };
>
> MachOObjectFile(MemoryBuffer *Object, bool IsLittleEndian, bool Is64Bits,
> - error_code &ec);
> + error_code &EC, bool BufferOwned = true);
>
> virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const;
> virtual error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const;
>
> Modified: llvm/trunk/include/llvm/Object/ObjectFile.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Object/ObjectFile.h?rev=200040&r1=200039&r2=200040&view=diff
> ==============================================================================
> --- llvm/trunk/include/llvm/Object/ObjectFile.h (original)
> +++ llvm/trunk/include/llvm/Object/ObjectFile.h Fri Jan 24 15:32:21 2014
> @@ -270,7 +270,7 @@ class ObjectFile : public Binary {
> ObjectFile(const ObjectFile &other) LLVM_DELETED_FUNCTION;
>
> protected:
> - ObjectFile(unsigned int Type, MemoryBuffer *source);
> + ObjectFile(unsigned int Type, MemoryBuffer *Source, bool BufferOwned = true);
>
> const uint8_t *base() const {
> return reinterpret_cast<const uint8_t *>(Data->getBufferStart());
> @@ -379,7 +379,7 @@ public:
> /// @brief Create ObjectFile from path.
> static ErrorOr<ObjectFile *> createObjectFile(StringRef ObjectPath);
> static ErrorOr<ObjectFile *>
> - createObjectFile(MemoryBuffer *Object,
> + createObjectFile(MemoryBuffer *Object, bool BufferOwned = true,
> sys::fs::file_magic Type = sys::fs::file_magic::unknown);
>
> static inline bool classof(const Binary *v) {
> @@ -387,9 +387,12 @@ public:
> }
>
> public:
> - static ErrorOr<ObjectFile *> createCOFFObjectFile(MemoryBuffer *Object);
> - static ErrorOr<ObjectFile *> createELFObjectFile(MemoryBuffer *Object);
> - static ErrorOr<ObjectFile *> createMachOObjectFile(MemoryBuffer *Object);
> + static ErrorOr<ObjectFile *> createCOFFObjectFile(MemoryBuffer *Object,
> + bool BufferOwned = true);
> + static ErrorOr<ObjectFile *> createELFObjectFile(MemoryBuffer *Object,
> + bool BufferOwned = true);
> + static ErrorOr<ObjectFile *> createMachOObjectFile(MemoryBuffer *Object,
> + bool BufferOwned = true);
> };
>
> // Inline function definitions.
>
> Modified: llvm/trunk/lib/Object/Binary.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Object/Binary.cpp?rev=200040&r1=200039&r2=200040&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Object/Binary.cpp (original)
> +++ llvm/trunk/lib/Object/Binary.cpp Fri Jan 24 15:32:21 2014
> @@ -26,12 +26,12 @@ using namespace llvm;
> using namespace object;
>
> Binary::~Binary() {
> - delete Data;
> + if (BufferOwned)
> + delete Data;
> }
>
> -Binary::Binary(unsigned int Type, MemoryBuffer *Source)
> - : TypeID(Type)
> - , Data(Source) {}
> +Binary::Binary(unsigned int Type, MemoryBuffer *Source, bool BufferOwned)
> + : TypeID(Type), BufferOwned(BufferOwned), Data(Source) {}
>
> StringRef Binary::getData() const {
> return Data->getBuffer();
>
> Modified: llvm/trunk/lib/Object/COFFObjectFile.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Object/COFFObjectFile.cpp?rev=200040&r1=200039&r2=200040&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Object/COFFObjectFile.cpp (original)
> +++ llvm/trunk/lib/Object/COFFObjectFile.cpp Fri Jan 24 15:32:21 2014
> @@ -463,11 +463,12 @@ error_code COFFObjectFile::initExportTab
> return object_error::success;
> }
>
> -COFFObjectFile::COFFObjectFile(MemoryBuffer *Object, error_code &EC)
> - : ObjectFile(Binary::ID_COFF, Object), COFFHeader(0), PE32Header(0),
> - DataDirectory(0), SectionTable(0), SymbolTable(0), StringTable(0),
> - StringTableSize(0), ImportDirectory(0), NumberOfImportDirectory(0),
> - ExportDirectory(0) {
> +COFFObjectFile::COFFObjectFile(MemoryBuffer *Object, error_code &EC,
> + bool BufferOwned)
> + : ObjectFile(Binary::ID_COFF, Object, BufferOwned), COFFHeader(0),
> + PE32Header(0), DataDirectory(0), SectionTable(0), SymbolTable(0),
> + StringTable(0), StringTableSize(0), ImportDirectory(0),
> + NumberOfImportDirectory(0), ExportDirectory(0) {
> // Check that we at least have enough room for a header.
> if (!checkSize(Data, EC, sizeof(coff_file_header))) return;
>
> @@ -1015,9 +1016,10 @@ error_code ExportDirectoryEntryRef::getS
> return object_error::success;
> }
>
> -ErrorOr<ObjectFile *> ObjectFile::createCOFFObjectFile(MemoryBuffer *Object) {
> +ErrorOr<ObjectFile *> ObjectFile::createCOFFObjectFile(MemoryBuffer *Object,
> + bool BufferOwned) {
> error_code EC;
> - OwningPtr<COFFObjectFile> Ret(new COFFObjectFile(Object, EC));
> + OwningPtr<COFFObjectFile> Ret(new COFFObjectFile(Object, EC, BufferOwned));
> if (EC)
> return EC;
> return Ret.take();
>
> Modified: llvm/trunk/lib/Object/ELFObjectFile.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Object/ELFObjectFile.cpp?rev=200040&r1=200039&r2=200040&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Object/ELFObjectFile.cpp (original)
> +++ llvm/trunk/lib/Object/ELFObjectFile.cpp Fri Jan 24 15:32:21 2014
> @@ -17,7 +17,8 @@
> namespace llvm {
> using namespace object;
>
> -ErrorOr<ObjectFile *> ObjectFile::createELFObjectFile(MemoryBuffer *Obj) {
> +ErrorOr<ObjectFile *> ObjectFile::createELFObjectFile(MemoryBuffer *Obj,
> + bool BufferOwned) {
> std::pair<unsigned char, unsigned char> Ident = getElfArchType(Obj);
> std::size_t MaxAlignment =
> 1ULL << countTrailingZeros(uintptr_t(Obj->getBufferStart()));
> @@ -27,41 +28,49 @@ ErrorOr<ObjectFile *> ObjectFile::create
> if (Ident.first == ELF::ELFCLASS32 && Ident.second == ELF::ELFDATA2LSB)
> #if !LLVM_IS_UNALIGNED_ACCESS_FAST
> if (MaxAlignment >= 4)
> - R.reset(new ELFObjectFile<ELFType<support::little, 4, false> >(Obj, EC));
> + R.reset(new ELFObjectFile<ELFType<support::little, 4, false> >(
> + Obj, EC, BufferOwned));
> else
> #endif
> if (MaxAlignment >= 2)
> - R.reset(new ELFObjectFile<ELFType<support::little, 2, false> >(Obj, EC));
> + R.reset(new ELFObjectFile<ELFType<support::little, 2, false> >(
> + Obj, EC, BufferOwned));
> else
> llvm_unreachable("Invalid alignment for ELF file!");
> else if (Ident.first == ELF::ELFCLASS32 && Ident.second == ELF::ELFDATA2MSB)
> #if !LLVM_IS_UNALIGNED_ACCESS_FAST
> if (MaxAlignment >= 4)
> - R.reset(new ELFObjectFile<ELFType<support::big, 4, false> >(Obj, EC));
> + R.reset(new ELFObjectFile<ELFType<support::big, 4, false> >(Obj, EC,
> + BufferOwned));
> else
> #endif
> if (MaxAlignment >= 2)
> - R.reset(new ELFObjectFile<ELFType<support::big, 2, false> >(Obj, EC));
> + R.reset(new ELFObjectFile<ELFType<support::big, 2, false> >(Obj, EC,
> + BufferOwned));
> else
> llvm_unreachable("Invalid alignment for ELF file!");
> else if (Ident.first == ELF::ELFCLASS64 && Ident.second == ELF::ELFDATA2MSB)
> #if !LLVM_IS_UNALIGNED_ACCESS_FAST
> if (MaxAlignment >= 8)
> - R.reset(new ELFObjectFile<ELFType<support::big, 8, true> >(Obj, EC));
> + R.reset(new ELFObjectFile<ELFType<support::big, 8, true> >(Obj, EC,
> + BufferOwned));
> else
> #endif
> if (MaxAlignment >= 2)
> - R.reset(new ELFObjectFile<ELFType<support::big, 2, true> >(Obj, EC));
> + R.reset(new ELFObjectFile<ELFType<support::big, 2, true> >(Obj, EC,
> + BufferOwned));
> else
> llvm_unreachable("Invalid alignment for ELF file!");
> else if (Ident.first == ELF::ELFCLASS64 && Ident.second == ELF::ELFDATA2LSB) {
> #if !LLVM_IS_UNALIGNED_ACCESS_FAST
> if (MaxAlignment >= 8)
> - R.reset(new ELFObjectFile<ELFType<support::little, 8, true> >(Obj, EC));
> + R.reset(new ELFObjectFile<ELFType<support::little, 8, true> >(
> + Obj, EC, BufferOwned));
> else
> #endif
> if (MaxAlignment >= 2)
> - R.reset(new ELFObjectFile<ELFType<support::little, 2, true> >(Obj, EC));
> + R.reset(new ELFObjectFile<ELFType<support::little, 2, true> >(
> + Obj, EC, BufferOwned));
> else
> llvm_unreachable("Invalid alignment for ELF file!");
> }
>
> Modified: llvm/trunk/lib/Object/MachOObjectFile.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Object/MachOObjectFile.cpp?rev=200040&r1=200039&r2=200040&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Object/MachOObjectFile.cpp (original)
> +++ llvm/trunk/lib/Object/MachOObjectFile.cpp Fri Jan 24 15:32:21 2014
> @@ -419,10 +419,10 @@ static uint32_t getSectionFlags(const Ma
> return Sect.flags;
> }
>
> -MachOObjectFile::MachOObjectFile(MemoryBuffer *Object,
> - bool IsLittleEndian, bool Is64bits,
> - error_code &ec)
> - : ObjectFile(getMachOType(IsLittleEndian, Is64bits), Object),
> +MachOObjectFile::MachOObjectFile(MemoryBuffer *Object, bool IsLittleEndian,
> + bool Is64bits, error_code &EC,
> + bool BufferOwned)
> + : ObjectFile(getMachOType(IsLittleEndian, Is64bits), Object, BufferOwned),
> SymtabLoadCmd(NULL), DysymtabLoadCmd(NULL), DataInCodeLoadCmd(NULL) {
> uint32_t LoadCommandCount = this->getHeader().ncmds;
> MachO::LoadCommandType SegmentLoadType = is64Bit() ?
> @@ -1582,18 +1582,19 @@ void MachOObjectFile::ReadULEB128s(uint6
> }
> }
>
> -ErrorOr<ObjectFile *> ObjectFile::createMachOObjectFile(MemoryBuffer *Buffer) {
> +ErrorOr<ObjectFile *> ObjectFile::createMachOObjectFile(MemoryBuffer *Buffer,
> + bool BufferOwned) {
> StringRef Magic = Buffer->getBuffer().slice(0, 4);
> error_code EC;
> OwningPtr<MachOObjectFile> Ret;
> if (Magic == "\xFE\xED\xFA\xCE")
> - Ret.reset(new MachOObjectFile(Buffer, false, false, EC));
> + Ret.reset(new MachOObjectFile(Buffer, false, false, EC, BufferOwned));
> else if (Magic == "\xCE\xFA\xED\xFE")
> - Ret.reset(new MachOObjectFile(Buffer, true, false, EC));
> + Ret.reset(new MachOObjectFile(Buffer, true, false, EC, BufferOwned));
> else if (Magic == "\xFE\xED\xFA\xCF")
> - Ret.reset(new MachOObjectFile(Buffer, false, true, EC));
> + Ret.reset(new MachOObjectFile(Buffer, false, true, EC, BufferOwned));
> else if (Magic == "\xCF\xFA\xED\xFE")
> - Ret.reset(new MachOObjectFile(Buffer, true, true, EC));
> + Ret.reset(new MachOObjectFile(Buffer, true, true, EC, BufferOwned));
> else {
> delete Buffer;
> return object_error::parse_failed;
>
> Modified: llvm/trunk/lib/Object/ObjectFile.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Object/ObjectFile.cpp?rev=200040&r1=200039&r2=200040&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Object/ObjectFile.cpp (original)
> +++ llvm/trunk/lib/Object/ObjectFile.cpp Fri Jan 24 15:32:21 2014
> @@ -23,9 +23,9 @@ using namespace object;
>
> void ObjectFile::anchor() { }
>
> -ObjectFile::ObjectFile(unsigned int Type, MemoryBuffer *source)
> - : Binary(Type, source) {
> -}
> +ObjectFile::ObjectFile(unsigned int Type, MemoryBuffer *Source,
> + bool BufferOwned)
> + : Binary(Type, Source, BufferOwned) {}
>
> error_code ObjectFile::getSymbolAlignment(DataRefImpl DRI,
> uint32_t &Result) const {
> @@ -38,8 +38,8 @@ section_iterator ObjectFile::getRelocate
> }
>
> ErrorOr<ObjectFile *> ObjectFile::createObjectFile(MemoryBuffer *Object,
> + bool BufferOwned,
> sys::fs::file_magic Type) {
> - OwningPtr<MemoryBuffer> ScopedObj(Object);
> if (Type == sys::fs::file_magic::unknown)
> Type = sys::fs::identify_magic(Object->getBuffer());
>
> @@ -49,12 +49,14 @@ ErrorOr<ObjectFile *> ObjectFile::create
> case sys::fs::file_magic::archive:
> case sys::fs::file_magic::macho_universal_binary:
> case sys::fs::file_magic::windows_resource:
> + if (BufferOwned)
> + delete Object;
> return object_error::invalid_file_type;
> case sys::fs::file_magic::elf_relocatable:
> case sys::fs::file_magic::elf_executable:
> case sys::fs::file_magic::elf_shared_object:
> case sys::fs::file_magic::elf_core:
> - return createELFObjectFile(ScopedObj.take());
> + return createELFObjectFile(Object, BufferOwned);
> case sys::fs::file_magic::macho_object:
> case sys::fs::file_magic::macho_executable:
> case sys::fs::file_magic::macho_fixed_virtual_memory_shared_lib:
> @@ -65,11 +67,11 @@ ErrorOr<ObjectFile *> ObjectFile::create
> case sys::fs::file_magic::macho_bundle:
> case sys::fs::file_magic::macho_dynamically_linked_shared_lib_stub:
> case sys::fs::file_magic::macho_dsym_companion:
> - return createMachOObjectFile(ScopedObj.take());
> + return createMachOObjectFile(Object, BufferOwned);
> case sys::fs::file_magic::coff_object:
> case sys::fs::file_magic::coff_import_library:
> case sys::fs::file_magic::pecoff_executable:
> - return createCOFFObjectFile(ScopedObj.take());
> + return createCOFFObjectFile(Object, BufferOwned);
> }
> llvm_unreachable("Unexpected Object File Type");
> }
>
> Modified: llvm/trunk/tools/llvm-ar/llvm-ar.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-ar/llvm-ar.cpp?rev=200040&r1=200039&r2=200040&view=diff
> ==============================================================================
> --- llvm/trunk/tools/llvm-ar/llvm-ar.cpp (original)
> +++ llvm/trunk/tools/llvm-ar/llvm-ar.cpp Fri Jan 24 15:32:21 2014
> @@ -692,6 +692,7 @@ static void writeStringTable(raw_fd_ostr
>
> static void writeSymbolTable(
> raw_fd_ostream &Out, ArrayRef<NewArchiveIterator> Members,
> + ArrayRef<OwningPtr<MemoryBuffer> > Buffers,
> std::vector<std::pair<unsigned, unsigned> > &MemberOffsetRefs) {
> unsigned StartOffset = 0;
> unsigned MemberNum = 0;
> @@ -700,36 +701,13 @@ static void writeSymbolTable(
> for (ArrayRef<NewArchiveIterator>::iterator I = Members.begin(),
> E = Members.end();
> I != E; ++I, ++MemberNum) {
> - object::ObjectFile *Obj;
> - if (I->isNewMember()) {
> - const char *Filename = I->getNew();
> - int FD = I->getFD();
> - const sys::fs::file_status &Status = I->getStatus();
> -
> - OwningPtr<MemoryBuffer> File;
> - failIfError(MemoryBuffer::getOpenFile(FD, Filename, File,
> - Status.getSize(), false),
> - Filename);
> + const OwningPtr<MemoryBuffer> &MemberBuffer = Buffers[MemberNum];
> + ErrorOr<object::ObjectFile *> ObjOrErr =
> + object::ObjectFile::createObjectFile(MemberBuffer.get(), false);
> + if (!ObjOrErr)
> + continue; // FIXME: check only for "not an object file" errors.
> + object::ObjectFile *Obj = ObjOrErr.get();
>
> - if (ErrorOr<object::ObjectFile *> ObjOrErr =
> - object::ObjectFile::createObjectFile(File.take()))
> - Obj = ObjOrErr.get();
> - else
> - Obj = NULL;
> - } else {
> - object::Archive::child_iterator OldMember = I->getOld();
> - OwningPtr<object::Binary> Binary;
> - error_code EC = OldMember->getAsBinary(Binary);
> - if (EC) { // FIXME: check only for "not an object file" errors.
> - Obj = NULL;
> - } else {
> - Obj = dyn_cast<object::ObjectFile>(Binary.get());
> - if (Obj)
> - Binary.take();
> - }
> - }
> - if (!Obj)
> - continue;
> DeleteIt.push_back(Obj);
> if (!StartOffset) {
> printMemberHeader(Out, "", sys::TimeValue::now(), 0, 0, 0, 0);
> @@ -800,8 +778,29 @@ static void performWriteOperation(Archiv
>
> std::vector<std::pair<unsigned, unsigned> > MemberOffsetRefs;
>
> + std::vector<OwningPtr<MemoryBuffer> > MemberBuffers;
> + MemberBuffers.resize(NewMembers.size());
> +
> + for (unsigned I = 0, N = NewMembers.size(); I < N; ++I) {
> + OwningPtr<MemoryBuffer> &MemberBuffer = MemberBuffers[I];
> + NewArchiveIterator &Member = NewMembers[I];
> +
> + if (Member.isNewMember()) {
> + const char *Filename = Member.getNew();
> + int FD = Member.getFD();
> + const sys::fs::file_status &Status = Member.getStatus();
> + failIfError(MemoryBuffer::getOpenFile(FD, Filename, MemberBuffer,
> + Status.getSize(), false),
> + Filename);
> +
> + } else {
> + object::Archive::child_iterator OldMember = Member.getOld();
> + failIfError(OldMember->getMemoryBuffer(MemberBuffer));
> + }
> + }
> +
> if (Symtab) {
> - writeSymbolTable(Out, NewMembers, MemberOffsetRefs);
> + writeSymbolTable(Out, NewMembers, MemberBuffers, MemberOffsetRefs);
> }
>
> std::vector<unsigned> StringMapIndexes;
> @@ -825,16 +824,11 @@ static void performWriteOperation(Archiv
> }
> Out.seek(Pos);
>
> + const OwningPtr<MemoryBuffer> &File = MemberBuffers[MemberNum];
> if (I->isNewMember()) {
> const char *FileName = I->getNew();
> - int FD = I->getFD();
> const sys::fs::file_status &Status = I->getStatus();
>
> - OwningPtr<MemoryBuffer> File;
> - failIfError(MemoryBuffer::getOpenFile(FD, FileName, File,
> - Status.getSize(), false),
> - FileName);
> -
> StringRef Name = sys::path::filename(FileName);
> if (Name.size() < 16)
> printMemberHeader(Out, Name, Status.getLastModificationTime(),
> @@ -845,7 +839,6 @@ static void performWriteOperation(Archiv
> Status.getLastModificationTime(), Status.getUser(),
> Status.getGroup(), Status.permissions(),
> Status.getSize());
> - Out << File->getBuffer();
> } else {
> object::Archive::child_iterator OldMember = I->getOld();
> StringRef Name = I->getName();
> @@ -859,9 +852,10 @@ static void performWriteOperation(Archiv
> OldMember->getLastModified(), OldMember->getUID(),
> OldMember->getGID(), OldMember->getAccessMode(),
> OldMember->getSize());
> - Out << OldMember->getBuffer();
> }
>
> + Out << File->getBuffer();
> +
> if (Out.tell() % 2)
> Out << '\n';
> }
>
>
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