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Make ObjectFile and BitcodeReader always own the MemoryBuffer.

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This allows us to just use a std::unique_ptr to store the pointer to the buffer.
The flip side is that they have to support releasing the buffer back to the
caller.

Overall this looks like a more efficient and less brittle api.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211542 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2014-06-23 21:53:12 +00:00
parent 7e7e89f178
commit 1f659329b6
23 changed files with 117 additions and 154 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
lib/Object/ObjectFile.cpp
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@ -23,9 +23,8 @@ using namespace object;
void ObjectFile::anchor() { }
ObjectFile::ObjectFile(unsigned int Type, MemoryBuffer *Source,
bool BufferOwned)
: SymbolicFile(Type, Source, BufferOwned) {}
ObjectFile::ObjectFile(unsigned int Type, MemoryBuffer *Source)
: SymbolicFile(Type, Source) {}
std::error_code ObjectFile::printSymbolName(raw_ostream &OS,
DataRefImpl Symb) const {
@ -47,7 +46,6 @@ section_iterator ObjectFile::getRelocatedSection(DataRefImpl Sec) const {
}
ErrorOr<ObjectFile *> ObjectFile::createObjectFile(MemoryBuffer *Object,
bool BufferOwned,
sys::fs::file_magic Type) {
if (Type == sys::fs::file_magic::unknown)
Type = sys::fs::identify_magic(Object->getBuffer());
@ -58,14 +56,12 @@ ErrorOr<ObjectFile *> ObjectFile::createObjectFile(MemoryBuffer *Object,
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(Object, BufferOwned);
return createELFObjectFile(Object);
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:
@ -76,11 +72,11 @@ ErrorOr<ObjectFile *> ObjectFile::createObjectFile(MemoryBuffer *Object,
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(Object, BufferOwned);
return createMachOObjectFile(Object);
case sys::fs::file_magic::coff_object:
case sys::fs::file_magic::coff_import_library:
case sys::fs::file_magic::pecoff_executable:
return createCOFFObjectFile(Object, BufferOwned);
return createCOFFObjectFile(Object);
}
llvm_unreachable("Unexpected Object File Type");
}