1 //===--- DataBufferLLVM.cpp -------------------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "lldb/Utility/DataBufferLLVM.h"
12 #include "llvm/ADT/Twine.h"
13 #include "llvm/Support/FileSystem.h"
14 #include "llvm/Support/MemoryBuffer.h"
16 #include <assert.h> // for assert
17 #include <type_traits> // for move
19 using namespace lldb_private;
21 DataBufferLLVM::DataBufferLLVM(std::unique_ptr<llvm::MemoryBuffer> MemBuffer)
22 : Buffer(std::move(MemBuffer)) {
23 assert(Buffer != nullptr &&
24 "Cannot construct a DataBufferLLVM with a null buffer");
27 DataBufferLLVM::~DataBufferLLVM() {}
29 std::shared_ptr<DataBufferLLVM>
30 DataBufferLLVM::CreateSliceFromPath(const llvm::Twine &Path, uint64_t Size,
31 uint64_t Offset, bool Private) {
32 // If the file resides non-locally, pass the volatile flag so that we don't
35 Private = !llvm::sys::fs::is_local(Path);
37 auto Buffer = llvm::MemoryBuffer::getFileSlice(Path, Size, Offset, Private);
40 return std::shared_ptr<DataBufferLLVM>(
41 new DataBufferLLVM(std::move(*Buffer)));
44 std::shared_ptr<DataBufferLLVM>
45 DataBufferLLVM::CreateFromPath(const llvm::Twine &Path, bool NullTerminate, bool Private) {
46 // If the file resides non-locally, pass the volatile flag so that we don't
49 Private = !llvm::sys::fs::is_local(Path);
51 auto Buffer = llvm::MemoryBuffer::getFile(Path, -1, NullTerminate, Private);
54 return std::shared_ptr<DataBufferLLVM>(
55 new DataBufferLLVM(std::move(*Buffer)));
58 uint8_t *DataBufferLLVM::GetBytes() {
59 return const_cast<uint8_t *>(GetBuffer());
62 const uint8_t *DataBufferLLVM::GetBytes() const { return GetBuffer(); }
64 lldb::offset_t DataBufferLLVM::GetByteSize() const {
65 return Buffer->getBufferSize();
68 const uint8_t *DataBufferLLVM::GetBuffer() const {
69 return reinterpret_cast<const uint8_t *>(Buffer->getBufferStart());