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(
22 std::unique_ptr<llvm::WritableMemoryBuffer> MemBuffer)
23 : Buffer(std::move(MemBuffer)) {
24 assert(Buffer != nullptr &&
25 "Cannot construct a DataBufferLLVM with a null buffer");
28 DataBufferLLVM::~DataBufferLLVM() {}
30 std::shared_ptr<DataBufferLLVM>
31 DataBufferLLVM::CreateSliceFromPath(const llvm::Twine &Path, uint64_t Size,
33 // If the file resides non-locally, pass the volatile flag so that we don't
35 bool IsVolatile = !llvm::sys::fs::is_local(Path);
38 llvm::WritableMemoryBuffer::getFileSlice(Path, Size, Offset, IsVolatile);
41 return std::shared_ptr<DataBufferLLVM>(
42 new DataBufferLLVM(std::move(*Buffer)));
45 std::shared_ptr<DataBufferLLVM>
46 DataBufferLLVM::CreateFromPath(const llvm::Twine &Path) {
47 // If the file resides non-locally, pass the volatile flag so that we don't
49 bool IsVolatile = !llvm::sys::fs::is_local(Path);
51 auto Buffer = llvm::WritableMemoryBuffer::getFile(Path, -1, IsVolatile);
54 return std::shared_ptr<DataBufferLLVM>(
55 new DataBufferLLVM(std::move(*Buffer)));
58 uint8_t *DataBufferLLVM::GetBytes() {
59 return reinterpret_cast<uint8_t *>(Buffer->getBufferStart());
62 const uint8_t *DataBufferLLVM::GetBytes() const {
63 return reinterpret_cast<const uint8_t *>(Buffer->getBufferStart());
66 lldb::offset_t DataBufferLLVM::GetByteSize() const {
67 return Buffer->getBufferSize();