//
//===----------------------------------------------------------------------===//
+#include "llvm/Support/Errc.h"
#include "llvm/Support/FileOutputBuffer.h"
#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/STLExtras.h"
#include "llvm/Support/raw_ostream.h"
#include <system_error>
using llvm::sys::fs::mapped_file_region;
namespace llvm {
-FileOutputBuffer::FileOutputBuffer(mapped_file_region * R,
+FileOutputBuffer::FileOutputBuffer(std::unique_ptr<mapped_file_region> R,
StringRef Path, StringRef TmpPath)
- : Region(R)
- , FinalPath(Path)
- , TempPath(TmpPath) {
-}
+ : Region(std::move(R)), FinalPath(Path), TempPath(TmpPath) {}
FileOutputBuffer::~FileOutputBuffer() {
sys::fs::remove(Twine(TempPath));
}
-error_code FileOutputBuffer::create(StringRef FilePath,
- size_t Size,
- std::unique_ptr<FileOutputBuffer> &Result,
- unsigned Flags) {
+std::error_code
+FileOutputBuffer::create(StringRef FilePath, size_t Size,
+ std::unique_ptr<FileOutputBuffer> &Result,
+ unsigned Flags) {
// If file already exists, it must be a regular file (to be mappable).
sys::fs::file_status Stat;
- error_code EC = sys::fs::status(FilePath, Stat);
+ std::error_code EC = sys::fs::status(FilePath, Stat);
switch (Stat.type()) {
case sys::fs::file_type::file_not_found:
// If file does not exist, we'll create one.
if (EC)
return EC;
else
- return std::make_error_code(std::errc::operation_not_permitted);
+ return make_error_code(errc::operation_not_permitted);
}
// Delete target file.
if (EC)
return EC;
- std::unique_ptr<mapped_file_region> MappedFile(new mapped_file_region(
- FD, true, mapped_file_region::readwrite, Size, 0, EC));
+ auto MappedFile = llvm::make_unique<mapped_file_region>(
+ FD, true, mapped_file_region::readwrite, Size, 0, EC);
if (EC)
return EC;
- Result.reset(new FileOutputBuffer(MappedFile.get(), FilePath, TempFilePath));
- if (Result)
- MappedFile.release();
+ Result.reset(
+ new FileOutputBuffer(std::move(MappedFile), FilePath, TempFilePath));
- return error_code();
+ return std::error_code();
}
-error_code FileOutputBuffer::commit(int64_t NewSmallerSize) {
+std::error_code FileOutputBuffer::commit(int64_t NewSmallerSize) {
// Unmap buffer, letting OS flush dirty pages to file on disk.
- Region.reset(nullptr);
+ Region.reset();
// If requested, resize file as part of commit.
if ( NewSmallerSize != -1 ) {
- error_code EC = sys::fs::resize_file(Twine(TempPath), NewSmallerSize);
+ std::error_code EC = sys::fs::resize_file(Twine(TempPath), NewSmallerSize);
if (EC)
return EC;
}