llvm/clang/lib/Basic/FileSystemStatCache.cpp

//===- FileSystemStatCache.cpp - Caching for 'stat' calls -----------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
//  This file defines the FileSystemStatCache interface.
//
//===----------------------------------------------------------------------===//

#include "clang/Basic/FileSystemStatCache.h"
#include "llvm/Support/Chrono.h"
#include "llvm/Support/ErrorOr.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/VirtualFileSystem.h"
#include <utility>

usingnamespaceclang;

void FileSystemStatCache::anchor() { … }

/// FileSystemStatCache::get - Get the 'stat' information for the specified
/// path, using the cache to accelerate it if possible.  This returns true if
/// the path does not exist or false if it exists.
///
/// If isFile is true, then this lookup should only return success for files
/// (not directories).  If it is false this lookup should only return
/// success for directories (not files).  On a successful file lookup, the
/// implementation can optionally fill in FileDescriptor with a valid
/// descriptor and the client guarantees that it will close it.
std::error_code
FileSystemStatCache::get(StringRef Path, llvm::vfs::Status &Status,
                         bool isFile, std::unique_ptr<llvm::vfs::File> *F,
                         FileSystemStatCache *Cache,
                         llvm::vfs::FileSystem &FS) { … }

std::error_code
MemorizeStatCalls::getStat(StringRef Path, llvm::vfs::Status &Status,
                           bool isFile,
                           std::unique_ptr<llvm::vfs::File> *F,
                           llvm::vfs::FileSystem &FS) { … }