//===-- FileCache.h ---------------------------------------------*- C++ -*-===//

//

// 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

//

//===----------------------------------------------------------------------===//

#ifndef LLDB_HOST_FILECACHE_H

#define LLDB_HOST_FILECACHE_H

#include <cstdint>

#include <map>

#include "lldb/lldb-forward.h"

#include "lldb/lldb-types.h"

#include "lldb/Host/File.h"

#include "lldb/Utility/FileSpec.h"

#include "lldb/Utility/Status.h"

namespace lldb_private {

class FileCache {

private:

  FileCache() = default;

  typedef std::map<lldb::user_id_t, lldb::FileUP> FDToFileMap;

public:

  static FileCache &GetInstance();

  lldb::user_id_t OpenFile(const FileSpec &file_spec, File::OpenOptions flags,

                           uint32_t mode, Status &error);

  bool CloseFile(lldb::user_id_t fd, Status &error);

  uint64_t WriteFile(lldb::user_id_t fd, uint64_t offset, const void *src,

                     uint64_t src_len, Status &error);

  uint64_t ReadFile(lldb::user_id_t fd, uint64_t offset, void *dst,

                    uint64_t dst_len, Status &error);

private:

  static FileCache *m_instance;

  FDToFileMap m_cache;

};

}

#endif