FileCache.h revision 360784 
1//===-- FileCache.h ---------------------------------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8#ifndef liblldb_Host_FileCache_h
9#define liblldb_Host_FileCache_h
10
11#include <map>
12#include <stdint.h>
13
14#include "lldb/lldb-forward.h"
15#include "lldb/lldb-types.h"
16
17#include "lldb/Host/File.h"
18#include "lldb/Utility/FileSpec.h"
19#include "lldb/Utility/Status.h"
20
21namespace lldb_private {
22class FileCache {
23private:
24  FileCache() {}
25
26  typedef std::map<lldb::user_id_t, lldb::FileUP> FDToFileMap;
27
28public:
29  static FileCache &GetInstance();
30
31  lldb::user_id_t OpenFile(const FileSpec &file_spec, File::OpenOptions flags,
32                           uint32_t mode, Status &error);
33  bool CloseFile(lldb::user_id_t fd, Status &error);
34
35  uint64_t WriteFile(lldb::user_id_t fd, uint64_t offset, const void *src,
36                     uint64_t src_len, Status &error);
37  uint64_t ReadFile(lldb::user_id_t fd, uint64_t offset, void *dst,
38                    uint64_t dst_len, Status &error);
39
40private:
41  static FileCache *m_instance;
42
43  FDToFileMap m_cache;
44};
45}
46
47#endif
48