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 LLDB_HOST_FILECACHE_H
9 #define LLDB_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 
21 namespace lldb_private {
22 class FileCache {
23 private:
FileCache()24   FileCache() {}
25 
26   typedef std::map<lldb::user_id_t, lldb::FileUP> FDToFileMap;
27 
28 public:
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 
40 private:
41   static FileCache *m_instance;
42 
43   FDToFileMap m_cache;
44 };
45 }
46 
47 #endif
48