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FileCache.h
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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:
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);
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:
42 
43  FDToFileMap m_cache;
44 };
45 }
46 
47 #endif
uint64_t WriteFile(lldb::user_id_t fd, uint64_t offset, const void *src, uint64_t src_len, Status &error)
Definition: FileCache.cpp:63
lldb::user_id_t OpenFile(const FileSpec &file_spec, File::OpenOptions flags, uint32_t mode, Status &error)
Definition: FileCache.cpp:26
A class that represents a running process on the host machine.
A file utility class.
Definition: FileSpec.h:56
FDToFileMap m_cache
Definition: FileCache.h:43
uint64_t ReadFile(lldb::user_id_t fd, uint64_t offset, void *dst, uint64_t dst_len, Status &error)
Definition: FileCache.cpp:90
uint64_t user_id_t
Definition: lldb-types.h:84
static llvm::raw_ostream & error(Stream &strm)
std::map< lldb::user_id_t, lldb::FileUP > FDToFileMap
Definition: FileCache.h:26
static FileCache & GetInstance()
Definition: FileCache.cpp:19
static FileCache * m_instance
Definition: FileCache.h:41
bool CloseFile(lldb::user_id_t fd, Status &error)
Definition: FileCache.cpp:43
An error handling class.
Definition: Status.h:44