1 //===-- ConnectionGenericFileWindows.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 
9 #ifndef liblldb_Host_windows_ConnectionGenericFileWindows_h_
10 #define liblldb_Host_windows_ConnectionGenericFileWindows_h_
11 
12 #include "lldb/Host/windows/windows.h"
13 #include "lldb/Utility/Connection.h"
14 #include "lldb/lldb-types.h"
15 
16 namespace lldb_private {
17 
18 class Status;
19 
20 class ConnectionGenericFile : public lldb_private::Connection {
21 public:
22   ConnectionGenericFile();
23 
24   ConnectionGenericFile(lldb::file_t file, bool owns_file);
25 
26   ~ConnectionGenericFile() override;
27 
28   bool IsConnected() const override;
29 
30   lldb::ConnectionStatus Connect(llvm::StringRef s, Status *error_ptr) override;
31 
32   lldb::ConnectionStatus Disconnect(Status *error_ptr) override;
33 
34   size_t Read(void *dst, size_t dst_len, const Timeout<std::micro> &timeout,
35               lldb::ConnectionStatus &status, Status *error_ptr) override;
36 
37   size_t Write(const void *src, size_t src_len, lldb::ConnectionStatus &status,
38                Status *error_ptr) override;
39 
40   std::string GetURI() override;
41 
42   bool InterruptRead() override;
43 
44 protected:
45   OVERLAPPED m_overlapped;
46   HANDLE m_file;
47   HANDLE m_event_handles[2];
48   bool m_owns_file;
49   LARGE_INTEGER m_file_position;
50 
51   enum { kBytesAvailableEvent, kInterruptEvent };
52 
53 private:
54   void InitializeEventHandles();
55   void IncrementFilePointer(DWORD amount);
56 
57   std::string m_uri;
58 
59   ConnectionGenericFile(const ConnectionGenericFile &) = delete;
60   const ConnectionGenericFile &
61   operator=(const ConnectionGenericFile &) = delete;
62 };
63 }
64 
65 #endif
66