GDBRemoteCommunicationReplayServer.h revision 360784 
1//===-- GDBRemoteCommunicationReplayServer.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_GDBRemoteCommunicationReplayServer_h_
10#define liblldb_GDBRemoteCommunicationReplayServer_h_
11
12// Other libraries and framework includes
13#include "GDBRemoteCommunication.h"
14#include "GDBRemoteCommunicationHistory.h"
15
16// Project includes
17#include "lldb/Host/HostThread.h"
18#include "lldb/Utility/Broadcaster.h"
19#include "lldb/lldb-private-forward.h"
20#include "llvm/Support/Error.h"
21
22// C Includes
23// C++ Includes
24#include <functional>
25#include <map>
26#include <thread>
27
28class StringExtractorGDBRemote;
29
30namespace lldb_private {
31namespace process_gdb_remote {
32
33class ProcessGDBRemote;
34
35/// Dummy GDB server that replays packets from the GDB Remote Communication
36/// history. This is used to replay GDB packets.
37class GDBRemoteCommunicationReplayServer : public GDBRemoteCommunication {
38public:
39  GDBRemoteCommunicationReplayServer();
40
41  ~GDBRemoteCommunicationReplayServer() override;
42
43  PacketResult GetPacketAndSendResponse(Timeout<std::micro> timeout,
44                                        Status &error, bool &interrupt,
45                                        bool &quit);
46
47  bool HandshakeWithClient() { return GetAck() == PacketResult::Success; }
48
49  llvm::Error LoadReplayHistory(const FileSpec &path);
50
51  bool StartAsyncThread();
52  void StopAsyncThread();
53
54protected:
55  enum {
56    eBroadcastBitAsyncContinue = (1 << 0),
57    eBroadcastBitAsyncThreadShouldExit = (1 << 1),
58  };
59
60  static void ReceivePacket(GDBRemoteCommunicationReplayServer &server,
61                            bool &done);
62  static lldb::thread_result_t AsyncThread(void *arg);
63
64  /// Replay history with the oldest packet at the end.
65  std::vector<GDBRemotePacket> m_packet_history;
66
67  /// Server thread.
68  Broadcaster m_async_broadcaster;
69  lldb::ListenerSP m_async_listener_sp;
70  HostThread m_async_thread;
71  std::recursive_mutex m_async_thread_state_mutex;
72
73  bool m_skip_acks;
74
75private:
76  DISALLOW_COPY_AND_ASSIGN(GDBRemoteCommunicationReplayServer);
77};
78
79} // namespace process_gdb_remote
80} // namespace lldb_private
81
82#endif // liblldb_GDBRemoteCommunicationReplayServer_h_
83