File: GDBRemoteCommunicationServerPlatform.h

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//===-- GDBRemoteCommunicationServerPlatform.h ------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef LLDB_SOURCE_PLUGINS_PROCESS_GDB_REMOTE_GDBREMOTECOMMUNICATIONSERVERPLATFORM_H
#define LLDB_SOURCE_PLUGINS_PROCESS_GDB_REMOTE_GDBREMOTECOMMUNICATIONSERVERPLATFORM_H

#include <map>
#include <mutex>
#include <optional>
#include <set>

#include "GDBRemoteCommunicationServerCommon.h"
#include "lldb/Host/Socket.h"

#include "llvm/Support/Error.h"

namespace lldb_private {
namespace process_gdb_remote {

class GDBRemoteCommunicationServerPlatform
    : public GDBRemoteCommunicationServerCommon {
public:
  GDBRemoteCommunicationServerPlatform(
      const Socket::SocketProtocol socket_protocol, uint16_t gdbserver_port);

  ~GDBRemoteCommunicationServerPlatform() override;

  Status LaunchProcess() override;

  void SetInferiorArguments(const lldb_private::Args &args);

  Status LaunchGDBServer(const lldb_private::Args &args, lldb::pid_t &pid,
                         std::string &socket_name, shared_fd_t fd);

  void SetPendingGdbServer(const std::string &socket_name);

protected:
  const Socket::SocketProtocol m_socket_protocol;
  std::recursive_mutex m_spawned_pids_mutex;
  std::set<lldb::pid_t> m_spawned_pids;

  uint16_t m_gdbserver_port;
  std::optional<std::string> m_pending_gdb_server_socket_name;

  PacketResult Handle_qLaunchGDBServer(StringExtractorGDBRemote &packet);

  PacketResult Handle_qQueryGDBServer(StringExtractorGDBRemote &packet);

  PacketResult Handle_qKillSpawnedProcess(StringExtractorGDBRemote &packet);

  PacketResult Handle_qPathComplete(StringExtractorGDBRemote &packet);

  PacketResult Handle_qProcessInfo(StringExtractorGDBRemote &packet);

  PacketResult Handle_qGetWorkingDir(StringExtractorGDBRemote &packet);

  PacketResult Handle_QSetWorkingDir(StringExtractorGDBRemote &packet);

  PacketResult Handle_qC(StringExtractorGDBRemote &packet);

  PacketResult Handle_jSignalsInfo(StringExtractorGDBRemote &packet);

private:
  bool KillSpawnedProcess(lldb::pid_t pid);
  bool SpawnedProcessIsRunning(lldb::pid_t pid);
  void AddSpawnedProcess(lldb::pid_t pid);

  void DebugserverProcessReaped(lldb::pid_t pid);

  static const FileSpec &GetDomainSocketDir();

  static FileSpec GetDomainSocketPath(const char *prefix);

  GDBRemoteCommunicationServerPlatform(
      const GDBRemoteCommunicationServerPlatform &) = delete;
  const GDBRemoteCommunicationServerPlatform &
  operator=(const GDBRemoteCommunicationServerPlatform &) = delete;
};

} // namespace process_gdb_remote
} // namespace lldb_private

#endif // LLDB_SOURCE_PLUGINS_PROCESS_GDB_REMOTE_GDBREMOTECOMMUNICATIONSERVERPLATFORM_H