NativeThreadFreeBSD.h

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//===-- NativeThreadFreeBSD.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 liblldb_NativeThreadFreeBSD_H_
#define liblldb_NativeThreadFreeBSD_H_
 
#include "lldb/Host/common/NativeThreadProtocol.h"
 
#include "Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD.h"
 
#include <csignal>
#include <map>
#include <string>
 
namespace lldb_private {
namespace process_freebsd {
 
class NativeProcessFreeBSD;
 
class NativeThreadFreeBSD : public NativeThreadProtocol {
  friend class NativeProcessFreeBSD;
 
public:
  NativeThreadFreeBSD(NativeProcessFreeBSD &process, lldb::tid_t tid);
 
  // NativeThreadProtocol Interface
  std::string GetName() override;
 
  lldb::StateType GetState() override;
 
  bool GetStopReason(ThreadStopInfo &stop_info,
                     std::string &description) override;
 
  NativeRegisterContextFreeBSD &GetRegisterContext() override;
 
  Status SetWatchpoint(lldb::addr_t addr, size_t size, uint32_t watch_flags,
                       bool hardware) override;
 
  Status RemoveWatchpoint(lldb::addr_t addr) override;
 
  Status SetHardwareBreakpoint(lldb::addr_t addr, size_t size) override;
 
  Status RemoveHardwareBreakpoint(lldb::addr_t addr) override;
 
  NativeProcessFreeBSD &GetProcess();
 
  llvm::Expected<std::unique_ptr<llvm::MemoryBuffer>>
  GetSiginfo() const override;
 
private:
  // Interface for friend classes
 
  Status Resume();
  Status SingleStep();
  Status Suspend();
 
  void SetStoppedBySignal(uint32_t signo, const siginfo_t *info = nullptr);
  void SetStoppedByBreakpoint();
  void SetStoppedByTrace();
  void SetStoppedByExec();
  void SetStoppedByWatchpoint(uint32_t wp_index);
  void SetStoppedByFork(lldb::pid_t child_pid, lldb::tid_t child_tid);
  void SetStoppedByVFork(lldb::pid_t child_pid, lldb::tid_t child_tid);
  void SetStoppedByVForkDone();
  void SetStoppedWithNoReason();
  void SetStopped();
  void SetRunning();
  void SetStepping();
 
  llvm::Error CopyWatchpointsFrom(NativeThreadFreeBSD &source);
 
  // Member Variables
  lldb::StateType m_state;
  ThreadStopInfo m_stop_info;
  std::unique_ptr<NativeRegisterContextFreeBSD> m_reg_context_up;
  std::string m_stop_description;
  using WatchpointIndexMap = std::map<lldb::addr_t, uint32_t>;
  WatchpointIndexMap m_watchpoint_index_map;
  WatchpointIndexMap m_hw_break_index_map;
};
 
typedef std::shared_ptr<NativeThreadFreeBSD> NativeThreadFreeBSDSP;
} // namespace process_freebsd
} // namespace lldb_private
 
#endif // #ifndef liblldb_NativeThreadFreeBSD_H_