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//===-- NativeThreadLinux.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_NativeThreadLinux_H_
#define liblldb_NativeThreadLinux_H_
#include "Plugins/Process/Linux/NativeRegisterContextLinux.h"
#include "Plugins/Process/Linux/SingleStepCheck.h"
#include "lldb/Host/common/NativeThreadProtocol.h"
#include "lldb/lldb-private-forward.h"
#include <csignal>
#include <map>
#include <memory>
#include <string>
namespace lldb_private {
namespace process_linux {
class NativeProcessLinux;
class NativeThreadLinux : public NativeThreadProtocol {
friend class NativeProcessLinux;
public:
NativeThreadLinux(NativeProcessLinux &process, lldb::tid_t tid);
// NativeThreadProtocol Interface
std::string GetName() override;
lldb::StateType GetState() override;
bool GetStopReason(ThreadStopInfo &stop_info,
std::string &description) override;
NativeRegisterContextLinux &GetRegisterContext() override {
return *m_reg_context_up;
}
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;
private:
// Interface for friend classes
/// Resumes the thread. If \p signo is anything but
/// LLDB_INVALID_SIGNAL_NUMBER, deliver that signal to the thread.
Status Resume(uint32_t signo);
/// Single steps the thread. If \p signo is anything but
/// LLDB_INVALID_SIGNAL_NUMBER, deliver that signal to the thread.
Status SingleStep(uint32_t signo);
void SetStoppedBySignal(uint32_t signo, const siginfo_t *info = nullptr);
/// Return true if the thread is stopped.
/// If stopped by a signal, indicate the signo in the signo argument.
/// Otherwise, return LLDB_INVALID_SIGNAL_NUMBER.
bool IsStopped(int *signo);
void SetStoppedByExec();
void SetStoppedByBreakpoint();
void SetStoppedByWatchpoint(uint32_t wp_index);
bool IsStoppedAtBreakpoint();
bool IsStoppedAtWatchpoint();
void SetStoppedByTrace();
void SetStoppedWithNoReason();
void SetExited();
Status RequestStop();
// Private interface
void MaybeLogStateChange(lldb::StateType new_state);
NativeProcessLinux &GetProcess();
void SetStopped();
// Member Variables
lldb::StateType m_state;
ThreadStopInfo m_stop_info;
std::unique_ptr<NativeRegisterContextLinux> 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;
std::unique_ptr<SingleStepWorkaround> m_step_workaround;
};
} // namespace process_linux
} // namespace lldb_private
#endif // #ifndef liblldb_NativeThreadLinux_H_
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