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//===-- NativeThreadLinux.h ----------------------------------- -*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef liblldb_NativeThreadLinux_H_
#define liblldb_NativeThreadLinux_H_
#include "lldb/Host/common/NativeThreadProtocol.h"
#include "lldb/lldb-private-forward.h"
#include <sched.h>
#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;
NativeRegisterContextSP GetRegisterContext() override;
Error SetWatchpoint(lldb::addr_t addr, size_t size, uint32_t watch_flags,
bool hardware) override;
Error RemoveWatchpoint(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.
Error Resume(uint32_t signo);
/// Single steps the thread. If @p signo is anything but
/// LLDB_INVALID_SIGNAL_NUMBER, deliver that signal to the thread.
Error 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();
Error RequestStop();
// ---------------------------------------------------------------------
// Private interface
// ---------------------------------------------------------------------
void MaybeLogStateChange(lldb::StateType new_state);
NativeProcessLinux &GetProcess();
void SetStopped();
inline void MaybePrepareSingleStepWorkaround();
inline void MaybeCleanupSingleStepWorkaround();
// ---------------------------------------------------------------------
// Member Variables
// ---------------------------------------------------------------------
lldb::StateType m_state;
ThreadStopInfo m_stop_info;
NativeRegisterContextSP m_reg_context_sp;
std::string m_stop_description;
using WatchpointIndexMap = std::map<lldb::addr_t, uint32_t>;
WatchpointIndexMap m_watchpoint_index_map;
cpu_set_t m_original_cpu_set; // For single-step workaround.
};
typedef std::shared_ptr<NativeThreadLinux> NativeThreadLinuxSP;
} // namespace process_linux
} // namespace lldb_private
#endif // #ifndef liblldb_NativeThreadLinux_H_
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