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lldb_private::process_linux::NativeThreadLinux Class Reference

#include <NativeThreadLinux.h>

Inheritance diagram for lldb_private::process_linux::NativeThreadLinux:
[legend]

Public Member Functions

 NativeThreadLinux (NativeProcessLinux &process, lldb::tid_t tid)
std::string GetName () override
lldb::StateType GetState () override
bool GetStopReason (ThreadStopInfo &stop_info, std::string &description) override
NativeRegisterContextLinux & 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
NativeProcessLinux & GetProcess ()
const NativeProcessLinux & GetProcess () const
llvm::Expected< std::unique_ptr< llvm::MemoryBuffer > > GetSiginfo () const override
Public Member Functions inherited from lldb_private::NativeThreadProtocol
 NativeThreadProtocol (NativeProcessProtocol &process, lldb::tid_t tid)
virtual ~NativeThreadProtocol ()=default
lldb::tid_t GetID () const
NativeProcessProtocol & GetProcess ()

Private Types

using WatchpointIndexMap = std::map<lldb::addr_t, uint32_t>

Private Member Functions

Status Resume (uint32_t signo)
 Resumes the thread.
Status SingleStep (uint32_t signo)
 Single steps the thread.
void SetStoppedBySignal (uint32_t signo, const siginfo_t *info=nullptr)
bool IsStopped (int *signo)
 Return true if the thread is stopped.
void SetStoppedByExec ()
void SetStoppedByBreakpoint ()
void SetStoppedByWatchpoint (uint32_t wp_index)
bool IsStoppedAtBreakpoint ()
bool IsStoppedAtWatchpoint ()
void SetStoppedByTrace ()
void SetStoppedByFork (bool is_vfork, lldb::pid_t child_pid)
void SetStoppedByVForkDone ()
void SetStoppedWithNoReason ()
void SetStoppedByProcessorTrace (llvm::StringRef description)
void SetExited ()
Status RequestStop ()
void MaybeLogStateChange (lldb::StateType new_state)
void SetStopped ()
void AnnotateSyncTagCheckFault (lldb::addr_t fault_addr)
 Extend m_stop_description with logical and allocation tag values.

Private Attributes

lldb::StateType m_state
std::unique_ptr< NativeRegisterContextLinux > m_reg_context_up
WatchpointIndexMap m_watchpoint_index_map
WatchpointIndexMap m_hw_break_index_map
std::unique_ptr< SingleStepWorkaround > m_step_workaround

Friends

class NativeProcessLinux

Additional Inherited Members

Protected Member Functions inherited from lldb_private::NativeThreadProtocol
void ClearStopInfo ()
Protected Attributes inherited from lldb_private::NativeThreadProtocol
NativeProcessProtocol & m_process
lldb::tid_t m_tid
ThreadStopInfo m_stop_info = {}
std::string m_stop_description

Detailed Description

Definition at line 29 of file NativeThreadLinux.h.

Member Typedef Documentation

◆ WatchpointIndexMap

using lldb_private::process_linux::NativeThreadLinux::WatchpointIndexMap = std::map<lldb::addr_t, uint32_t>
private

Definition at line 118 of file NativeThreadLinux.h.

Constructor & Destructor Documentation

◆ NativeThreadLinux()

NativeThreadLinux::NativeThreadLinux ( NativeProcessLinux & process,
lldb::tid_t tid )

Definition at line 91 of file NativeThreadLinux.cpp.

References lldb::eStateInvalid, m_reg_context_up, m_state, NativeProcessLinux, and lldb_private::NativeThreadProtocol::NativeThreadProtocol().

Member Function Documentation

◆ AnnotateSyncTagCheckFault()

void NativeThreadLinux::AnnotateSyncTagCheckFault ( lldb::addr_t fault_addr)
private

Extend m_stop_description with logical and allocation tag values.

If there is an error along the way just add the information we were able to get.

Definition at line 303 of file NativeThreadLinux.cpp.

References lldb_private::MemoryTagManagerAArch64MTE::eMTE_allocation, lldb_private::process_linux::NativeRegisterContextLinux::GetMemoryTaggingDetails(), GetProcess(), GetRegisterContext(), lldb_private::NativeThreadProtocol::m_stop_description, lldb_private::process_linux::NativeProcessLinux::ReadMemoryTags(), and lldb_private::Status::Success().

Referenced by SetStoppedBySignal().

◆ GetName()

std::string NativeThreadLinux::GetName ( )
overridevirtual

Implements lldb_private::NativeThreadProtocol.

Definition at line 98 of file NativeThreadLinux.cpp.

References lldb_private::NativeProcessProtocol::GetID(), lldb_private::NativeThreadProtocol::GetID(), GetProcess(), lldb_private::getProcFile(), and NativeProcessLinux.

◆ GetProcess() [1/2]

NativeProcessLinux & NativeThreadLinux::GetProcess ( )

Definition at line 530 of file NativeThreadLinux.cpp.

References lldb_private::NativeThreadProtocol::m_process, and NativeProcessLinux.

Referenced by AnnotateSyncTagCheckFault(), GetName(), GetSiginfo(), RequestStop(), Resume(), and SingleStep().

◆ GetProcess() [2/2]

const NativeProcessLinux & NativeThreadLinux::GetProcess ( ) const

Definition at line 534 of file NativeThreadLinux.cpp.

References lldb_private::NativeThreadProtocol::m_process, and NativeProcessLinux.

◆ GetRegisterContext()

NativeRegisterContextLinux & lldb_private::process_linux::NativeThreadLinux::GetRegisterContext ( )
inlineoverridevirtual

Implements lldb_private::NativeThreadProtocol.

Definition at line 43 of file NativeThreadLinux.h.

References m_reg_context_up.

Referenced by lldb_private::process_linux::NativeProcessLinux::AllocateMemory(), AnnotateSyncTagCheckFault(), lldb_private::process_linux::NativeProcessLinux::DeallocateMemory(), lldb_private::process_linux::NativeProcessLinux::ReadMemoryTags(), SetStopped(), and lldb_private::process_linux::NativeProcessLinux::WriteMemoryTags().

◆ GetSiginfo()

llvm::Expected< std::unique_ptr< llvm::MemoryBuffer > > NativeThreadLinux::GetSiginfo ( ) const
overridevirtual

Reimplemented from lldb_private::NativeThreadProtocol.

Definition at line 539 of file NativeThreadLinux.cpp.

References error(), lldb_private::NativeThreadProtocol::GetID(), GetProcess(), and lldb_private::process_linux::NativeProcessLinux::GetSignalInfo().

◆ GetState()

lldb::StateType NativeThreadLinux::GetState ( )
overridevirtual

Implements lldb_private::NativeThreadProtocol.

Definition at line 107 of file NativeThreadLinux.cpp.

References m_state.

Referenced by IsStoppedAtBreakpoint(), IsStoppedAtWatchpoint(), and lldb_private::process_linux::NativeProcessLinux::MonitorClone().

◆ GetStopReason()

bool NativeThreadLinux::GetStopReason ( ThreadStopInfo & stop_info,
std::string & description )
overridevirtual

Implements lldb_private::NativeThreadProtocol.

Definition at line 109 of file NativeThreadLinux.cpp.

References lldb::eStateAttaching, lldb::eStateConnected, lldb::eStateCrashed, lldb::eStateDetached, lldb::eStateExited, lldb::eStateInvalid, lldb::eStateLaunching, lldb::eStateRunning, lldb::eStateStepping, lldb::eStateStopped, lldb::eStateSuspended, lldb::eStateUnloaded, lldb_private::NativeThreadProtocol::GetID(), lldb_private::GetLog(), LLDB_LOGF, m_state, lldb_private::NativeThreadProtocol::m_stop_description, lldb_private::NativeThreadProtocol::m_stop_info, lldb_private::StateAsCString(), and lldb_private::Thread.

◆ IsStopped()

bool NativeThreadLinux::IsStopped ( int * signo)
private

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.

Definition at line 355 of file NativeThreadLinux.cpp.

References lldb::eStateStopped, lldb::eStopReasonSignal, m_state, lldb_private::NativeThreadProtocol::m_stop_info, and lldb_private::StateIsStoppedState().

◆ IsStoppedAtBreakpoint()

bool NativeThreadLinux::IsStoppedAtBreakpoint ( )
private

Definition at line 428 of file NativeThreadLinux.cpp.

References lldb::eStateStopped, lldb::eStopReasonBreakpoint, GetState(), and lldb_private::NativeThreadProtocol::m_stop_info.

◆ IsStoppedAtWatchpoint()

bool NativeThreadLinux::IsStoppedAtWatchpoint ( )
private

Definition at line 433 of file NativeThreadLinux.cpp.

References lldb::eStateStopped, lldb::eStopReasonWatchpoint, GetState(), and lldb_private::NativeThreadProtocol::m_stop_info.

◆ MaybeLogStateChange()

void NativeThreadLinux::MaybeLogStateChange ( lldb::StateType new_state)
private

Definition at line 515 of file NativeThreadLinux.cpp.

References lldb_private::NativeThreadProtocol::GetID(), lldb_private::GetLog(), LLDB_LOG, lldb_private::NativeThreadProtocol::m_process, m_state, and lldb_private::Thread.

Referenced by Resume(), SetExited(), SetStopped(), and SingleStep().

◆ RemoveHardwareBreakpoint()

Status NativeThreadLinux::RemoveHardwareBreakpoint ( lldb::addr_t addr)
overridevirtual

Implements lldb_private::NativeThreadProtocol.

Definition at line 192 of file NativeThreadLinux.cpp.

References lldb_private::Status::FromErrorString(), m_hw_break_index_map, m_reg_context_up, and lldb_private::Status.

Referenced by SetHardwareBreakpoint().

◆ RemoveWatchpoint()

Status NativeThreadLinux::RemoveWatchpoint ( lldb::addr_t addr)
overridevirtual

Implements lldb_private::NativeThreadProtocol.

Definition at line 163 of file NativeThreadLinux.cpp.

References lldb_private::Status::FromErrorString(), m_reg_context_up, m_watchpoint_index_map, and lldb_private::Status.

Referenced by SetWatchpoint().

◆ RequestStop()

Status NativeThreadLinux::RequestStop ( )
private

Definition at line 489 of file NativeThreadLinux.cpp.

References lldb_private::Status::AsCString(), lldb_private::Status::FromErrno(), lldb_private::NativeProcessProtocol::GetID(), lldb_private::NativeThreadProtocol::GetID(), lldb_private::GetLog(), GetProcess(), LLDB_LOGF, NativeProcessLinux, SIGSTOP, tgkill, and lldb_private::Thread.

Referenced by lldb_private::process_linux::NativeProcessLinux::StopRunningThreads().

◆ Resume()

Status NativeThreadLinux::Resume ( uint32_t signo)
private

Resumes the thread.

If signo is anything but LLDB_INVALID_SIGNAL_NUMBER, deliver that signal to the thread.

Definition at line 206 of file NativeThreadLinux.cpp.

References lldb_private::NativeThreadProtocol::ClearStopInfo(), lldb::eStateRunning, lldb_private::NativeProcessProtocol::GetHardwareBreakpointMap(), lldb_private::NativeThreadProtocol::GetID(), GetProcess(), lldb_private::NativeProcessProtocol::GetWatchpointMap(), LLDB_INVALID_SIGNAL_NUMBER, m_hw_break_index_map, m_reg_context_up, m_state, m_watchpoint_index_map, MaybeLogStateChange(), NativeProcessLinux, lldb_private::process_linux::NativeProcessLinux::PtraceWrapper(), SetHardwareBreakpoint(), and SetWatchpoint().

◆ SetExited()

void NativeThreadLinux::SetExited ( )
private

Definition at line 481 of file NativeThreadLinux.cpp.

References lldb::eStateExited, lldb::eStopReasonThreadExiting, m_state, lldb_private::NativeThreadProtocol::m_stop_info, and MaybeLogStateChange().

◆ SetHardwareBreakpoint()

Status NativeThreadLinux::SetHardwareBreakpoint ( lldb::addr_t addr,
size_t size )
overridevirtual

Implements lldb_private::NativeThreadProtocol.

Definition at line 174 of file NativeThreadLinux.cpp.

References error(), lldb::eStateLaunching, lldb_private::Status::FromErrorString(), LLDB_INVALID_INDEX32, m_hw_break_index_map, m_reg_context_up, m_state, RemoveHardwareBreakpoint(), and lldb_private::Status.

Referenced by Resume().

◆ SetStopped()

void NativeThreadLinux::SetStopped ( )
private

Definition at line 369 of file NativeThreadLinux.cpp.

References lldb::eStateStepping, lldb::eStateStopped, GetRegisterContext(), lldb_private::NativeRegisterContextRegisterInfo::InvalidateAllRegisters(), m_state, m_step_workaround, lldb_private::NativeThreadProtocol::m_stop_description, and MaybeLogStateChange().

Referenced by SetStoppedByBreakpoint(), SetStoppedByExec(), SetStoppedByFork(), SetStoppedByProcessorTrace(), SetStoppedBySignal(), SetStoppedByTrace(), SetStoppedByVForkDone(), SetStoppedByWatchpoint(), and SetStoppedWithNoReason().

◆ SetStoppedByBreakpoint()

void NativeThreadLinux::SetStoppedByBreakpoint ( )
private

Definition at line 392 of file NativeThreadLinux.cpp.

References lldb::eStopReasonBreakpoint, lldb_private::NativeThreadProtocol::m_stop_description, lldb_private::NativeThreadProtocol::m_stop_info, SetStopped(), and SIGTRAP.

◆ SetStoppedByExec()

void NativeThreadLinux::SetStoppedByExec ( )
private

Definition at line 382 of file NativeThreadLinux.cpp.

References lldb::eStopReasonExec, lldb_private::GetLog(), LLDB_LOGF, lldb_private::NativeThreadProtocol::m_stop_info, SetStopped(), SIGSTOP, and lldb_private::Thread.

◆ SetStoppedByFork()

void NativeThreadLinux::SetStoppedByFork ( bool is_vfork,
lldb::pid_t child_pid )
private

Definition at line 445 of file NativeThreadLinux.cpp.

References lldb::eStopReasonFork, lldb::eStopReasonVFork, lldb_private::NativeThreadProtocol::m_stop_description, lldb_private::NativeThreadProtocol::m_stop_info, SetStopped(), and SIGTRAP.

Referenced by lldb_private::process_linux::NativeProcessLinux::MonitorClone().

◆ SetStoppedByProcessorTrace()

void NativeThreadLinux::SetStoppedByProcessorTrace ( llvm::StringRef description)
private

Definition at line 472 of file NativeThreadLinux.cpp.

References lldb::eStopReasonProcessorTrace, lldb_private::NativeThreadProtocol::m_stop_description, lldb_private::NativeThreadProtocol::m_stop_info, and SetStopped().

◆ SetStoppedBySignal()

void NativeThreadLinux::SetStoppedBySignal ( uint32_t signo,
const siginfo_t * info = nullptr )
private

Definition at line 273 of file NativeThreadLinux.cpp.

References AnnotateSyncTagCheckFault(), lldb::eStopReasonSignal, GetCrashReasonString(), lldb_private::GetLog(), LLDB_LOGF, lldb_private::NativeThreadProtocol::m_stop_description, lldb_private::NativeThreadProtocol::m_stop_info, SEGV_MTESERR, SetStopped(), SIGBUS, SIGFPE, SIGILL, SIGSEGV, and lldb_private::Thread.

◆ SetStoppedByTrace()

void NativeThreadLinux::SetStoppedByTrace ( )
private

Definition at line 438 of file NativeThreadLinux.cpp.

References lldb::eStopReasonTrace, lldb_private::NativeThreadProtocol::m_stop_info, SetStopped(), and SIGTRAP.

◆ SetStoppedByVForkDone()

void NativeThreadLinux::SetStoppedByVForkDone ( )
private

Definition at line 458 of file NativeThreadLinux.cpp.

References lldb::eStopReasonVForkDone, lldb_private::NativeThreadProtocol::m_stop_info, SetStopped(), and SIGTRAP.

◆ SetStoppedByWatchpoint()

void NativeThreadLinux::SetStoppedByWatchpoint ( uint32_t wp_index)
private

Definition at line 400 of file NativeThreadLinux.cpp.

References lldb::eStopReasonWatchpoint, LLDB_INVALID_INDEX32, lldbassert, m_reg_context_up, lldb_private::NativeThreadProtocol::m_stop_description, lldb_private::NativeThreadProtocol::m_stop_info, SetStopped(), and SIGTRAP.

◆ SetStoppedWithNoReason()

void NativeThreadLinux::SetStoppedWithNoReason ( )
private

Definition at line 465 of file NativeThreadLinux.cpp.

References lldb::eStopReasonNone, lldb_private::NativeThreadProtocol::m_stop_info, and SetStopped().

◆ SetWatchpoint()

Status NativeThreadLinux::SetWatchpoint ( lldb::addr_t addr,
size_t size,
uint32_t watch_flags,
bool hardware )
overridevirtual

Implements lldb_private::NativeThreadProtocol.

Definition at line 146 of file NativeThreadLinux.cpp.

References error(), lldb::eStateLaunching, lldb_private::Status::FromErrorString(), LLDB_INVALID_INDEX32, m_reg_context_up, m_state, m_watchpoint_index_map, RemoveWatchpoint(), and lldb_private::Status.

Referenced by Resume().

◆ SingleStep()

Status NativeThreadLinux::SingleStep ( uint32_t signo)
private

Single steps the thread.

If signo is anything but LLDB_INVALID_SIGNAL_NUMBER, deliver that signal to the thread.

Definition at line 247 of file NativeThreadLinux.cpp.

References lldb_private::NativeThreadProtocol::ClearStopInfo(), lldb::eStateStepping, lldb_private::process_linux::SingleStepWorkaround::Get(), GetProcess(), LLDB_INVALID_SIGNAL_NUMBER, m_state, m_step_workaround, lldb_private::NativeThreadProtocol::m_tid, MaybeLogStateChange(), and lldb_private::process_linux::NativeProcessLinux::PtraceWrapper().

◆ NativeProcessLinux

friend class NativeProcessLinux
friend

Definition at line 30 of file NativeThreadLinux.h.

References NativeProcessLinux.

Referenced by GetName(), GetProcess(), GetProcess(), NativeProcessLinux, NativeThreadLinux(), RequestStop(), and Resume().

Member Data Documentation

◆ m_hw_break_index_map

WatchpointIndexMap lldb_private::process_linux::NativeThreadLinux::m_hw_break_index_map
private

Definition at line 120 of file NativeThreadLinux.h.

Referenced by RemoveHardwareBreakpoint(), Resume(), and SetHardwareBreakpoint().

◆ m_reg_context_up

std::unique_ptr<NativeRegisterContextLinux> lldb_private::process_linux::NativeThreadLinux::m_reg_context_up
private

Definition at line 117 of file NativeThreadLinux.h.

Referenced by GetRegisterContext(), NativeThreadLinux(), RemoveHardwareBreakpoint(), RemoveWatchpoint(), Resume(), SetHardwareBreakpoint(), SetStoppedByWatchpoint(), and SetWatchpoint().

◆ m_state

lldb::StateType lldb_private::process_linux::NativeThreadLinux::m_state
private

Definition at line 116 of file NativeThreadLinux.h.

Referenced by GetState(), GetStopReason(), IsStopped(), MaybeLogStateChange(), NativeThreadLinux(), Resume(), SetExited(), SetHardwareBreakpoint(), SetStopped(), SetWatchpoint(), and SingleStep().

◆ m_step_workaround

std::unique_ptr<SingleStepWorkaround> lldb_private::process_linux::NativeThreadLinux::m_step_workaround
private

Definition at line 121 of file NativeThreadLinux.h.

Referenced by SetStopped(), and SingleStep().

◆ m_watchpoint_index_map

WatchpointIndexMap lldb_private::process_linux::NativeThreadLinux::m_watchpoint_index_map
private

Definition at line 119 of file NativeThreadLinux.h.

Referenced by RemoveWatchpoint(), Resume(), and SetWatchpoint().

The documentation for this class was generated from the following files:
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