lldb_private::Watchpoint Class Reference

#include <Watchpoint.h>

Inheritance diagram for lldb_private::Watchpoint:

Collaboration diagram for lldb_private::Watchpoint:

Classes
class	WatchpointEventData

Public Member Functions
	Watchpoint (Target &target, lldb::addr_t addr, uint32_t size, const CompilerType *type, bool hardware=true)
	~Watchpoint () override
void	IncrementFalseAlarmsAndReviseHitCount ()
bool	IsEnabled () const
void	SetEnabled (bool enabled, bool notify=true)
bool	IsHardware () const override
bool	ShouldStop (StoppointCallbackContext *context) override
bool	WatchpointRead () const
bool	WatchpointWrite () const
uint32_t	GetIgnoreCount () const
void	SetIgnoreCount (uint32_t n)
void	SetWatchpointType (uint32_t type, bool notify=true)
void	SetDeclInfo (const std::string &str)
std::string	GetWatchSpec ()
void	SetWatchSpec (const std::string &str)
bool	IsWatchVariable () const
void	SetWatchVariable (bool val)
bool	CaptureWatchedValue (const ExecutionContext &exe_ctx)
void	GetDescription (Stream *s, lldb::DescriptionLevel level)
void	Dump (Stream *s) const override
void	DumpSnapshots (Stream *s, const char *prefix=nullptr) const
void	DumpWithLevel (Stream *s, lldb::DescriptionLevel description_level) const
Target &	GetTarget ()
const Status &	GetError ()
WatchpointOptions *	GetOptions ()
	Returns the WatchpointOptions structure set for this watchpoint.
void	SetCallback (WatchpointHitCallback callback, void *callback_baton, bool is_synchronous=false)
	Set the callback action invoked when the watchpoint is hit.
void	SetCallback (WatchpointHitCallback callback, const lldb::BatonSP &callback_baton_sp, bool is_synchronous=false)
void	ClearCallback ()
bool	InvokeCallback (StoppointCallbackContext *context)
	Invoke the callback action when the watchpoint is hit.
void	SetCondition (const char *condition)
	Set the watchpoint's condition.
const char *	GetConditionText () const
	Return a pointer to the text of the condition expression.
void	TurnOnEphemeralMode ()
void	TurnOffEphemeralMode ()
bool	IsDisabledDuringEphemeralMode ()
const CompilerType &	GetCompilerType ()
Public Member Functions inherited from lldb_private::StoppointSite
	StoppointSite (lldb::break_id_t bid, lldb::addr_t m_addr, bool hardware)
	StoppointSite (lldb::break_id_t bid, lldb::addr_t m_addr, uint32_t byte_size, bool hardware)
virtual	~StoppointSite ()=default
virtual lldb::addr_t	GetLoadAddress () const
virtual void	SetLoadAddress (lldb::addr_t addr)
uint32_t	GetByteSize () const
uint32_t	GetHitCount () const
void	ResetHitCount ()
bool	HardwareRequired () const
virtual bool	IsHardware () const =0
uint32_t	GetHardwareIndex () const
void	SetHardwareIndex (uint32_t index)
virtual bool	ShouldStop (StoppointCallbackContext *context)=0
virtual void	Dump (Stream *stream) const =0
lldb::break_id_t	GetID () const

Private Member Functions
void	ResetHistoricValues ()
void	UndoHitCount ()
void	SetID (lldb::watch_id_t id)
void	SendWatchpointChangedEvent (lldb::WatchpointEventType eventKind)
void	SendWatchpointChangedEvent (WatchpointEventData *data)
	Watchpoint (const Watchpoint &)=delete
const Watchpoint &	operator= (const Watchpoint &)=delete

Private Attributes
Target &	m_target
bool	m_enabled
bool	m_is_hardware
bool	m_is_watch_variable
bool	m_is_ephemeral
uint32_t	m_disabled_count
uint32_t	m_watch_read: 1
uint32_t	m_watch_write: 1
uint32_t	m_watch_was_read: 1
uint32_t	m_watch_was_written: 1
uint32_t	m_ignore_count
uint32_t	m_false_alarms
std::string	m_decl_str
std::string	m_watch_spec_str
lldb::ValueObjectSP	m_old_value_sp
lldb::ValueObjectSP	m_new_value_sp
CompilerType	m_type
Status	m_error
WatchpointOptions	m_options
bool	m_being_created
std::unique_ptr< UserExpression >	m_condition_up

Friends
class	Target
class	WatchpointList
class	StopInfoWatchpoint

Additional Inherited Members
Protected Attributes inherited from lldb_private::StoppointSite
lldb::break_id_t	m_id
	Stoppoint site ID.
lldb::addr_t	m_addr
	The load address of this stop point.
bool	m_is_hardware_required
	True if this point is required to use hardware (which may fail due to the lack of resources).
uint32_t	m_hardware_index
	The hardware resource index for this breakpoint/watchpoint.
uint32_t	m_byte_size
	The size in bytes of stoppoint, e.g.
StoppointHitCounter	m_hit_counter
	Number of times this breakpoint/watchpoint has been hit.

Detailed Description

Definition at line 24 of file Watchpoint.h.

Constructor & Destructor Documentation

Watchpoint() [1/2]

Watchpoint::Watchpoint	(	Target &	target,
		lldb::addr_t	addr,
		uint32_t	size,
		const CompilerType *	type,
		bool	hardware = true
	)

Definition at line 27 of file Watchpoint.cpp.

References CaptureWatchedValue(), lldb::eEncodingUint, lldb::eLanguageTypeC, lldb_private::GetLog(), lldb_private::Target::GetProcessSP(), lldb_private::Target::GetScratchTypeSystemForLanguage(), lldb_private::CompilerType::IsValid(), LLDB_LOG_ERROR, m_being_created, m_target, m_type, and lldb_private::Watchpoints.

~Watchpoint()

Watchpoint::~Watchpoint ( )

overridedefault

Watchpoint() [2/2]

lldb_private::Watchpoint::Watchpoint ( const Watchpoint &  )

privatedelete

Member Function Documentation

CaptureWatchedValue()

bool Watchpoint::CaptureWatchedValue

(

const ExecutionContext &

exe_ctx

)

Definition at line 108 of file Watchpoint.cpp.

References lldb_private::ValueObjectMemory::Create(), lldb_private::ExecutionContext::GetBestExecutionContextScope(), lldb_private::StoppointSite::GetLoadAddress(), lldb_private::ConstString::GetStringRef(), lldb_private::CompilerType::IsValid(), m_new_value_sp, m_old_value_sp, and m_type.

Referenced by Watchpoint().

ClearCallback()

void Watchpoint::ClearCallback

(

)

Definition at line 86 of file Watchpoint.cpp.

References lldb_private::WatchpointOptions::ClearCallback(), m_options, and SendWatchpointChangedEvent().

Referenced by CommandObjectWatchpointCommandDelete::DoExecute().

Dump()

void Watchpoint::Dump ( Stream *  s ) const

overridevirtual

Implements lldb_private::StoppointSite.

Definition at line 153 of file Watchpoint.cpp.

References DumpWithLevel(), and lldb::eDescriptionLevelBrief.

DumpSnapshots()

void Watchpoint::DumpSnapshots	(	Stream *	s,
		const char *	prefix = nullptr
	)		const

Definition at line 159 of file Watchpoint.cpp.

References lldb_private::StoppointSite::GetID(), m_new_value_sp, m_old_value_sp, and lldb_private::Stream::Printf().

Referenced by DumpWithLevel().

DumpWithLevel()

void Watchpoint::DumpWithLevel	(	Stream *	s,
		lldb::DescriptionLevel	description_level
	)		const

Definition at line 188 of file Watchpoint.cpp.

References DumpSnapshots(), lldb::eDescriptionLevelBrief, lldb::eDescriptionLevelFull, lldb::eDescriptionLevelVerbose, lldb_private::WatchpointOptions::GetCallbackDescription(), GetConditionText(), lldb_private::StoppointSite::GetHardwareIndex(), lldb_private::StoppointSite::GetHitCount(), lldb_private::StoppointSite::GetID(), GetIgnoreCount(), lldb_private::StoppointSite::GetLoadAddress(), IsEnabled(), lldb_private::StoppointSite::m_byte_size, m_decl_str, m_options, m_watch_read, m_watch_spec_str, m_watch_write, and lldb_private::Stream::Printf().

Referenced by Dump(), and GetDescription().

GetCompilerType()

const CompilerType & lldb_private::Watchpoint::GetCompilerType ( )

inline

Definition at line 155 of file Watchpoint.h.

References m_type.

GetConditionText()

const char * Watchpoint::GetConditionText

(

)

const

Return a pointer to the text of the condition expression.

Returns

A pointer to the condition expression text, or nullptr if no

Definition at line 305 of file Watchpoint.cpp.

References m_condition_up.

Referenced by DumpWithLevel().

GetDescription()

void Watchpoint::GetDescription	(	Stream *	s,
		lldb::DescriptionLevel	level
	)

Definition at line 149 of file Watchpoint.cpp.

References DumpWithLevel().

Referenced by AddWatchpointDescription().

GetError()

const Status & lldb_private::Watchpoint::GetError ( )

inline

Definition at line 98 of file Watchpoint.h.

References m_error.

GetIgnoreCount()

uint32_t Watchpoint::GetIgnoreCount

(

)

const

Definition at line 273 of file Watchpoint.cpp.

References m_ignore_count.

Referenced by DumpWithLevel().

GetOptions()

WatchpointOptions * lldb_private::Watchpoint::GetOptions ( )

inline

Returns the WatchpointOptions structure set for this watchpoint.

Returns

A pointer to this watchpoint's WatchpointOptions.

Definition at line 104 of file Watchpoint.h.

References m_options.

Referenced by CommandObjectWatchpointCommandList::DoExecute().

GetTarget()

Target & lldb_private::Watchpoint::GetTarget ( )

inline

Definition at line 97 of file Watchpoint.h.

References m_target.

Referenced by SendWatchpointChangedEvent().

GetWatchSpec()

std::string Watchpoint::GetWatchSpec

(

)

Definition at line 93 of file Watchpoint.cpp.

References m_watch_spec_str.

IncrementFalseAlarmsAndReviseHitCount()

void Watchpoint::IncrementFalseAlarmsAndReviseHitCount

(

)

Definition at line 127 of file Watchpoint.cpp.

References lldb_private::StoppointHitCounter::Decrement(), lldb_private::StoppointHitCounter::GetValue(), m_false_alarms, lldb_private::StoppointSite::m_hit_counter, and lldb_private::StoppointHitCounter::Reset().

InvokeCallback()

bool Watchpoint::InvokeCallback

(

StoppointCallbackContext *

context

)

Invoke the callback action when the watchpoint is hit.

Parameters

[in]

context

Described the watchpoint event.

Returns

true if the target should stop at this watchpoint and false not.

Definition at line 282 of file Watchpoint.cpp.

References lldb_private::StoppointSite::GetID(), lldb_private::WatchpointOptions::InvokeCallback(), and m_options.

IsDisabledDuringEphemeralMode()

bool Watchpoint::IsDisabledDuringEphemeralMode

(

)

Definition at line 237 of file Watchpoint.cpp.

References m_disabled_count, and m_is_ephemeral.

IsEnabled()

bool Watchpoint::IsEnabled

(

)

const

Definition at line 222 of file Watchpoint.cpp.

References m_enabled.

Referenced by lldb_private::process_gdb_remote::ProcessGDBRemote::DisableWatchpoint(), lldb_private::ProcessWindows::DisableWatchpoint(), DumpWithLevel(), lldb_private::process_gdb_remote::ProcessGDBRemote::EnableWatchpoint(), lldb_private::ProcessWindows::EnableWatchpoint(), and ShouldStop().

IsHardware()

bool Watchpoint::IsHardware ( ) const

overridevirtual

Implements lldb_private::StoppointSite.

Definition at line 99 of file Watchpoint.cpp.

References lldb_private::StoppointSite::HardwareRequired(), lldbassert, and m_is_hardware.

Referenced by lldb_private::process_gdb_remote::ProcessGDBRemote::DisableWatchpoint().

IsWatchVariable()

bool Watchpoint::IsWatchVariable

(

)

const

Definition at line 104 of file Watchpoint.cpp.

References m_is_watch_variable.

operator=()

const Watchpoint & lldb_private::Watchpoint::operator= ( const Watchpoint &  )

privatedelete

ResetHistoricValues()

void lldb_private::Watchpoint::ResetHistoricValues ( )

inlineprivate

Definition at line 162 of file Watchpoint.h.

References m_new_value_sp, and m_old_value_sp.

SendWatchpointChangedEvent() [1/2]

void Watchpoint::SendWatchpointChangedEvent ( lldb::WatchpointEventType  eventKind )

private

Definition at line 312 of file Watchpoint.cpp.

References lldb_private::Broadcaster::BroadcastEvent(), lldb_private::Target::eBroadcastBitWatchpointChanged, GetTarget(), and m_being_created.

Referenced by ClearCallback(), SetCallback(), SetCondition(), SetEnabled(), SetIgnoreCount(), and SetWatchpointType().

SendWatchpointChangedEvent() [2/2]

void Watchpoint::SendWatchpointChangedEvent ( WatchpointEventData *  data )

private

Definition at line 323 of file Watchpoint.cpp.

References lldb_private::Broadcaster::BroadcastEvent(), lldb_private::Target::eBroadcastBitWatchpointChanged, GetTarget(), and m_being_created.

SetCallback() [1/2]

void lldb_private::Watchpoint::SetCallback	(	WatchpointHitCallback	callback,
		const lldb::BatonSP &	callback_baton_sp,
		bool	is_synchronous = false
	)

SetCallback() [2/2]

void Watchpoint::SetCallback	(	WatchpointHitCallback	callback,
		void *	callback_baton,
		bool	is_synchronous = false
	)

Set the callback action invoked when the watchpoint is hit.

Parameters

[in]	callback	The method that will get called when the watchpoint is hit.
[in]	callback_baton	A void * pointer that will get passed back to the callback function.
[in]	is_synchronous	If true the callback will be run on the private event thread before the stop event gets reported. If false, the callback will get handled on the public event thread after the stop has been posted.

Definition at line 67 of file Watchpoint.cpp.

References m_options, SendWatchpointChangedEvent(), and lldb_private::WatchpointOptions::SetCallback().

SetCondition()

void Watchpoint::SetCondition

(

const char *

condition

)

Set the watchpoint's condition.

Parameters

[in]

condition

The condition expression to evaluate when the watchpoint is hit. Pass in nullptr to clear the condition.

Definition at line 286 of file Watchpoint.cpp.

References lldb::eLanguageTypeUnknown, lldb_private::Expression::eResultTypeAny, error(), lldb_private::Target::GetUserExpressionForLanguage(), m_condition_up, m_target, and SendWatchpointChangedEvent().

SetDeclInfo()

void Watchpoint::SetDeclInfo

(

const std::string &

str

)

Definition at line 91 of file Watchpoint.cpp.

References m_decl_str.

SetEnabled()

void Watchpoint::SetEnabled	(	bool	enabled,
		bool	notify = true
	)

Definition at line 241 of file Watchpoint.cpp.

References LLDB_INVALID_INDEX32, m_disabled_count, m_enabled, m_is_ephemeral, SendWatchpointChangedEvent(), and lldb_private::StoppointSite::SetHardwareIndex().

Referenced by lldb_private::process_gdb_remote::ProcessGDBRemote::DisableWatchpoint(), lldb_private::ProcessWindows::DisableWatchpoint(), lldb_private::process_gdb_remote::ProcessGDBRemote::EnableWatchpoint(), and lldb_private::ProcessWindows::EnableWatchpoint().

SetID()

void lldb_private::Watchpoint::SetID ( lldb::watch_id_t  id )

inlineprivate

Definition at line 203 of file Watchpoint.h.

References lldb_private::StoppointSite::m_id.

SetIgnoreCount()

void Watchpoint::SetIgnoreCount

(

uint32_t

n

)

Definition at line 275 of file Watchpoint.cpp.

References m_ignore_count, and SendWatchpointChangedEvent().

SetWatchpointType()

void Watchpoint::SetWatchpointType	(	uint32_t	type,
		bool	notify = true
	)

Definition at line 259 of file Watchpoint.cpp.

References LLDB_WATCH_TYPE_READ, LLDB_WATCH_TYPE_WRITE, m_watch_read, m_watch_write, and SendWatchpointChangedEvent().

SetWatchSpec()

void Watchpoint::SetWatchSpec

(

const std::string &

str

)

Definition at line 95 of file Watchpoint.cpp.

References m_watch_spec_str.

SetWatchVariable()

void Watchpoint::SetWatchVariable

(

bool

val

)

Definition at line 106 of file Watchpoint.cpp.

References m_is_watch_variable.

ShouldStop()

bool Watchpoint::ShouldStop ( StoppointCallbackContext *  context )

overridevirtual

Implements lldb_private::StoppointSite.

Definition at line 143 of file Watchpoint.cpp.

References lldb_private::StoppointHitCounter::Increment(), IsEnabled(), and lldb_private::StoppointSite::m_hit_counter.

TurnOffEphemeralMode()

void Watchpoint::TurnOffEphemeralMode

(

)

Definition at line 231 of file Watchpoint.cpp.

References m_disabled_count, and m_is_ephemeral.

TurnOnEphemeralMode()

void Watchpoint::TurnOnEphemeralMode

(

)

Definition at line 229 of file Watchpoint.cpp.

References m_is_ephemeral.

UndoHitCount()

void lldb_private::Watchpoint::UndoHitCount ( )

inlineprivate

Definition at line 167 of file Watchpoint.h.

References lldb_private::StoppointHitCounter::Decrement(), and lldb_private::StoppointSite::m_hit_counter.

WatchpointRead()

bool Watchpoint::WatchpointRead

(

)

const

Definition at line 269 of file Watchpoint.cpp.

References m_watch_read.

Referenced by lldb_private::ProcessWindows::EnableWatchpoint(), and GetGDBStoppointType().

WatchpointWrite()

bool Watchpoint::WatchpointWrite

(

)

const

Definition at line 271 of file Watchpoint.cpp.

References m_watch_write.

Referenced by lldb_private::ProcessWindows::EnableWatchpoint(), and GetGDBStoppointType().

Friends And Related Function Documentation

StopInfoWatchpoint

friend class StopInfoWatchpoint

friend

Definition at line 160 of file Watchpoint.h.

Target

friend class Target

friend

Definition at line 158 of file Watchpoint.h.

WatchpointList

friend class WatchpointList

friend

Definition at line 159 of file Watchpoint.h.

Member Data Documentation

m_being_created

bool lldb_private::Watchpoint::m_being_created

private

Definition at line 199 of file Watchpoint.h.

Referenced by SendWatchpointChangedEvent(), and Watchpoint().

m_condition_up

std::unique_ptr<UserExpression> lldb_private::Watchpoint::m_condition_up

private

Definition at line 201 of file Watchpoint.h.

Referenced by GetConditionText(), and SetCondition().

m_decl_str

std::string lldb_private::Watchpoint::m_decl_str

private

Definition at line 189 of file Watchpoint.h.

Referenced by DumpWithLevel(), and SetDeclInfo().

m_disabled_count

uint32_t lldb_private::Watchpoint::m_disabled_count

private

Definition at line 177 of file Watchpoint.h.

Referenced by IsDisabledDuringEphemeralMode(), SetEnabled(), and TurnOffEphemeralMode().

m_enabled

bool lldb_private::Watchpoint::m_enabled

private

Definition at line 170 of file Watchpoint.h.

Referenced by IsEnabled(), and SetEnabled().

m_error

Status lldb_private::Watchpoint::m_error

private

Definition at line 194 of file Watchpoint.h.

Referenced by GetError().

m_false_alarms

uint32_t lldb_private::Watchpoint::m_false_alarms

private

Definition at line 188 of file Watchpoint.h.

Referenced by IncrementFalseAlarmsAndReviseHitCount().

m_ignore_count

uint32_t lldb_private::Watchpoint::m_ignore_count

private

Definition at line 187 of file Watchpoint.h.

Referenced by GetIgnoreCount(), and SetIgnoreCount().

m_is_ephemeral

bool lldb_private::Watchpoint::m_is_ephemeral

private

Definition at line 173 of file Watchpoint.h.

Referenced by IsDisabledDuringEphemeralMode(), SetEnabled(), TurnOffEphemeralMode(), and TurnOnEphemeralMode().

m_is_hardware

bool lldb_private::Watchpoint::m_is_hardware

private

Definition at line 171 of file Watchpoint.h.

Referenced by IsHardware().

m_is_watch_variable

bool lldb_private::Watchpoint::m_is_watch_variable

private

Definition at line 172 of file Watchpoint.h.

Referenced by IsWatchVariable(), and SetWatchVariable().

m_new_value_sp

lldb::ValueObjectSP lldb_private::Watchpoint::m_new_value_sp

private

Definition at line 192 of file Watchpoint.h.

Referenced by CaptureWatchedValue(), DumpSnapshots(), and ResetHistoricValues().

m_old_value_sp

lldb::ValueObjectSP lldb_private::Watchpoint::m_old_value_sp

private

Definition at line 191 of file Watchpoint.h.

Referenced by CaptureWatchedValue(), DumpSnapshots(), and ResetHistoricValues().

m_options

WatchpointOptions lldb_private::Watchpoint::m_options

private

Definition at line 197 of file Watchpoint.h.

Referenced by ClearCallback(), DumpWithLevel(), GetOptions(), InvokeCallback(), and SetCallback().

m_target

Target& lldb_private::Watchpoint::m_target

private

Definition at line 169 of file Watchpoint.h.

Referenced by GetTarget(), SetCondition(), and Watchpoint().

m_type

CompilerType lldb_private::Watchpoint::m_type

private

Definition at line 193 of file Watchpoint.h.

Referenced by CaptureWatchedValue(), GetCompilerType(), and Watchpoint().

m_watch_read

uint32_t lldb_private::Watchpoint::m_watch_read

private

Definition at line 182 of file Watchpoint.h.

Referenced by DumpWithLevel(), SetWatchpointType(), and WatchpointRead().

m_watch_spec_str

std::string lldb_private::Watchpoint::m_watch_spec_str

private

Definition at line 190 of file Watchpoint.h.

Referenced by DumpWithLevel(), GetWatchSpec(), and SetWatchSpec().

m_watch_was_read

uint32_t lldb_private::Watchpoint::m_watch_was_read

private

Definition at line 184 of file Watchpoint.h.

m_watch_was_written

uint32_t lldb_private::Watchpoint::m_watch_was_written

private

Definition at line 185 of file Watchpoint.h.

m_watch_write

uint32_t lldb_private::Watchpoint::m_watch_write

private

Definition at line 183 of file Watchpoint.h.

Referenced by DumpWithLevel(), SetWatchpointType(), and WatchpointWrite().

---

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

• Watchpoint.h
• Watchpoint.cpp