lldb_private::BreakpointResolver Class Reference

General Outline: The BreakpointResolver is a Searcher. More...

#include <BreakpointResolver.h>

Inheritance diagram for lldb_private::BreakpointResolver:

Public Types
enum	ResolverTy {   FileLineResolver = 0 , AddressResolver , NameResolver , FileRegexResolver ,   PythonResolver , ExceptionResolver , LastKnownResolverType = ExceptionResolver , UnknownResolver }
	An enumeration for keeping track of the concrete subclass that is actually instantiated. More...
Public Types inherited from lldb_private::Searcher
enum	CallbackReturn { eCallbackReturnStop = 0 , eCallbackReturnContinue , eCallbackReturnPop }

Public Member Functions
	BreakpointResolver (const lldb::BreakpointSP &bkpt, unsigned char resolverType, lldb::addr_t offset=0)
	The breakpoint resolver need to have a breakpoint for "ResolveBreakpoint to make sense.
	~BreakpointResolver () override
	The Destructor is virtual, all significant breakpoint resolvers derive from this class.
void	SetBreakpoint (const lldb::BreakpointSP &bkpt)
	This sets the breakpoint for this resolver.
lldb::BreakpointSP	GetBreakpoint () const
	This gets the breakpoint for this resolver.
void	SetOffset (lldb::addr_t offset)
	This updates the offset for this breakpoint.
lldb::addr_t	GetOffset () const
virtual void	ResolveBreakpoint (SearchFilter &filter)
	In response to this method the resolver scans all the modules in the breakpoint's target, and adds any new locations it finds.
virtual void	ResolveBreakpointInModules (SearchFilter &filter, ModuleList &modules)
	In response to this method the resolver scans the modules in the module list modules, and adds any new locations it finds.
void	GetDescription (Stream *s) override=0
	Prints a canonical description for the breakpoint to the stream s.
virtual void	Dump (Stream *s) const =0
	Standard "Dump" method. At present it does nothing.
virtual StructuredData::ObjectSP	SerializeToStructuredData ()
StructuredData::DictionarySP	WrapOptionsDict (StructuredData::DictionarySP options_dict_sp)
unsigned	getResolverID () const
	getResolverID - Return an ID for the concrete type of this object.
enum ResolverTy	GetResolverTy ()
const char *	GetResolverName ()
virtual lldb::BreakpointResolverSP	CopyForBreakpoint (lldb::BreakpointSP &breakpoint)=0
Public Member Functions inherited from lldb_private::Searcher
	Searcher ()
virtual	~Searcher ()
virtual CallbackReturn	SearchCallback (SearchFilter &filter, SymbolContext &context, Address *addr)=0
virtual lldb::SearchDepth	GetDepth ()=0
virtual void	GetDescription (Stream *s)
	Prints a canonical description for the searcher to the stream s.

Static Public Member Functions
static lldb::BreakpointResolverSP	CreateFromStructuredData (const StructuredData::Dictionary &resolver_dict, Status &error)
	This section handles serializing and deserializing from StructuredData objects.
static const char *	GetSerializationKey ()
static const char *	GetSerializationSubclassKey ()
static const char *	GetSerializationSubclassOptionsKey ()
static const char *	ResolverTyToName (enum ResolverTy)
static ResolverTy	NameToResolverTy (llvm::StringRef name)
static const char *	GetKey (OptionNames enum_value)

Static Public Attributes
static const char *	g_ty_to_name [LastKnownResolverType+2]

Protected Types
enum class	OptionNames : uint32_t {   AddressOffset = 0 , ExactMatch , FileName , Inlines ,   LanguageName , LineNumber , Column , ModuleName ,   NameMaskArray , Offset , PythonClassName , RegexString ,   ScriptArgs , SectionName , SearchDepth , SkipPrologue ,   SymbolNameArray , LastOptionName }

Protected Member Functions
virtual void	NotifyBreakpointSet ()
void	SetSCMatchesByLine (SearchFilter &filter, SymbolContextList &sc_list, bool skip_prologue, llvm::StringRef log_ident, uint32_t line=0, std::optional< uint16_t > column=std::nullopt)
	Takes a symbol context list of matches which supposedly represent the same file and line number in a CU, and find the nearest actual line number that matches, and then filter down the matching addresses to unique entries, and skip the prologue if asked to do so, and then set breakpoint locations in this breakpoint for all the resultant addresses.
void	SetSCMatchesByLine (SearchFilter &, SymbolContextList &, bool, const char *)=delete
lldb::BreakpointLocationSP	AddLocation (Address loc_addr, bool *new_location=nullptr)

Static Protected Attributes
static const char *	g_option_names [static_cast< uint32_t >(OptionNames::LastOptionName)]

Private Member Functions
void	AddLocation (SearchFilter &filter, const SymbolContext &sc, bool skip_prologue, llvm::StringRef log_ident)
	Helper for SetSCMatchesByLine.
	BreakpointResolver (const BreakpointResolver &)=delete
const BreakpointResolver &	operator= (const BreakpointResolver &)=delete

Private Attributes
lldb::BreakpointWP	m_breakpoint
lldb::addr_t	m_offset
const unsigned char	SubclassID

Friends
class	Breakpoint

Detailed Description

General Outline: The BreakpointResolver is a Searcher.

"lldb/Breakpoint/BreakpointResolver.h" This class works with SearchFilter to resolve logical breakpoints to their of concrete breakpoint locations.

In that protocol, the SearchFilter asks the question "At what depth of the symbol context descent do you want your callback to get called?" of the filter. The resolver answers this question (in the GetDepth method) and provides the resolution callback. Each Breakpoint has a BreakpointResolver, and it calls either ResolveBreakpoint or ResolveBreakpointInModules to tell it to look for new breakpoint locations.

Definition at line 36 of file BreakpointResolver.h.

Member Enumeration Documentation

OptionNames

enum class lldb_private::BreakpointResolver::OptionNames : uint32_t

strongprotected

Enumerator
AddressOffset
ExactMatch
FileName
Inlines
LanguageName
LineNumber
Column
ModuleName
NameMaskArray
Offset
PythonClassName
RegexString
ScriptArgs
SectionName
SearchDepth
SkipPrologue
SymbolNameArray
LastOptionName

Definition at line 168 of file BreakpointResolver.h.

ResolverTy

enum lldb_private::BreakpointResolver::ResolverTy

An enumeration for keeping track of the concrete subclass that is actually instantiated.

Values of this enumeration are kept in the BreakpointResolver's SubclassID field. They are used for concrete type identification.

Enumerator
FileLineResolver
AddressResolver
NameResolver
FileRegexResolver
PythonResolver
ExceptionResolver
LastKnownResolverType
UnknownResolver

Definition at line 128 of file BreakpointResolver.h.

Constructor & Destructor Documentation

BreakpointResolver() [1/2]

BreakpointResolver::BreakpointResolver	(	const lldb::BreakpointSP &	bkpt,
		unsigned char	resolverType,
		lldb::addr_t	offset = 0
	)

The breakpoint resolver need to have a breakpoint for "ResolveBreakpoint to make sense.

It can be constructed without a breakpoint, but you have to call SetBreakpoint before ResolveBreakpoint.

Parameters

[in]	bkpt	The breakpoint that owns this resolver.
[in]	resolverType	The concrete breakpoint resolver type for this breakpoint.

Definition at line 66 of file BreakpointResolver.cpp.

~BreakpointResolver()

BreakpointResolver::~BreakpointResolver ( )

overridedefault

The Destructor is virtual, all significant breakpoint resolvers derive from this class.

BreakpointResolver() [2/2]

lldb_private::BreakpointResolver::BreakpointResolver ( const BreakpointResolver &  )

privatedelete

Member Function Documentation

AddLocation() [1/2]

BreakpointLocationSP BreakpointResolver::AddLocation ( Address  loc_addr, bool *  new_location = nullptr  )

protected

Definition at line 366 of file BreakpointResolver.cpp.

References GetBreakpoint(), m_offset, and lldb_private::Address::Slide().

Referenced by AddLocation(), lldb_private::BreakpointResolverAddress::SearchCallback(), lldb_private::BreakpointResolverName::SearchCallback(), and SetSCMatchesByLine().

AddLocation() [2/2]

void BreakpointResolver::AddLocation ( SearchFilter &  filter, const SymbolContext &  sc, bool  skip_prologue, llvm::StringRef  log_ident  )

private

Helper for SetSCMatchesByLine.

Definition at line 304 of file BreakpointResolver.cpp.

References AddLocation(), lldb_private::SearchFilter::AddressPasses(), lldb_private::Breakpoints, lldb_private::Address::CalculateSymbolContextLineEntry(), lldb_private::LineEntry::Compare(), lldb::eDescriptionLevelVerbose, lldb_private::SymbolContext::function, lldb_private::Function::GetAddressRange(), lldb_private::AddressRange::GetBaseAddress(), GetBreakpoint(), lldb_private::StreamString::GetData(), lldb_private::Address::GetFileAddress(), lldb_private::GetLog(), lldb_private::Function::GetPrologueByteSize(), lldb_private::Address::IsValid(), lldb_private::SymbolContext::line_entry, LLDB_LOG, LLDB_LOGF, lldb_private::LineEntry::range, and lldb_private::Address::Slide().

CopyForBreakpoint()

virtual lldb::BreakpointResolverSP lldb_private::BreakpointResolver::CopyForBreakpoint ( lldb::BreakpointSP &  breakpoint )

pure virtual

Implemented in ExceptionBreakpointResolver, lldb_private::BreakpointResolverAddress, lldb_private::BreakpointResolverFileLine, lldb_private::BreakpointResolverFileRegex, lldb_private::BreakpointResolverName, and lldb_private::BreakpointResolverScripted.

CreateFromStructuredData()

BreakpointResolverSP BreakpointResolver::CreateFromStructuredData ( const StructuredData::Dictionary &  resolver_dict, Status &  error  )

static

This section handles serializing and deserializing from StructuredData objects.

Definition at line 73 of file BreakpointResolver.cpp.

References AddressResolver, lldb_private::BreakpointResolverFileLine::CreateFromStructuredData(), lldb_private::BreakpointResolverName::CreateFromStructuredData(), lldb_private::BreakpointResolverAddress::CreateFromStructuredData(), lldb_private::BreakpointResolverFileRegex::CreateFromStructuredData(), lldb_private::BreakpointResolverScripted::CreateFromStructuredData(), error(), ExceptionResolver, FileLineResolver, FileRegexResolver, lldb_private::Status::FromErrorString(), lldb_private::Status::FromErrorStringWithFormatv(), GetKey(), GetSerializationSubclassKey(), GetSerializationSubclassOptionsKey(), lldb_private::StructuredData::Dictionary::GetValueForKeyAsDictionary(), lldb_private::StructuredData::Dictionary::GetValueForKeyAsInteger(), lldb_private::StructuredData::Dictionary::GetValueForKeyAsString(), lldb_private::StructuredData::Object::IsValid(), NameResolver, NameToResolverTy(), Offset, PythonResolver, and UnknownResolver.

Referenced by lldb_private::Breakpoint::CreateFromStructuredData().

Dump()

virtual void lldb_private::BreakpointResolver::Dump ( Stream *  s ) const

pure virtual

Standard "Dump" method. At present it does nothing.

Implemented in lldb_private::BreakpointResolverAddress, lldb_private::BreakpointResolverFileLine, lldb_private::BreakpointResolverFileRegex, lldb_private::BreakpointResolverName, lldb_private::BreakpointResolverScripted, and ExceptionBreakpointResolver.

GetBreakpoint()

lldb::BreakpointSP lldb_private::BreakpointResolver::GetBreakpoint ( ) const

inline

This gets the breakpoint for this resolver.

Definition at line 63 of file BreakpointResolver.h.

References m_breakpoint.

Referenced by AddLocation(), lldb_private::BreakpointResolverFileLine::DeduceSourceMapping(), lldb_private::BreakpointResolverAddress::GetDescription(), lldb_private::BreakpointResolverScripted::GetScriptInterpreter(), lldb_private::BreakpointResolverScripted::NotifyBreakpointSet(), lldb_private::BreakpointResolverAddress::ResolveBreakpoint(), lldb_private::BreakpointResolverAddress::ResolveBreakpointInModules(), lldb_private::BreakpointResolverAddress::SearchCallback(), lldb_private::BreakpointResolverFileLine::SearchCallback(), and lldb_private::BreakpointResolverName::SearchCallback().

GetDescription()

void lldb_private::BreakpointResolver::GetDescription ( Stream *  s )

overridepure virtual

Prints a canonical description for the breakpoint to the stream s.

Parameters

[in]

s

Stream to which the output is copied.

Reimplemented from lldb_private::Searcher.

Implemented in lldb_private::BreakpointResolverAddress, lldb_private::BreakpointResolverFileLine, lldb_private::BreakpointResolverFileRegex, lldb_private::BreakpointResolverName, lldb_private::BreakpointResolverScripted, and ExceptionBreakpointResolver.

GetKey()

static const char * lldb_private::BreakpointResolver::GetKey ( OptionNames  enum_value )

inlinestatic

Definition at line 194 of file BreakpointResolver.h.

References g_option_names.

Referenced by lldb_private::BreakpointResolverFileLine::CreateFromStructuredData(), lldb_private::BreakpointResolverName::CreateFromStructuredData(), lldb_private::BreakpointResolverAddress::CreateFromStructuredData(), lldb_private::BreakpointResolverFileRegex::CreateFromStructuredData(), lldb_private::BreakpointResolverScripted::CreateFromStructuredData(), CreateFromStructuredData(), lldb_private::BreakpointResolverAddress::SerializeToStructuredData(), lldb_private::BreakpointResolverFileLine::SerializeToStructuredData(), lldb_private::BreakpointResolverFileRegex::SerializeToStructuredData(), lldb_private::BreakpointResolverName::SerializeToStructuredData(), lldb_private::BreakpointResolverScripted::SerializeToStructuredData(), and WrapOptionsDict().

GetOffset()

lldb::addr_t lldb_private::BreakpointResolver::GetOffset ( ) const

inline

Definition at line 78 of file BreakpointResolver.h.

References m_offset.

Referenced by lldb_private::BreakpointResolverFileLine::CopyForBreakpoint().

getResolverID()

unsigned lldb_private::BreakpointResolver::getResolverID ( ) const

inline

getResolverID - Return an ID for the concrete type of this object.

This is used to implement the LLVM classof checks. This should not be used for any other purpose, as the values may change as LLDB evolves.

Definition at line 146 of file BreakpointResolver.h.

References SubclassID.

Referenced by lldb_private::BreakpointResolverAddress::classof(), lldb_private::BreakpointResolverFileLine::classof(), lldb_private::BreakpointResolverFileRegex::classof(), lldb_private::BreakpointResolverName::classof(), lldb_private::BreakpointResolverScripted::classof(), and ExceptionBreakpointResolver::classof().

GetResolverName()

const char * lldb_private::BreakpointResolver::GetResolverName ( )

inline

Definition at line 155 of file BreakpointResolver.h.

References GetResolverTy(), and ResolverTyToName().

Referenced by WrapOptionsDict().

GetResolverTy()

enum ResolverTy lldb_private::BreakpointResolver::GetResolverTy ( )

inline

Definition at line 148 of file BreakpointResolver.h.

References LastKnownResolverType, SubclassID, and UnknownResolver.

Referenced by GetResolverName().

GetSerializationKey()

static const char * lldb_private::BreakpointResolver::GetSerializationKey ( )

inlinestatic

Definition at line 115 of file BreakpointResolver.h.

Referenced by lldb_private::Breakpoint::CreateFromStructuredData(), and lldb_private::Breakpoint::SerializeToStructuredData().

GetSerializationSubclassKey()

static const char * lldb_private::BreakpointResolver::GetSerializationSubclassKey ( )

inlinestatic

Definition at line 117 of file BreakpointResolver.h.

Referenced by CreateFromStructuredData(), and WrapOptionsDict().

GetSerializationSubclassOptionsKey()

static const char * lldb_private::BreakpointResolver::GetSerializationSubclassOptionsKey ( )

inlinestatic

Definition at line 119 of file BreakpointResolver.h.

Referenced by CreateFromStructuredData(), and WrapOptionsDict().

NameToResolverTy()

BreakpointResolver::ResolverTy BreakpointResolver::NameToResolverTy ( llvm::StringRef  name )

static

Definition at line 58 of file BreakpointResolver.cpp.

References g_ty_to_name, LastKnownResolverType, and UnknownResolver.

Referenced by CreateFromStructuredData().

NotifyBreakpointSet()

virtual void lldb_private::BreakpointResolver::NotifyBreakpointSet ( )

inlineprotectedvirtual

Reimplemented in lldb_private::BreakpointResolverScripted.

Definition at line 191 of file BreakpointResolver.h.

Referenced by SetBreakpoint().

operator=()

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

privatedelete

ResolveBreakpoint()

void BreakpointResolver::ResolveBreakpoint ( SearchFilter &  filter )

virtual

In response to this method the resolver scans all the modules in the breakpoint's target, and adds any new locations it finds.

Parameters

[in]

filter

The filter that will manage the search for this resolver.

Reimplemented in lldb_private::BreakpointResolverAddress.

Definition at line 180 of file BreakpointResolver.cpp.

References lldb_private::SearchFilter::Search().

Referenced by lldb_private::BreakpointResolverAddress::ResolveBreakpoint().

ResolveBreakpointInModules()

void BreakpointResolver::ResolveBreakpointInModules ( SearchFilter &  filter, ModuleList &  modules  )

virtual

In response to this method the resolver scans the modules in the module list modules, and adds any new locations it finds.

Parameters

[in]

filter

The filter that will manage the search for this resolver.

Reimplemented in lldb_private::BreakpointResolverAddress.

Definition at line 175 of file BreakpointResolver.cpp.

References lldb_private::SearchFilter::SearchInModuleList().

Referenced by lldb_private::BreakpointResolverAddress::ResolveBreakpointInModules().

ResolverTyToName()

const char * BreakpointResolver::ResolverTyToName ( enum ResolverTy  type )

static

Definition at line 50 of file BreakpointResolver.cpp.

References g_ty_to_name, LastKnownResolverType, and UnknownResolver.

Referenced by GetResolverName().

SerializeToStructuredData()

virtual StructuredData::ObjectSP lldb_private::BreakpointResolver::SerializeToStructuredData ( )

inlinevirtual

Reimplemented in lldb_private::BreakpointResolverAddress, lldb_private::BreakpointResolverFileLine, lldb_private::BreakpointResolverFileRegex, lldb_private::BreakpointResolverName, and lldb_private::BreakpointResolverScripted.

Definition at line 111 of file BreakpointResolver.h.

SetBreakpoint()

void BreakpointResolver::SetBreakpoint

(

const lldb::BreakpointSP &

bkpt

)

This sets the breakpoint for this resolver.

Parameters

[in]

bkpt

The breakpoint that owns this resolver.

Definition at line 169 of file BreakpointResolver.cpp.

References m_breakpoint, and NotifyBreakpointSet().

SetOffset()

void BreakpointResolver::SetOffset

(

lldb::addr_t

offset

)

This updates the offset for this breakpoint.

All the locations currently set for this breakpoint will have their offset adjusted when this is called.

Parameters

[in]

offset

The offset to add to all locations.

Definition at line 372 of file BreakpointResolver.cpp.

References m_offset.

SetSCMatchesByLine() [1/2]

void lldb_private::BreakpointResolver::SetSCMatchesByLine ( SearchFilter &  , SymbolContextList &  , bool  , const char *    )

protecteddelete

SetSCMatchesByLine() [2/2]

void BreakpointResolver::SetSCMatchesByLine ( SearchFilter &  filter, SymbolContextList &  sc_list, bool  skip_prologue, llvm::StringRef  log_ident, uint32_t  line = 0, std::optional< uint16_t >  column = std::nullopt  )

protected

Takes a symbol context list of matches which supposedly represent the same file and line number in a CU, and find the nearest actual line number that matches, and then filter down the matching addresses to unique entries, and skip the prologue if asked to do so, and then set breakpoint locations in this breakpoint for all the resultant addresses.

When column is nonzero the line and column args are used to filter the results to find the first breakpoint >= (line, column).

Definition at line 207 of file BreakpointResolver.cpp.

References AddLocation(), lldb_private::SymbolContext::block, lldb_private::Language::FindPlugin(), lldb_private::AddressRange::GetBaseAddress(), lldb_private::Address::GetFileAddress(), lldb_private::Language::GetGlobalLanguageProperties(), lldb_private::Language::IgnoreForLineBreakpoints(), lldb_private::LineEntry::line, lldb_private::SymbolContext::line_entry, lldb_private::LineEntry::range, and UINT32_MAX.

Referenced by lldb_private::BreakpointResolverFileLine::SearchCallback(), and lldb_private::BreakpointResolverFileRegex::SearchCallback().

WrapOptionsDict()

StructuredData::DictionarySP BreakpointResolver::WrapOptionsDict

(

StructuredData::DictionarySP

options_dict_sp

)

Definition at line 154 of file BreakpointResolver.cpp.

References GetKey(), GetResolverName(), GetSerializationSubclassKey(), GetSerializationSubclassOptionsKey(), m_offset, and Offset.

Referenced by lldb_private::BreakpointResolverAddress::SerializeToStructuredData(), lldb_private::BreakpointResolverFileLine::SerializeToStructuredData(), lldb_private::BreakpointResolverFileRegex::SerializeToStructuredData(), lldb_private::BreakpointResolverName::SerializeToStructuredData(), and lldb_private::BreakpointResolverScripted::SerializeToStructuredData().

Friends And Related Function Documentation

Breakpoint

friend class Breakpoint

friend

Definition at line 37 of file BreakpointResolver.h.

Member Data Documentation

g_option_names

const char * BreakpointResolver::g_option_names

staticprotected

Initial value:

= {
    "AddressOffset", "Exact",     "FileName",     "Inlines",     "Language",
    "LineNumber",    "Column",    "ModuleName",   "NameMask",    "Offset",
    "PythonClass",   "Regex",     "ScriptArgs",   "SectionName", "SearchDepth",
    "SkipPrologue",  "SymbolNames"}

Definition at line 189 of file BreakpointResolver.h.

Referenced by GetKey().

g_ty_to_name

const char * BreakpointResolver::g_ty_to_name

static

Initial value:

= {"FileAndLine", "Address",
                                                  "SymbolName",  "SourceRegex",
                                                  "Python",   "Exception",
                                                  "Unknown"}

Definition at line 141 of file BreakpointResolver.h.

Referenced by NameToResolverTy(), and ResolverTyToName().

m_breakpoint

lldb::BreakpointWP lldb_private::BreakpointResolver::m_breakpoint

private

Definition at line 221 of file BreakpointResolver.h.

Referenced by GetBreakpoint(), and SetBreakpoint().

m_offset

lldb::addr_t lldb_private::BreakpointResolver::m_offset

private

Definition at line 222 of file BreakpointResolver.h.

Referenced by AddLocation(), GetOffset(), SetOffset(), and WrapOptionsDict().

SubclassID

const unsigned char lldb_private::BreakpointResolver::SubclassID

private

Definition at line 226 of file BreakpointResolver.h.

Referenced by getResolverID(), and GetResolverTy().

---

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

• BreakpointResolver.h
• BreakpointResolver.cpp