lldb::SBTrace Class Reference

#include <SBTrace.h>

Public Member Functions
	SBTrace ()
	Default constructor for an invalid Trace object.
SBTraceCursor	CreateNewCursor (SBError &error, SBThread &thread)
	Get a TraceCursor for the given thread's trace.
SBFileSpec	SaveToDisk (SBError &error, const SBFileSpec &bundle_dir, bool compact=false)
	Save the trace to the specified directory, which will be created if needed.
const char *	GetStartConfigurationHelp ()
SBError	Start (const SBStructuredData &configuration)
	Start tracing all current and future threads in a live process using a provided configuration.
SBError	Start (const SBThread &thread, const SBStructuredData &configuration)
	Start tracing a specific thread in a live process using a provided configuration.
SBError	Stop ()
	Stop tracing all threads in a live process.
SBError	Stop (const SBThread &thread)
	Stop tracing a specific thread in a live process regardless of whether the thread was traced explicitly or as part of a "process tracing" operation.
	operator bool () const
bool	IsValid ()

Static Public Member Functions
static SBTrace	LoadTraceFromFile (SBError &error, SBDebugger &debugger, const SBFileSpec &trace_description_file)
	See SBDebugger::LoadTraceFromFile.

Protected Member Functions
	SBTrace (const lldb::TraceSP &trace_sp)

Protected Attributes
lldb::TraceSP	m_opaque_sp
lldb::ProcessWP	m_opaque_wp
	deprecated

Friends
class	SBTarget

Detailed Description

Definition at line 18 of file SBTrace.h.

Constructor & Destructor Documentation

SBTrace() [1/2]

SBTrace::SBTrace

(

)

Default constructor for an invalid Trace object.

Definition at line 25 of file SBTrace.cpp.

References LLDB_INSTRUMENT_VA.

Referenced by LoadTraceFromFile().

SBTrace() [2/2]

SBTrace::SBTrace ( const lldb::TraceSP &  trace_sp )

protected

Definition at line 27 of file SBTrace.cpp.

References LLDB_INSTRUMENT_VA.

Member Function Documentation

CreateNewCursor()

SBTraceCursor SBTrace::CreateNewCursor	(	SBError &	error,
		SBThread &	thread
	)

Get a TraceCursor for the given thread's trace.

Parameters

[out]	error	This will be set with an error in case of failures.
[in]	thread	The thread to get a TraceCursor for.

Returns

A SBTraceCursor. If the thread is not traced or its trace information failed to load, an invalid SBTraceCursor is returned and the error parameter is set.

Definition at line 46 of file SBTrace.cpp.

References error(), lldb::SBThread::get(), LLDB_INSTRUMENT_VA, and m_opaque_sp.

GetStartConfigurationHelp()

const char * SBTrace::GetStartConfigurationHelp

(

)

Returns

A description of the parameters to use for the SBTrace::Start method, or null if the object is invalid.

Definition at line 85 of file SBTrace.cpp.

References lldb_private::ConstString::GetCString(), LLDB_INSTRUMENT_VA, and m_opaque_sp.

IsValid()

bool SBTrace::IsValid

(

)

Definition at line 141 of file SBTrace.cpp.

References LLDB_INSTRUMENT_VA.

LoadTraceFromFile()

SBTrace SBTrace::LoadTraceFromFile ( SBError &  error, SBDebugger &  debugger, const SBFileSpec &  trace_description_file  )

static

See SBDebugger::LoadTraceFromFile.

Definition at line 31 of file SBTrace.cpp.

References error(), LLDB_INSTRUMENT_VA, lldb_private::Trace::LoadPostMortemTraceFromFile(), lldb::SBDebugger::ref(), lldb::SBFileSpec::ref(), SBTrace(), and lldb_private::toString().

Referenced by lldb::SBDebugger::LoadTraceFromFile().

operator bool()

SBTrace::operator bool ( ) const

explicit

Definition at line 146 of file SBTrace.cpp.

References LLDB_INSTRUMENT_VA.

SaveToDisk()

SBFileSpec SBTrace::SaveToDisk	(	SBError &	error,
		const SBFileSpec &	bundle_dir,
		bool	compact = false
	)

Save the trace to the specified directory, which will be created if needed.

This will also create a a file <directory>/trace.json with the main properties of the trace session, along with others files which contain the actual trace data. The trace.json file can be used later as input for the "trace load" command to load the trace in LLDB, or for the method SBDebugger.LoadTraceFromFile().

Parameters

[out]	error	This will be set with an error in case of failures.
[in]	directory	The directory where the trace files will be saved.
[in]	compact	Try not to save to disk information irrelevant to the traced processes. Each trace plug-in implements this in a different fashion.

Returns

A SBFileSpec pointing to the bundle description file.

Definition at line 67 of file SBTrace.cpp.

References error(), LLDB_INSTRUMENT_VA, m_opaque_sp, lldb::SBFileSpec::ref(), and lldb::SBFileSpec::SetFileSpec().

Start() [1/2]

SBError SBTrace::Start

(

const SBStructuredData &

configuration

)

Start tracing all current and future threads in a live process using a provided configuration.

This is referred as "process tracing" in the documentation.

This is equivalent to the command "process trace start".

This operation fails if it is invoked twice in a row without first stopping the process trace with SBTrace::Stop().

If a thread is already being traced explicitly, e.g. with SBTrace::Start(const SBThread &thread, const SBStructuredData &configuration), it is left unaffected by this operation.

Parameters

[in]

configuration

Dictionary object with custom fields for the corresponding trace technology.

Full details for the trace start parameters that can be set can be retrieved by calling SBTrace::GetStartConfigurationHelp().

Returns

An error explaining any failures.

Definition at line 93 of file SBTrace.cpp.

References error(), LLDB_INSTRUMENT_VA, lldb::SBStructuredData::m_impl_up, and m_opaque_sp.

Start() [2/2]

SBError SBTrace::Start	(	const SBThread &	thread,
		const SBStructuredData &	configuration
	)

Start tracing a specific thread in a live process using a provided configuration.

This is referred as "thread tracing" in the documentation.

This is equivalent to the command "thread trace start".

If the thread is already being traced by a "process tracing" operation, e.g. with SBTrace::Start(const SBStructuredData &configuration), this operation fails.

Parameters

[in]

configuration

Dictionary object with custom fields for the corresponding trace technology.

Full details for the trace start parameters that can be set can be retrieved by calling SBTrace::GetStartConfigurationHelp().

Returns

An error explaining any failures.

Definition at line 104 of file SBTrace.cpp.

References error(), LLDB_INSTRUMENT_VA, lldb::SBStructuredData::m_impl_up, and m_opaque_sp.

Stop() [1/2]

SBError SBTrace::Stop

(

)

Stop tracing all threads in a live process.

If a "process tracing" operation is active, e.g. SBTrace::Start(const SBStructuredData &configuration), this effectively prevents future threads from being traced.

This is equivalent to the command "process trace stop".

Returns

An error explaining any failures.

Definition at line 121 of file SBTrace.cpp.

References error(), LLDB_INSTRUMENT_VA, and m_opaque_sp.

Stop() [2/2]

SBError SBTrace::Stop

(

const SBThread &

thread

)

Stop tracing a specific thread in a live process regardless of whether the thread was traced explicitly or as part of a "process tracing" operation.

This is equivalent to the command "thread trace stop".

Returns

An error explaining any failures.

Definition at line 131 of file SBTrace.cpp.

References error(), LLDB_INSTRUMENT_VA, and m_opaque_sp.

Friends And Related Function Documentation

SBTarget

friend class SBTarget

friend

Definition at line 138 of file SBTrace.h.

Member Data Documentation

m_opaque_sp

lldb::TraceSP lldb::SBTrace::m_opaque_sp

protected

Definition at line 142 of file SBTrace.h.

Referenced by CreateNewCursor(), GetStartConfigurationHelp(), SaveToDisk(), Start(), and Stop().

m_opaque_wp

lldb::ProcessWP lldb::SBTrace::m_opaque_wp

protected

deprecated

Definition at line 144 of file SBTrace.h.

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

• SBTrace.h
• SBTrace.cpp