lldb_private::process_linux Namespace Reference

Namespaces
namespace	arm64
namespace	resource_handle

Classes
class	IntelPTCollector
	Main class that manages intel-pt process and thread tracing. More...
class	IntelPTMultiCoreTrace
class	IntelPTPerThreadProcessTrace
	Manages a "process trace" instance by tracing each thread individually. More...
class	IntelPTProcessTrace
	Interface to be implemented by each 'process trace' strategy (per cpu, per thread, etc). More...
class	IntelPTSingleBufferTrace
	This class wraps a single perf event collecting intel pt data in a single buffer. More...
class	IntelPTThreadTraceCollection
	Manages a list of thread traces. More...
class	NativeProcessLinux
	Manages communication with the inferior (debugee) process. More...
class	NativeRegisterContextLinux
class	NativeThreadLinux
class	PerfEvent
	Thin wrapper of the perf_event_open API. More...
class	SingleStepWorkaround

Typedefs
using	IntelPTProcessTraceUP = std::unique_ptr<IntelPTProcessTrace>

Functions
llvm::Expected< uint32_t >	GetIntelPTOSEventType ()
	Return the Linux perf event type for Intel PT.
llvm::Expected< PerfEvent >	CreateContextSwitchTracePerfEvent (lldb::cpu_id_t cpu_id, const PerfEvent *parent_perf_event=nullptr)
	Create a perf event that tracks context switches on a cpu.
llvm::Expected< LinuxPerfZeroTscConversion >	LoadPerfTscConversionParameters ()
	Load PerfTscConversionParameters from perf_event_mmap_page, if available.
llvm::Expected< llvm::ArrayRef< uint8_t > >	GetProcfsCpuInfo ()
llvm::Expected< std::vector< lldb::cpu_id_t > >	GetAvailableLogicalCoreIDs (llvm::StringRef cpuinfo)
llvm::Expected< llvm::ArrayRef< lldb::cpu_id_t > >	GetAvailableLogicalCoreIDs ()
llvm::Expected< int >	GetPtraceScope ()

Typedef Documentation

IntelPTProcessTraceUP

using lldb_private::process_linux::IntelPTProcessTraceUP = std::unique_ptr<IntelPTProcessTrace>

Definition at line 48 of file IntelPTProcessTrace.h.

Function Documentation

CreateContextSwitchTracePerfEvent()

Expected< PerfEvent > lldb_private::process_linux::CreateContextSwitchTracePerfEvent	(	lldb::cpu_id_t	cpu_id,
		const PerfEvent *	parent_perf_event = nullptr )

Create a perf event that tracks context switches on a cpu.

Parameters

[in]	cpu_id	The core to trace.
[in]	parent_perf_event	An optional perf event that will be grouped with the new perf event.

Definition at line 332 of file Perf.cpp.

References createStringError(), lldb_private::process_linux::PerfEvent::GetFd(), lldb_private::GetLog(), lldb_private::process_linux::PerfEvent::Init(), lldb_private::process_linux::PerfEvent::IsEnabled(), LLDB_LOG, and lldb_private::Trace.

Referenced by lldb_private::process_linux::IntelPTMultiCoreTrace::StartOnAllCores().

GetAvailableLogicalCoreIDs() [1/2]

llvm::Expected< llvm::ArrayRef< cpu_id_t > > lldb_private::process_linux::GetAvailableLogicalCoreIDs

(

)

Returns

A list with all the logical cores available in the system and cache it if errors didn't happen.

Definition at line 56 of file Procfs.cpp.

References GetAvailableLogicalCoreIDs(), and GetProcfsCpuInfo().

Referenced by GetAvailableLogicalCoreIDs(), and lldb_private::process_linux::IntelPTMultiCoreTrace::StartOnAllCores().

GetAvailableLogicalCoreIDs() [2/2]

llvm::Expected< std::vector< lldb::cpu_id_t > > lldb_private::process_linux::GetAvailableLogicalCoreIDs

(

llvm::StringRef

cpuinfo

)

Returns

A list of available logical core ids given the contents of /proc/cpuinfo.

GetIntelPTOSEventType()

Expected< uint32_t > lldb_private::process_linux::GetIntelPTOSEventType

(

)

Return the Linux perf event type for Intel PT.

Definition at line 107 of file IntelPTSingleBufferTrace.cpp.

References Decimal, kOSEventIntelPTTypeFile, and ReadIntelPTConfigFile().

Referenced by lldb_private::process_linux::IntelPTCollector::IsSupported().

GetProcfsCpuInfo()

Expected< ArrayRef< uint8_t > > lldb_private::process_linux::GetProcfsCpuInfo

(

)

Returns

The content of /proc/cpuinfo and cache it if errors didn't happen.

Definition at line 22 of file Procfs.cpp.

References lldb_private::getProcFile().

Referenced by GetAvailableLogicalCoreIDs(), lldb_private::process_linux::IntelPTCollector::GetBinaryData(), and lldb_private::process_linux::IntelPTCollector::GetState().

GetPtraceScope()

llvm::Expected< int > lldb_private::process_linux::GetPtraceScope

(

)

Returns

The current value of /proc/sys/kernel/yama/ptrace_scope, parsed as an integer, or an error if the proc file cannot be read or has non-integer contents.

Definition at line 74 of file Procfs.cpp.

References createStringError(), and lldb_private::getProcFile().

Referenced by AddPtraceScopeNote().

LoadPerfTscConversionParameters()

Expected< LinuxPerfZeroTscConversion > lldb_private::process_linux::LoadPerfTscConversionParameters

(

)

Load PerfTscConversionParameters from perf_event_mmap_page, if available.

Definition at line 26 of file Perf.cpp.

References lldb_private::process_linux::PerfEvent::Init().

Referenced by lldb_private::process_linux::IntelPTCollector::FetchPerfTscConversionParameters().