crashpad::ProcessSnapshotLinux Class Reference

A ProcessSnapshot of a running (or crashed) process running on a Linux system. More...

#include "snapshot/linux/process_snapshot_linux.h"

Inheritance diagram for crashpad::ProcessSnapshotLinux:

Public Member Functions
bool	Initialize (PtraceConnection *connection)
	Initializes the object. More...
pid_t	FindThreadWithStackAddress (VMAddress stack_address)
	Finds the thread whose stack contains stack_address. More...
bool	InitializeException (LinuxVMAddress exception_info, pid_t exception_thread_id=-1)
	Initializes the object's exception. More...
void	SetReportID (const UUID &report_id)
	Sets the value to be returned by ReportID(). More...
void	SetClientID (const UUID &client_id)
	Sets the value to be returned by ClientID(). More...
void	AddAnnotation (const std::string &key, const std::string &value)
	Add an annotation to be returned by AnnotationsSimpleMap(). More...
void	GetCrashpadOptions (CrashpadInfoClientOptions *options)
	Returns options from CrashpadInfo structures found in modules in the process. More...
crashpad::ProcessID	ProcessID () const override
	Returns the snapshot process’ process ID.
crashpad::ProcessID	ParentProcessID () const override
	Returns the snapshot process’ parent process’ process ID.
void	SnapshotTime (timeval *snapshot_time) const override
	Returns the time that the snapshot was taken in snapshot_time. More...
void	ProcessStartTime (timeval *start_time) const override
	Returns the time that the snapshot process was started in start_time. More...
void	ProcessCPUTimes (timeval *user_time, timeval *system_time) const override
	Returns the snapshot process’ CPU usage times in user_time and system_time. More...
void	ReportID (UUID *report_id) const override
	Returns a UUID identifying the event that the snapshot describes. More...
void	ClientID (UUID *client_id) const override
	Returns a UUID identifying the client that the snapshot represents. More...
const std::map< std::string, std::string > &	AnnotationsSimpleMap () const override
	Returns key-value string annotations recorded for the process, system, or snapshot producer. More...
const SystemSnapshot *	System () const override
	Returns a SystemSnapshot reflecting the characteristics of the system that ran the snapshot process at the time of the snapshot. More...
std::vector< const ThreadSnapshot * >	Threads () const override
	Returns ThreadSnapshot objects reflecting the threads (lightweight processes) existing in the snapshot process at the time of the snapshot. More...
std::vector< const ModuleSnapshot * >	Modules () const override
	Returns ModuleSnapshot objects reflecting the code modules (binary images) loaded into the snapshot process at the time of the snapshot. More...
std::vector< UnloadedModuleSnapshot >	UnloadedModules () const override
	Returns UnloadedModuleSnapshot objects reflecting the code modules the were recorded as unloaded at the time of the snapshot. More...
const ExceptionSnapshot *	Exception () const override
	Returns an ExceptionSnapshot reflecting the exception that the snapshot process sustained to trigger the snapshot being taken. More...
std::vector< const MemoryMapRegionSnapshot * >	MemoryMap () const override
	Returns MemoryMapRegionSnapshot objects reflecting the regions of the memory map in the snapshot process at the time of the snapshot. More...
std::vector< HandleSnapshot >	Handles () const override
	Returns HandleSnapshot objects reflecting the open handles in the snapshot process at the time of the snapshot. More...
std::vector< const MemorySnapshot * >	ExtraMemory () const override
	Returns a vector of additional memory blocks that should be included in a minidump. More...
const ProcessMemory *	Memory () const override
	Returns a ProcessMemory object that allows accessing the process' memory directly. More...

Detailed Description

A ProcessSnapshot of a running (or crashed) process running on a Linux system.

Member Function Documentation

AddAnnotation()

void crashpad::ProcessSnapshotLinux::AddAnnotation ( const std::string &  key, const std::string &  value  )

inline

Add an annotation to be returned by AnnotationsSimpleMap().

Most process annotations are under the control of the snapshot producer, which may call this method to establish these annotations. On Android Q or later, the process snapshot may add an "abort_message" annotation, which will contain the abort message passed to the android_set_abort_message() function. Contrast this with module annotations, which are under the control of the process being snapshotted.

AnnotationsSimpleMap()

const std::map< std::string, std::string > & crashpad::ProcessSnapshotLinux::AnnotationsSimpleMap ( ) const

overridevirtual

Returns key-value string annotations recorded for the process, system, or snapshot producer.

This method retrieves annotations recorded for a process. These annotations are intended for diagnostic use, including crash analysis. “Simple annotations” are structured as a sequence of key-value pairs, where all keys and values are strings. These are referred to in Chrome as “crash keys.”

Annotations stored here may reflect the process, system, or snapshot producer. Most annotations not under the client’s direct control will be retrievable by this method. For clients such as Chrome, this includes the product name and version.

Additional per-module annotations may be obtained by calling ModuleSnapshot::AnnotationsSimpleMap().

Implements crashpad::ProcessSnapshot.

ClientID()

void crashpad::ProcessSnapshotLinux::ClientID ( UUID *  client_id ) const

overridevirtual

Returns a UUID identifying the client that the snapshot represents.

Client identification is within the scope of the application, but it is expected that the identifier will be unique for an instance of Crashpad monitoring an application or set of applications for a user. The identifier shall remain stable over time.

If no identifier is available, this field will contain zeroes.

Implements crashpad::ProcessSnapshot.

Exception()

const ExceptionSnapshot * crashpad::ProcessSnapshotLinux::Exception ( ) const

overridevirtual

Returns an ExceptionSnapshot reflecting the exception that the snapshot process sustained to trigger the snapshot being taken.

Returns

An ExceptionSnapshot object. The caller does not take ownership of this object, it is scoped to the lifetime of the ProcessSnapshot object that it was obtained from. If the snapshot is not a result of an exception, returns nullptr.

Implements crashpad::ProcessSnapshot.

ExtraMemory()

std::vector< const MemorySnapshot * > crashpad::ProcessSnapshotLinux::ExtraMemory ( ) const

overridevirtual

Returns a vector of additional memory blocks that should be included in a minidump.

Returns

An vector of MemorySnapshot objects that will be included in the crash dump. The caller does not take ownership of these objects, they are scoped to the lifetime of the ProcessSnapshot object that they were obtained from.

Implements crashpad::ProcessSnapshot.

FindThreadWithStackAddress()

pid_t crashpad::ProcessSnapshotLinux::FindThreadWithStackAddress

(

VMAddress

stack_address

)

Finds the thread whose stack contains stack_address.

Parameters

[in]

stack_address

A stack address to search for.

Returns

The thread ID of the thread whose stack contains stack_address or -1 if no matching thread is found.

GetCrashpadOptions()

void crashpad::ProcessSnapshotLinux::GetCrashpadOptions

(

CrashpadInfoClientOptions *

options

)

Returns options from CrashpadInfo structures found in modules in the process.

Parameters

[out]

options

Options set in CrashpadInfo structures in modules in the process.

Handles()

std::vector< HandleSnapshot > crashpad::ProcessSnapshotLinux::Handles ( ) const

overridevirtual

Returns HandleSnapshot objects reflecting the open handles in the snapshot process at the time of the snapshot.

Returns

A vector of HandleSnapshot objects.

Implements crashpad::ProcessSnapshot.

Initialize()

bool crashpad::ProcessSnapshotLinux::Initialize

(

PtraceConnection *

connection

)

Initializes the object.

Parameters

[in]

connection

A connection to the process to snapshot.

Returns

true if the snapshot could be created, false otherwise with an appropriate message logged.

InitializeException()

bool crashpad::ProcessSnapshotLinux::InitializeException	(	LinuxVMAddress	exception_info,
		pid_t	exception_thread_id = -1
	)

Initializes the object's exception.

Parameters

[in]	exception_info	The address of an ExceptionInformation in the target process' address space.
[in]	exception_thread_id	The thread ID to assocaite the thread with. Optional. If -1, the exception thread will be identified by the ExceptionInformation struct which contains the thread ID in the target process' namespace.

Memory()

const ProcessMemory * crashpad::ProcessSnapshotLinux::Memory ( ) const

overridevirtual

Returns a ProcessMemory object that allows accessing the process' memory directly.

Returns

A ProcessMemory object. The caller does not take ownership of this object, it is scoped to the lifetime of the ProcessSnapshot object that it was obtained from.

Implements crashpad::ProcessSnapshot.

MemoryMap()

std::vector< const MemoryMapRegionSnapshot * > crashpad::ProcessSnapshotLinux::MemoryMap ( ) const

overridevirtual

Returns MemoryMapRegionSnapshot objects reflecting the regions of the memory map in the snapshot process at the time of the snapshot.

Returns

A vector of MemoryMapRegionSnapshot objects. The caller does not take ownership of these objects, they are scoped to the lifetime of the ProcessSnapshot object that they were obtained from.

Implements crashpad::ProcessSnapshot.

Modules()

std::vector< const ModuleSnapshot * > crashpad::ProcessSnapshotLinux::Modules ( ) const

overridevirtual

Returns ModuleSnapshot objects reflecting the code modules (binary images) loaded into the snapshot process at the time of the snapshot.

Returns

A vector of ModuleSnapshot objects. The caller does not take ownership of these objects, they are scoped to the lifetime of the ProcessSnapshot object that they were obtained from.

Implements crashpad::ProcessSnapshot.

ProcessCPUTimes()

void crashpad::ProcessSnapshotLinux::ProcessCPUTimes ( timeval *  user_time, timeval *  system_time  ) const

overridevirtual

Returns the snapshot process’ CPU usage times in user_time and system_time.

Parameters

[out]	user_time	The time that the process has spent executing in user mode.
[out]	system_time	The time that the process has spent executing in system (kernel) mode.

Implements crashpad::ProcessSnapshot.

ProcessStartTime()

void crashpad::ProcessSnapshotLinux::ProcessStartTime ( timeval *  start_time ) const

overridevirtual

Returns the time that the snapshot process was started in start_time.

Normally, process uptime in wall clock time can be computed as SnapshotTime() − ProcessStartTime(), but this cannot be guaranteed in cases where the real-time clock has been set during the snapshot process’ lifetime.

Parameters

[out]

start_time

The time that the process was started.

Implements crashpad::ProcessSnapshot.

ReportID()

void crashpad::ProcessSnapshotLinux::ReportID ( UUID *  client_id ) const

overridevirtual

Returns a UUID identifying the event that the snapshot describes.

This provides a stable identifier for a crash even as the report is converted to different formats, provided that all formats support storing a crash report ID. When a report is originally created, a report ID should be assigned. From that point on, any operations involving the same report should preserve the same report ID.

If no identifier is available, this field will contain zeroes.

Implements crashpad::ProcessSnapshot.

SetClientID()

void crashpad::ProcessSnapshotLinux::SetClientID ( const UUID &  client_id )

inline

Sets the value to be returned by ClientID().

The client ID is under the control of the snapshot producer, which may call this method to set the client ID. If this is not done, ClientID() will return an identifier consisting entirely of zeroes.

SetReportID()

void crashpad::ProcessSnapshotLinux::SetReportID ( const UUID &  report_id )

inline

Sets the value to be returned by ReportID().

The crash report ID is under the control of the snapshot producer, which may call this method to set the report ID. If this is not done, ReportID() will return an identifier consisting entirely of zeroes.

SnapshotTime()

void crashpad::ProcessSnapshotLinux::SnapshotTime ( timeval *  snapshot_time ) const

overridevirtual

Returns the time that the snapshot was taken in snapshot_time.

Parameters

[out]

snapshot_time

The time that the snapshot was taken. This is distinct from the time that a ProcessSnapshot object was created or initialized, although it may be that time for ProcessSnapshot objects representing live or recently-crashed process state.

Implements crashpad::ProcessSnapshot.

System()

const SystemSnapshot * crashpad::ProcessSnapshotLinux::System ( ) const

overridevirtual

Returns a SystemSnapshot reflecting the characteristics of the system that ran the snapshot process at the time of the snapshot.

Returns

A SystemSnapshot object. The caller does not take ownership of this object, it is scoped to the lifetime of the ProcessSnapshot object that it was obtained from.

Implements crashpad::ProcessSnapshot.

Threads()

std::vector< const ThreadSnapshot * > crashpad::ProcessSnapshotLinux::Threads ( ) const

overridevirtual

Returns ThreadSnapshot objects reflecting the threads (lightweight processes) existing in the snapshot process at the time of the snapshot.

Returns

A vector of ThreadSnapshot objects. The caller does not take ownership of these objects, they are scoped to the lifetime of the ProcessSnapshot object that they were obtained from.

Implements crashpad::ProcessSnapshot.

UnloadedModules()

std::vector< UnloadedModuleSnapshot > crashpad::ProcessSnapshotLinux::UnloadedModules ( ) const

overridevirtual

Returns UnloadedModuleSnapshot objects reflecting the code modules the were recorded as unloaded at the time of the snapshot.

Returns

A vector of UnloadedModuleSnapshot objects.

Implements crashpad::ProcessSnapshot.

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

• snapshot/linux/process_snapshot_linux.h
• snapshot/linux/process_snapshot_linux.cc