lldb_private::Host Class Reference

A class that provides host computer information. More...

#include "lldb/Host/Host.h"

Public Types
typedef std::function< void(lldb::pid_t pid, int signal, int status)>	MonitorChildProcessCallback
typedef std::map< lldb::pid_t, bool >	TidMap
typedef std::pair< lldb::pid_t, bool >	TidPair

Static Public Member Functions
static llvm::Expected< HostThread >	StartMonitoringChildProcess (const MonitorChildProcessCallback &callback, lldb::pid_t pid)
	Start monitoring a child process.
static void	SystemLog (lldb::Severity severity, llvm::StringRef message)
	Emit the given message to the operating system log.
static lldb::pid_t	GetCurrentProcessID ()
	Get the process ID for the calling process.
static void	Kill (lldb::pid_t pid, int signo)
static lldb::thread_t	GetCurrentThread ()
	Get the thread token (the one returned by ThreadCreate when the thread was created) for the calling thread in the current process.
static const char *	GetSignalAsCString (int signo)
static FileSpec	GetModuleFileSpecForHostAddress (const void *host_addr)
	Given an address in the current process (the process that is running the LLDB code), return the name of the module that it comes from.
static bool	GetBundleDirectory (const FileSpec &file, FileSpec &bundle_directory)
	If you have an executable that is in a bundle and want to get back to the bundle directory from the path itself, this function will change a path to a file within a bundle to the bundle directory itself.
static bool	ResolveExecutableInBundle (FileSpec &file)
	When executable files may live within a directory, where the directory represents an executable bundle (like the MacOSX app bundles), then locate the executable within the containing bundle.
static uint32_t	FindProcesses (const ProcessInstanceInfoMatch &match_info, ProcessInstanceInfoList &proc_infos)
static bool	FindProcessThreads (const lldb::pid_t pid, TidMap &tids_to_attach)
static bool	GetProcessInfo (lldb::pid_t pid, ProcessInstanceInfo &proc_info)
static Status	LaunchProcess (ProcessLaunchInfo &launch_info)
	Launch the process specified in launch_info.
static Status	ShellExpandArguments (ProcessLaunchInfo &launch_info)
	Perform expansion of the command-line for this launch info This can potentially involve wildcard expansion environment variable replacement, and whatever other argument magic the platform defines as part of its typical user experience.
static Status	RunShellCommand (llvm::StringRef command, const FileSpec &working_dir, int *status_ptr, int *signo_ptr, std::string *command_output, const Timeout< std::micro > &timeout, bool run_in_shell=true, bool hide_stderr=false)
	Run a shell command.
static Status	RunShellCommand (llvm::StringRef shell, llvm::StringRef command, const FileSpec &working_dir, int *status_ptr, int *signo_ptr, std::string *command_output, const Timeout< std::micro > &timeout, bool run_in_shell=true, bool hide_stderr=false)
	Run a shell command.
static Status	RunShellCommand (const Args &args, const FileSpec &working_dir, int *status_ptr, int *signo_ptr, std::string *command_output, const Timeout< std::micro > &timeout, bool run_in_shell=true, bool hide_stderr=false)
	Run a shell command.
static Status	RunShellCommand (llvm::StringRef shell, const Args &args, const FileSpec &working_dir, int *status_ptr, int *signo_ptr, std::string *command_output, const Timeout< std::micro > &timeout, bool run_in_shell=true, bool hide_stderr=false)
	Run a shell command.
static llvm::Error	OpenFileInExternalEditor (llvm::StringRef editor, const FileSpec &file_spec, uint32_t line_no)
static bool	IsInteractiveGraphicSession ()
	Check if we're running in an interactive graphical session.
static Environment	GetEnvironment ()
static std::unique_ptr< Connection >	CreateDefaultConnection (llvm::StringRef url)

Static Protected Member Functions
static uint32_t	FindProcessesImpl (const ProcessInstanceInfoMatch &match_info, ProcessInstanceInfoList &proc_infos)

Detailed Description

A class that provides host computer information.

Host is a class that answers information about the host operating system.

Definition at line 82 of file Host.h.

Member Typedef Documentation

MonitorChildProcessCallback

typedef std::function<void(lldb::pid_t pid, int signal, int status)> lldb_private::Host::MonitorChildProcessCallback

Definition at line 88 of file Host.h.

TidMap

typedef std::map<lldb::pid_t, bool> lldb_private::Host::TidMap

Definition at line 179 of file Host.h.

TidPair

typedef std::pair<lldb::pid_t, bool> lldb_private::Host::TidPair

Definition at line 180 of file Host.h.

Member Function Documentation

CreateDefaultConnection()

std::unique_ptr< Connection > Host::CreateDefaultConnection ( llvm::StringRef  url )

static

Definition at line 577 of file common/Host.cpp.

Referenced by lldb::SBCommunication::Connect().

FindProcesses()

uint32_t Host::FindProcesses ( const ProcessInstanceInfoMatch &  match_info, ProcessInstanceInfoList &  proc_infos  )

static

Definition at line 633 of file common/Host.cpp.

References FindProcessesImpl().

Referenced by lldb_private::process_gdb_remote::GDBRemoteCommunicationServerLLGS::AttachWaitProcess(), lldb_private::Platform::FindProcesses(), lldb_private::PlatformAppleSimulator::FindProcesses(), and lldb_private::process_gdb_remote::GDBRemoteCommunicationServerCommon::Handle_qfProcessInfo().

FindProcessesImpl()

uint32_t Host::FindProcessesImpl ( const ProcessInstanceInfoMatch &  match_info, ProcessInstanceInfoList &  proc_infos  )

staticprotected

Definition at line 153 of file freebsd/Host.cpp.

References GetFreeBSDProcessArgs(), GetFreeBSDProcessCPUType(), lldb_private::ProcessInstanceInfoMatch::GetMatchAllUsers(), lldb_private::Ignore, lldb_private::ProcessInstanceInfoMatch::Matches(), lldb_private::ProcessInstanceInfo::SetEffectiveGroupID(), lldb_private::ProcessInstanceInfo::SetEffectiveUserID(), lldb_private::ProcessInfo::SetGroupID(), lldb_private::ProcessInstanceInfoMatch::SetNameMatchType(), lldb_private::ProcessInstanceInfo::SetParentProcessID(), lldb_private::ProcessInfo::SetProcessID(), and lldb_private::ProcessInfo::SetUserID().

Referenced by FindProcesses().

FindProcessThreads()

bool Host::FindProcessThreads ( const lldb::pid_t  pid, TidMap &  tids_to_attach  )

static

Definition at line 366 of file common/Host.cpp.

Referenced by lldb_private::process_linux::NativeProcessLinux::Attach().

GetBundleDirectory()

bool Host::GetBundleDirectory ( const FileSpec &  file, FileSpec &  bundle_directory  )

static

If you have an executable that is in a bundle and want to get back to the bundle directory from the path itself, this function will change a path to a file within a bundle to the bundle directory itself.

Parameters

[in]	file	A file spec that might point to a file in a bundle.
[out]	bundle_directory	An object will be filled in with the bundle directory for the bundle when true is returned. Otherwise file is left untouched and false is returned.

Returns

true if file was resolved in bundle_directory, false otherwise.

Definition at line 339 of file common/Host.cpp.

References lldb_private::FileSpec::Clear().

Referenced by lldb_private::PlatformDarwin::GetSharedModule().

GetCurrentProcessID()

lldb::pid_t Host::GetCurrentProcessID ( )

static

Get the process ID for the calling process.

Returns

The process ID for the current process.

Definition at line 241 of file common/Host.cpp.

Referenced by lldb_private::HostInfoBase::ComputeProcessTempFileDirectory().

GetCurrentThread()

lldb::thread_t Host::GetCurrentThread ( )

static

Get the thread token (the one returned by ThreadCreate when the thread was created) for the calling thread in the current process.

Returns

The thread token for the calling thread in the current process.

Definition at line 245 of file common/Host.cpp.

Referenced by lldb_private::Process::CurrentThreadIsPrivateStateThread(), lldb_private::Process::GetRunLock(), lldb_private::Debugger::IsIOHandlerThreadCurrentThread(), lldb_private::CommandInterpreter::RunCommandInterpreter(), and lldb_private::Process::RunThreadPlan().

GetEnvironment()

Environment Host::GetEnvironment ( )

static

Definition at line 244 of file freebsd/Host.cpp.

References environ.

Referenced by lldb_private::PlatformQemuUser::DebugProcess(), lldb_private::process_gdb_remote::GDBRemoteCommunication::GetDebugserverPath(), lldb_private::Platform::GetEnvironment(), lldb_private::PlatformQemuUser::GetEnvironment(), RunShellCommand(), and lldb_private::process_gdb_remote::GDBRemoteCommunication::StartDebugserverProcess().

GetModuleFileSpecForHostAddress()

FileSpec Host::GetModuleFileSpecForHostAddress ( const void *  host_addr )

static

Given an address in the current process (the process that is running the LLDB code), return the name of the module that it comes from.

This can be useful when you need to know the path to the shared library that your code is running in for loading resources that are relative to your binary.

Parameters

[in]

host_addr

The pointer to some code in the current process.

Returns

A file spec with the module that contains host_addr, which may be invalid if host_addr doesn't fall into any valid module address range.

Definition at line 349 of file common/Host.cpp.

References lldb_private::FileSystem::Instance(), lldb_private::FileSystem::Resolve(), and lldb_private::FileSpec::SetFile().

Referenced by lldb_private::HostInfoBase::ComputeSharedLibraryDirectory().

GetProcessInfo()

bool Host::GetProcessInfo ( lldb::pid_t  pid, ProcessInstanceInfo &  proc_info  )

static

Definition at line 230 of file freebsd/Host.cpp.

References lldb_private::ProcessInstanceInfo::Clear(), GetFreeBSDProcessArgs(), GetFreeBSDProcessCPUType(), GetFreeBSDProcessUserAndGroup(), and lldb_private::ProcessInfo::SetProcessID().

Referenced by lldb_private::process_freebsd::NativeProcessFreeBSD::Manager::Attach(), lldb_private::process_netbsd::NativeProcessNetBSD::Manager::Attach(), lldb_private::NativeThreadWindows::GetName(), lldb_private::PlatformDarwin::GetOSVersion(), lldb_private::Platform::GetProcessInfo(), lldb_private::process_gdb_remote::GDBRemoteCommunicationServerLLGS::Handle_qProcessInfo(), lldb_private::process_gdb_remote::GDBRemoteCommunicationServerPlatform::Handle_qProcessInfo(), lldb_private::process_gdb_remote::GDBRemoteCommunicationServerCommon::Handle_qProcessInfoPID(), lldb_private::process_freebsd::NativeProcessFreeBSD::Manager::Launch(), lldb_private::process_netbsd::NativeProcessNetBSD::Manager::Launch(), lldb_private::NativeProcessWindows::NativeProcessWindows(), and lldb_private::NativeProcessWindows::OnDebuggerConnected().

GetSignalAsCString()

const char * Host::GetSignalAsCString ( int  signo )

static

Definition at line 249 of file common/Host.cpp.

References SIGKILL, SIGSTOP, and SIGTRAP.

Referenced by CommandObjectPlatformShell::DoExecute(), lldb_private::process_linux::NativeProcessLinux::MonitorSignal(), and lldb_private::process_linux::NativeProcessLinux::Signal().

IsInteractiveGraphicSession()

bool Host::IsInteractiveGraphicSession ( )

static

Check if we're running in an interactive graphical session.

Returns

True if we're running in an interactive graphical session. False if we're not or don't know.

Definition at line 574 of file common/Host.cpp.

Referenced by lldb_private::CommandInterpreter::SaveTranscript().

Kill()

void Host::Kill ( lldb::pid_t  pid, int  signo  )

static

Definition at line 562 of file common/Host.cpp.

Referenced by lldb_private::process_gdb_remote::GDBRemoteCommunicationServerPlatform::Handle_qLaunchGDBServer(), lldb_private::process_gdb_remote::ProcessGDBRemote::KillDebugserverProcess(), lldb_private::Platform::KillProcess(), lldb_private::process_gdb_remote::GDBRemoteCommunicationServerPlatform::KillSpawnedProcess(), and RunShellCommand().

LaunchProcess()

Status Host::LaunchProcess ( ProcessLaunchInfo &  launch_info )

static

Launch the process specified in launch_info.

The monitoring callback in launch_info must be set, and it will be called when the process terminates.

Definition at line 541 of file common/Host.cpp.

References error(), lldb_private::HostProcess::GetProcessId(), lldb_private::MonitoringProcessLauncher::LaunchProcess(), and lldb_private::ProcessInfo::SetProcessID().

Referenced by lldb_private::PlatformQemuUser::DebugProcess(), lldb_private::process_gdb_remote::GDBRemoteCommunicationServerPlatform::LaunchProcess(), lldb_private::Platform::LaunchProcess(), RunShellCommand(), and lldb_private::process_gdb_remote::GDBRemoteCommunication::StartDebugserverProcess().

OpenFileInExternalEditor()

llvm::Error Host::OpenFileInExternalEditor ( llvm::StringRef  editor, const FileSpec &  file_spec, uint32_t  line_no  )

static

Definition at line 567 of file common/Host.cpp.

Referenced by lldb_private::Thread::GetStatus(), lldb_private::CommandInterpreter::SaveTranscript(), and lldb_private::Thread::SetSelectedFrameByIndexNoisily().

ResolveExecutableInBundle()

bool Host::ResolveExecutableInBundle ( FileSpec &  file )

static

When executable files may live within a directory, where the directory represents an executable bundle (like the MacOSX app bundles), then locate the executable within the containing bundle.

Parameters

[in,out]

file

A file spec that currently points to the bundle that will be filled in with the executable path within the bundle if true is returned. Otherwise file is left untouched.

Returns

true if file was resolved, false if this function was not able to resolve the path.

Definition at line 344 of file common/Host.cpp.

Referenced by lldb_private::TargetList::CreateTargetInternal(), lldb::SBModuleSpecList::GetModuleSpecifications(), lldb_private::PlatformDarwin::GetSharedModule(), and lldb_private::Platform::ResolveExecutable().

RunShellCommand() [1/4]

Status Host::RunShellCommand ( const Args &  args, const FileSpec &  working_dir, int *  status_ptr, int *  signo_ptr, std::string *  command_output, const Timeout< std::micro > &  timeout, bool  run_in_shell = true, bool  hide_stderr = false  )

static

Run a shell command.

• working_dir Pass empty FileSpec to use the current working directory
• status_ptr Pass NULL if you don't want the process exit status
• signo_ptr Pass NULL if you don't want the signal that caused the process to exit
• command_output Pass NULL if you don't want the command output
• hide_stderr if this is false, redirect stderr to stdout

Definition at line 414 of file common/Host.cpp.

References RunShellCommand().

RunShellCommand() [2/4]

Status Host::RunShellCommand ( llvm::StringRef  command, const FileSpec &  working_dir, int *  status_ptr, int *  signo_ptr, std::string *  command_output, const Timeout< std::micro > &  timeout, bool  run_in_shell = true, bool  hide_stderr = false  )

static

Run a shell command.

• command shouldn't be empty
• working_dir Pass empty FileSpec to use the current working directory
• status_ptr Pass NULL if you don't want the process exit status
• signo_ptr Pass NULL if you don't want the signal that caused the process to exit
• command_output Pass NULL if you don't want the command output
• hide_stderr if this is false, redirect stderr to stdout

Definition at line 393 of file common/Host.cpp.

References RunShellCommand().

Referenced by lldb_private::SymbolLocatorDebugSymbols::DownloadObjectAndSymbolFile(), PlatformPOSIX::GetFile(), GetXcodeSelectPath(), lldb_private::process_gdb_remote::GDBRemoteCommunicationServerCommon::Handle_qPlatform_shell(), PlatformPOSIX::PutFile(), RunShellCommand(), lldb_private::Platform::RunShellCommand(), and xcrun().

RunShellCommand() [3/4]

Status Host::RunShellCommand ( llvm::StringRef  shell, const Args &  args, const FileSpec &  working_dir, int *  status_ptr, int *  signo_ptr, std::string *  command_output, const Timeout< std::micro > &  timeout, bool  run_in_shell = true, bool  hide_stderr = false  )

static

Run a shell command.

• shell Pass an empty string if you want to use the default shell interpreter
• command
• working_dir Pass empty FileSpec to use the current working directory
• status_ptr Pass NULL if you don't want the process exit status
• signo_ptr Pass NULL if you don't want the signal that caused the process to exit
• command_output Pass NULL if you don't want the command output
• hide_stderr If this is false, redirect stderr to stdout

Definition at line 424 of file common/Host.cpp.

References lldb_private::Args::AppendArguments(), lldb_private::ProcessLaunchInfo::AppendDuplicateFileAction(), lldb_private::ProcessLaunchInfo::AppendOpenFileAction(), lldb_private::ProcessLaunchInfo::AppendSuppressFileAction(), lldb_private::ProcessLaunchInfo::ConvertArgumentsForLaunchingInShell(), lldb_private::FileSystem::CreateWritableDataBuffer(), error(), lldb_private::Status::FromErrorString(), lldb_private::Status::FromErrorStringWithFormat(), lldb_private::ProcessInfo::GetArguments(), lldb_private::FileSystem::GetByteSize(), GetEnvironment(), lldb_private::ProcessInfo::GetEnvironment(), lldb_private::FileSpec::GetPath(), lldb_private::ProcessInfo::GetProcessID(), lldb_private::FileSystem::Instance(), Kill(), LaunchProcess(), LLDB_INVALID_PROCESS_ID, MonitorShellCommand(), lldb_private::ProcessInfo::SetArchitecture(), lldb_private::ProcessInfo::SetArguments(), lldb_private::ProcessLaunchInfo::SetMonitorProcessCallback(), lldb_private::FileSpec::SetPath(), lldb_private::ProcessLaunchInfo::SetShell(), lldb_private::ProcessLaunchInfo::SetWorkingDirectory(), and SIGKILL.

RunShellCommand() [4/4]

Status Host::RunShellCommand ( llvm::StringRef  shell, llvm::StringRef  command, const FileSpec &  working_dir, int *  status_ptr, int *  signo_ptr, std::string *  command_output, const Timeout< std::micro > &  timeout, bool  run_in_shell = true, bool  hide_stderr = false  )

static

Run a shell command.

• shell Pass an empty string if you want to use the default shell interpreter
• command
• working_dir Pass empty FileSpec to use the current working directory
• status_ptr Pass NULL if you don't want the process exit status
• signo_ptr Pass NULL if you don't want the signal that caused the process to exit
• command_output Pass NULL if you don't want the command output
• hide_stderr If this is false, redirect stderr to stdout

Definition at line 403 of file common/Host.cpp.

References RunShellCommand().

ShellExpandArguments()

Status Host::ShellExpandArguments ( ProcessLaunchInfo &  launch_info )

static

Perform expansion of the command-line for this launch info This can potentially involve wildcard expansion environment variable replacement, and whatever other argument magic the platform defines as part of its typical user experience.

Definition at line 246 of file freebsd/Host.cpp.

References lldb_private::Status::FromErrorString().

Referenced by lldb_private::Platform::ShellExpandArguments().

StartMonitoringChildProcess()

llvm::Expected< HostThread > Host::StartMonitoringChildProcess ( const MonitorChildProcessCallback &  callback, lldb::pid_t  pid  )

static

Start monitoring a child process.

Allows easy monitoring of child processes. callback will be called when the child process exits or if it dies from a signal.

Parameters

[in]	callback	A function callback to call when a child receives a signal or exits.
[in]	pid	The process ID of a child process to monitor.

Returns

A thread handle that can be used to cancel the thread that was spawned to monitor pid.

Definition at line 121 of file common/Host.cpp.

References lldb_private::ThreadLauncher::LaunchThread(), MonitorChildProcessThreadFunction(), and UINT32_MAX.

Referenced by lldb_private::ProcessLaunchInfo::MonitorProcess(), and lldb_private::HostProcessPosix::StartMonitoring().

SystemLog()

void Host::SystemLog ( lldb::Severity  severity, llvm::StringRef  message  )

static

Emit the given message to the operating system log.

Definition at line 97 of file common/Host.cpp.

Referenced by lldb_private::SystemLogHandler::Emit(), and lldb_private::Debugger::ReportDiagnosticImpl().

---

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

• Host.h
• common/Host.cpp
• freebsd/Host.cpp
• linux/Host.cpp
• Host.mm
• HostNetBSD.cpp
• openbsd/Host.cpp
• windows/Host.cpp