#include <wpinet/uv/Process.h>

Inheritance diagram for wpi::uv::Process:

Classes
struct	Option
	Structure for Spawn() option temporaries. More...

Public Member Functions
	Process (const private_init &)

	~Process () noexcept override=default

void	Kill (int signum)
	Sends the specified signal to the process. More...

uv_pid_t	GetPid () const noexcept
	Get the process ID. More...

Public Member Functions inherited from wpi::uv::HandleImpl< Process, uv_process_t >
std::shared_ptr< Process >	shared_from_this ()

std::shared_ptr< const Process >	shared_from_this () const

uv_process_t *	GetRaw () const noexcept
	Get the underlying handle data structure. More...

Public Member Functions inherited from wpi::uv::Handle
	Handle (const Handle &)=delete

	Handle (Handle &&)=delete

Handle &	operator= (const Handle &)=delete

Handle &	operator= (Handle &&)=delete

virtual	~Handle () noexcept

Type	GetType () const noexcept
	Get the type of the handle. More...

std::string_view	GetTypeName () const noexcept
	Get the name of the type of the handle. More...

std::shared_ptr< Loop >	GetLoop () const noexcept
	Get the loop where this handle runs. More...

Loop &	GetLoopRef () const noexcept
	Get the loop where this handle runs. More...

bool	IsActive () const noexcept
	Check if the handle is active. More...

bool	IsClosing () const noexcept
	Check if a handle is closing or closed. More...

void	Close () noexcept
	Request handle to be closed. More...

void	SetLoopClosing (bool loopClosing) noexcept
	Set if the loop is closing. More...

bool	IsLoopClosing () const noexcept
	Get the loop closing status. More...

void	Reference () noexcept
	Reference the given handle. More...

void	Unreference () noexcept
	Unreference the given handle. More...

bool	HasReference () const noexcept
	Check if the given handle is referenced. More...

size_t	RawSize () const noexcept
	Return the size of the underlying handle type. More...

uv_handle_t *	GetRawHandle () const noexcept
	Get the underlying handle data structure. More...

void	SetBufferAllocator (std::function< Buffer(size_t)> alloc, std::function< void(Buffer &)> dealloc)
	Set the functions used for allocating and releasing buffers. More...

void	FreeBuf (Buffer &buf) const noexcept
	Free a buffer. More...

template<typename T = void>
std::shared_ptr< T >	GetData () const
	Gets user-defined data. More...

void	SetData (std::shared_ptr< void > data)
	Sets user-defined data. More...

void	ReportError (int err) const
	Report an error. More...

Static Public Member Functions
static Option	Env (std::string_view env)
	Set environment variable for the subprocess. More...

static Option	Cwd (std::string_view cwd)
	Set the current working directory for the subprocess. More...

static Option	Uid (uv_uid_t uid)
	Set the child process' user id. More...

static Option	Gid (uv_gid_t gid)
	Set the child process' group id. More...

static Option	SetFlags (unsigned int flags)
	Set spawn flags. More...

static Option	ClearFlags (unsigned int flags)
	Clear spawn flags. More...

static Option	StdioIgnore (size_t index)
	Explicitly ignore a stdio. More...

static Option	StdioInherit (size_t index, int fd)
	Inherit a file descriptor from the parent process. More...

static Option	StdioInherit (size_t index, Pipe &pipe)
	Inherit a pipe from the parent process. More...

static Option	StdioCreatePipe (size_t index, Pipe &pipe, unsigned int flags)
	Create a pipe between the child and the parent. More...

static void	DisableStdioInheritance ()
	Disables inheritance for file descriptors / handles that this process inherited from its parent. More...

static std::shared_ptr< Process >	SpawnArray (Loop &loop, std::string_view file, std::span< const Option > options)
	Starts a process. More...

static std::shared_ptr< Process >	SpawnArray (Loop &loop, std::string_view file, std::initializer_list< Option > options)

template<typename... Args>
static std::shared_ptr< Process >	Spawn (Loop &loop, std::string_view file, const Args &... options)

static std::shared_ptr< Process >	SpawnArray (const std::shared_ptr< Loop > &loop, std::string_view file, std::span< const Option > options)
	Starts a process. More...

static std::shared_ptr< Process >	SpawnArray (const std::shared_ptr< Loop > &loop, std::string_view file, std::initializer_list< Option > options)

template<typename... Args>
static std::shared_ptr< Process >	Spawn (const std::shared_ptr< Loop > &loop, std::string_view file, const Args &... options)

static int	Kill (int pid, int signum) noexcept
	Sends the specified signal to the given PID. More...

Public Attributes
sig::Signal< int64_t, int >	exited
	Signal generated when the process exits. More...

Public Attributes inherited from wpi::uv::Handle
sig::Signal< Error >	error
	Error signal. More...

sig::Signal	closed
	Closed signal. More...

Additional Inherited Members
Public Types inherited from wpi::uv::Handle
using	Type = uv_handle_type

Protected Member Functions inherited from wpi::uv::HandleImpl< Process, uv_process_t >
	HandleImpl ()

Protected Member Functions inherited from wpi::uv::Handle
	Handle (uv_handle_t *uv_handle)

void	Keep () noexcept

void	Release () noexcept

void	ForceClosed () noexcept

template<typename F , typename... Args>
bool	Invoke (F &&f, Args &&... args) const

Static Protected Member Functions inherited from wpi::uv::Handle
static void	AllocBuf (uv_handle_t handle, size_t size, uv_buf_t buf)

static void	DefaultFreeBuf (Buffer &buf)

Detailed Description

Process handle.

Process handles will spawn a new process and allow the user to control it and establish communication channels with it using streams.

Constructor & Destructor Documentation

◆ Process()

wpi::uv::Process::Process ( const private_init & )

inlineexplicit

◆ ~Process()

wpi::uv::Process::~Process ( )

overridedefaultnoexcept

Member Function Documentation

◆ ClearFlags()

static Option wpi::uv::Process::ClearFlags ( unsigned int flags )

inlinestatic

Clear spawn flags.

Parameters

flags Bitmask values from uv_process_flags.

◆ Cwd()

static Option wpi::uv::Process::Cwd ( std::string_view cwd )

inlinestatic

Set the current working directory for the subprocess.

Parameters

cwd	current working directory

◆ DisableStdioInheritance()

static void wpi::uv::Process::DisableStdioInheritance ( )

inlinestatic

Disables inheritance for file descriptors / handles that this process inherited from its parent.

The effect is that child processes spawned by this process don't accidentally inherit these handles.

It is recommended to call this function as early in your program as possible, before the inherited file descriptors can be closed or duplicated.

◆ Env()

static Option wpi::uv::Process::Env ( std::string_view env )

inlinestatic

Set environment variable for the subprocess.

If not set, the parent's environment is used.

Parameters

env	environment variable

◆ GetPid()

uv_pid_t wpi::uv::Process::GetPid ( ) const

inlinenoexcept

Get the process ID.

Returns: Process ID.

◆ Gid()

static Option wpi::uv::Process::Gid ( uv_gid_t gid )

inlinestatic

Set the child process' group id.

Parameters

gid group id

◆ Kill() [1/2]

static int wpi::uv::Process::Kill	(	int	pid,
		int	signum
	)

inlinestaticnoexcept

Sends the specified signal to the given PID.

Parameters

pid	process ID
signum	signal number

Returns: 0 on success, otherwise error code.

◆ Kill() [2/2]

void wpi::uv::Process::Kill ( int signum )

inline

Sends the specified signal to the process.

Parameters

signum signal number

◆ SetFlags()

static Option wpi::uv::Process::SetFlags ( unsigned int flags )

inlinestatic

Set spawn flags.

Parameters

flags Bitmask values from uv_process_flags.

◆ Spawn() [1/2]

template<typename... Args>

static std::shared_ptr< Process > wpi::uv::Process::Spawn	(	const std::shared_ptr< Loop > &	loop,
		std::string_view	file,
		const Args &...	options
	)

inlinestatic

◆ Spawn() [2/2]

template<typename... Args>

static std::shared_ptr< Process > wpi::uv::Process::Spawn	(	Loop &	loop,
		std::string_view	file,
		const Args &...	options
	)

inlinestatic

◆ SpawnArray() [1/4]

static std::shared_ptr< Process > wpi::uv::Process::SpawnArray	(	const std::shared_ptr< Loop > &	loop,
		std::string_view	file,
		std::initializer_list< Option >	options
	)

inlinestatic

◆ SpawnArray() [2/4]

static std::shared_ptr< Process > wpi::uv::Process::SpawnArray	(	const std::shared_ptr< Loop > &	loop,
		std::string_view	file,
		std::span< const Option >	options
	)

inlinestatic

Starts a process.

If the process is not successfully spawned, an error is generated on the loop and this function returns nullptr.

Possible reasons for failing to spawn would include (but not be limited to) the file to execute not existing, not having permissions to use the setuid or setgid specified, or not having enough memory to allocate for the new process.

Parameters

loop	Loop object where this handle runs.
file	Path pointing to the program to be executed
options	Process options

◆ SpawnArray() [3/4]

static std::shared_ptr< Process > wpi::uv::Process::SpawnArray	(	Loop &	loop,
		std::string_view	file,
		std::initializer_list< Option >	options
	)

inlinestatic

◆ SpawnArray() [4/4]

static std::shared_ptr< Process > wpi::uv::Process::SpawnArray	(	Loop &	loop,
		std::string_view	file,
		std::span< const Option >	options
	)

static

Starts a process.

If the process is not successfully spawned, an error is generated on the loop and this function returns nullptr.

Possible reasons for failing to spawn would include (but not be limited to) the file to execute not existing, not having permissions to use the setuid or setgid specified, or not having enough memory to allocate for the new process.

Parameters

loop	Loop object where this handle runs.
file	Path pointing to the program to be executed
options	Process options

◆ StdioCreatePipe()

static Option wpi::uv::Process::StdioCreatePipe	(	size_t	index,
		Pipe &	pipe,
		unsigned int	flags
	)

inlinestatic

Create a pipe between the child and the parent.

Parameters

index	stdio index
pipe	pipe
flags	Some combination of UV_READABLE_PIPE, UV_WRITABLE_PIPE, and UV_OVERLAPPED_PIPE (Windows only, ignored on Unix).

◆ StdioIgnore()

static Option wpi::uv::Process::StdioIgnore ( size_t index )

inlinestatic

Explicitly ignore a stdio.

Parameters

index stdio index

◆ StdioInherit() [1/2]

static Option wpi::uv::Process::StdioInherit	(	size_t	index,
		int	fd
	)

inlinestatic

Inherit a file descriptor from the parent process.

Parameters

index	stdio index
fd	parent file descriptor

◆ StdioInherit() [2/2]

static Option wpi::uv::Process::StdioInherit	(	size_t	index,
		Pipe &	pipe
	)

inlinestatic

Inherit a pipe from the parent process.

Parameters

index	stdio index
pipe	pipe

◆ Uid()

static Option wpi::uv::Process::Uid ( uv_uid_t uid )

inlinestatic

Set the child process' user id.

Parameters

uid user id

Member Data Documentation

◆ exited

sig::Signal<int64_t, int> wpi::uv::Process::exited

Signal generated when the process exits.

The parameters are the exit status and the signal that caused the process to terminate, if any.

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

wpinet/uv/Process.h

Classes

Public Member Functions

Static Public Member Functions

Public Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ Process()

◆ ~Process()

Member Function Documentation

◆ ClearFlags()

◆ Cwd()

◆ DisableStdioInheritance()

◆ Env()

◆ GetPid()

◆ Gid()

◆ Kill() [1/2]

◆ Kill() [2/2]

◆ SetFlags()

◆ Spawn() [1/2]

◆ Spawn() [2/2]

◆ SpawnArray() [1/4]

◆ SpawnArray() [2/4]

◆ SpawnArray() [3/4]

◆ SpawnArray() [4/4]

◆ StdioCreatePipe()

◆ StdioIgnore()

◆ StdioInherit() [1/2]

◆ StdioInherit() [2/2]

◆ Uid()

Member Data Documentation

◆ exited