Command Class Reference

Parameters for process creation. More...

#include <cc/Command>

Inheritance diagram for Command:

Public Member Functions
	Command ()
	Create a new command.
	Command (const String &command)
	Create a new command with executable name and arguments extracted from command.
Command &	args (const List< String > &args)
	Set command line arguments to args (args[0] provides the executable name)
Command &	env (const Map< String > &map)
	Set environment map to map
Command &	group (int groupId=0)
	Set the process group to groupId (pass zero to start a new process group)
Command &	signalMask (const SignalSet &mask)
	Set the signal mask to mask
Command &	signalDefault (const SignalSet &set)
	Reset signal handling strategy to the default for the signals in set.
Command &	workDir (const String &path)
	Set initial working directory to path
Command &	io (int fd, const IoChannel &channel)
	Setup I/O channel channel to appear in the child's files descriptor table under fd.
Command &	io (int fd, const IoStream &stream)
	Setup I/O stream stream to appear in the child's files descriptor table under fd.
Public Member Functions inherited from Object
	Object ()=default
	Create a null object.
	operator bool () const
	Check if this is a non-null object.
bool	isNull () const
	Check if this is a null object.
template<class T >
bool	is () const
	Check if this object is of type T.
template<class T >
T	as () const
	Cast this object to type T.
bool	isWeak () const
	Check if the underlying object reference is weak.
bool	operator== (const Object &other) const
	Equality operator.
std::strong_ordering	operator<=> (const Object &other) const
	Ordering operator.
long	useCount () const
	Reference count.

Additional Inherited Members
Protected Member Functions inherited from Object
template<class T >
T	weak () const
template<class T >
void	initOnce ()
	Create the object state when called the first time.
template<class T >
void	initOncePerThread ()
	Create a distinct object state for each thread when called the first time in that thread.
	Object (State *newState)
	Initialize object with newState.
	Object (State *state, Alias)
	Object (State *state, Weak)
Object &	operator= (std::nullptr_t)
Static Protected Member Functions inherited from Object
template<class T >
static T	alias (const State *state)
	Create an alias object for the given state.
template<class T >
static T	weak (const State *state)
Protected Attributes inherited from Object
Handle< State >	me
	Internal object state

Detailed Description

Parameters for process creation.

Exceptions

SystemError

Constructor & Destructor Documentation

Command() [1/2]

Command

(

)

Create a new command.

Command() [2/2]

Command ( const String & command )

explicit

Create a new command with executable name and arguments extracted from command.

Member Function Documentation

args()

Command & args

(

const List< String > &

args

)

Set command line arguments to args (args[0] provides the executable name)

env()

Command & env

(

const Map< String > &

map

)

Set environment map to map

group()

Command & group

(

int

groupId = 0

)

Set the process group to groupId (pass zero to start a new process group)

signalMask()

Command & signalMask

(

const SignalSet &

mask

)

Set the signal mask to mask

signalDefault()

Command & signalDefault

(

const SignalSet &

set

)

Reset signal handling strategy to the default for the signals in set.

workDir()

Command & workDir

(

const String &

path

)

Set initial working directory to path

Warning

This method is not thread-safe on all platforms! This is especially true on glibc before v2.29.

io() [1/2]

Command & io	(	int	fd,
		const IoChannel &	channel )

Setup I/O channel channel to appear in the child's files descriptor table under fd.

io() [2/2]

Command & io	(	int	fd,
		const IoStream &	stream )

Setup I/O stream stream to appear in the child's files descriptor table under fd.