wibble::sys::ChildProcess Class Reference

Fork a child process. More...

#include <childprocess.h>

Inheritance diagram for wibble::sys::ChildProcess:

List of all members.

Public Member Functions
	ChildProcess ()
virtual	~ChildProcess ()
pid_t	fork ()
	For a subprocess to run proc.
pid_t	forkAndRedirect (int *stdinfd=0, int *stdoutfd=0, int *stderrfd=0)
	Fork a subprocess to run proc.
pid_t	pid () const
	Get the pid of the child process or (pid_t)-1 if no child is running.
int	wait ()
	Wait for the child to finish, returing its exit status.
bool	running ()
int	exitStatus ()
void	waitForSuccess ()
int	wait (struct rusage *ru)
	Wait for the child to finish, returing its exit status and storing resource usage informations in `ru'.
void	kill (int signal)
	Send the given signal to the process.

Protected Member Functions
void	waitError ()
virtual int	main ()=0
	Main function to be called in the child process after it has forked.

Protected Attributes
pid_t	_pid
int	m_status

---

Detailed Description

Fork a child process.

---

Constructor & Destructor Documentation

wibble::sys::ChildProcess::ChildProcess ( )

inline

virtual wibble::sys::ChildProcess::~ChildProcess ( )

inlinevirtual

---

Member Function Documentation

int wibble::sys::ChildProcess::exitStatus

(

)

pid_t wibble::sys::ChildProcess::fork

(

)

For a subprocess to run proc.

pid_t wibble::sys::ChildProcess::forkAndRedirect	(	int *	stdinfd = 0,
		int *	stdoutfd = 0,
		int *	stderrfd = 0
	)

Fork a subprocess to run proc.

If one of the std*fd variables is non-null, create a pipe connected to the corresponding file descriptor of the child process and store the parent end in the std*fd variable.

void wibble::sys::ChildProcess::kill

(

int

signal

)

Send the given signal to the process.

virtual int wibble::sys::ChildProcess::main ( )

protectedpure virtual

Main function to be called in the child process after it has forked.

Implemented in wibble::sys::Exec.

pid_t wibble::sys::ChildProcess::pid ( ) const

inline

Get the pid of the child process or (pid_t)-1 if no child is running.

Note: while ChildProcess::kill() has a safeguard against killing pid -1, if you are going to run ::kill on the output of pid() make sure to check what is the semanthics of kill() when pid is -1.

References _pid.

bool wibble::sys::ChildProcess::running

(

)

int wibble::sys::ChildProcess::wait

(

)

Wait for the child to finish, returing its exit status.

Return -1 if no child is running. TODO: gracefully handle the EINTR error code

int wibble::sys::ChildProcess::wait

(

struct rusage *

ru

)

Wait for the child to finish, returing its exit status and storing resource usage informations in `ru'.

Return -1 if no child is running. TODO: gracefully handle the EINTR error code

void wibble::sys::ChildProcess::waitError ( )

protected

void wibble::sys::ChildProcess::waitForSuccess

(

)

---

Member Data Documentation

pid_t wibble::sys::ChildProcess::_pid

protected

Referenced by pid().

int wibble::sys::ChildProcess::m_status

protected

---

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

• childprocess.h