wreport::subprocess::Child Class Reference

Inheritance diagram for wreport::subprocess::Child:

Public Member Functions
int	get_stdin () const
	Return the file descriptor to the stdin pipe to the child process, if configured, else -1.
int	get_stdout () const
	Return the file descriptor to the stdout pipe from the child process, if configured, else -1.
int	get_stderr () const
	Return the file descriptor to the stderr pipe from the child process, if configured, else -1.
void	set_stdin (int fd)
	Request to redirect the child stdin to this given file descriptor.
void	set_stdin (Redirect val)
	Request to redirect the child stdin according to val.
void	set_stdout (int fd)
	Request to redirect the child stdout to this given file descriptor.
void	set_stdout (Redirect val)
	Request to redirect the child stdout according to val.
void	set_stderr (int fd)
	Request to redirect the child stderr to this given file descriptor.
void	set_stderr (Redirect val)
	Request to redirect the child stderr according to val.
void	close_stdin ()
	Close the pipe to the child process stdin.
void	close_stdout ()
	Close the pipe from the child process stdout.
void	close_stderr ()
	Close the pipe from the child process stderr.
	Child (const Child &)=delete
	Child (Child &&)=delete
Child &	operator= (const Child &)=delete
Child &	operator= (Child &&)=delete
void	fork ()
	Start the child process.
pid_t	pid () const
	Return the PID of the subprocess, or 0 if it has not started yet.
int	returncode () const
	Return the return code of the subprocess; this is undefined if it has not terminated yet.
int	raw_returncode () const
	Return the raw return code as returned by wait(2)
bool	started () const
	Return true if the process has started.
bool	terminated () const
	Return true if the process has terminated.
bool	poll ()
	Check if the process has terminated. Returns true if it has.
int	wait ()
	Wait for the child process to terminate and return its return code.
void	send_signal (int sig)
	Send the given signal to the process.
void	terminate ()
	Send SIGTERM to the process.
void	kill ()
	Send SIGKILL to the process.

Static Public Member Functions
static std::string	format_raw_returncode (int raw_returncode)
	Format the status code returned by wait(2)

Data Fields
bool	close_fds = true
	After fork, close all file descriptors >=2 in the child.
std::vector< int >	pass_fds
	Do not close these file descriptors in the child process (implies close_fds = true)
std::string	cwd
	Change to this directory in the child process.
bool	start_new_session = false
	If true, call setsid() in the child process.

Protected Member Functions
virtual void	pre_fork ()
	Function called before forking.
virtual void	post_fork_parent ()
	Function called after fork in the parent process.
virtual void	post_fork_child ()
	Function called after fork in the child process.
virtual int	main () noexcept=0
	Main function called in the child process. More...

Protected Attributes
pid_t	m_pid = 0
int	m_returncode = 0
bool	m_terminated = false
int	m_stdin [2] = { -1, -1 }
int	m_stdout [2] = { -1, -1 }
int	m_stderr [2] = { -1, -1 }
Redirect	m_stdin_action = Redirect::UNCHANGED
Redirect	m_stdout_action = Redirect::UNCHANGED
Redirect	m_stderr_action = Redirect::UNCHANGED

Member Function Documentation

main()

virtual int wreport::subprocess::Child::main ( )

protectedpure virtualnoexcept

Main function called in the child process.

Its result will be used as the return code for the process.

Implemented in wreport::subprocess::Popen.

---

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

• subprocess.h