ASSA::ChildStatusHandler Class Reference

A helper class of Fork. More...

#include <Fork.h>

Inheritance diagram for ASSA::ChildStatusHandler:

Public Member Functions
	ChildStatusHandler ()
int	handle_signal (int signum_)
	Signal handler callback.
int	exit_status () const
bool	caught () const
Public Member Functions inherited from ASSA::EventHandler
	EventHandler ()
	Constructor.
virtual	~EventHandler ()
	Virtual destructor.
virtual int	handle_read (int fd)
	Read event callback.
virtual int	handle_write (int fd)
	Write handler callback.
virtual int	handle_except (int fd)
	Exception handler callback.
virtual int	handle_timeout (TimerId tid)
	Timeout handler callback.
virtual int	handle_close (int fd)
	EOF on peer socket handler callback.
virtual void	resetState (void)
	A hook for derived class to reset internal state as needed.
void	set_id (const std::string &id_)
	Set EventHandler ID.
std::string	get_id () const
	Retrieve EventHandler ID.

Private Attributes
int	m_exit_status
bool	m_caught

Additional Inherited Members
Protected Attributes inherited from ASSA::EventHandler
std::string	m_id

Detailed Description

A helper class of Fork.

Definition at line 58 of file Fork.h.

Constructor & Destructor Documentation

ChildStatusHandler()

ASSA::ChildStatusHandler::ChildStatusHandler ( )

inline

Definition at line 61 of file Fork.h.

        : m_exit_status (-1), m_caught (false) { /* no-op */ }

References m_caught, and m_exit_status.

Member Function Documentation

caught()

bool ASSA::ChildStatusHandler::caught ( ) const

inline

Returns

true if the signal has been caught; false otherwise

Definition at line 73 of file Fork.h.

{ return m_caught; }

References m_caught.

exit_status()

int ASSA::ChildStatusHandler::exit_status ( ) const

inline

Returns

-1 if failed on wait(); otherwise an exit status of the child process as returned by either RETURN or EXIT

Definition at line 69 of file Fork.h.

{ return m_exit_status; }

References m_exit_status.

handle_signal()

int ChildStatusHandler::handle_signal ( int signum_ )

virtual

Signal handler callback.

Returns

0 on success, -1 on error

Reimplemented from ASSA::EventHandler.

Definition at line 134 of file Fork.cpp.

{
    trace_with_mask("ChildStatusHandler::handle_signal", FORK);
    DL((FORK, "Caught signal # %d\n", signum_));
 
    if (signum_ == SIGCHLD) {
        int status;
        m_caught = true;
        pid_t ret = ::wait (&status);
        DL((FORK,"wait() = %d (PID)\n", ret));
 
        if (ret > 0 && (WIFEXITED (status))) {
            m_exit_status = WEXITSTATUS (status);
        }
        else {
            m_exit_status = ret;
        }
    }
 
    DL((FORK,"child exit_status = %d\n", m_exit_status));
    return 0;
}

References DL, ASSA::FORK, m_caught, m_exit_status, and trace_with_mask.

Member Data Documentation

m_caught

bool ASSA::ChildStatusHandler::m_caught

private

Definition at line 77 of file Fork.h.

Referenced by caught(), ChildStatusHandler(), and handle_signal().

m_exit_status

int ASSA::ChildStatusHandler::m_exit_status

private

Definition at line 76 of file Fork.h.

Referenced by ChildStatusHandler(), exit_status(), and handle_signal().

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

• Fork.h
• Fork.cpp