isc::util::PIDFile Class Reference

Class to help with processing PID files. More...

#include <pid_file.h>

Public Member Functions
	PIDFile (const std::string &filename)
	Constructor.
	~PIDFile ()
	Destructor.
int	check () const
	Read the PID in from the file and check it.
void	deleteFile () const
	Delete the PID file.
std::string	getFilename () const
	Returns the path to the PID file.
void	write () const
	Get PID of the current process and write it to the file.
void	write (int) const
	Write the PID to the file.

Detailed Description

Class to help with processing PID files.

This is a utility class to manipulate PID file. It provides functions for writing and deleting a file containing a PID as well as for extracting a PID from a file and checking if the process is still running.

Definition at line 40 of file pid_file.h.

Constructor & Destructor Documentation

PIDFile()

isc::util::PIDFile::PIDFile

(

const std::string &

filename

)

Constructor.

Parameters

filename

PID filename.

Definition at line 18 of file pid_file.cc.

~PIDFile()

isc::util::PIDFile::~PIDFile

(

)

Destructor.

Definition at line 22 of file pid_file.cc.

Member Function Documentation

check()

int isc::util::PIDFile::check

(

)

const

Read the PID in from the file and check it.

Read the PID in from the file then use it to see if a process with that PID exists. If the file doesn't exist treat it as the process not being there. If the file exists but can't be read or it doesn't have the proper format treat it as the process existing.

Returns

returns the PID if it is in, 0 otherwise.

Exceptions

throws

PIDCantReadPID if it was able to open the file but was unable to read the PID from it.

Definition at line 26 of file pid_file.cc.

References isc_throw.

Referenced by isc::lfc::LFCController::launch().

deleteFile()

void isc::util::PIDFile::deleteFile

(

)

const

Delete the PID file.

Exceptions

throws

PIDFileError if it can't delete the PID file

Definition at line 84 of file pid_file.cc.

References isc_throw.

Referenced by isc::lfc::LFCController::launch().

getFilename()

std::string isc::util::PIDFile::getFilename ( ) const

inline

Returns the path to the PID file.

Definition at line 82 of file pid_file.h.

write() [1/2]

void isc::util::PIDFile::write

(

)

const

Get PID of the current process and write it to the file.

Exceptions

throws

PIDFileError if it can't open or write to the PID file.

Definition at line 58 of file pid_file.cc.

References write().

Referenced by write().

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write() [2/2]

void isc::util::PIDFile::write

(

int

pid

)

const

Write the PID to the file.

Parameters

pid	the pid to write to the file.

Exceptions

throws

PIDFileError if it can't open or write to the PID file.

Definition at line 63 of file pid_file.cc.

References isc_throw.

Referenced by isc::lfc::LFCController::launch().

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

• pid_file.h
• pid_file.cc