Lockfile Class Reference

This class is used to create a "named" lock entity that can be used to control access to a resource between multiple processes. More...

#include <process.h>

Collaboration diagram for Lockfile:

Public Member Functions
	Lockfile (const char *name)
	Create a lock under a known name. More...
	Lockfile ()
	Create a new lock object that can be used to make locks. More...
	~Lockfile ()
	Destroy the current lock and release it. More...
bool	lock (const char *name)
	Lock a system-wide name for this process. More...
void	unlock (void)
	Release an acquired lock. More...
bool	isLocked (void)
	Flag if the current process has aqcuired a lock. More...

Private Attributes
char *	_path

Detailed Description

This class is used to create a "named" lock entity that can be used to control access to a resource between multiple processes.

The posix implimentation uses a pidfile and the win32 version uses a globally visible mutex.

Author

David Sugar dyfet.nosp@m.@ost.nosp@m.el.co.nosp@m.m System-wide named lock

Definition at line 259 of file process.h.

Constructor & Destructor Documentation

Lockfile::Lockfile

(

const char *

name

)

Create a lock under a known name.

Parameters

name	of system-wide lock to create.

Lockfile::Lockfile

(

)

Create a new lock object that can be used to make locks.

Lockfile::~Lockfile ( )

inline

Destroy the current lock and release it.

Definition at line 285 of file process.h.

Member Function Documentation

bool Lockfile::isLocked

(

void

)

Flag if the current process has aqcuired a lock.

Returns

true if we have the lock.

bool Lockfile::lock

(

const char *

name

)

Lock a system-wide name for this process.

If the lock is successful, return true. If an existing lock was already acquired, release it first.

Returns

true if lock successful.

Parameters

name	system-wide lock to use.

void Lockfile::unlock

(

void

)

Release an acquired lock.

Field Documentation

char* Lockfile::_path

private

Definition at line 266 of file process.h.

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

• process.h