man ost::Lockfile (3): This class is used to create a 'named' lock entity that can be used to control access to a resource between multiple processes.

SYNOPSIS

#include <process.h>

Public Member Functions

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

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 [email protected] System-wide named lock

Constructor & Destructor Documentation

ost::Lockfile::Lockfile (const char * name)

Create a lock under a known name.

Parameters:

: name of system-wide lock to create.

ost::Lockfile::Lockfile ()

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

ost::Lockfile::~Lockfile () [inline]

Destroy the current lock and release it.

Member Function Documentation

bool ost::Lockfile::isLocked (void)

Flag if the current process has aqcuired a lock.

Returns:

: true if we have the lock.

bool ost::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.