ost_Lockfile (3)

#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.

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

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 ()\fC [inline]\fP

Destroy the current lock and release it.

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.

Returns:

true if lock successful.

Parameters:

name system-wide lock to use.

void ost::Lockfile::unlock (void)

Release an acquired lock.

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