man ost_Lockfile (Fonctions bibliothèques) - This class is used to create a 'named' lock entity that can be used to control access to a resource between multiple processes.System-wide named lock.

NAME

ost::Lockfile - This class is used to create a 'named' lock entity that can be used to control access to a resource between multiple processes.System-wide named lock.

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.System-wide named lock.

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

Author: David Sugar <dyfet@ostel.com>

Constructor & Destructor Documentation

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

Create a lock under a known name.

Parameters: system-wide name of lock

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.

Returns: true if lock successful.

Parameters: system-wide name to use.

void ost::Lockfile::unlock (void)

Release an acquired lock.

Author

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