Itzam/C++

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Created by Scott Robert Ladd at Coyote Gulch Productions.

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itzam::simple_mutex Class Reference

A simple mutual exclusion lock. More...

#include <itzam_common.h>

Inheritance diagram for itzam::simple_mutex:

List of all members.

Public Member Functions

• simple_mutex ()

  Constructor.
  

• virtual ~simple_mutex ()

  Destructor.
  

• virtual void lock ()

  Lock a database.
  

• virtual void unlock ()

  Unlock a database.
  

• virtual void sleep ()

  Yield to other processes.
  

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Detailed Description

This lock is a simple boolean flag, using the SUSv2 function usleep to implement a yield for other processes.

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Constructor & Destructor Documentation

itzam::simple_mutex::simple_mutex (   )  [inline]

Creates a new simple_mutex, with the lock set to false.

virtual itzam::simple_mutex::~simple_mutex (   )  [inline, virtual]

Does nothing.

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Member Function Documentation

virtual void itzam::simple_mutex::lock (   )  [inline, virtual]

Attempts to lock a database resource. If the resource is already locked, this function should block, calling sleep() and then attempting to lock the resource again. Implements itzam::mutex.

virtual void itzam::simple_mutex::sleep (   )  [inline, virtual]

This function calls the SUSv2 version of usleep() to enable other processes to run while the calling process is waiting for a resource to be released. Implements itzam::mutex.

virtual void itzam::simple_mutex::unlock (   )  [inline, virtual]

Unlock a database resource, allowing other processes access. Implements itzam::mutex.

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

• itzam_common.h

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© 1996-2005 Scott Robert Ladd. All rights reserved.
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