File: include/datasources/SHMSource.lib

<?php

/*
    SHMSource.lib, DomCore, the WebAbility(r) Core System
    Contains the shared memory access object
    (c) 2008-2012 Philippe Thomassigny

    This file is part of DomCore

    DomCore is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    DomCore is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with DomCore.  If not, see <http://www.gnu.org/licenses/>.
*/

/* @UML_Box -- Do not edit
|------------------------------------------------------------------|
| SHMSource : Shared memory access                                 |
|------------------------------------------------------------------|
| # SHM : WASHM instance                                           |
|------------------------------------------------------------------|
| + new SHMSource($id: varchar, $SHM: WASHM instance)              |
| + isValid() : boolean                                            |
| + getTimestamp() : integer                                       |
| + read() : mixed                                                 |
| + write($data: mixed) : void                                     |
| + unlink() : void                                                |
|------------------------------------------------------------------|
|------------------------------------------------------------------|
@End_UML_Box */

class SHMSource extends DataSource
{
  protected $SHM;

  public function __construct($id, $SHM)
  {
    parent::__construct($id);
    if (self::$debug || $this->localdebug)
      $this->doDebug("common/SHMSource->__construct($id)", WADebug::SYSTEM);
    $this->SHM = $SHM;
  }

  public function isValid()
  {
    return $this->SHM->__isset($this->data);
  }

  public function getTimeStamp()
  {
    return $this->SHM->lastwrite($this->data);
  }

  public function read()
  {
    return $this->SHM->read($this->data);
  }

  public function write($data)
  {
    $this->SHM->write($this->data, $data);
  }

  public function unlink()
  {
    $this->SHM->delete($this->data);
  }
}

?>