Schedulling Malleable Task with Convex Processing Speed Functions

Fuente: Redalyc

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Détails bibliographiques
Auteur principal:	Jacek Blazewicz
Format:	Artículo científico
Langue:	en
Publié:	Instituto Politécnico Nacional 2000
Sujets:	Computación
Accès en ligne:	Acceder al recurso
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author	Jacek Blazewicz
author_facet	Jacek Blazewicz
contents	Schedulling Malleable Task with Convex Processing Speed Functions Jacek Blazewicz Maciej Machowiak Jan Weglarz Gragory Mounie Denis Tristram Computación 2000 artículo científico 1405-5546 https://www.redalyc.org/articulo.oa?id=61540208 en http://www.redalyc.org/revista.oa?id=615 Computación y Sistemas application/pdf Instituto Politécnico Nacional Computación y Sistemas (México) Num.2 Vol.4
format	Artículo científico
id	redalyc_61540208
institution	Redalyc
language	en
publishDate	2000
publisher	Instituto Politécnico Nacional
spellingShingle	Schedulling Malleable Task with Convex Processing Speed Functions Jacek Blazewicz Computación Schedulling Malleable Task with Convex Processing Speed Functions Jacek Blazewicz Maciej Machowiak Jan Weglarz Gragory Mounie Denis Tristram Computación 2000 artículo científico 1405-5546 https://www.redalyc.org/articulo.oa?id=61540208 en http://www.redalyc.org/revista.oa?id=615 Computación y Sistemas application/pdf Instituto Politécnico Nacional Computación y Sistemas (México) Num.2 Vol.4
title	Schedulling Malleable Task with Convex Processing Speed Functions
topic	Computación
url	https://www.redalyc.org/articulo.oa?id=61540208

if (filemtime($filename) + $maxlifetime < time()) { unlink($filename); $count++; } } return $count; } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ protected function saveSession($sessId, $data): bool { $sessFile = $this->path . '/sess_' . $sessId; if ($handle = fopen($sessFile, 'w')) { $return = false; // Lock the file for exclusive access to avoid issues with multiple // processes writing session simultaneously: if (flock($handle, LOCK_EX)) { $return = fwrite($handle, $data); // Make sure that there's no trailing data by truncating the file to // the correct length: ftruncate($handle, strlen($data)); fflush($handle); flock($handle, LOCK_UN); } fclose($handle); if ($return !== false) { return true; } } // If we got this far, something went wrong with the file output... // It is tempting to throw an exception here, but this code is called // outside of the context of exception handling, so all we can do is // echo a message.

// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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