Diseño de sistemas digitales con VHDL /

Detalles Bibliográficos
Autor Principal:	Pérez López, Serafín Alfonso
Otros autores o Colaboradores:	Soto Campos, Enrique, Fernández Gómez, Santiago
Formato:	Libro
Lengua:	español
Datos de publicación:	Madrid: Thomson; 2002.
Temas:	VHDL SISTEMAS DIGITALES SISTEMAS ELECTRONICOS DIGITALES
Descripción Física:	346 p.: figuras.
ISBN:	8497320816

MARC


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041			\|a spa
080			\|a 681.325
100	1		\|a Pérez López, Serafín Alfonso. \|9 317771
245	1		\|a Diseño de sistemas digitales con VHDL / \|c Serafín Alfonso Pérez López, Enrique Soto Campos, Santiago Fernández Gómez.
260			\|a Madrid: \|b Thomson; \|c 2002.
300			\|a 346 p.: \|b figuras.
505			\|a Lenguajes de descripción del hardware - Fundamentos del lenguaje - Elementos del lenguaje - Declaraciones básicas - VHDL concurrente y secuencial - Aspectos avanzados del lenguaje - Paquetes y bibliotecas - Análisis y simulación de un diseño - Ejemplos prácticos - Síntesis - Glosarios - Paquetes normalizados más importantes - Sintaxis normativa.
650		4	\|a VHDL \|9 278952
650		4	\|a SISTEMAS DIGITALES \|9 264040
650		4	\|a SISTEMAS ELECTRONICOS DIGITALES \|9 317772
700	1		\|a Soto Campos, Enrique. \|9 317773
700	1		\|a Fernández Gómez, Santiago. \|9 317774
929			\|a DON \|b Boiero
942			\|c LIB \|6 _
999			\|c 30907 \|d 30907
999			\|a GEB

foreach (glob($this->path . '/sess_*') as $filename) { if (filemtime($filename) + $maxlifetime < time()) { unlink($filename); } } return true; } /** * 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 true; } /** * 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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Diseño de sistemas digitales con VHDL /

MARC

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