Differential D19688 Diff 47062 src/cache/PhutilAPCKeyValueCache.php

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src/cache/PhutilAPCKeyValueCache.php

This file was added.

				<?php

				/**
				* Interface to the APC key-value cache. This is a very high-performance cache
				* which is local to the current machine.
				*/
				final class PhutilAPCKeyValueCache extends PhutilKeyValueCache {


				/* -( Key-Value Cache Implementation )------------------------------------- */


				public function isAvailable() {
				return (function_exists('apc_fetch') \|\| function_exists('apcu_fetch')) &&
				ini_get('apc.enabled') &&
				(ini_get('apc.enable_cli') \|\| php_sapi_name() != 'cli');
				}

				public function getKeys(array $keys, $ttl = null) {
				static $is_apcu;
				if ($is_apcu === null) {
				$is_apcu = self::isAPCu();
				}

				$results = array();
				$fetched = false;
				foreach ($keys as $key) {
				if ($is_apcu) {
				$result = apcu_fetch($key, $fetched);
				} else {
				$result = apc_fetch($key, $fetched);
				}

				if ($fetched) {
				$results[$key] = $result;
				}
				}
				return $results;
				}

				public function setKeys(array $keys, $ttl = null) {
				static $is_apcu;
				if ($is_apcu === null) {
				$is_apcu = self::isAPCu();
				}

				// NOTE: Although modern APC supports passing an array to `apc_store()`,
				// it is not supported by older version of APC or by HPHP.

				foreach ($keys as $key => $value) {
				if ($is_apcu) {
				apcu_store($key, $value, $ttl);
				} else {
				apc_store($key, $value, $ttl);
				}
				}

				return $this;
				}

				public function deleteKeys(array $keys) {
				static $is_apcu;
				if ($is_apcu === null) {
				$is_apcu = self::isAPCu();
				}

				foreach ($keys as $key) {
				if ($is_apcu) {
				apcu_delete($key);
				} else {
				apc_delete($key);
				}
				}

				return $this;
				}

				public function destroyCache() {
				static $is_apcu;
				if ($is_apcu === null) {
				$is_apcu = self::isAPCu();
				}

				if ($is_apcu) {
				apcu_clear_cache();
				} else {
				apc_clear_cache('user');
				}

				return $this;
				}

				private static function isAPCu() {
				return function_exists('apcu_fetch');
				}

				}