From 0086965fd08f7f18abd4770eedf1c76c5c99ce6f Mon Sep 17 00:00:00 2001
From: Aaron Schulz <aschulz@wikimedia.org>
Date: Fri, 7 Aug 2015 16:07:37 -0700
Subject: [PATCH] Removed ScopedPHPTimeout; unused

Change-Id: Ic3a3500ddd410c68a30d3f3d1947f632e1aff5fd
---
 RELEASE-NOTES-1.26                 |  1 +
 autoload.php                       |  1 -
 includes/libs/ScopedPHPTimeout.php | 84 ------------------------------
 3 files changed, 1 insertion(+), 85 deletions(-)
 delete mode 100644 includes/libs/ScopedPHPTimeout.php

diff --git a/RELEASE-NOTES-1.26 b/RELEASE-NOTES-1.26
index b4702728fb..7770e74136 100644
--- a/RELEASE-NOTES-1.26
+++ b/RELEASE-NOTES-1.26
@@ -143,6 +143,7 @@ changes to languages because of Phabricator reports.
 * DatabaseBase::ignoreErrors() is now protected.
 * BREAKING CHANGE: mediawiki.legacy.ajax has been removed, following
   a lengthy deprecation period.
+* The ScopedPHPTimeout class was removed.
 
 == Compatibility ==
 
diff --git a/autoload.php b/autoload.php
index a6c7488100..e001805522 100644
--- a/autoload.php
+++ b/autoload.php
@@ -1064,7 +1064,6 @@ $wgAutoloadLocalClasses = array(
 	'SavepointPostgres' => __DIR__ . '/includes/db/DatabasePostgres.php',
 	'ScopedCallback' => __DIR__ . '/includes/libs/ScopedCallback.php',
 	'ScopedLock' => __DIR__ . '/includes/filebackend/lockmanager/ScopedLock.php',
-	'ScopedPHPTimeout' => __DIR__ . '/includes/libs/ScopedPHPTimeout.php',
 	'SearchDatabase' => __DIR__ . '/includes/search/SearchDatabase.php',
 	'SearchDump' => __DIR__ . '/maintenance/dumpIterator.php',
 	'SearchEngine' => __DIR__ . '/includes/search/SearchEngine.php',
diff --git a/includes/libs/ScopedPHPTimeout.php b/includes/libs/ScopedPHPTimeout.php
deleted file mode 100644
index d1493c30b7..0000000000
--- a/includes/libs/ScopedPHPTimeout.php
+++ /dev/null
@@ -1,84 +0,0 @@
-<?php
-/**
- * Expansion of the PHP execution time limit feature for a function call.
- *
- * This program 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 2 of the License, or
- * (at your option) any later version.
- *
- * This program 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 this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- * http://www.gnu.org/copyleft/gpl.html
- *
- * @file
- */
-
-/**
- * Class to expand PHP execution time for a function call.
- * Use this when performing changes that should not be interrupted.
- *
- * On construction, set_time_limit() is called and set to $seconds.
- * If the client aborts the connection, PHP will continue to run.
- * When the object goes out of scope, the timer is restarted, with
- * the original time limit minus the time the object existed.
- */
-class ScopedPHPTimeout {
-	protected $startTime; // float; seconds
-	protected $oldTimeout; // integer; seconds
-	protected $oldIgnoreAbort; // boolean
-
-	protected static $stackDepth = 0; // integer
-	protected static $totalCalls = 0; // integer
-	protected static $totalElapsed = 0; // float; seconds
-
-	/* Prevent callers in infinite loops from running forever */
-	const MAX_TOTAL_CALLS = 1000000;
-	const MAX_TOTAL_TIME = 300; // seconds
-
-	/**
-	 * @param $seconds integer
-	 */
-	public function __construct( $seconds ) {
-		if ( ini_get( 'max_execution_time' ) > 0 ) { // CLI uses 0
-			if ( self::$totalCalls >= self::MAX_TOTAL_CALLS ) {
-				trigger_error( "Maximum invocations of " . __CLASS__ . " exceeded." );
-			} elseif ( self::$totalElapsed >= self::MAX_TOTAL_TIME ) {
-				trigger_error( "Time limit within invocations of " . __CLASS__ . " exceeded." );
-			} elseif ( self::$stackDepth > 0 ) { // recursion guard
-				trigger_error( "Resursive invocation of " . __CLASS__ . " attempted." );
-			} else {
-				$this->oldIgnoreAbort = ignore_user_abort( true );
-				$this->oldTimeout = ini_set( 'max_execution_time', $seconds );
-				$this->startTime = microtime( true );
-				++self::$stackDepth;
-				++self::$totalCalls; // proof against < 1us scopes
-			}
-		}
-	}
-
-	/**
-	 * Restore the original timeout.
-	 * This does not account for the timer value on __construct().
-	 */
-	public function __destruct() {
-		if ( $this->oldTimeout ) {
-			$elapsed = microtime( true ) - $this->startTime;
-			// Note: a limit of 0 is treated as "forever"
-			set_time_limit( max( 1, $this->oldTimeout - (int)$elapsed ) );
-			// If each scoped timeout is for less than one second, we end up
-			// restoring the original timeout without any decrease in value.
-			// Thus web scripts in an infinite loop can run forever unless we
-			// take some measures to prevent this. Track total time and calls.
-			self::$totalElapsed += $elapsed;
-			--self::$stackDepth;
-			ignore_user_abort( $this->oldIgnoreAbort );
-		}
-	}
-}
-- 
2.20.1