From: Derick Rethans <derick@php.net>
Date: Mon, 8 Aug 2011 07:42:58 +0000 (+0000)
Subject: - Document the new ZEND_DONT_UNLOAD_MODULES environment variable.
X-Git-Tag: php-5.4.0beta1~479
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=4a73e35168fa1ea848a7b73bb39bc7770ffa3f3f;p=php

- Document the new ZEND_DONT_UNLOAD_MODULES environment variable.
---

diff --git a/Zend/README.ZEND_MM b/Zend/README.ZEND_MM
index cf9a9b7e83..60c22556be 100644
--- a/Zend/README.ZEND_MM
+++ b/Zend/README.ZEND_MM
@@ -9,7 +9,7 @@ allocation overhead and speedup memory management.
 
 The new manager's "configure" has no "--disable-zend-memory-manager" option,
 but it has "--enable-malloc-mm" instead.  It is enabled by default in DEBUG
-build and disabled by default in RELEASE build.  when enabled it allows selecting
+build and disabled by default in RELEASE build. When enabled it allows selecting
 between malloc and emalloc at runtime so you can use internal and external memory
 debuggers without recompilation.
 
@@ -24,6 +24,15 @@ Zend MM disabled:
 
     $ USE_ZEND_ALLOC=0 valgrind --leak-check=full sapi/cli/php -r 'leak();'
 
+Shared extensions:
+------------------
+
+Since PHP 5.4 it is possible to prevent shared extensions from unloading so
+that valgrind can correctly track the memory leaks in shared extensions. For
+this there is the ZEND_DONT_UNLOAD_MODULES environment variable. If set, then
+DL_UNLOAD() is skipped during the shutdown of shared extensions.
+
+
 Tweaking:
 ---------