Generated from commit: c8c5e14

Signed-off-by: genie-openj9 <[email protected]>

version0.49/index.html

@@ -431,6 +431,15 @@
     </span>
   </a>
 
+</li>
+
+          <li class="md-nav__item">
+  <a href="#change-to-the-shared-classes-cache-generation-number" class="md-nav__link">
+    <span class="md-ellipsis">
+      Change to the shared classes cache generation number
+    </span>
+  </a>
+
 </li>
 
       </ul>
@@ -8909,6 +8918,15 @@
     </span>
   </a>
 
+</li>
+
+          <li class="md-nav__item">
+  <a href="#change-to-the-shared-classes-cache-generation-number" class="md-nav__link">
+    <span class="md-ellipsis">
+      Change to the shared classes cache generation number
+    </span>
+  </a>
+
 </li>
 
       </ul>
@@ -8967,12 +8985,17 @@ <h1 id="whats-new-in-version-0490">What's new in version 0.49.0</h1>
 <p>The following new features and notable changes since version 0.48.0 are included in this release:</p>
 <ul>
 <li><a href="#binaries-and-supported-environments">New binaries and changes to supported environments</a></li>
+<li><a href="#change-to-the-shared-classes-cache-generation-number">Change to the shared classes cache generation number</a></li>
 </ul>
 <h2 id="features-and-changes">Features and changes</h2>
 <h3 id="binaries-and-supported-environments">Binaries and supported environments</h3>
 <p>Eclipse OpenJ9&trade; release 0.49.0 supports OpenJDK 8, 11, 17, 21, and 23.</p>
 <p>macOS 12 is out of support and is removed from the list of supported platforms.</p>
 <p>To learn more about support for OpenJ9 releases, including OpenJDK levels and platform support, see <a href="../openj9_support/">Supported environments</a>.</p>
+<h3 id="change-to-the-shared-classes-cache-generation-number">Change to the shared classes cache generation number</h3>
+<p>The shared classes cache generation number is incremented. The increment in the shared classes cache generation number causes the VM to create a new shared classes cache, rather than re-creating or reusing an existing cache.</p>
+<p>To save space, all existing shared caches can be removed unless they are in use by an earlier release. For more information, see <a href="../shrc/#housekeeping">Housekeeping</a> and <a href="../xshareclasses/"><code>-Xshareclasses</code></a>.</p>
+<p>The shared classes cache generation number is modified because of a change in the format of ROMClasses that are stored in the shared classes cache. A new flag <code>J9AccClassIsShared</code> is added to ROMClasses to indicate whether a ROMClass was loaded from a shared classes cache or from a VM.</p>
 <h2 id="known-problems-and-full-release-information">Known problems and full release information</h2>
 <p>To see known problems and a complete list of changes between Eclipse OpenJ9 v0.48.0 and v0.49.0 releases, see the <a href="https://github.com/eclipse-openj9/openj9/blob/master/doc/release-notes/0.49/0.49.md">Release notes</a>.</p>
 <!-- ==== END OF TOPIC ==== version0.49.md ==== -->