# HG changeset patch
# User tschatzl
# Date 1379319645 -7200
# Node ID 23ae5a04724d9171705270a6d8e4f879e9425826
# Parent  9cb63cd234a0ffe52c28879160788f85e4bc1482
8024396: VM crashing with assert(!UseLargePages || UseParallelOldGC || use_large_pages) failed: Wrong alignment to use large pages
Summary: Loosen wrong assert for UseParallelOldGC to UseParallelGC
Reviewed-by: stefank, brutisso

diff -r 9cb63cd234a0 -r 23ae5a04724d src/share/vm/memory/universe.cpp
--- a/src/share/vm/memory/universe.cpp	Fri Sep 13 07:57:13 2013 +0200
+++ b/src/share/vm/memory/universe.cpp	Mon Sep 16 10:20:45 2013 +0200
@@ -881,7 +881,7 @@
 
   bool use_large_pages = UseLargePages && is_size_aligned(alignment, os::large_page_size());
   assert(!UseLargePages
-      || UseParallelOldGC
+      || UseParallelGC
       || use_large_pages, "Wrong alignment to use large pages");
 
   char* addr = Universe::preferred_heap_base(total_reserved, alignment, Universe::UnscaledNarrowOop);
diff -r 9cb63cd234a0 -r 23ae5a04724d test/gc/arguments/TestAlignmentToUseLargePages.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/gc/arguments/TestAlignmentToUseLargePages.java	Mon Sep 16 10:20:45 2013 +0200
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * @test TestAlignmentToUseLargePages
+ * @summary All parallel GC variants may use large pages without the requirement that the
+ * heap alignment is large page aligned. Other collectors also need to start up with odd sized heaps.
+ * @bug 8024396
+ * @key gc
+ * @key regression
+ * @run main/othervm -Xms7M -Xmx9M -XX:+UseParallelGC -XX:-UseParallelOldGC -XX:+UseLargePages TestAlignmentToUseLargePages
+ * @run main/othervm -Xms7M -Xmx9M -XX:+UseParallelGC -XX:-UseParallelOldGC -XX:-UseLargePages TestAlignmentToUseLargePages
+ * @run main/othervm -Xms7M -Xmx9M -XX:+UseParallelGC -XX:+UseParallelOldGC -XX:+UseLargePages TestAlignmentToUseLargePages
+ * @run main/othervm -Xms7M -Xmx9M -XX:+UseParallelGC -XX:+UseParallelOldGC -XX:-UseLargePages TestAlignmentToUseLargePages
+ * @run main/othervm -Xms7M -Xmx9M -XX:+UseSerialGC -XX:+UseLargePages TestAlignmentToUseLargePages
+ * @run main/othervm -Xms7M -Xmx9M -XX:+UseSerialGC -XX:-UseLargePages TestAlignmentToUseLargePages
+ * @run main/othervm -Xms7M -Xmx9M -XX:+UseConcMarkSweepGC -XX:+UseLargePages TestAlignmentToUseLargePages
+ * @run main/othervm -Xms7M -Xmx9M -XX:+UseConcMarkSweepGC -XX:-UseLargePages TestAlignmentToUseLargePages
+ * @run main/othervm -Xms7M -Xmx9M -XX:+UseG1GC -XX:+UseLargePages TestAlignmentToUseLargePages
+ * @run main/othervm -Xms7M -Xmx9M -XX:+UseG1GC -XX:-UseLargePages TestAlignmentToUseLargePages
+ */
+
+public class TestAlignmentToUseLargePages {
+  public static void main(String args[]) throws Exception {
+    // nothing to do
+  }
+}