8014851: UseAdaptiveGCBoundary is broken

Reviewed-by: tschatzl, brutisso

hotspot/src/share/vm/gc_implementation/parallelScavenge/asPSOldGen.cpp

@@ -70,6 +70,17 @@ ASPSOldGen::ASPSOldGen(PSVirtualSpace* vs,
   _virtual_space = vs;
 }
 
+void ASPSOldGen::initialize_work(const char* perf_data_name, int level) {
+
+  PSOldGen::initialize_work(perf_data_name, level);
+
+  // The old gen can grow to gen_size_limit().  _reserve reflects only
+  // the current maximum that can be committed.
+  assert(_reserved.byte_size() <= gen_size_limit(), "Consistency check");
+
+  initialize_performance_counters(perf_data_name, level);
+}
+
 void ASPSOldGen::reset_after_change() {
   _reserved = MemRegion((HeapWord*)virtual_space()->low_boundary(),
                         (HeapWord*)virtual_space()->high_boundary());

hotspot/src/share/vm/gc_implementation/parallelScavenge/asPSOldGen.hpp

@@ -50,6 +50,8 @@ class ASPSOldGen : public PSOldGen {
   size_t max_gen_size()                 { return _reserved.byte_size(); }
   void set_gen_size_limit(size_t v)     { _gen_size_limit = v; }
 
+  virtual void initialize_work(const char* perf_data_name, int level);
+
   // After a shrink or expand reset the generation
   void reset_after_change();
 

hotspot/src/share/vm/gc_implementation/parallelScavenge/psOldGen.hpp

@@ -110,7 +110,7 @@ class PSOldGen : public CHeapObj<mtGC> {
   virtual void initialize(ReservedSpace rs, size_t alignment,
                   const char* perf_data_name, int level);
   void initialize_virtual_space(ReservedSpace rs, size_t alignment);
-  void initialize_work(const char* perf_data_name, int level);
+  virtual void initialize_work(const char* perf_data_name, int level);
   virtual void initialize_performance_counters(const char* perf_data_name, int level);
 
   MemRegion reserved() const                { return _reserved; }

hotspot/test/gc/parallelScavenge/AdaptiveGCBoundary.java

@@ -0,0 +1,61 @@
+/*
+ * 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 AdaptiveGCBoundary
+ * @summary UseAdaptiveGCBoundary is broken
+ * @bug 8014546
+ * @key gc
+ * @key regression
+ * @library /testlibrary
+ * @run main/othervm AdaptiveGCBoundary
+ * @author jon.masamitsu@oracle.com
+ */
+
+import com.oracle.java.testlibrary.*;
+
+public class AdaptiveGCBoundary {
+  public static void main(String args[]) throws Exception {
+
+    ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+      "-showversion",
+      "-XX:+UseParallelGC",
+      "-XX:+UseAdaptiveGCBoundary",
+      "-XX:+PrintCommandLineFlags",
+      SystemGCCaller.class.getName()
+      );
+
+    OutputAnalyzer output = new OutputAnalyzer(pb.start());
+
+    output.shouldContain("+UseAdaptiveGCBoundary");
+
+    output.shouldNotContain("error");
+
+    output.shouldHaveExitValue(0);
+  }
+  static class SystemGCCaller {
+    public static void main(String [] args) {
+      System.gc();
+    }
+  }
+}