changeset 5746:dd1b266713ea

8027440: DefNew does not log heap change information when a promotion failure occurs Reviewed-by: tamao, jmasa
author brutisso
date Mon, 16 Dec 2013 13:43:06 +0100
parents ff355e26c78d
children d41bd7e90661
files src/share/vm/memory/defNewGeneration.cpp test/gc/defnew/HeapChangeLogging.java
diffstat 2 files changed, 84 insertions(+), 3 deletions(-) [+]
line wrap: on
line diff
--- a/src/share/vm/memory/defNewGeneration.cpp	Mon Dec 16 08:54:14 2013 +0100
+++ b/src/share/vm/memory/defNewGeneration.cpp	Mon Dec 16 13:43:06 2013 +0100
@@ -667,9 +667,6 @@
     // for full GC's.
     AdaptiveSizePolicy* size_policy = gch->gen_policy()->size_policy();
     size_policy->reset_gc_overhead_limit_count();
-    if (PrintGC && !PrintGCDetails) {
-      gch->print_heap_change(gch_prev_used);
-    }
     assert(!gch->incremental_collection_failed(), "Should be clear");
   } else {
     assert(_promo_failure_scan_stack.is_empty(), "post condition");
@@ -695,6 +692,9 @@
     // Reset the PromotionFailureALot counters.
     NOT_PRODUCT(Universe::heap()->reset_promotion_should_fail();)
   }
+  if (PrintGC && !PrintGCDetails) {
+    gch->print_heap_change(gch_prev_used);
+  }
   // set new iteration safe limit for the survivor spaces
   from()->set_concurrent_iteration_safe_limit(from()->top());
   to()->set_concurrent_iteration_safe_limit(to()->top());
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/gc/defnew/HeapChangeLogging.java	Mon Dec 16 13:43:06 2013 +0100
@@ -0,0 +1,81 @@
+/*
+ * 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 HeapChangeLogging.java
+ * @bug 8027440
+ * @library /testlibrary
+ * @build HeapChangeLogging
+ * @summary Allocate to get a promotion failure and verify that that heap change logging is present.
+ * @run main HeapChangeLogging
+ *
+ * Test the output of G1SummarizeRSetStats in conjunction with G1SummarizeRSetStatsPeriod.
+ */
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import com.oracle.java.testlibrary.*;
+
+public class HeapChangeLogging {
+  public static void main(String[] args) throws Exception {
+    ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-Xmx128m", "-Xmn100m", "-XX:+UseSerialGC", "-XX:+PrintGC", "HeapFiller");
+    OutputAnalyzer output = new OutputAnalyzer(pb.start());
+    String stdout = output.getStdout();
+    System.out.println(stdout);
+    Matcher stdoutMatcher = Pattern.compile("\\[GC .Allocation Failure.*K->.*K\\(.*K\\), .* secs\\]", Pattern.MULTILINE).matcher(stdout);
+    if (!stdoutMatcher.find()) {
+      throw new RuntimeException("No proper GC log line found");
+    }
+    output.shouldHaveExitValue(0);
+  }
+}
+
+class HeapFiller {
+  public static Entry root;
+  private static final int PAYLOAD_SIZE = 1000;
+
+  public static void main(String[] args) {
+    root = new Entry(PAYLOAD_SIZE, null);
+    Entry current = root;
+    try {
+      while (true) {
+        Entry newEntry = new Entry(PAYLOAD_SIZE, current);
+        current = newEntry;
+      }
+    } catch (OutOfMemoryError e) {
+      root = null;
+    }
+
+  }
+}
+
+class Entry {
+  public Entry previous;
+  public byte[] payload;
+
+  Entry(int payloadSize, Entry previous) {
+    payload = new byte[payloadSize];
+    this.previous = previous;
+  }
+}
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