src/share/vm/gc_implementation/parallelScavenge/parallelScavengeHeap.cpp

rev 4773 : 8005849: JEP 167: Event-Based JVM Tracing
Reviewed-by: acorn, coleenp, sla
Contributed-by: Karen Kinnear <karen.kinnear@oracle.com>, Bengt Rutisson <bengt.rutisson@oracle.com>, Calvin Cheung <calvin.cheung@oracle.com>, Erik Gahlin <erik.gahlin@oracle.com>, Erik Helin <erik.helin@oracle.com>, Jesper Wilhelmsson <jesper.wilhelmsson@oracle.com>, Keith McGuigan <keith.mcguigan@oracle.com>, Mattias Tobiasson <mattias.tobiasson@oracle.com>, Markus Gronlund <markus.gronlund@oracle.com>, Mikael Auno <mikael.auno@oracle.com>, Nils Eliasson <nils.eliasson@oracle.com>, Nils Loodin <nils.loodin@oracle.com>, Rickard Backman <rickard.backman@oracle.com>, Staffan Larsen <staffan.larsen@oracle.com>, Stefan Karlsson <stefan.karlsson@oracle.com>, Yekaterina Kantserova <yekaterina.kantserova@oracle.com>

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 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.

@@ -33,10 +33,12 @@
 #include "gc_implementation/parallelScavenge/psMarkSweep.hpp"
 #include "gc_implementation/parallelScavenge/psParallelCompact.hpp"
 #include "gc_implementation/parallelScavenge/psPromotionManager.hpp"
 #include "gc_implementation/parallelScavenge/psScavenge.hpp"
 #include "gc_implementation/parallelScavenge/vmPSOperations.hpp"
+#include "gc_implementation/shared/gcHeapSummary.hpp"
+#include "gc_implementation/shared/gcWhen.hpp"
 #include "memory/gcLocker.inline.hpp"
 #include "oops/oop.inline.hpp"
 #include "runtime/handles.inline.hpp"
 #include "runtime/java.hpp"
 #include "runtime/vmThread.hpp"

@@ -640,10 +642,33 @@
 
 void ParallelScavengeHeap::prepare_for_verify() {
   ensure_parsability(false);  // no need to retire TLABs for verification
 }
 
+PSHeapSummary ParallelScavengeHeap::create_ps_heap_summary() {
+  PSOldGen* old = old_gen();
+  HeapWord* old_committed_end = (HeapWord*)old->virtual_space()->committed_high_addr();
+  VirtualSpaceSummary old_summary(old->reserved().start(), old_committed_end, old->reserved().end());
+  SpaceSummary old_space(old->reserved().start(), old_committed_end, old->used_in_bytes());
+
+  PSYoungGen* young = young_gen();
+  VirtualSpaceSummary young_summary(young->reserved().start(),
+    (HeapWord*)young->virtual_space()->committed_high_addr(), young->reserved().end());
+
+  MutableSpace* eden = young_gen()->eden_space();
+  SpaceSummary eden_space(eden->bottom(), eden->end(), eden->used_in_bytes());
+
+  MutableSpace* from = young_gen()->from_space();
+  SpaceSummary from_space(from->bottom(), from->end(), from->used_in_bytes());
+
+  MutableSpace* to = young_gen()->to_space();
+  SpaceSummary to_space(to->bottom(), to->end(), to->used_in_bytes());
+
+  VirtualSpaceSummary heap_summary = create_heap_space_summary();
+  return PSHeapSummary(heap_summary, used(), old_summary, old_space, young_summary, eden_space, from_space, to_space);
+}
+
 void ParallelScavengeHeap::print_on(outputStream* st) const {
   young_gen()->print_on(st);
   old_gen()->print_on(st);
   MetaspaceAux::print_on(st);
 }

@@ -704,10 +729,16 @@
                         "("  SIZE_FORMAT "K)",
                         prev_used / K, used() / K, capacity() / K);
   }
 }
 
+void ParallelScavengeHeap::trace_heap(GCWhen::Type when, GCTracer* gc_tracer) {
+  const PSHeapSummary& heap_summary = create_ps_heap_summary();
+  const MetaspaceSummary& metaspace_summary = create_metaspace_summary();
+  gc_tracer->report_gc_heap_summary(when, heap_summary, metaspace_summary);
+}
+
 ParallelScavengeHeap* ParallelScavengeHeap::heap() {
   assert(_psh != NULL, "Uninitialized access to ParallelScavengeHeap::heap()");
   assert(_psh->kind() == CollectedHeap::ParallelScavengeHeap, "not a parallel scavenge heap");
   return _psh;
 }