--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/vm/services/memRecorder.cpp	Thu Jun 28 17:03:16 2012 -0400
@@ -0,0 +1,162 @@
+/*
+ * Copyright (c) 2012, 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.
+ *
+ */
+
+#include "precompiled.hpp"
+
+#include "runtime/atomic.hpp"
+#include "services/memBaseline.hpp"
+#include "services/memRecorder.hpp"
+#include "services/memPtr.hpp"
+#include "services/memTracker.hpp"
+
+MemPointer* SequencedRecordIterator::next_record() {
+  MemPointer* itr_cur = _itr.current();
+  if (itr_cur == NULL) return NULL;
+  MemPointer* itr_next = _itr.next();
+
+  while (itr_next != NULL &&
+    same_kind((MemPointerRecord*)itr_cur, (MemPointerRecord*)itr_next)) {
+    itr_cur = itr_next;
+    itr_next = _itr.next();
+  }
+
+  return itr_cur;
+}
+
+
+debug_only(volatile jint MemRecorder::_instance_count = 0;)
+
+MemRecorder::MemRecorder() {
+  assert(MemTracker::is_on(), "Native memory tracking is off");
+  debug_only(Atomic::inc(&_instance_count);)
+  debug_only(set_generation();)
+
+  if (MemTracker::track_callsite()) {
+    _pointer_records = new (std::nothrow)FixedSizeMemPointerArray<SeqMemPointerRecordEx,
+        DEFAULT_RECORDER_PTR_ARRAY_SIZE>();
+  } else {
+    _pointer_records = new (std::nothrow)FixedSizeMemPointerArray<SeqMemPointerRecord,
+        DEFAULT_RECORDER_PTR_ARRAY_SIZE>();
+  }
+  _next = NULL;
+
+
+  if (_pointer_records != NULL) {
+    // recode itself
+    record((address)this, (MemPointerRecord::malloc_tag()|mtNMT|otNMTRecorder),
+        sizeof(MemRecorder), CALLER_PC);
+    record((address)_pointer_records, (MemPointerRecord::malloc_tag()|mtNMT|otNMTRecorder),
+        _pointer_records->instance_size(),CURRENT_PC);
+  }
+}
+
+MemRecorder::~MemRecorder() {
+  if (_pointer_records != NULL) {
+    if (MemTracker::is_on()) {
+      MemTracker::record_free((address)_pointer_records, mtNMT);
+      MemTracker::record_free((address)this, mtNMT);
+    }
+    delete _pointer_records;
+  }
+  if (_next != NULL) {
+    delete _next;
+  }
+
+#ifdef ASSERT
+  Atomic::dec(&_instance_count);
+#endif
+}
+
+// Sorting order:
+//   1. memory block address
+//   2. mem pointer record tags
+//   3. sequence number
+int MemRecorder::sort_record_fn(const void* e1, const void* e2) {
+  const MemPointerRecord* p1 = (const MemPointerRecord*)e1;
+  const MemPointerRecord* p2 = (const MemPointerRecord*)e2;
+  int delta = UNSIGNED_COMPARE(p1->addr(), p2->addr());
+  if (delta == 0) {
+    int df = UNSIGNED_COMPARE((p1->flags() & MemPointerRecord::tag_masks),
+                              (p2->flags() & MemPointerRecord::tag_masks));
+    if (df == 0) {
+      assert(p1->seq() != p2->seq(), "dup seq");
+      return p1->seq() - p2->seq();
+    } else {
+      return df;
+    }
+  } else {
+    return delta;
+  }
+}
+
+bool MemRecorder::record(address p, MEMFLAGS flags, size_t size, address pc) {
+#ifdef ASSERT
+  if (MemPointerRecord::is_virtual_memory_record(flags)) {
+    assert((flags & MemPointerRecord::tag_masks) != 0, "bad virtual memory record");
+  } else {
+    assert((flags & MemPointerRecord::tag_masks) == MemPointerRecord::malloc_tag() ||
+           (flags & MemPointerRecord::tag_masks) == MemPointerRecord::free_tag() ||
+           IS_ARENA_OBJ(flags),
+           "bad malloc record");
+  }
+  // a recorder should only hold records within the same generation
+  unsigned long cur_generation = SequenceGenerator::current_generation();
+  assert(cur_generation == _generation,
+         "this thread did not enter sync point");
+#endif
+
+  if (MemTracker::track_callsite()) {
+    SeqMemPointerRecordEx ap(p, flags, size, pc);
+    debug_only(check_dup_seq(ap.seq());)
+    return _pointer_records->append(&ap);
+  } else {
+    SeqMemPointerRecord ap(p, flags, size);
+    debug_only(check_dup_seq(ap.seq());)
+    return _pointer_records->append(&ap);
+  }
+}
+
+  // iterator for alloc pointers
+SequencedRecordIterator MemRecorder::pointer_itr() {
+  assert(_pointer_records != NULL, "just check");
+  _pointer_records->sort((FN_SORT)sort_record_fn);
+  return SequencedRecordIterator(_pointer_records);
+}
+
+
+#ifdef ASSERT
+void MemRecorder::set_generation() {
+  _generation = SequenceGenerator::current_generation();
+}
+
+void MemRecorder::check_dup_seq(jint seq) const {
+  MemPointerArrayIteratorImpl itr(_pointer_records);
+  MemPointerRecord* rc = (MemPointerRecord*)itr.current();
+  while (rc != NULL) {
+    assert(rc->seq() != seq, "dup seq");
+    rc = (MemPointerRecord*)itr.next();
+  }
+}
+
+#endif