--- a/hotspot/src/share/vm/gc/g1/g1GCPhaseTimes.cpp	Thu Oct 29 11:33:43 2015 +0100
+++ b/hotspot/src/share/vm/gc/g1/g1GCPhaseTimes.cpp	Thu Oct 29 14:58:44 2015 +0100
@@ -28,6 +28,7 @@
 #include "gc/g1/g1GCPhaseTimes.hpp"
 #include "gc/g1/g1Log.hpp"
 #include "gc/g1/g1StringDedup.hpp"
+#include "gc/g1/workerDataArray.inline.hpp"
 #include "memory/allocation.hpp"
 #include "runtime/os.hpp"
 
@@ -86,168 +87,6 @@
   }
 };
 
-template <class T>
-class WorkerDataArray  : public CHeapObj<mtGC> {
-  friend class G1GCParPhasePrinter;
-  T*          _data;
-  uint        _length;
-  const char* _title;
-  bool        _print_sum;
-  int         _log_level;
-  uint        _indent_level;
-  bool        _enabled;
-
-  WorkerDataArray<size_t>* _thread_work_items;
-
-  NOT_PRODUCT(inline T uninitialized() const;)
-
-  void set_all(T value) {
-    for (uint i = 0; i < _length; i++) {
-      _data[i] = value;
-    }
-  }
-
- public:
-  WorkerDataArray(uint length,
-                  const char* title,
-                  bool print_sum,
-                  int log_level,
-                  uint indent_level) :
-   _title(title),
-   _length(0),
-   _print_sum(print_sum),
-   _log_level(log_level),
-   _indent_level(indent_level),
-   _thread_work_items(NULL),
-   _enabled(true) {
-    assert(length > 0, "Must have some workers to store data for");
-    _length = length;
-    _data = NEW_C_HEAP_ARRAY(T, _length, mtGC);
-    reset();
-  }
-
-  ~WorkerDataArray() {
-    FREE_C_HEAP_ARRAY(T, _data);
-  }
-
-  void link_thread_work_items(WorkerDataArray<size_t>* thread_work_items) {
-    _thread_work_items = thread_work_items;
-  }
-
-  WorkerDataArray<size_t>* thread_work_items() const {
-    return _thread_work_items;
-  }
-
-  void set(uint worker_i, T value) {
-    assert(worker_i < _length, "Worker %d is greater than max: %d", worker_i, _length);
-    assert(_data[worker_i] == uninitialized(), "Overwriting data for worker %d in %s", worker_i, _title);
-    _data[worker_i] = value;
-  }
-
-  void set_thread_work_item(uint worker_i, size_t value) {
-    assert(_thread_work_items != NULL, "No sub count");
-    _thread_work_items->set(worker_i, value);
-  }
-
-  T get(uint worker_i) const {
-    assert(worker_i < _length, "Worker %d is greater than max: %d", worker_i, _length);
-    assert(_data[worker_i] != uninitialized(), "No data added for worker %d", worker_i);
-    return _data[worker_i];
-  }
-
-  void add(uint worker_i, T value) {
-    assert(worker_i < _length, "Worker %d is greater than max: %d", worker_i, _length);
-    assert(_data[worker_i] != uninitialized(), "No data to add to for worker %d", worker_i);
-    _data[worker_i] += value;
-  }
-
-  double average(uint active_threads) const {
-    return sum(active_threads) / (double) active_threads;
-  }
-
-  T sum(uint active_threads) const {
-    T s = get(0);
-    for (uint i = 1; i < active_threads; ++i) {
-      s += get(i);
-    }
-    return s;
-  }
-
-  T minimum(uint active_threads) const {
-    T min = get(0);
-    for (uint i = 1; i < active_threads; ++i) {
-      min = MIN2(min, get(i));
-    }
-    return min;
-  }
-
-  T maximum(uint active_threads) const {
-    T max = get(0);
-    for (uint i = 1; i < active_threads; ++i) {
-      max = MAX2(max, get(i));
-    }
-    return max;
-  }
-
-  T diff(uint active_threads) const {
-    return maximum(active_threads) - minimum(active_threads);
-  }
-
-  void reset() PRODUCT_RETURN;
-  void verify(uint active_threads) PRODUCT_RETURN;
-
-  void set_enabled(bool enabled) {
-    _enabled = enabled;
-  }
-
-  int log_level() const {
-    return _log_level;
-  }
-
-  void clear() {
-    set_all(0);
-  }
-};
-
-
-#ifndef PRODUCT
-
-template <>
-inline size_t WorkerDataArray<size_t>::uninitialized() const {
-  return (size_t)-1;
-}
-
-template <>
-inline double WorkerDataArray<double>::uninitialized() const {
-  return -1.0;
-}
-
-template <class T>
-void WorkerDataArray<T>::reset() {
-  set_all(uninitialized());
-  if (_thread_work_items != NULL) {
-    _thread_work_items->reset();
-  }
-}
-
-template <class T>
-void WorkerDataArray<T>::verify(uint active_threads) {
-  if (!_enabled) {
-    return;
-  }
-
-  assert(active_threads <= _length, "Wrong number of active threads");
-  for (uint i = 0; i < active_threads; i++) {
-    assert(_data[i] != uninitialized(),
-           "Invalid data for worker %u in '%s'", i, _title);
-  }
-  if (_thread_work_items != NULL) {
-    _thread_work_items->verify(active_threads);
-  }
-}
-
-#endif
-
 G1GCPhaseTimes::G1GCPhaseTimes(uint max_gc_threads) :
   _max_gc_threads(max_gc_threads)
 {

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/gc/g1/workerDataArray.cpp	Thu Oct 29 14:58:44 2015 +0100
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2015, 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 "gc/g1/workerDataArray.inline.hpp"
+
+#ifndef PRODUCT
+void WorkerDataArray_test() {
+  const uint length = 3;
+  const char* title = "Test array";
+  const bool print_sum = false;
+  const int log_level = 3;
+  const uint indent_level = 2;
+
+  WorkerDataArray<size_t> array(length, title, print_sum, log_level, indent_level);
+  assert(strncmp(array.title(), title, strlen(title)) == 0 , "Expected titles to match");
+  assert(array.should_print_sum() == print_sum, "Expected should_print_sum to match print_sum");
+  assert(array.log_level() == log_level, "Expected log levels to match");
+  assert(array.indentation() == indent_level, "Expected indentation to match");
+
+  const size_t expected[length] = {5, 3, 7};
+  for (uint i = 0; i < length; i++) {
+    array.set(i, expected[i]);
+  }
+  for (uint i = 0; i < length; i++) {
+    assert(array.get(i) == expected[i], "Expected elements to match");
+  }
+
+  assert(array.sum(length) == (5 + 3 + 7), "Expected sums to match");
+  assert(array.minimum(length) == 3, "Expected mininum to match");
+  assert(array.maximum(length) == 7, "Expected maximum to match");
+  assert(array.diff(length) == (7 - 3), "Expected diffs to match");
+  assert(array.average(length) == 5, "Expected averages to match");
+
+  for (uint i = 0; i < length; i++) {
+    array.add(i, 1);
+  }
+  for (uint i = 0; i < length; i++) {
+    assert(array.get(i) == expected[i] + 1, "Expected add to increment values");
+  }
+}
+#endif

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/gc/g1/workerDataArray.hpp	Thu Oct 29 14:58:44 2015 +0100
@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2015, 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 "memory/allocation.hpp"
+#include "utilities/debug.hpp"
+
+template <class T>
+class WorkerDataArray  : public CHeapObj<mtGC> {
+  friend class G1GCParPhasePrinter;
+  T*          _data;
+  uint        _length;
+  const char* _title;
+  bool        _print_sum;
+  int         _log_level;
+  uint        _indent_level;
+  bool        _enabled;
+
+  WorkerDataArray<size_t>* _thread_work_items;
+
+  NOT_PRODUCT(inline T uninitialized() const;)
+
+  void set_all(T value);
+
+ public:
+  WorkerDataArray(uint length,
+                  const char* title,
+                  bool print_sum,
+                  int log_level,
+                  uint indent_level);
+
+  ~WorkerDataArray();
+
+  void link_thread_work_items(WorkerDataArray<size_t>* thread_work_items);
+  void set_thread_work_item(uint worker_i, size_t value);
+  WorkerDataArray<size_t>* thread_work_items() const {
+    return _thread_work_items;
+  }
+
+  void set(uint worker_i, T value);
+  T get(uint worker_i) const;
+
+  void add(uint worker_i, T value);
+
+  double average(uint active_threads) const;
+  T sum(uint active_threads) const;
+  T minimum(uint active_threads) const;
+  T maximum(uint active_threads) const;
+  T diff(uint active_threads) const;
+
+  uint indentation() const {
+    return _indent_level;
+  }
+
+  const char* title() const {
+    return _title;
+  }
+
+  bool should_print_sum() const {
+    return _print_sum;
+  }
+
+  int log_level() const {
+    return _log_level;
+  }
+
+  void clear();
+  void set_enabled(bool enabled) {
+    _enabled = enabled;
+  }
+
+  void reset() PRODUCT_RETURN;
+  void verify(uint active_threads) const PRODUCT_RETURN;
+};

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/gc/g1/workerDataArray.inline.hpp	Thu Oct 29 14:58:44 2015 +0100
@@ -0,0 +1,167 @@
+/*
+ * Copyright (c) 2015, 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 "gc/g1/workerDataArray.hpp"
+#include "memory/allocation.inline.hpp"
+
+template <typename T>
+WorkerDataArray<T>::WorkerDataArray(uint length,
+                                    const char* title,
+                                    bool print_sum,
+                                    int log_level,
+                                    uint indent_level) :
+ _title(title),
+ _length(0),
+ _print_sum(print_sum),
+ _log_level(log_level),
+ _indent_level(indent_level),
+ _thread_work_items(NULL),
+ _enabled(true) {
+  assert(length > 0, "Must have some workers to store data for");
+  _length = length;
+  _data = NEW_C_HEAP_ARRAY(T, _length, mtGC);
+  reset();
+}
+
+template <typename T>
+void WorkerDataArray<T>::set(uint worker_i, T value) {
+  assert(worker_i < _length, "Worker %d is greater than max: %d", worker_i, _length);
+  assert(_data[worker_i] == uninitialized(), "Overwriting data for worker %d in %s", worker_i, _title);
+  _data[worker_i] = value;
+}
+
+template <typename T>
+T WorkerDataArray<T>::get(uint worker_i) const {
+  assert(worker_i < _length, "Worker %d is greater than max: %d", worker_i, _length);
+  assert(_data[worker_i] != uninitialized(), "No data added for worker %d", worker_i);
+  return _data[worker_i];
+}
+
+template <typename T>
+WorkerDataArray<T>::~WorkerDataArray() {
+  FREE_C_HEAP_ARRAY(T, _data);
+}
+
+template <typename T>
+void WorkerDataArray<T>::link_thread_work_items(WorkerDataArray<size_t>* thread_work_items) {
+  _thread_work_items = thread_work_items;
+}
+
+template <typename T>
+void WorkerDataArray<T>::set_thread_work_item(uint worker_i, size_t value) {
+  assert(_thread_work_items != NULL, "No sub count");
+  _thread_work_items->set(worker_i, value);
+}
+
+template <typename T>
+void WorkerDataArray<T>::add(uint worker_i, T value) {
+  assert(worker_i < _length, "Worker %d is greater than max: %d", worker_i, _length);
+  assert(_data[worker_i] != uninitialized(), "No data to add to for worker %d", worker_i);
+  _data[worker_i] += value;
+}
+
+template <typename T>
+double WorkerDataArray<T>::average(uint active_threads) const {
+  return sum(active_threads) / (double) active_threads;
+}
+
+template <typename T>
+T WorkerDataArray<T>::sum(uint active_threads) const {
+  T s = get(0);
+  for (uint i = 1; i < active_threads; ++i) {
+    s += get(i);
+  }
+  return s;
+}
+
+template <typename T>
+T WorkerDataArray<T>::minimum(uint active_threads) const {
+  T min = get(0);
+  for (uint i = 1; i < active_threads; ++i) {
+    min = MIN2(min, get(i));
+  }
+  return min;
+}
+
+template <typename T>
+T WorkerDataArray<T>::maximum(uint active_threads) const {
+  T max = get(0);
+  for (uint i = 1; i < active_threads; ++i) {
+    max = MAX2(max, get(i));
+  }
+  return max;
+}
+
+template <typename T>
+T WorkerDataArray<T>::diff(uint active_threads) const {
+  return maximum(active_threads) - minimum(active_threads);
+}
+
+template <typename T>
+void WorkerDataArray<T>::clear() {
+  set_all(0);
+}
+
+template <typename T>
+void WorkerDataArray<T>::set_all(T value) {
+  for (uint i = 0; i < _length; i++) {
+    _data[i] = value;
+  }
+}
+
+#ifndef PRODUCT
+template <typename T>
+void WorkerDataArray<T>::reset() {
+  set_all(uninitialized());
+  if (_thread_work_items != NULL) {
+    _thread_work_items->reset();
+  }
+}
+
+template <typename T>
+void WorkerDataArray<T>::verify(uint active_threads) const {
+  if (!_enabled) {
+    return;
+  }
+
+  assert(active_threads <= _length, "Wrong number of active threads");
+  for (uint i = 0; i < active_threads; i++) {
+    assert(_data[i] != uninitialized(),
+           "Invalid data for worker %u in '%s'", i, _title);
+  }
+  if (_thread_work_items != NULL) {
+    _thread_work_items->verify(active_threads);
+  }
+}
+
+template <>
+inline size_t WorkerDataArray<size_t>::uninitialized() const {
+  return (size_t)-1;
+}
+
+template <>
+inline double WorkerDataArray<double>::uninitialized() const {
+  return -1.0;
+}
+#endif

--- a/hotspot/src/share/vm/prims/jni.cpp	Thu Oct 29 11:33:43 2015 +0100
+++ b/hotspot/src/share/vm/prims/jni.cpp	Thu Oct 29 14:58:44 2015 +0100
@@ -3876,6 +3876,7 @@
 void FreeRegionList_test();
 void test_memset_with_concurrent_readers();
 void TestPredictions_test();
+void WorkerDataArray_test();
 #endif
 
 void execute_internal_vm_tests() {
@@ -3920,6 +3921,7 @@
     }
     run_unit_test(test_memset_with_concurrent_readers());
     run_unit_test(TestPredictions_test());
+    run_unit_test(WorkerDataArray_test());
 #endif
     tty->print_cr("All internal VM tests passed");
   }