--- a/hotspot/src/share/vm/gc_implementation/shared/parGCAllocBuffer.cpp	Thu Apr 16 15:31:20 2015 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,134 +0,0 @@
-/*
- * Copyright (c) 2001, 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_implementation/shared/parGCAllocBuffer.hpp"
-#include "memory/threadLocalAllocBuffer.hpp"
-#include "oops/arrayOop.hpp"
-#include "oops/oop.inline.hpp"
-
-size_t ParGCAllocBuffer::min_size() {
-  // Make sure that we return something that is larger than AlignmentReserve
-  return align_object_size(MAX2(MinTLABSize / HeapWordSize, (uintx)oopDesc::header_size())) + AlignmentReserve;
-}
-
-size_t ParGCAllocBuffer::max_size() {
-  return ThreadLocalAllocBuffer::max_size();
-}
-
-ParGCAllocBuffer::ParGCAllocBuffer(size_t desired_plab_sz_) :
-  _word_sz(desired_plab_sz_), _bottom(NULL), _top(NULL),
-  _end(NULL), _hard_end(NULL), _allocated(0), _wasted(0)
-{
-  // ArrayOopDesc::header_size depends on command line initialization.
-  AlignmentReserve = oopDesc::header_size() > MinObjAlignment ? align_object_size(arrayOopDesc::header_size(T_INT)) : 0;
-  assert(min_size() > AlignmentReserve,
-         err_msg("Minimum PLAB size " SIZE_FORMAT" must be larger than alignment reserve " SIZE_FORMAT" "
-                 "to be able to contain objects", min_size(), AlignmentReserve));
-}
-
-// If the minimum object size is greater than MinObjAlignment, we can
-// end up with a shard at the end of the buffer that's smaller than
-// the smallest object.  We can't allow that because the buffer must
-// look like it's full of objects when we retire it, so we make
-// sure we have enough space for a filler int array object.
-size_t ParGCAllocBuffer::AlignmentReserve;
-
-void ParGCAllocBuffer::flush_and_retire_stats(PLABStats* stats) {
-  // Retire the last allocation buffer.
-  size_t unused = retire_internal();
-
-  // Now flush the statistics.
-  stats->add_allocated(_allocated);
-  stats->add_wasted(_wasted);
-  stats->add_unused(unused);
-
-  // Since we have flushed the stats we need to clear  the _allocated and _wasted
-  // fields in case somebody retains an instance of this over GCs. Not doing so
-  // will artifically inflate the values in the statistics.
-  _allocated = 0;
-  _wasted = 0;
-}
-
-void ParGCAllocBuffer::retire() {
-  _wasted += retire_internal();
-}
-
-size_t ParGCAllocBuffer::retire_internal() {
-  size_t result = 0;
-  if (_top < _hard_end) {
-    CollectedHeap::fill_with_object(_top, _hard_end);
-    result += invalidate();
-  }
-  return result;
-}
-
-// Compute desired plab size and latch result for later
-// use. This should be called once at the end of parallel
-// scavenge; it clears the sensor accumulators.
-void PLABStats::adjust_desired_plab_sz(uint no_of_gc_workers) {
-  assert(ResizePLAB, "Not set");
-
-  assert(is_object_aligned(max_size()) && min_size() <= max_size(),
-         "PLAB clipping computation may be incorrect");
-
-  if (_allocated == 0) {
-    assert(_unused == 0,
-           err_msg("Inconsistency in PLAB stats: "
-                   "_allocated: "SIZE_FORMAT", "
-                   "_wasted: "SIZE_FORMAT", "
-                   "_unused: "SIZE_FORMAT,
-                   _allocated, _wasted, _unused));
-
-    _allocated = 1;
-  }
-  double wasted_frac    = (double)_unused / (double)_allocated;
-  size_t target_refills = (size_t)((wasted_frac * TargetSurvivorRatio) / TargetPLABWastePct);
-  if (target_refills == 0) {
-    target_refills = 1;
-  }
-  size_t used = _allocated - _wasted - _unused;
-  size_t recent_plab_sz = used / (target_refills * no_of_gc_workers);
-  // Take historical weighted average
-  _filter.sample(recent_plab_sz);
-  // Clip from above and below, and align to object boundary
-  size_t new_plab_sz = MAX2(min_size(), (size_t)_filter.average());
-  new_plab_sz = MIN2(max_size(), new_plab_sz);
-  new_plab_sz = align_object_size(new_plab_sz);
-  // Latch the result
-  if (PrintPLAB) {
-    gclog_or_tty->print(" (plab_sz = " SIZE_FORMAT" desired_plab_sz = " SIZE_FORMAT") ", recent_plab_sz, new_plab_sz);
-  }
-  _desired_plab_sz = new_plab_sz;
-
-  reset();
-}
-
-#ifndef PRODUCT
-void ParGCAllocBuffer::print() {
-  gclog_or_tty->print_cr("parGCAllocBuffer: _bottom: " PTR_FORMAT "  _top: " PTR_FORMAT
-    "  _end: " PTR_FORMAT "  _hard_end: " PTR_FORMAT ")",
-    p2i(_bottom), p2i(_top), p2i(_end), p2i(_hard_end));
-}
-#endif // !PRODUCT