jdk8-mips64-public/hotspot: src/share/vm/gc_implementation/g1/heapRegionSet.inline.hpp@7383557659bd (annotated)

src/share/vm/gc_implementation/g1/heapRegionSet.inline.hpp@7383557659bd (annotated)

src/share/vm/gc_implementation/g1/heapRegionSet.inline.hpp

Tue, 21 Aug 2012 14:10:39 -0700

author: johnc
date: Tue, 21 Aug 2012 14:10:39 -0700
changeset 3998: 7383557659bd
parent 3957: a2f7274eb6ef
child 6385: 58fc1b1523dc
permissions: -rw-r--r--

7185699: G1: Prediction model discrepancies
Summary: Correct the result value of G1CollectedHeap::pending_card_num(). Change the code that calculates the GC efficiency of a non-young heap region to use historical data from mixed GCs and the actual number of live bytes when predicting how long it would take to collect the region. Changes were also reviewed by Thomas Schatzl.
Reviewed-by: azeemj, brutisso

 /*
  * Copyright (c) 2011, 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.
  *
  */
 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSET_INLINE_HPP
 #define SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSET_INLINE_HPP
 #include "gc_implementation/g1/heapRegionSet.hpp"
 //////////////////// HeapRegionSetBase ////////////////////
 inline void HeapRegionSetBase::update_for_addition(HeapRegion* hr) {
   // Assumes the caller has already verified the region.
   _length           += 1;
   _region_num       += hr->region_num();
   _total_used_bytes += hr->used();
 }
 inline void HeapRegionSetBase::add_internal(HeapRegion* hr) {
   hrs_assert_region_ok(this, hr, NULL);
   assert(hr->next() == NULL, hrs_ext_msg(this, "should not already be linked"));
   update_for_addition(hr);
   hr->set_containing_set(this);
 }
 inline void HeapRegionSetBase::update_for_removal(HeapRegion* hr) {
   // Assumes the caller has already verified the region.
   assert(_length > 0, hrs_ext_msg(this, "pre-condition"));
   _length -= 1;
   uint region_num_diff = hr->region_num();
   assert(region_num_diff <= _region_num,
          hrs_err_msg("[%s] region's region num: %u "
                      "should be <= region num: %u",
                      name(), region_num_diff, _region_num));
   _region_num -= region_num_diff;
   size_t used_bytes = hr->used();
   assert(used_bytes <= _total_used_bytes,
          hrs_err_msg("[%s] region's used bytes: "SIZE_FORMAT" "
                      "should be <= used bytes: "SIZE_FORMAT,
                      name(), used_bytes, _total_used_bytes));
   _total_used_bytes -= used_bytes;
 }
 inline void HeapRegionSetBase::remove_internal(HeapRegion* hr) {
   hrs_assert_region_ok(this, hr, this);
   assert(hr->next() == NULL, hrs_ext_msg(this, "should already be unlinked"));
   hr->set_containing_set(NULL);
   update_for_removal(hr);
 }
 //////////////////// HeapRegionSet ////////////////////
 inline void HeapRegionSet::add(HeapRegion* hr) {
   hrs_assert_mt_safety_ok(this);
   // add_internal() will verify the region.
   add_internal(hr);
 }
 inline void HeapRegionSet::remove(HeapRegion* hr) {
   hrs_assert_mt_safety_ok(this);
   // remove_internal() will verify the region.
   remove_internal(hr);
 }
 inline void HeapRegionSet::remove_with_proxy(HeapRegion* hr,
                                              HeapRegionSet* proxy_set) {
   // No need to fo the MT safety check here given that this method
   // does not update the contents of the set but instead accumulates
   // the changes in proxy_set which is assumed to be thread-local.
   hrs_assert_sets_match(this, proxy_set);
   hrs_assert_region_ok(this, hr, this);
   hr->set_containing_set(NULL);
   proxy_set->update_for_addition(hr);
 }
 //////////////////// HeapRegionLinkedList ////////////////////
 inline void HeapRegionLinkedList::add_as_head(HeapRegion* hr) {
   hrs_assert_mt_safety_ok(this);
   assert((length() == 0 && _head == NULL && _tail == NULL) ||
          (length() >  0 && _head != NULL && _tail != NULL),
          hrs_ext_msg(this, "invariant"));
   // add_internal() will verify the region.
   add_internal(hr);
   // Now link the region.
   if (_head != NULL) {
     hr->set_next(_head);
   } else {
     _tail = hr;
   }
   _head = hr;
 }
 inline void HeapRegionLinkedList::add_as_tail(HeapRegion* hr) {
   hrs_assert_mt_safety_ok(this);
   assert((length() == 0 && _head == NULL && _tail == NULL) ||
          (length() >  0 && _head != NULL && _tail != NULL),
          hrs_ext_msg(this, "invariant"));
   // add_internal() will verify the region.
   add_internal(hr);
   // Now link the region.
   if (_tail != NULL) {
     _tail->set_next(hr);
   } else {
     _head = hr;
   }
   _tail = hr;
 }
 inline HeapRegion* HeapRegionLinkedList::remove_head() {
   hrs_assert_mt_safety_ok(this);
   assert(!is_empty(), hrs_ext_msg(this, "the list should not be empty"));
   assert(length() > 0 && _head != NULL && _tail != NULL,
          hrs_ext_msg(this, "invariant"));
   // We need to unlink it first.
   HeapRegion* hr = _head;
   _head = hr->next();
   if (_head == NULL) {
     _tail = NULL;
   }
   hr->set_next(NULL);
   // remove_internal() will verify the region.
   remove_internal(hr);
   return hr;
 }
 inline HeapRegion* HeapRegionLinkedList::remove_head_or_null() {
   hrs_assert_mt_safety_ok(this);
   if (!is_empty()) {
     return remove_head();
   } else {
     return NULL;
   }
 }
 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSET_INLINE_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/gc_implementation/g1/heapRegionSet.inline.hpp@7383557659bd (annotated)

src/share/vm/gc_implementation/g1/heapRegionSet.inline.hpp