Mercurial > jdk8-mips64-public > hotspot / file revision

 /*

  * Copyright (c) 2007, 2010, 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/g1/g1CollectedHeap.hpp"

 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"

 #include "gc_implementation/g1/g1CollectorPolicy.hpp"

 #include "gc_implementation/g1/heapRegion.hpp"

 #include "services/g1MemoryPool.hpp"

 G1MemoryPoolSuper::G1MemoryPoolSuper(G1CollectedHeap* g1h,

                                      const char* name,

                                      size_t init_size,

                                      bool support_usage_threshold) :

   _g1h(g1h), CollectedMemoryPool(name,

                                  MemoryPool::Heap,

                                  init_size,

                                  undefined_max(),

                                  support_usage_threshold) {

   assert(UseG1GC, "sanity");

 }

 // See the comment at the top of g1MemoryPool.hpp

 size_t G1MemoryPoolSuper::eden_space_committed(G1CollectedHeap* g1h) {

   return MAX2(eden_space_used(g1h), (size_t) HeapRegion::GrainBytes);

 }

 // See the comment at the top of g1MemoryPool.hpp

 size_t G1MemoryPoolSuper::eden_space_used(G1CollectedHeap* g1h) {

   size_t young_list_length = g1h->young_list()->length();

   size_t eden_used = young_list_length * HeapRegion::GrainBytes;

   size_t survivor_used = survivor_space_used(g1h);

   eden_used = subtract_up_to_zero(eden_used, survivor_used);

   return eden_used;

 }

 // See the comment at the top of g1MemoryPool.hpp

 size_t G1MemoryPoolSuper::survivor_space_committed(G1CollectedHeap* g1h) {

   return MAX2(survivor_space_used(g1h), (size_t) HeapRegion::GrainBytes);

 }

 // See the comment at the top of g1MemoryPool.hpp

 size_t G1MemoryPoolSuper::survivor_space_used(G1CollectedHeap* g1h) {

   size_t survivor_num = g1h->g1_policy()->recorded_survivor_regions();

   size_t survivor_used = survivor_num * HeapRegion::GrainBytes;

   return survivor_used;

 }

 // See the comment at the top of g1MemoryPool.hpp

 size_t G1MemoryPoolSuper::old_space_committed(G1CollectedHeap* g1h) {

   size_t committed = overall_committed(g1h);

   size_t eden_committed = eden_space_committed(g1h);

   size_t survivor_committed = survivor_space_committed(g1h);

   committed = subtract_up_to_zero(committed, eden_committed);

   committed = subtract_up_to_zero(committed, survivor_committed);

   committed = MAX2(committed, (size_t) HeapRegion::GrainBytes);

   return committed;

 }

 // See the comment at the top of g1MemoryPool.hpp

 size_t G1MemoryPoolSuper::old_space_used(G1CollectedHeap* g1h) {

   size_t used = overall_used(g1h);

   size_t eden_used = eden_space_used(g1h);

   size_t survivor_used = survivor_space_used(g1h);

   used = subtract_up_to_zero(used, eden_used);

   used = subtract_up_to_zero(used, survivor_used);

   return used;

 }

 G1EdenPool::G1EdenPool(G1CollectedHeap* g1h) :

   G1MemoryPoolSuper(g1h,

                     "G1 Eden",

                     eden_space_committed(g1h), /* init_size */

                     false /* support_usage_threshold */) { }

 MemoryUsage G1EdenPool::get_memory_usage() {

   size_t initial_sz = initial_size();

   size_t max_sz     = max_size();

   size_t used       = used_in_bytes();

   size_t committed  = eden_space_committed(_g1h);

   return MemoryUsage(initial_sz, used, committed, max_sz);

 }

 G1SurvivorPool::G1SurvivorPool(G1CollectedHeap* g1h) :

   G1MemoryPoolSuper(g1h,

                     "G1 Survivor",

                     survivor_space_committed(g1h), /* init_size */

                     false /* support_usage_threshold */) { }

 MemoryUsage G1SurvivorPool::get_memory_usage() {

   size_t initial_sz = initial_size();

   size_t max_sz     = max_size();

   size_t used       = used_in_bytes();

   size_t committed  = survivor_space_committed(_g1h);

   return MemoryUsage(initial_sz, used, committed, max_sz);

 }

 G1OldGenPool::G1OldGenPool(G1CollectedHeap* g1h) :

   G1MemoryPoolSuper(g1h,

                     "G1 Old Gen",

                     old_space_committed(g1h), /* init_size */

                     true /* support_usage_threshold */) { }

 MemoryUsage G1OldGenPool::get_memory_usage() {

   size_t initial_sz = initial_size();

   size_t max_sz     = max_size();

   size_t used       = used_in_bytes();

   size_t committed  = old_space_committed(_g1h);

   return MemoryUsage(initial_sz, used, committed, max_sz);

 }