1 /*
   2  * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "gc/serial/defNewGeneration.hpp"
  26 #include "gc/serial/serialGCServicabilitySupport.hpp"
  27 #include "gc/shared/genCollectedHeap.hpp"
  28 #include "services/memoryManager.hpp"
  29 #include "services/memoryPool.hpp"
  30 
  31 class CopyMemoryManager : public GCMemoryManager {
  32 private:
  33 public:
  34   CopyMemoryManager() : GCMemoryManager() {}
  35 
  36   const char* name() { return "Copy"; }
  37 };
  38 
  39 class MSCMemoryManager : public GCMemoryManager {
  40 private:
  41 public:
  42   MSCMemoryManager() : GCMemoryManager() {}
  43 
  44   const char* name() { return "MarkSweepCompact"; }
  45 };
  46 
  47 GCMemoryManager* SerialGCServicabilitySupport::create_minor_gc_manager() {
  48   return new CopyMemoryManager();
  49 }
  50 
  51 GCMemoryManager* SerialGCServicabilitySupport::create_major_gc_manager() {
  52   return new MSCMemoryManager();
  53 }
  54 
  55 void SerialGCServicabilitySupport::add_memory_pools(GrowableArray<MemoryPool*>* pools_list,
  56                                                     GCMemoryManager* minor_mgr,
  57                                                     GCMemoryManager* major_mgr) {
  58   GenCollectedHeap* heap = GenCollectedHeap::heap();
  59   DefNewGeneration* young_gen = (DefNewGeneration*) heap->young_gen();
  60 
  61   // Add a memory pool for each space and young gen doesn't
  62   // support low memory detection as it is expected to get filled up.
  63   MemoryPool* eden = new ContiguousSpacePool(young_gen->eden(),
  64                                              "Eden Space",
  65                                              MemoryPool::Heap,
  66                                              young_gen->max_eden_size(),
  67                                              false /* support_usage_threshold */);
  68   MemoryPool* survivor = new SurvivorContiguousSpacePool(young_gen,
  69                                                          "Survivor Space",
  70                                                          MemoryPool::Heap,
  71                                                          young_gen->max_survivor_size(),
  72                                                          false /* support_usage_threshold */);
  73   GenerationPool* old = new GenerationPool(heap->old_gen(), "Tenured Gen", MemoryPool::Heap, true);
  74 
  75   pools_list->append(eden);
  76   pools_list->append(survivor);
  77   pools_list->append(old);
  78 
  79   minor_mgr->add_pool(eden);
  80   minor_mgr->add_pool(survivor);
  81 
  82   major_mgr->add_pool(eden);
  83   major_mgr->add_pool(survivor);
  84   major_mgr->add_pool(old);
  85 }