1 /*
   2  * Copyright (c) 2007, 2017, 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 "precompiled.hpp"
  26 #include "gc/g1/g1CollectedHeap.hpp"
  27 #include "gc/g1/g1MemoryPool.hpp"
  28 #include "gc/g1/heapRegion.hpp"
  29 
  30 G1MemoryPoolSuper::G1MemoryPoolSuper(G1CollectedHeap* g1h,
  31                                      const char* name,
  32                                      size_t init_size,
  33                                      size_t max_size,
  34                                      bool support_usage_threshold) :
  35   CollectedMemoryPool(name,
  36                       init_size,
  37                       max_size,
  38                       support_usage_threshold),
  39   _g1mm(g1h->g1mm()) {
  40   assert(UseG1GC, "sanity");
  41 }
  42 
  43 G1EdenPool::G1EdenPool(G1CollectedHeap* g1h, size_t initial_size) :
  44   G1MemoryPoolSuper(g1h,
  45                     "G1 Eden Space",
  46                     initial_size,
  47                     MemoryUsage::undefined_size(),
  48                     false /* support_usage_threshold */) { }
  49 
  50 MemoryUsage G1EdenPool::get_memory_usage() {
  51   return _g1mm->eden_space_memory_usage(initial_size(), max_size());
  52 }
  53 
  54 G1SurvivorPool::G1SurvivorPool(G1CollectedHeap* g1h, size_t initial_size) :
  55   G1MemoryPoolSuper(g1h,
  56                     "G1 Survivor Space",
  57                     initial_size,
  58                     MemoryUsage::undefined_size(),
  59                     false /* support_usage_threshold */) { }
  60 
  61 MemoryUsage G1SurvivorPool::get_memory_usage() {
  62   return _g1mm->survivor_space_memory_usage(initial_size(), max_size());
  63 }
  64 
  65 G1OldGenPool::G1OldGenPool(G1CollectedHeap* g1h, size_t initial_size, size_t max_size) :
  66   G1MemoryPoolSuper(g1h,
  67                     "G1 Old Gen",
  68                     initial_size,
  69                     max_size,
  70                     true /* support_usage_threshold */) { }
  71 
  72 MemoryUsage G1OldGenPool::get_memory_usage() {
  73   return _g1mm->old_gen_memory_usage(initial_size(), max_size());
  74 }