1 /*
   2  * Copyright (c) 2019, 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_implementation/g1/g1HeapRegionTraceType.hpp"
  27 #include "gc_implementation/g1/heapRegionType.hpp"
  28 
  29 bool HeapRegionType::is_valid(Tag tag) {
  30   switch (tag) {
  31     case FreeTag:
  32     case EdenTag:
  33     case SurvTag:
  34     case HumStartsTag:
  35     case HumContTag:
  36     case OldTag:
  37       return true;
  38   }
  39   return false;
  40 }
  41 
  42 const char* HeapRegionType::get_str() const {
  43   hrt_assert_is_valid(_tag);
  44   switch (_tag) {
  45     case FreeTag:      return "FREE";
  46     case EdenTag:      return "EDEN";
  47     case SurvTag:      return "SURV";
  48     case HumStartsTag: return "HUMS";
  49     case HumContTag:   return "HUMC";
  50     case OldTag:       return "OLD";
  51   }
  52   ShouldNotReachHere();
  53   // keep some compilers happy
  54   return NULL;
  55 }
  56 
  57 const char* HeapRegionType::get_short_str() const {
  58   hrt_assert_is_valid(_tag);
  59   switch (_tag) {
  60     case FreeTag:      return "F";
  61     case EdenTag:      return "E";
  62     case SurvTag:      return "S";
  63     case HumStartsTag: return "HS";
  64     case HumContTag:   return "HC";
  65     case OldTag:       return "O";
  66   }
  67   ShouldNotReachHere();
  68   // keep some compilers happy
  69   return NULL;
  70 }
  71 
  72 G1HeapRegionTraceType::Type HeapRegionType::get_trace_type() {
  73   hrt_assert_is_valid(_tag);
  74   switch (_tag) {
  75     case FreeTag:               return G1HeapRegionTraceType::Free;
  76     case EdenTag:               return G1HeapRegionTraceType::Eden;
  77     case SurvTag:               return G1HeapRegionTraceType::Survivor;
  78     case HumStartsTag:          return G1HeapRegionTraceType::StartsHumongous;
  79     case HumContTag:            return G1HeapRegionTraceType::ContinuesHumongous;
  80     case OldTag:                return G1HeapRegionTraceType::Old;
  81     default:
  82       ShouldNotReachHere();
  83       return G1HeapRegionTraceType::Free; // keep some compilers happy
  84   }
  85 }