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annotate src/share/vm/gc_implementation/g1/heapRegionType.cpp @ 20504:6948da6d7c13

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8052172: Evacuation failure handling in G1 does not evacuate all objects if -XX:-G1DeferredRSUpdate is set Summary: Remove -XX:-G1DeferredRSUpdate functionality as it is racy. During evacuation failure handling, threads where evacuation failure handling occurred may try to add remembered sets to regions which remembered sets are currently being scanned. The iterator to handle the remembered set scan does not support addition of entries during scan and so may skip valid references. Reviewed-by: iveresov, brutisso, mgerdin
author tschatzl
date Tue, 30 Sep 2014 09:44:36 +0200
parents c02ec279b062
children
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20481
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1 /*
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2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #include "precompiled.hpp"
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26 #include "gc_implementation/g1/heapRegionType.hpp"
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27
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28 bool HeapRegionType::is_valid(Tag tag) {
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29 switch (tag) {
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30 case FreeTag:
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31 case EdenTag:
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32 case SurvTag:
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33 case HumStartsTag:
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34 case HumContTag:
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35 case OldTag:
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36 return true;
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37 }
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38 return false;
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39 }
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40
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41 const char* HeapRegionType::get_str() const {
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42 hrt_assert_is_valid(_tag);
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43 switch (_tag) {
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44 case FreeTag: return "FREE";
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45 case EdenTag: return "EDEN";
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46 case SurvTag: return "SURV";
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47 case HumStartsTag: return "HUMS";
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48 case HumContTag: return "HUMC";
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49 case OldTag: return "OLD";
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50 }
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51 ShouldNotReachHere();
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52 // keep some compilers happy
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53 return NULL;
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54 }
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55
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56 const char* HeapRegionType::get_short_str() const {
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57 hrt_assert_is_valid(_tag);
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58 switch (_tag) {
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59 case FreeTag: return "F";
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60 case EdenTag: return "E";
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61 case SurvTag: return "S";
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62 case HumStartsTag: return "HS";
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63 case HumContTag: return "HC";
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64 case OldTag: return "O";
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65 }
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66 ShouldNotReachHere();
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67 // keep some compilers happy
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68 return NULL;
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69 }