42 lines
2.2 KiB
Diff
42 lines
2.2 KiB
Diff
From 19da764152e382f53c5c0f7069f52d993c649818 Mon Sep 17 00:00:00 2001
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Date: Mon, 11 Nov 2019 16:59:01 +0000
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Subject: [PATCH] 8165857: CMS _overflow_list is missing volatile specifiers.
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Summary: <gc>: [backport of JDK-8165857][Change _overflow_list from "oop" to "oopDesc* volatile", both CMS and ParNew.]
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LLT: NA
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Bug url: http://hg.openjdk.java.net/jdk9/jdk9/hotspot/rev/f1ad14991f86
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---
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.../concurrentMarkSweep/concurrentMarkSweepGeneration.hpp | 2 +-
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hotspot/src/share/vm/gc_implementation/parNew/parNewGeneration.hpp | 2 +-
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2 files changed, 2 insertions(+), 2 deletions(-)
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diff --git a/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp b/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp
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index a6d06a5dc5..183a97185b 100644
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--- a/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp
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+++ b/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp
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@@ -556,7 +556,7 @@ class CMSCollector: public CHeapObj<mtGC> {
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// Overflow list of grey objects, threaded through mark-word
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// Manipulated with CAS in the parallel/multi-threaded case.
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- oop _overflow_list;
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+ oopDesc* volatile _overflow_list;
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// The following array-pair keeps track of mark words
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// displaced for accomodating overflow list above.
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// This code will likely be revisited under RFE#4922830.
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diff --git a/hotspot/src/share/vm/gc_implementation/parNew/parNewGeneration.hpp b/hotspot/src/share/vm/gc_implementation/parNew/parNewGeneration.hpp
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index 7685353ed1..5c6b6181fa 100644
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--- a/hotspot/src/share/vm/gc_implementation/parNew/parNewGeneration.hpp
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+++ b/hotspot/src/share/vm/gc_implementation/parNew/parNewGeneration.hpp
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@@ -326,7 +326,7 @@ class ParNewGeneration: public DefNewGeneration {
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// A list of from-space images of to-be-scanned objects, threaded through
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// klass-pointers (klass information already copied to the forwarded
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// image.) Manipulated with CAS.
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- oop _overflow_list;
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+ oopDesc* volatile _overflow_list;
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NOT_PRODUCT(ssize_t _num_par_pushes;)
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// If true, older generation does not support promotion undo, so avoid.
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--
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2.12.3
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