26 lines
963 B
Diff
26 lines
963 B
Diff
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From 02cc67fd514c34cffc61bc89da39a9ff8a05ae69 Mon Sep 17 00:00:00 2001
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Date: Wed, 8 Dec 2021 09:59:36 +0800
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Subject: [PATCH] Add prefetch before copy in
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PSPromotionManager::copy_to_survivor_space
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---
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src/hotspot/share/gc/parallel/psPromotionManager.inline.hpp | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/src/hotspot/share/gc/parallel/psPromotionManager.inline.hpp b/src/hotspot/share/gc/parallel/psPromotionManager.inline.hpp
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index 5eb6a20b0..a0149e447 100644
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--- a/src/hotspot/share/gc/parallel/psPromotionManager.inline.hpp
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+++ b/src/hotspot/share/gc/parallel/psPromotionManager.inline.hpp
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@@ -248,6 +248,8 @@ inline oop PSPromotionManager::copy_unmarked_to_survivor_space(oop o,
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assert(new_obj != NULL, "allocation should have succeeded");
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+ Prefetch::write(new_obj, PrefetchCopyIntervalInBytes);
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+
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// Copy obj
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Copy::aligned_disjoint_words(cast_from_oop<HeapWord*>(o), cast_from_oop<HeapWord*>(new_obj), new_obj_size);
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--
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2.19.0
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