OpenJDK / jdk / jdk
changeset 51208:0d2e45b25c3d
8207056: Epsilon GC to support object pinning
Summary: Epsilon GC to use object pinning to avoid expensive GCLocker
Reviewed-by: shade, rkennke
| author | zgu |
|---|---|
| date | Wed, 11 Jul 2018 13:55:38 -0400 |
| parents | fc24da4898f1 |
| children | 4630bb315ec0 |
| files | src/hotspot/share/gc/epsilon/epsilonHeap.hpp |
| diffstat | 1 files changed, 5 insertions(+), 0 deletions(-) [+] |
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--- a/src/hotspot/share/gc/epsilon/epsilonHeap.hpp Thu Jul 19 14:25:42 2018 -0700 +++ b/src/hotspot/share/gc/epsilon/epsilonHeap.hpp Wed Jul 11 13:55:38 2018 -0400 @@ -121,6 +121,11 @@ safe_object_iterate(cl); } + // Object pinning support: every object is implicitly pinned + virtual bool supports_object_pinning() const { return true; } + virtual oop pin_object(JavaThread* thread, oop obj) { return obj; } + virtual void unpin_object(JavaThread* thread, oop obj) { } + // No support for block parsing. virtual HeapWord* block_start(const void* addr) const { return NULL; } virtual size_t block_size(const HeapWord* addr) const { return 0; }