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8247912: Make narrowOop a scoped enum

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Reviewed-by: iklam, stefank
This commit is contained in:
Kim Barrett 2020-10-01 10:45:22 +00:00
parent 928da494a8
commit 2d9fa9da02
22 changed files with 88 additions and 55 deletions
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4
src/hotspot/share/oops/oop.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 2020, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -157,7 +157,7 @@ void* oopDesc::load_oop_raw(oop obj, int offset) {
uintptr_t addr = (uintptr_t)(void*)obj + (uint)offset;
if (UseCompressedOops) {
narrowOop narrow_oop = *(narrowOop*)addr;
if (narrow_oop == 0) return NULL;
if (CompressedOops::is_null(narrow_oop)) return NULL;
return (void*)CompressedOops::decode_raw(narrow_oop);
} else {
return *(void**)addr;