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8194741: Refactor oops in constant pool from CDS to use the Access API

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Reviewed-by: coleenp, jiangli
This commit is contained in:
Erik Österlund 2018-01-10 22:43:42 +01:00
parent 27cf4b91d1
commit 3a7a71981a
6 changed files with 33 additions and 26 deletions
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10
src/hotspot/share/oops/cpCache.cpp
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@ -33,6 +33,7 @@
#include "memory/metaspaceClosure.hpp"
#include "memory/resourceArea.hpp"
#include "memory/universe.inline.hpp"
#include "oops/access.inline.hpp"
#include "oops/cpCache.hpp"
#include "oops/objArrayOop.inline.hpp"
#include "oops/oop.inline.hpp"
@ -753,13 +754,16 @@ void ConstantPoolCache::deallocate_contents(ClassLoaderData* data) {
#if INCLUDE_CDS_JAVA_HEAP
oop ConstantPoolCache::archived_references() {
assert(UseSharedSpaces, "UseSharedSpaces expected.");
return oopDesc::decode_heap_oop(_archived_references);
// Loading an archive root forces the oop to become strongly reachable.
// For example, if it is loaded during concurrent marking in a SATB
// collector, it will be enqueued to the SATB queue, effectively
// shading the previously white object gray.
return RootAccess<IN_ARCHIVE_ROOT>::oop_load(&_archived_references);
}
void ConstantPoolCache::set_archived_references(oop o) {
assert(DumpSharedSpaces, "called only during runtime");
_archived_references = oopDesc::encode_heap_oop(o);
RootAccess<IN_ARCHIVE_ROOT>::oop_store(&_archived_references, o);
}
#endif