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8256425: Obsolete Biased Locking in JDK 18

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Reviewed-by: kvn, dholmes, dcubed, rrich
This commit is contained in:
Patricio Chilano Mateo 2021-06-24 18:54:41 +00:00
parent 595446bff4
commit 2fd7943ec1
165 changed files with 293 additions and 5261 deletions
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8
src/hotspot/share/cds/heapShared.cpp
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@ -137,8 +137,6 @@ void HeapShared::fixup_mapped_heap_regions() {
}
unsigned HeapShared::oop_hash(oop const& p) {
assert(!p->mark().has_bias_pattern(),
"this object should never have been locked"); // so identity_hash won't safepoin
unsigned hash = (unsigned)p->identity_hash();
return hash;
}
@ -416,11 +414,7 @@ void HeapShared::copy_roots() {
memset(mem, 0, size * BytesPerWord);
{
// This is copied from MemAllocator::finish
if (UseBiasedLocking) {
oopDesc::set_mark(mem, k->prototype_header());
} else {
oopDesc::set_mark(mem, markWord::prototype());
}
oopDesc::set_mark(mem, markWord::prototype());
oopDesc::release_set_klass(mem, k);
}
{