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8234562: Move OrderAccess::release_store*/load_acquire to Atomic

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Reviewed-by: rehn, dholmes
This commit is contained in:
Stefan Karlsson 2019-11-25 12:22:13 +01:00
parent e06c17ce33
commit e527ce4b57
97 changed files with 554 additions and 570 deletions
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8
src/hotspot/share/oops/klass.cpp
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@ -362,7 +362,7 @@ InstanceKlass* Klass::superklass() const {
Klass* Klass::subklass(bool log) const {
// Need load_acquire on the _subklass, because it races with inserts that
// publishes freshly initialized data.
for (Klass* chain = OrderAccess::load_acquire(&_subklass);
for (Klass* chain = Atomic::load_acquire(&_subklass);
chain != NULL;
// Do not need load_acquire on _next_sibling, because inserts never
// create _next_sibling edges to dead data.
@ -402,7 +402,7 @@ Klass* Klass::next_sibling(bool log) const {
void Klass::set_subklass(Klass* s) {
assert(s != this, "sanity check");
OrderAccess::release_store(&_subklass, s);
Atomic::release_store(&_subklass, s);
}
void Klass::set_next_sibling(Klass* s) {
@ -427,7 +427,7 @@ void Klass::append_to_sibling_list() {
super->clean_subklass();
for (;;) {
Klass* prev_first_subklass = OrderAccess::load_acquire(&_super->_subklass);
Klass* prev_first_subklass = Atomic::load_acquire(&_super->_subklass);
if (prev_first_subklass != NULL) {
// set our sibling to be the superklass' previous first subklass
assert(prev_first_subklass->is_loader_alive(), "May not attach not alive klasses");
@ -446,7 +446,7 @@ void Klass::append_to_sibling_list() {
void Klass::clean_subklass() {
for (;;) {
// Need load_acquire, due to contending with concurrent inserts
Klass* subklass = OrderAccess::load_acquire(&_subklass);
Klass* subklass = Atomic::load_acquire(&_subklass);
if (subklass == NULL || subklass->is_loader_alive()) {
return;
}