--- a/src/hotspot/share/runtime/safepoint.cpp Mon Jul 02 09:38:20 2018 +0200
+++ b/src/hotspot/share/runtime/safepoint.cpp Mon Jul 02 11:46:15 2018 +0200
@@ -243,9 +243,10 @@
if (SafepointMechanism::uses_thread_local_poll()) {
// Arming the per thread poll while having _state != _not_synchronized means safepointing
log_trace(safepoint)("Setting thread local yield flag for threads");
+ OrderAccess::storestore(); // storestore, global state -> local state
for (JavaThreadIteratorWithHandle jtiwh; JavaThread *cur = jtiwh.next(); ) {
// Make sure the threads start polling, it is time to yield.
- SafepointMechanism::arm_local_poll(cur); // release store, global state -> local state
+ SafepointMechanism::arm_local_poll(cur);
}
}
OrderAccess::fence(); // storestore|storeload, global state -> local state
@@ -546,7 +547,7 @@
for (; JavaThread *current = jtiwh.next(); ) {
ThreadSafepointState* cur_state = current->safepoint_state();
cur_state->restart(); // TSS _running
- SafepointMechanism::disarm_local_poll(current); // release store, local state -> polling page
+ SafepointMechanism::disarm_local_poll(current);
}
log_info(safepoint)("Leaving safepoint region");
} else {