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};
uint32_t debug_bits = 0;
// first derive the object's owner and entry_count (if any)
{
- // Revoke any biases before querying the mark word
- BiasedLocking::revoke_at_safepoint(hobj);
-
- address owner = NULL;
- {
- markWord mark = hobj()->mark();
-
- if (!mark.has_monitor()) {
- // this object has a lightweight monitor
-
- if (mark.has_locker()) {
- owner = (address)mark.locker(); // save the address of the Lock word
- }
- // implied else: no owner
- } else {
- // this object has a heavyweight monitor
- mon = mark.monitor();
-
- // The owner field of a heavyweight monitor may be NULL for no
- // owner, a JavaThread * or it may still be the address of the
- // Lock word in a JavaThread's stack. A monitor can be inflated
- // by a non-owning JavaThread, but only the owning JavaThread
- // can change the owner field from the Lock word to the
- // JavaThread * and it may not have done that yet.
- owner = (address)mon->owner();
- }
- }
-
- if (owner != NULL) {
- // This monitor is owned so we have to find the owning JavaThread.
- owning_thread = Threads::owning_thread_from_monitor_owner(tlh.list(), owner);
- assert(owning_thread != NULL, "owning JavaThread must not be NULL");
- Handle th(current_thread, owning_thread->threadObj());
- ret.owner = (jthread)jni_reference(calling_thread, th);
- }
+ owning_thread = ObjectSynchronizer::get_lock_owner(tlh.list(), hobj);
if (owning_thread != NULL) { // monitor is owned
// The recursions field of a monitor does not reflect recursions
// as lightweight locks before inflating the monitor are not included.
// We have to count the number of recursive monitor entries the hard way.
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