src/hotspot/share/runtime/biasedLocking.cpp

rev 56205 : imported patch 8226705-v1

*** 724,733 ****
--- 724,754 ----
    }
  
    assert(!obj->mark().has_bias_pattern(), "must not be biased");
  }
  
+ void BiasedLocking::revoke_own_locks(Handle obj, TRAPS) {
+   markWord mark = obj->mark();
+ 
+   if (!mark.has_bias_pattern()) {
+     return;
+   }
+ 
+   Klass *k = obj->klass();
+   markWord prototype_header = k->prototype_header();
+   assert(mark.biased_locker() == THREAD &&
+          prototype_header.bias_epoch() == mark.bias_epoch(), "Revoke failed, unhandled biased lock state");
+   ResourceMark rm;
+   log_info(biasedlocking)("Revoking bias by walking my own stack:");
+   EventBiasedLockSelfRevocation event;
+   BiasedLocking::walk_stack_and_revoke(obj(), (JavaThread*) THREAD);
+   ((JavaThread*) THREAD)->set_cached_monitor_info(NULL);
+   assert(!obj->mark().has_bias_pattern(), "invariant");
+   if (event.should_commit()) {
+     post_self_revocation_event(&event, k);
+   }
+ }
  
  void BiasedLocking::revoke(Handle obj, TRAPS) {
    assert(!SafepointSynchronize::is_at_safepoint(), "must not be called while at safepoint");
  
    while (true) {
*** 862,888 ****
      clean_up_cached_monitor_info();
    }
  }
  
  
- void BiasedLocking::revoke_at_safepoint(GrowableArray<Handle>* objs) {
-   assert(SafepointSynchronize::is_at_safepoint(), "must only be called while at safepoint");
-   int len = objs->length();
-   for (int i = 0; i < len; i++) {
-     oop obj = (objs->at(i))();
-     HeuristicsResult heuristics = update_heuristics(obj);
-     if (heuristics == HR_SINGLE_REVOKE) {
-       single_revoke_at_safepoint(obj, false, NULL, NULL);
-     } else if ((heuristics == HR_BULK_REBIAS) ||
-                (heuristics == HR_BULK_REVOKE)) {
-       bulk_revoke_at_safepoint(obj, (heuristics == HR_BULK_REBIAS), NULL);
-     }
-   }
-   clean_up_cached_monitor_info();
- }
- 
- 
  void BiasedLocking::preserve_marks() {
    if (!UseBiasedLocking)
      return;
  
    assert(SafepointSynchronize::is_at_safepoint(), "must only be called while at safepoint");
--- 883,892 ----