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src/hotspot/share/oops/markOop.hpp
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rev 54621 : imported patch 8221734-v1
@@ -175,10 +175,19 @@
}
JavaThread* biased_locker() const {
assert(has_bias_pattern(), "should not call this otherwise");
return (JavaThread*) ((intptr_t) (mask_bits(value(), ~(biased_lock_mask_in_place | age_mask_in_place | epoch_mask_in_place))));
}
+ bool biased_locker_is(JavaThread* thread) const {
+ if (!has_bias_pattern()) {
+ return false;
+ }
+ // If current thread is not the owner it can be unbiased at anytime.
+ JavaThread* jt = (JavaThread*) ((intptr_t) (mask_bits(value(), ~(biased_lock_mask_in_place | age_mask_in_place | epoch_mask_in_place))));
+ return jt == thread;
+ }
+
// Indicates that the mark has the bias bit set but that it has not
// yet been biased toward a particular thread
bool is_biased_anonymously() const {
return (has_bias_pattern() && (biased_locker() == NULL));
}
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