http://cr.openjdk.java.net/~jrose/7051206
This is a changed method name (and inverted sense), replacing SwitchPoint.isValid. Here's the updated javadoc: hasBeenInvalidated public boolean hasBeenInvalidated() Determines if this switch point has been invalidated yet. Discussion: Because of the one-way nature of invalidation, once a switch point begins to return true for hasBeenInvalidated, it will always do so in the future. On the other hand, a valid switch point visible to other threads may invalidated at any moment, due to a request by another thread. Since invalidation is a global and immediate operation, the execution of this query, on a valid switchpoint, must be internally sequenced with any other threads that could cause invalidation. This query may therefore be expensive. The recommended way to build a boolean-valued method handle which queries the invalidation state of a switch point s is to call s.guardWithTest on constant true and false method handles. Returns: true if this switch point has been invalidated
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