Wouldn't it be better to write a non-0 value when the computed hash code
is 0, so we don't have to recompute it? Is there some advantage to
writing 0 instead of any other value, such as 1?
dl
On 4/1/19 4:57 AM, Claes Redestad wrote:
Hi,
when a String has a calculated hash code value of 0, we recalculate and
store a 0 to the String.hash field every time (except for the empty
String, which is special cased). To make String objects more amenable to
storage in shared read-only memory, e.g., CDS archives, we should avoid
this redundant store.
Bug: https://bugs.openjdk.java.net/browse/JDK-8221723
Webrev: http://cr.openjdk.java.net/~redestad/8221723/
Testing: tier1-3, no regression on existing and new StringHashCode
micros
/Claes
