On Fri, 5 Dec 2025 21:24:41 GMT, Roger Riggs <[email protected]> wrote:
> The alternate hashcode compution is enabled when the alternate > subsitutability method is enabled with: `-XX:+UseAltSubstitutabilityMethod`. > The IdentityHashCode is computed using the map of field offsets and sizes > from Unsafe. > The basis of hashCode is the the hashCode of the object's class mixing in the > values from the memory where the fields are placed and the hashCode of each > reference. > > The changes to Hotspot invoke the original or the alternate Java method based > on the VM `UseAltSubstitutabilityMethod` command line flag. This pull request has now been integrated. Changeset: 9f73e019 Author: Roger Riggs <[email protected]> URL: https://git.openjdk.org/valhalla/commit/9f73e0195931e6840b8cbc442f0a6c0e81bbe8a2 Stats: 85 lines in 7 files changed: 71 ins; 0 del; 14 mod 8370714: [lworld] Reimplement System.identityHashCode for Value Objects Reviewed-by: liach, fparain ------------- PR: https://git.openjdk.org/valhalla/pull/1773
