On Thu, 1 Jun 2023 15:17:41 GMT, Chen Liang <li...@openjdk.org> wrote:
>> As John Rose has pointed out in this issue, the current j.l.r.Proxy based >> implementation of MethodHandleProxies.asInterface has a few issues: >> 1. Exposes too much information via Proxy supertype (and WrapperInstance >> interface) >> 2. Does not allow future expansion to support SAM[^1] abstract classes >> 3. Slow (in fact, very slow) >> >> This patch addresses all 3 problems: >> 1. It updates the WrapperInstance methods to take an `Empty` to avoid method >> clashes >> 2. This patch obtains already generated classes from a ClassValue by the >> requested interface type; the ClassValue can later be updated to compute >> implementation generation for abstract classes as well. >> 3. This patch's faster than old implementation in general. >> >> >> Benchmark Mode Cnt >> Score Error Units >> MethodHandleProxiesAsIFInstance.baselineAllocCompute avgt 15 >> 1.483 ± 0.025 ns/op >> MethodHandleProxiesAsIFInstance.baselineCompute avgt 15 >> 0.264 ± 0.006 ns/op >> MethodHandleProxiesAsIFInstance.testCall avgt 15 >> 1.773 ± 0.040 ns/op >> MethodHandleProxiesAsIFInstance.testCreate avgt 15 >> 16.754 ± 0.411 ns/op >> MethodHandleProxiesAsIFInstance.testCreateCall avgt 15 >> 19.609 ± 1.598 ns/op >> MethodHandleProxiesAsIFInstanceCall.callDoable avgt 15 >> 0.424 ± 0.024 ns/op >> MethodHandleProxiesAsIFInstanceCall.callHandle avgt 15 >> 1.936 ± 0.008 ns/op >> MethodHandleProxiesAsIFInstanceCall.callInterfaceInstance avgt 15 >> 1.766 ± 0.014 ns/op >> MethodHandleProxiesAsIFInstanceCall.callLambda avgt 15 >> 0.414 ± 0.005 ns/op >> MethodHandleProxiesAsIFInstanceCall.constantDoable avgt 15 >> 0.271 ± 0.006 ns/op >> MethodHandleProxiesAsIFInstanceCall.constantHandle avgt 15 >> 0.263 ± 0.004 ns/op >> MethodHandleProxiesAsIFInstanceCall.constantInterfaceInstance avgt 15 >> 0.266 ± 0.005 ns/op >> MethodHandleProxiesAsIFInstanceCall.constantLambda avgt 15 >> 0.262 ± 0.003 ns/op >> MethodHandleProxiesAsIFInstanceCall.direct avgt 15 >> 0.264 ± 0.005 ns/op >> MethodHandleProxiesAsIFInstanceCreate.createCallInterfaceInstance avgt 15 >> 18.000 ± 0.181 ns/op >> MethodHandleProxiesAsIFInstanceCreat... > > Chen Liang has updated the pull request with a new target base due to a merge > or a rebase. The incremental webrev excludes the unrelated changes brought in > by the merge/rebase. The pull request contains 36 additional commits since > the last revision: > > - Some changes per Mandy's review. SecurityManager test fails in this patch > - Merge branch 'master' into explore/mhp-iface > - Merge branch 'master' into explore/mhp-iface > - Merge branch 'master' into explore/mhp-iface > - stage, needs to fix is mh proxy instance check > - Merge branch 'master' into explore/mhp-iface > - Remove assertion, no longer true with teleport definition in MHP > - Fix tabs, and tests about modules and constructor access > - stupid faults > - Revert to shared-class implementation, found a way to deal with security > manager > - ... and 26 more: https://git.openjdk.org/jdk/compare/e6f1393e...56a282e4 Thanks for the update. The security permission check is done regardless of whether it passes the access check. So the generated code can't access internal API. For now, I think you can go back to spin bytecode for the check as done in Proxy. We will consider if it can be replaced by a public API in the future. ------------- PR Comment: https://git.openjdk.org/jdk/pull/13197#issuecomment-1572468328
