> Hi, > > this is the continuation of the review of the implementation for: > > https://bugs.openjdk.java.net/browse/JDK-8227745 > https://bugs.openjdk.java.net/browse/JDK-8233915 > > It allows for JIT optimizations based on escape analysis even if JVMTI agents > acquire capabilities to access references > to objects that are subject to such optimizations, e.g. scalar replacement. > The implementation reverts such > optimizations just before access very much as when switching from JIT > compiled execution to the interpreter, aka > "deoptimization". Webrev.8 was the last one before before the transition to > Git/Github: > > http://cr.openjdk.java.net/~rrich/webrevs/8227745/webrev.8/ > > Thanks, Richard.
Richard Reingruber has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 29 commits: - Merge branch 'master' into JDK-8227745 - Removed cross_modify_fence from JT::wait_for_object_deoptimization(). See JDK-8254264. - handle_special_runtime_exit_condition(): wait (blocked) for obj. deoptimization _before_ async ex. check. - Removed unused parameter from EscapeBarrierSuspendHandshake. - Adaptations to JDK-8254263: Remove special_runtime_exit_condition() check from ~ThreadInVMForHandshake() With JDK-8254263 the special_runtime_exit_condition() check was removed from ~ThreadInVMForHandshake() because now a thread never becomes unsafe when processing its own handshakes. EscapeBarrier uses handshakes to sync with the target thread for object deoptimization so we add a check for object deoptimization to ThreadSafepointState::handle_polling_page_exception(). In JavaThread::wait_for_object_deoptimization() we must check is_obj_deopt_suspend() again after handshake/safepoint processing because a handshake for obj. deopt suspend could have been processed. - Adaptions to lazy/concurrent thread stack processing for ZGC (JEP 376) - EATests.java improvements - Merge branch 'master' into JDK-8227745 - The constructor of StackFrameStream takes more parameters after JDK-8253180 - Merge branch 'master' into JDK-8227745 - ... and 19 more: https://git.openjdk.java.net/jdk/compare/1da28de8...8d09747b ------------- Changes: https://git.openjdk.java.net/jdk/pull/119/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=119&range=13 Stats: 5860 lines in 53 files changed: 5642 ins; 116 del; 102 mod Patch: https://git.openjdk.java.net/jdk/pull/119.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/119/head:pull/119 PR: https://git.openjdk.java.net/jdk/pull/119
