> This is needed for performance improvements in support of virtual threads. > The update includes the following: > > 1. Refactored the `VirtualThread` native methods: > `notifyJvmtiMountBegin` and `notifyJvmtiMountEnd` => > `notifyJvmtiMount` > `notifyJvmtiUnmountBegin` and `notifyJvmtiUnmountEnd` => > `notifyJvmtiUnmount` > 2. Still useful implementation of old native methods is moved from `jvm.cpp` > to `jvmtiThreadState.cpp`: > `JVM_VirtualThreadMountStart` => `VTMS_mount_begin` > `JVM_VirtualThreadMountEnd` => `VTMS_mount_end` > `JVM_VirtualThreadUnmountStart` = > `VTMS_unmount_begin` > `JVM_VirtualThreadUnmountEnd` => `VTMS_mount_end` > 3. Intrinsified the `VirtualThread` native methods: `notifyJvmtiMount`, > `notifyJvmtiUnmount`, `notifyJvmtiHideFrames`. > 4. Removed the`VirtualThread` static boolean state variable > `notifyJvmtiEvents` and its support in `javaClasses`. > 5. Added static boolean state variable `_VTMS_notify_jvmti_events` to the > jvmtiVTMSTransitionDisabler class as a replacement of the `VirtualThread` > `notifyJvmtiEvents` variable. > > Implementing the same methods as C1 intrinsics can be needed in the future > but is a low priority for now. > > Testing: > - Ran mach5 tiers 1-6. No regressions were found.
Serguei Spitsyn has updated the pull request incrementally with one additional commit since the last revision: address pre-review comments from Leonid ------------- Changes: - all: https://git.openjdk.org/jdk/pull/13054/files - new: https://git.openjdk.org/jdk/pull/13054/files/397b6337..f3692263 Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=13054&range=02 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=13054&range=01-02 Stats: 22 lines in 2 files changed: 14 ins; 4 del; 4 mod Patch: https://git.openjdk.org/jdk/pull/13054.diff Fetch: git fetch https://git.openjdk.org/jdk pull/13054/head:pull/13054 PR: https://git.openjdk.org/jdk/pull/13054
