The GCs scan and handles nmethods and ignores CodeBlobs of other kinds. The I propose that we stop sending in CodeBlobs to the GCs and make sure to only give them nmethods.
I removed `void CodeCache::blobs_do(CodeBlobClosure* f)` since there's no more usage of that function. Is this OK? I also opted to skipped calling the GC verification code from the iterator code: Universe::heap()->verify_nmethod((nmethod*)cb); IMHO, I think it is up to the GCs to decide if they want to perform extra nmethod verification. If someone wants to keep this verification in their favorite GC I can add calls to this function where we used to call CodeCache::blobs_do. I've only done limited testing and will run extensive testing concurrent with the review. ------------- Commit messages: - 8329629: GC interfaces should work directly against nmethod instead of CodeBlob Changes: https://git.openjdk.org/jdk/pull/18653/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18653&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8329629 Stats: 850 lines in 74 files changed: 238 ins; 318 del; 294 mod Patch: https://git.openjdk.org/jdk/pull/18653.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/18653/head:pull/18653 PR: https://git.openjdk.org/jdk/pull/18653
