RFR: 8288064: Class initialization locking

[David Holmes]

On Mon, 13 Jun 2022 17:02:44 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

> Use a native JVM monitor and state for mutual exclusion for class linking and initialization.  See CR for more details.
> Tested with tier1-8. tiers 1-4 on Oracle supported platforms and 5-8 on linux-x64-debug.  There isn't any platform dependent code in this change.

src/hotspot/share/oops/cpCache.cpp line 269:

> 267:     if (invoke_code == Bytecodes::_invokestatic) {
> 268:       assert(method->method_holder()->is_initialized() ||
> 269:              method->method_holder()->is_reentrant(Thread::current()),

Please change this back - `is_reentrant` has no meaning by itself, reentrant with respect to what?

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PR: https://git.openjdk.org/jdk/pull/9141