RFR: 8301737: java/rmi/server/UnicastRemoteObject/serialFilter/FilterUROTest.java fail with -Xcomp [v4]

[Roger Riggs]

On Thu, 9 Feb 2023 08:48:17 GMT, SUN Guoyun <duke at openjdk.org> wrote:

>> Hi all,
>> When -Xcomp be used, this testcase will use more codecaches, causing the GC to be triggered early, then causing this test failed on LoongArch64 architecture.
>> 
>> This PR fix the issue, Please help review it.
>> 
>> Thanks.
>
> SUN Guoyun has updated the pull request incrementally with one additional commit since the last revision:
> 
>   8301737: java/rmi/server/UnicastRemoteObject/serialFilter/FilterUROTest.java fail with -Xcomp

Changes requested by rriggs (Reviewer).

test/jdk/java/rmi/server/UnicastRemoteObject/serialFilter/FilterUROTest.java line 74:

> 72:     public void useExportObject(String name, Object obj, int expectedFilterCount) throws RemoteException {
> 73:         try {
> 74:             impl = RemoteImpl.create();

I'd prefer to use  ReachabilityFence at the end of the try block to keep the nested scoping.
```Reference.reachabilityFence(impl);```

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PR: https://git.openjdk.org/jdk/pull/12399