<Beans Dev> Fwd: Re: [PATCH] test/jdk/java/beans/PropertyEditor/Test6397609.java failed in JITed code

Fu Jie fujie at loongson.cn
Tue Jan 8 04:02:20 UTC 2019


I think both "System.gc()" and "throw/catch OOM" are OK to trigger a GC.
I grepped jdk/test, and found that "System.gc()" was used 524 times and 
OOME was catched 330 times.
It seems that "System.gc()" is more widely used by developers.

Although I prefer "System.gc()" in this case, it doesn't mean I don't 
like "throw/catch OOM".
Probably I'd like to use "throw/catch OOM" to trigger a GC next time.

Thanks a lot.

Best regards,

On 2019/1/8 上午3:32, Sergey Bylokhov wrote:
> Hello,
> On 05/01/2019 16:05, Fu Jie wrote:
>> As far as I know, GC will finally be triggered if "System.gc()" is 
>> called repeatedly with the JVM flag -XX:-DisableExplicitGC.
> This option is specified with -XX, which are non-standard, not stable 
> and are subject to change without notice.
> So it is not necessary to use it in the test, since the same result 
> can be achieved differently.
> I do not see the problem in the "limit xmx" + "throw/catch OOM" + 
> "check the results".
> I guess this is only correct way to check it without possibility to 
> introduce infinite loop which checks weakref.get().
> Why don't you like it?

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