[PATCH] 4851444: Exposing sun.reflect.Reflection#getCallerClass as a public API in Java 8
mandy.chung at oracle.com
Fri Sep 20 19:25:13 UTC 2013
On 9/20/13 1:58 AM, Jochen Theodorou wrote:
> Am 20.09.2013 09:09, schrieb Mandy Chung:
>> Stack is a "stream" that allows you to walk partial stack (e.g. find
>> caller) or full stack trace (e.g. throwable). The filtering and mapping
>> operations are lazy to avoid having the VM eagerly copying the entire
>> stack trace data even for the short reach case (like Groovy and Log4j).
> and is there a link to StackStram too?
No. The concrete implementation is yet to be done and it would need a
new VM entry point that the library code to use.
It's not interesting to read what I did in my hack version that is
intended to help design how the API works with the use cases.
> The Thread#walkStack methods don't really describe the behaviour of
> the consumer. Will the consumer applied only once, or multiple times?
Apply once to each element like Iterable.forEach.
> If only once, then to replace getCallerClass(int depth), you will need
> the version with the predicate, which will be difficult to realize
> with a simple lambda, since you will need to count as well.
Ah... I see what you need as you mentioned in . Thread.getCaller
skips the first frame that matches the predicate and you want to be able
to control the number of skips. Just curious - do you mind explaining
what the matchLevel is in
matchLevel, Collection<String> extraIgnoredPackages)?
I understand matchLevel == 1 when you look for the immediate caller.
Understand what situation do you look for matchLevel > 1?
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