Re: [rvm-research] Scalar allocation

> Hi Dingwen,
>
> It is possible that allocation of some objects can be optimized away.
> You can't really deal with that except to just accept that it happens.
> If you need determinism (because you can't always guarantee that the opt
> compiler *will* optimize away a given allocation), use the baseline
> compiler - one possibility is to do a FastAdaptive build, and use
>
>  -X:aos:initial_compiler=base -X:aos:enable_recompilation=false
>
> to get baseline compiled application code with an optimized VM.
>
> When you say 'the execution of this function can be optimized away', are
> you referring to the compiler inlining this method ?  Your
> instrumentation will still be executed if this happens.
>
> My preference has always been to instrument the method
> MemoryManager.allocateScalar, but I think the method you're using should
> be equally valid.
>
> Regards,
> Robin
>
> Dingwen Yuan wrote:
>> Hi all,
>>
>> Suppose I want to capture the allocation of all scalar objects. I did
>> so by adding some code in the function "public static Object
>> resolvedNewScalar(int size, Object[] tib, boolean hasFinalizer, int
>> allocator, int align,int offset, int site)", however I found, with an
>> opt compilation, the execution of this function can be optimized away.
>> Is it possible to have such a situation? And what can I do to capture
>> those objects?
>>
>> regards,
>>
>> Dingwen
>>
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>
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