Application (GC) stuck in "_Jv_MarkArray" when doing "klass->getName();"

Mon Mar 20 12:21:00 GMT 2006

>> I haven't checked, but I'd be suspicious that getName allocates memory,
>> which acquires the GC lock, which is already held by the same thread.
>> (This is a non-reentrant lock. Which is good, because things would
>> fail in more complex ways if it weren't.)
> Well, going into getName seems to trace furhter to "_Jv_AllocString" 
> using "_Jv_AllocPtrFreeObj" or "_Jv_AllocPtrFreeObject" depending on the 
> state of "ENABLE_JVMPI". However, now things get deep for me - at least 
> at my current state of knowledge...
> So I don't really know where that leaves the question regarding the 
> non-reentrant lock... :-)
But if this is indeed a matter of locking, what other means do I have at 
that point (_Jv_MarkArray) to identify what the array is actually about?
// Martin
>> On 2006年3月18日, Martin Egholm Nielsen wrote:
>>>>> Hi there,
>>>>>> In my long and tiresome (for the rest of you) attempts to understand the
>>> doubling of my GC-times, I've now added some output to "_Jv_MarkArray"
>>> to get an idea of what and why there is suddenly an array given of
>>> length 170.000.
>>> (This attempt is a consequence of calling "gcj_describe_type_fn" from
>>> the GC, but it just halted.)
>>> So I added parts of the the code from "gcj_describe_type_fn" into
>>> _Jv_MarkArray:
>>>>>> if ( klass ) {
>>> printf( "MEN: 1\n" );
>>> jstring name = klass -> getName();
>>> printf( "MEN: 2\n" );
>>> } // if
>>>>>> However, when the GC gets to it, "1" is printed, "2" is not, and the GC
>>> is stuck in between.
>>> Anyone can tell me why this is not "allowed"/fails?
>>>>>> BR,
>>> Martin Egholm
>>>>>>>>>>>>