PFA tests that I had used to test jibx threading with. Jibx seems to
work fine even when a marshalling/unmarshalling context is shared among
multiple threads. I have made a eclipse project out of it.
The BindingThreadTest class has a main, in which you can specify the
class to marshall/unmarshall and the number of threads.
On my dual core 2 GHz, 2GB ram laptop for a simple class A, using JDK5
running in eclipse 3.2 (1024 MB heap)
public class A {
private String type;
private String description;
/* .... getters /setters ....*/
}
and using the mapping
<mapping name="a" class="jibx.model.A" value-style="attribute">
<value name="type" get-method="getType" set-method="setType"
style="attribute" usage="optional"/> <value name="description"
get-method="getDescription" set-method="setDescription" style="element"
usage="optional"/> </mapping>
for 3 threads gave the result
Doing test with single binding factory (shared marshall/unmarhall context)
Sleeping for 5 secs
Binding Thread 0 thread counter 179711
Binding Thread 1 thread counter 191826
Binding Thread 2 thread counter 181605
total 553142
Test with single binding factory complete
Doing test with single binding factory (a marshall/unmarhall context per
thread)
Sleeping for 5 secs
Binding Thread 0 thread counter 157672
Binding Thread 1 thread counter 213443
Binding Thread 2 thread counter 159835
total 530950
Test with single binding factory complete
Doing test with multiple binding factories
Sleeping for 5 secs
Binding Thread 0 thread counter 173586
Binding Thread 1 thread counter 189972
Binding Thread 2 thread counter 166449
total 530007
Test with multiple binding factories complete
Please note that the numbers indicate the number of times the operation
- object to xml, xml to object, object comparison - was done.
In the attachment zip, I have not included the jibx libs
bcel.jar
jibx-bind.jar
jibx-run.jar
xpp3.jar
, which will have to be put under the lib folder, of which the run and
xpp jars have to be part of the runtime class path.
cheers
Varghese C V
Dennis Sosnoski wrote:
> JiBX is designed to be usable by multiple threads, so long as the
> separate threads use different marshalling/unmarshalling contexts.
> There's always the possibility of some bug creeping in with this, but
> I don't know of any problems in this area. Are there any get/set
> methods being used by the binding that aren't threadsafe, or extension
> code being called?
>
> - Dennis
>
> Dennis M. Sosnoski
> SOA and Web Services in Java
> Training and Consulting
> http://www.sosnoski.com - http://www.sosnoski.co.nz
> Seattle, WA +1-425-939-0576 - Wellington, NZ +64-4-298-6117
>
>
>
> X Y wrote:
>
>> Hi all,
>>
>> I've got question about concurrent access to JiBX. Does JiBX is
>> secure for such access? I've encountered a problem. I've got binding
>> for one schema and use it from multiple threads. Each thread gets
>> BindingDirectory for a class which corresponds to root of the xml and
>> creates marshaling/unmarshaling context. But this causes the bound
>> classes receive some weird data. On the other hand, everything is ok
>> if I synchronize access to JiBX.
>>
>> So can I use JiBX from multiple threads?
>>
>> Thanks,
>> Jrx
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