Simone,
I still don't see the problem clearly, please help me.
|> Where does the "loadClassInternal()" intervene?
|
|It is called by the JVM when it has to resolve class dependencies.
ok
|Say you have class A that has a data member of class B.
|When a CL is asked to load A, it inspects the class and see that
|it needs to load also B. This is done at native level, and while a
|classloader is loading class A, the JVM calls loadClassInternal()
|on the *same* thread and on the *same* classloader to load class
|B; this may trigger another call and so on recursively. If the
ok
|classloader delegates to some other classloader you can have deadlock.
this I don't see, you seem to jump to the conclusion, can you please walk
me?
|There is a call for loadClass, some more call on java code, then a
|call to native method, and if the native method decides it has no
|sufficient information it calls back java code, it's java ->
|native -> java.
|
|loadClass()
| ...
| defineClass() [is this the native one ?]
| loadClassInternal()
| loadClass()
So if loadClassInternal fails it goes to the "loadClass()" in our stack?
cl1.loadClass("A")
A refers to B
cl1.loadClassInternal("B") fails
cl1.loadClass("B") is then called.
is that correct?
And then ...?
|A typical scenario for me was this one: jar1 with a set of related
|classes, and jar2 with another set, but the 2 jars interacts and
|are loaded by different classloaders. When something is "started"
|in jar1, not all classes in the jar are loaded; the "start"
|triggers loading from jar2 that happens to load some class from
|jar1 that was not already loaded.
I am lost.
Let's say
jar1:set1:cl1 has classes A and C
jar2:set2:cl2 has class B
A and B reference C
A starts up loads A, loads class internal C (I assume it finds it) but it is
not in the repository (internal call).
In a mono threaded JBoss, B is loaded up by cl2.load("B"), which doesn't
find it, starts up, needs to load C and so cl2.loadCint("B") fails goes to
cl2.load(B) which goes repository.load(B) which then goes to cl1.load(B)
which should work.
Let's imagine a multithreaded JBoss where the service A spawns a thread.
please help
marcf
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