Java HotSpot Virtual Machine

Hi

I have an existing 3rd party library written in c++ which uses pthreads for Thread Local storage. I am building a wrapper around it in JNI and invoking it from a multi-threaded java client. Threads are created in java.

In each java thread , i call a native method which initializes the library where TLS is created. Do these thread models match ? I think so because when i invoke pthread_self() in the native method , i get different thread ids for differetn java threads.
Can i synchronize shared data using pthread_rwlock in this scenario ?

Can the TLS and synchronization using pthreads api be done when invoking from a multi threaded java application using JNI ?
I am trying to run it on Solaris and HP-UX.

I have tried using pthread_rwlock_,,, in the native method impl , it behaves in a different manner. Write lock is an exclusive one. but still a writer acquires the lock when multiple readers have it.

Synchronization is not a showstopper. but the TLS thing is . I only have binaries for the c++ library. so it cannot be changed. It will be nice of you if you can tell , what are the effects on using pthread TLS in a java multithreaded scenario. I am not creating any pthreads on the native side.

Please help me in this regard,

Thanks in advance