>>>>> Jason Dillon writes:
Jason> This is not really java-linux specific, but this is the
Jason> only java related group that I am subscribed to. I am
Jason> wondering if a native method is specified as synchronized
Jason> if the jvm will perform the proper MontiorEnter &
Jason> MonitorExit calls or if I should call them in the native
Jason> method.
Jason> So for example... does:
Jason> native public synchronized byte[] getBytes ();
Jason> imply:
Jason> JNIEXPORT jbyteArray JNICALL Java_<Package>_<Class>_getBytes
Jason> (JNIEnv *env, jobject jthis)
Jason> {
Jason> (*env)->MonitorEnter(env, jthis);
Jason> /* do something */
Jason> (*env)->MonitorExit(env, jthis);
Jason> return /* some jbyteArray */;
Jason> }
Not exactly, the method indeed is synchronized but the synchronization
is part of the method invocation and return. Section 7.14 of the
virtual machine specification has more details about that:
http://java.sun.com/docs/books/vmspec/html/Compiling.doc.html#6530
Juergen
--
Juergen Kreileder, Universitaet Dortmund, Lehrstuhl Informatik V
Baroper Strasse 301, D-44221 Dortmund, Germany
Phone: ++49 231/755-5806, Fax: ++49 231/755-5802
