+JNIEXPORT void JNICALL
+Java_org_simgrid_msg_Mutex_nativeInit(JNIEnv *env, jclass cls) {
+ jsyncro_field_Mutex_bind = jxbt_get_sfield(env, "org/simgrid/msg/Mutex", "bind", "J");
+ if (!jsyncro_field_Mutex_bind) {
+ jxbt_throw_native(env,bprintf("Can't find some fields in Java class. You should report this bug."));
+ }
+}