// We can see racers trying to place the same native function into place. Once // is plenty. address current = *native_function; if (current == function) return; if (post_event_flag && JvmtiExport::should_post_native_method_bind() && function != NULL) { // native_method_throw_unsatisfied_link_error_entry() should only // be passed when post_event_flag is false. assert(function != SharedRuntime::native_method_throw_unsatisfied_link_error_entry(), "post_event_flag mis-match");
// post the bind event, and possible change the bind function JvmtiExport::post_native_method_bind(this, &function); } *native_function = function; // This function can be called more than once. We must make sure that we always // use the latest registered method -> check if a stub already has been generated. // If so, we have to make it not_entrant. //加载字节码 CompiledMethod* nm = code(); // Put it into local variable to guard against concurrent updates if (nm != NULL) { nm->make_not_entrant(); } } //至此，本地方法注册入
