1 /*
2  * Copyright (C) 2014 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 extern "C" int check_order_reloc_get_answer_impl();
18 
check_order_reloc_nephew_get_answer()19 extern "C" int check_order_reloc_nephew_get_answer() {
20   return check_order_reloc_get_answer_impl();
21 }
22 
23 namespace {
24 // The d-tor for this class is called on dlclose() -> __on_dlclose() -> __cxa_finalize()
25 // We use it to detect calls to prematurely unmapped libraries during dlclose.
26 // See also b/18338888
27 class CallNephewInDtor {
28  public:
~CallNephewInDtor()29   ~CallNephewInDtor() {
30     check_order_reloc_get_answer_impl();
31   }
32 } instance;
33 };
34 
get_instance()35 extern "C" void* get_instance() {
36   return &instance;
37 }
38