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      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 #include <stdio.h>
     17 #include <stdlib.h>
     18 
     19 #include <string>
     20 
     21 // use external control number from main test
     22 static std::string* atexit_sequence = nullptr;
     23 static bool* atexit_valid_this_in_static_dtor = nullptr;
     24 static bool* atexit_attr_dtor_called = nullptr;
     25 
     26 static int cxx_ctor_called = 0;
     27 static int attr_ctor_called = 0;
     28 
     29 static class AtExitStaticClass {
     30  public:
     31   AtExitStaticClass() {
     32     expected_this = this;
     33     cxx_ctor_called = 1;
     34   }
     35   ~AtExitStaticClass() {
     36     if (atexit_valid_this_in_static_dtor) {
     37       *atexit_valid_this_in_static_dtor = (expected_this == this);
     38     }
     39   }
     40  private:
     41   static const AtExitStaticClass* expected_this;
     42 
     43 } static_obj;
     44 
     45 const AtExitStaticClass* AtExitStaticClass::expected_this = nullptr;
     46 
     47 // 4
     48 static void atexit_handler_from_atexit_from_atexit2() {
     49   *atexit_sequence += " on";
     50 }
     51 
     52 // 3
     53 static void atexit_handler_from_atexit_from_atexit1() {
     54   *atexit_sequence += " sat";
     55 }
     56 
     57 // 2
     58 static void atexit_handler_from_atexit() {
     59   *atexit_sequence += " Dumpty";
     60   // register 2 others
     61   atexit(atexit_handler_from_atexit_from_atexit2);
     62   atexit(atexit_handler_from_atexit_from_atexit1);
     63 }
     64 
     65 // 1
     66 static void atexit_handler_with_atexit() {
     67   *atexit_sequence += "Humpty";
     68   atexit(atexit_handler_from_atexit);
     69 }
     70 
     71 // last
     72 static void atexit_handler_regular() {
     73   *atexit_sequence += " a wall";
     74 }
     75 
     76 // attribute c-tor and d-tor
     77 static void __attribute__((constructor)) atexit_attr_ctor() {
     78   attr_ctor_called = 1;
     79 }
     80 
     81 static void __attribute__((destructor)) atexit_attr_dtor() {
     82   if (atexit_attr_dtor_called) {
     83     *atexit_attr_dtor_called = true;
     84   }
     85 }
     86 
     87 extern "C" void register_atexit(std::string* sequence, bool* valid_this_in_static_dtor, bool* attr_dtor_called) {
     88   atexit_sequence = sequence;
     89   atexit_valid_this_in_static_dtor = valid_this_in_static_dtor;
     90   atexit_attr_dtor_called = attr_dtor_called;
     91   atexit(atexit_handler_regular);
     92   atexit(atexit_handler_with_atexit);
     93 }
     94 
     95 extern "C" int get_cxx_ctor_called() {
     96   return cxx_ctor_called;
     97 }
     98 
     99 extern "C" int get_attr_ctor_called() {
    100   return attr_ctor_called;
    101 }
    102 
    103