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// To work around b/25643775, we disable clang optimization so that
18//   VTT for std::__1::basic_stringstream<char, std::__1::char_traits<char>,
19//   std::__1::allocator<char> >
20// will be correctly kept for other module's references.
21#if defined(__clang__) && (defined(__arm__) || defined(__aarch64__))
22#pragma clang optimize off
23#endif
24#include <gtest/gtest.h>
25#if defined(__clang__) && (defined(__arm__) || defined(__aarch64__))
26#pragma clang optimize on
27#endif
28
29#include <dlfcn.h>
30#include <libgen.h>
31#include <limits.h>
32#include <stdio.h>
33#include <stdint.h>
34
35#include <string>
36
37TEST(atexit, sofile) {
38  std::string atexit_call_sequence;
39  bool valid_this_in_static_dtor = false;
40  bool attr_dtor_called = false;
41
42  void* handle = dlopen("libtest_atexit.so", RTLD_NOW);
43  ASSERT_TRUE(handle != nullptr);
44
45  typedef int (*int_fn)(void);
46  int_fn get_cxx_ctor_called, get_attr_ctor_called;
47  get_cxx_ctor_called = reinterpret_cast<int_fn>(dlsym(handle, "get_cxx_ctor_called"));
48  get_attr_ctor_called = reinterpret_cast<int_fn>(dlsym(handle, "get_attr_ctor_called"));
49  ASSERT_TRUE(get_cxx_ctor_called != nullptr);
50  ASSERT_TRUE(get_attr_ctor_called != nullptr);
51
52  ASSERT_EQ(1, get_cxx_ctor_called());
53  ASSERT_EQ(1, get_attr_ctor_called());
54
55  void* sym = dlsym(handle, "register_atexit");
56  ASSERT_TRUE(sym != nullptr);
57  reinterpret_cast<void (*)(std::string*, bool*, bool*)>(sym)(&atexit_call_sequence, &valid_this_in_static_dtor, &attr_dtor_called);
58
59  ASSERT_EQ(0, dlclose(handle));
60  // this test verifies atexit call from atexit handler. as well as the order of calls
61  ASSERT_EQ("Humpty Dumpty sat on a wall", atexit_call_sequence);
62  ASSERT_TRUE(valid_this_in_static_dtor);
63  ASSERT_TRUE(attr_dtor_called);
64}
65
66class TestMainStaticDtorClass {
67 public:
68  TestMainStaticDtorClass() {
69    expected_this = this;
70  }
71
72  ~TestMainStaticDtorClass() {
73    if (this != expected_this) {
74      fprintf(stderr, "\nerror: static d-tor called with incorrect this pointer: %p, expected: %p\n", this, expected_this);
75    } else {
76      fprintf(stderr, "6");
77    }
78  }
79 private:
80  static const TestMainStaticDtorClass* expected_this;
81};
82
83const TestMainStaticDtorClass* TestMainStaticDtorClass::expected_this = nullptr;
84
85static void atexit_func5() {
86  fprintf(stderr, "5");
87}
88
89static void atexit_func4() {
90  fprintf(stderr, "4");
91}
92
93static void atexit_func3() {
94  fprintf(stderr, "3");
95  atexit(atexit_func4);
96}
97
98static void atexit_func2() {
99  fprintf(stderr, "2");
100}
101
102static void atexit_func1() {
103  fprintf(stderr, "1");
104}
105
106static void atexit_main() {
107  // This should result in "123456" output to stderr
108  static TestMainStaticDtorClass static_obj;
109  atexit(atexit_func5);
110  atexit(atexit_func3);
111  atexit(atexit_func2);
112  atexit(atexit_func1);
113  exit(0);
114}
115
116TEST(atexit, exit) {
117  ASSERT_EXIT(atexit_main(), testing::ExitedWithCode(0), "123456");
118}
119
120