1 /*- 2 * Copyright (c) 2016 Mahdi Mokhtari <mokhi64@gmail.com> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <dlfcn.h> 28 #include <atf-c++.hpp> 29 #include <cstdio> 30 #include <cstdlib> 31 #include <thread> 32 33 static FILE *output = NULL; 34 35 struct Foo { 36 Foo() { ATF_REQUIRE(fprintf(output, "Created\n") > 0); } 37 ~Foo() { ATF_REQUIRE(fprintf(output, "Destroyed\n") > 0); } 38 void use() { ATF_REQUIRE(fprintf(output, "Used\n") > 0); } 39 }; 40 41 struct Bar { 42 Bar() {} 43 ~Bar() { 44 thread_local static Foo foo; 45 ATF_REQUIRE(fprintf(output, "DIED\n") > 0); 46 } 47 void use() {} 48 }; 49 50 extern "C" int __cxa_thread_atexit(void (*)(void *), void *, void *); 51 52 static void 53 again(void *arg) 54 { 55 56 __cxa_thread_atexit(again, arg, &output); 57 } 58 59 struct Baz { 60 Baz() {} 61 ~Baz() { 62 again(NULL); 63 } 64 void use() {} 65 }; 66 67 static thread_local Foo f; 68 static thread_local Foo g; 69 static thread_local Bar h; 70 static thread_local Baz e; 71 72 /* 73 * This test must be linked to libpthread. 74 */ 75 ATF_TEST_CASE_WITHOUT_HEAD(cxx__thr); 76 ATF_TEST_CASE_BODY(cxx__thr) 77 { 78 void *libthr_handle; 79 80 /* Avoid coredump during f construction. */ 81 output = stderr; 82 83 libthr_handle = dlopen("libthr.so.3", RTLD_LAZY | RTLD_GLOBAL | 84 RTLD_NOLOAD); 85 ATF_REQUIRE(libthr_handle != NULL); 86 dlclose(libthr_handle); 87 } 88 89 /* 90 * In this test f.use() will test cxa_thread_atexit() in non-threaded mode. 91 * After f.use() main will be threaded and we'll have one additional thread 92 * with its own TLS data. 93 */ 94 ATF_TEST_CASE_WITHOUT_HEAD(cxx__thread_local_before); 95 ATF_TEST_CASE_BODY(cxx__thread_local_before) 96 { 97 static const char out_log[] = "Created\nCreated\nUsed\nCreated\n" 98 "Created\nUsed\nCreated\nDIED\nDestroyed\nDestroyed\nDestroyed\n"; 99 100 ATF_REQUIRE((output = fopen("test_before.txt", "w")) != NULL); 101 102 f.use(); 103 std::thread t([]() { f.use(); }); 104 t.join(); 105 106 fflush(output); 107 108 ATF_REQUIRE(atf::utils::compare_file("test_before.txt", out_log)); 109 } 110 111 /* 112 * In this test, f.use() will test __cxa_thread_atexit() 113 * in threaded mode (but still in main-threaed). 114 */ 115 ATF_TEST_CASE_WITHOUT_HEAD(cxx__thread_local_after); 116 ATF_TEST_CASE_BODY(cxx__thread_local_after) 117 { 118 static const char out_log[] = "Created\nCreated\nUsed\nCreated\n" 119 "DIED\nDestroyed\nDestroyed\nDestroyed\nCreated\nCreated\nUsed\n"; 120 121 ATF_REQUIRE((output = fopen("test_after.txt", "w")) != NULL); 122 123 std::thread t([]() { g.use(); }); 124 t.join(); 125 sleep(1); 126 g.use(); 127 128 fflush(output); 129 130 ATF_REQUIRE(atf::utils::compare_file("test_after.txt", out_log)); 131 } 132 133 /* 134 * In this test, we register a new dtor while dtors are being run 135 * in __cxa_thread_atexit(). 136 */ 137 ATF_TEST_CASE_WITHOUT_HEAD(cxx__thread_local_add_while_calling_dtors); 138 ATF_TEST_CASE_BODY(cxx__thread_local_add_while_calling_dtors) 139 { 140 static const char out_log[] = "Created\nCreated\nCreated\nDIED\n" 141 "Destroyed\nDestroyed\nDestroyed\n"; 142 143 ATF_REQUIRE((output = fopen("test_add_meanwhile.txt", "w")) != NULL); 144 145 std::thread t([]() { h.use(); }); 146 t.join(); 147 sleep(1); 148 149 fflush(output); 150 151 ATF_REQUIRE(atf::utils::compare_file("test_add_meanwhile.txt", out_log)); 152 } 153 154 ATF_TEST_CASE_WITHOUT_HEAD(cxx__thread_inf_dtors); 155 ATF_TEST_CASE_BODY(cxx__thread_inf_dtors) 156 { 157 158 /* 159 * Only added to make isolated run of this test not 160 * coredumping. Construction of Foo objects require filled 161 * output. 162 */ 163 output = stderr; 164 165 std::thread t([]() { e.use(); }); 166 t.join(); 167 } 168 169 ATF_INIT_TEST_CASES(tcs) 170 { 171 172 ATF_ADD_TEST_CASE(tcs, cxx__thr); 173 ATF_ADD_TEST_CASE(tcs, cxx__thread_local_before); 174 ATF_ADD_TEST_CASE(tcs, cxx__thread_local_after); 175 ATF_ADD_TEST_CASE(tcs, cxx__thread_local_add_while_calling_dtors); 176 ATF_ADD_TEST_CASE(tcs, cxx__thread_inf_dtors); 177 } 178