pthread_test.cpp revision 718a5b5495ae7726aabd2f8a748da9f391d12b98
1/* 2 * Copyright (C) 2012 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#include <gtest/gtest.h> 18 19#include <errno.h> 20#include <inttypes.h> 21#include <limits.h> 22#include <pthread.h> 23#include <sys/mman.h> 24#include <unistd.h> 25 26TEST(pthread, pthread_key_create) { 27 pthread_key_t key; 28 ASSERT_EQ(0, pthread_key_create(&key, NULL)); 29 ASSERT_EQ(0, pthread_key_delete(key)); 30 // Can't delete a key that's already been deleted. 31 ASSERT_EQ(EINVAL, pthread_key_delete(key)); 32} 33 34#if !defined(__GLIBC__) // glibc uses keys internally that its sysconf value doesn't account for. 35TEST(pthread, pthread_key_create_lots) { 36 // POSIX says PTHREAD_KEYS_MAX should be at least 128. 37 ASSERT_GE(PTHREAD_KEYS_MAX, 128); 38 39 int sysconf_max = sysconf(_SC_THREAD_KEYS_MAX); 40 41 // sysconf shouldn't return a smaller value. 42 ASSERT_GE(sysconf_max, PTHREAD_KEYS_MAX); 43 44 // We can allocate _SC_THREAD_KEYS_MAX keys. 45 sysconf_max -= 2; // (Except that gtest takes two for itself.) 46 std::vector<pthread_key_t> keys; 47 for (int i = 0; i < sysconf_max; ++i) { 48 pthread_key_t key; 49 // If this fails, it's likely that GLOBAL_INIT_THREAD_LOCAL_BUFFER_COUNT is wrong. 50 ASSERT_EQ(0, pthread_key_create(&key, NULL)) << i << " of " << sysconf_max; 51 keys.push_back(key); 52 } 53 54 // ...and that really is the maximum. 55 pthread_key_t key; 56 ASSERT_EQ(EAGAIN, pthread_key_create(&key, NULL)); 57 58 // (Don't leak all those keys!) 59 for (size_t i = 0; i < keys.size(); ++i) { 60 ASSERT_EQ(0, pthread_key_delete(keys[i])); 61 } 62} 63#endif 64 65static void* IdFn(void* arg) { 66 return arg; 67} 68 69static void* SleepFn(void* arg) { 70 sleep(reinterpret_cast<uintptr_t>(arg)); 71 return NULL; 72} 73 74static void* SpinFn(void* arg) { 75 volatile bool* b = reinterpret_cast<volatile bool*>(arg); 76 while (!*b) { 77 } 78 return NULL; 79} 80 81static void* JoinFn(void* arg) { 82 return reinterpret_cast<void*>(pthread_join(reinterpret_cast<pthread_t>(arg), NULL)); 83} 84 85static void AssertDetached(pthread_t t, bool is_detached) { 86 pthread_attr_t attr; 87 ASSERT_EQ(0, pthread_getattr_np(t, &attr)); 88 int detach_state; 89 ASSERT_EQ(0, pthread_attr_getdetachstate(&attr, &detach_state)); 90 pthread_attr_destroy(&attr); 91 ASSERT_EQ(is_detached, (detach_state == PTHREAD_CREATE_DETACHED)); 92} 93 94static void MakeDeadThread(pthread_t& t) { 95 ASSERT_EQ(0, pthread_create(&t, NULL, IdFn, NULL)); 96 void* result; 97 ASSERT_EQ(0, pthread_join(t, &result)); 98} 99 100TEST(pthread, pthread_create) { 101 void* expected_result = reinterpret_cast<void*>(123); 102 // Can we create a thread? 103 pthread_t t; 104 ASSERT_EQ(0, pthread_create(&t, NULL, IdFn, expected_result)); 105 // If we join, do we get the expected value back? 106 void* result; 107 ASSERT_EQ(0, pthread_join(t, &result)); 108 ASSERT_EQ(expected_result, result); 109} 110 111TEST(pthread, pthread_create_EAGAIN) { 112 pthread_attr_t attributes; 113 ASSERT_EQ(0, pthread_attr_init(&attributes)); 114 ASSERT_EQ(0, pthread_attr_setstacksize(&attributes, static_cast<size_t>(-1) & ~(getpagesize() - 1))); 115 116 pthread_t t; 117 ASSERT_EQ(EAGAIN, pthread_create(&t, &attributes, IdFn, NULL)); 118} 119 120TEST(pthread, pthread_no_join_after_detach) { 121 pthread_t t1; 122 ASSERT_EQ(0, pthread_create(&t1, NULL, SleepFn, reinterpret_cast<void*>(5))); 123 124 // After a pthread_detach... 125 ASSERT_EQ(0, pthread_detach(t1)); 126 AssertDetached(t1, true); 127 128 // ...pthread_join should fail. 129 void* result; 130 ASSERT_EQ(EINVAL, pthread_join(t1, &result)); 131} 132 133TEST(pthread, pthread_no_op_detach_after_join) { 134 bool done = false; 135 136 pthread_t t1; 137 ASSERT_EQ(0, pthread_create(&t1, NULL, SpinFn, &done)); 138 139 // If thread 2 is already waiting to join thread 1... 140 pthread_t t2; 141 ASSERT_EQ(0, pthread_create(&t2, NULL, JoinFn, reinterpret_cast<void*>(t1))); 142 143 sleep(1); // (Give t2 a chance to call pthread_join.) 144 145 // ...a call to pthread_detach on thread 1 will "succeed" (silently fail)... 146 ASSERT_EQ(0, pthread_detach(t1)); 147 AssertDetached(t1, false); 148 149 done = true; 150 151 // ...but t2's join on t1 still goes ahead (which we can tell because our join on t2 finishes). 152 void* join_result; 153 ASSERT_EQ(0, pthread_join(t2, &join_result)); 154 ASSERT_EQ(0U, reinterpret_cast<uintptr_t>(join_result)); 155} 156 157TEST(pthread, pthread_join_self) { 158 void* result; 159 ASSERT_EQ(EDEADLK, pthread_join(pthread_self(), &result)); 160} 161 162struct TestBug37410 { 163 pthread_t main_thread; 164 pthread_mutex_t mutex; 165 166 static void main() { 167 TestBug37410 data; 168 data.main_thread = pthread_self(); 169 ASSERT_EQ(0, pthread_mutex_init(&data.mutex, NULL)); 170 ASSERT_EQ(0, pthread_mutex_lock(&data.mutex)); 171 172 pthread_t t; 173 ASSERT_EQ(0, pthread_create(&t, NULL, TestBug37410::thread_fn, reinterpret_cast<void*>(&data))); 174 175 // Wait for the thread to be running... 176 ASSERT_EQ(0, pthread_mutex_lock(&data.mutex)); 177 ASSERT_EQ(0, pthread_mutex_unlock(&data.mutex)); 178 179 // ...and exit. 180 pthread_exit(NULL); 181 } 182 183 private: 184 static void* thread_fn(void* arg) { 185 TestBug37410* data = reinterpret_cast<TestBug37410*>(arg); 186 187 // Let the main thread know we're running. 188 pthread_mutex_unlock(&data->mutex); 189 190 // And wait for the main thread to exit. 191 pthread_join(data->main_thread, NULL); 192 193 return NULL; 194 } 195}; 196 197// Even though this isn't really a death test, we have to say "DeathTest" here so gtest knows to 198// run this test (which exits normally) in its own process. 199TEST(pthread_DeathTest, pthread_bug_37410) { 200 // http://code.google.com/p/android/issues/detail?id=37410 201 ::testing::FLAGS_gtest_death_test_style = "threadsafe"; 202 ASSERT_EXIT(TestBug37410::main(), ::testing::ExitedWithCode(0), ""); 203} 204 205static void* SignalHandlerFn(void* arg) { 206 sigset_t wait_set; 207 sigfillset(&wait_set); 208 return reinterpret_cast<void*>(sigwait(&wait_set, reinterpret_cast<int*>(arg))); 209} 210 211TEST(pthread, pthread_sigmask) { 212 // Check that SIGUSR1 isn't blocked. 213 sigset_t original_set; 214 sigemptyset(&original_set); 215 ASSERT_EQ(0, pthread_sigmask(SIG_BLOCK, NULL, &original_set)); 216 ASSERT_FALSE(sigismember(&original_set, SIGUSR1)); 217 218 // Block SIGUSR1. 219 sigset_t set; 220 sigemptyset(&set); 221 sigaddset(&set, SIGUSR1); 222 ASSERT_EQ(0, pthread_sigmask(SIG_BLOCK, &set, NULL)); 223 224 // Check that SIGUSR1 is blocked. 225 sigset_t final_set; 226 sigemptyset(&final_set); 227 ASSERT_EQ(0, pthread_sigmask(SIG_BLOCK, NULL, &final_set)); 228 ASSERT_TRUE(sigismember(&final_set, SIGUSR1)); 229 // ...and that sigprocmask agrees with pthread_sigmask. 230 sigemptyset(&final_set); 231 ASSERT_EQ(0, sigprocmask(SIG_BLOCK, NULL, &final_set)); 232 ASSERT_TRUE(sigismember(&final_set, SIGUSR1)); 233 234 // Spawn a thread that calls sigwait and tells us what it received. 235 pthread_t signal_thread; 236 int received_signal = -1; 237 ASSERT_EQ(0, pthread_create(&signal_thread, NULL, SignalHandlerFn, &received_signal)); 238 239 // Send that thread SIGUSR1. 240 pthread_kill(signal_thread, SIGUSR1); 241 242 // See what it got. 243 void* join_result; 244 ASSERT_EQ(0, pthread_join(signal_thread, &join_result)); 245 ASSERT_EQ(SIGUSR1, received_signal); 246 ASSERT_EQ(0U, reinterpret_cast<uintptr_t>(join_result)); 247 248 // Restore the original signal mask. 249 ASSERT_EQ(0, pthread_sigmask(SIG_SETMASK, &original_set, NULL)); 250} 251 252#if __BIONIC__ 253extern "C" pid_t __bionic_clone(int flags, void* child_stack, pid_t* parent_tid, void* tls, pid_t* child_tid, int (*fn)(void*), void* arg); 254TEST(pthread, __bionic_clone) { 255 // Check that our hand-written clone assembler sets errno correctly on failure. 256 uintptr_t fake_child_stack[16]; 257 errno = 0; 258 ASSERT_EQ(-1, __bionic_clone(CLONE_THREAD, &fake_child_stack[16], NULL, NULL, NULL, NULL, NULL)); 259 ASSERT_EQ(EINVAL, errno); 260} 261#endif 262 263#if __BIONIC__ // Not all build servers have a new enough glibc? TODO: remove when they're on gprecise. 264TEST(pthread, pthread_setname_np__too_long) { 265 ASSERT_EQ(ERANGE, pthread_setname_np(pthread_self(), "this name is far too long for linux")); 266} 267#endif 268 269#if __BIONIC__ // Not all build servers have a new enough glibc? TODO: remove when they're on gprecise. 270TEST(pthread, pthread_setname_np__self) { 271 ASSERT_EQ(0, pthread_setname_np(pthread_self(), "short 1")); 272} 273#endif 274 275#if __BIONIC__ // Not all build servers have a new enough glibc? TODO: remove when they're on gprecise. 276TEST(pthread, pthread_setname_np__other) { 277 // Emulator kernels don't currently support setting the name of other threads. 278 char* filename = NULL; 279 asprintf(&filename, "/proc/self/task/%d/comm", gettid()); 280 struct stat sb; 281 bool has_comm = (stat(filename, &sb) != -1); 282 free(filename); 283 284 if (has_comm) { 285 pthread_t t1; 286 ASSERT_EQ(0, pthread_create(&t1, NULL, SleepFn, reinterpret_cast<void*>(5))); 287 ASSERT_EQ(0, pthread_setname_np(t1, "short 2")); 288 } else { 289 fprintf(stderr, "skipping test: this kernel doesn't have /proc/self/task/tid/comm files!\n"); 290 } 291} 292#endif 293 294#if __BIONIC__ // Not all build servers have a new enough glibc? TODO: remove when they're on gprecise. 295TEST(pthread, pthread_setname_np__no_such_thread) { 296 pthread_t dead_thread; 297 MakeDeadThread(dead_thread); 298 299 // Call pthread_setname_np after thread has already exited. 300 ASSERT_EQ(ESRCH, pthread_setname_np(dead_thread, "short 3")); 301} 302#endif 303 304TEST(pthread, pthread_kill__0) { 305 // Signal 0 just tests that the thread exists, so it's safe to call on ourselves. 306 ASSERT_EQ(0, pthread_kill(pthread_self(), 0)); 307} 308 309TEST(pthread, pthread_kill__invalid_signal) { 310 ASSERT_EQ(EINVAL, pthread_kill(pthread_self(), -1)); 311} 312 313static void pthread_kill__in_signal_handler_helper(int signal_number) { 314 static int count = 0; 315 ASSERT_EQ(SIGALRM, signal_number); 316 if (++count == 1) { 317 // Can we call pthread_kill from a signal handler? 318 ASSERT_EQ(0, pthread_kill(pthread_self(), SIGALRM)); 319 } 320} 321 322TEST(pthread, pthread_kill__in_signal_handler) { 323 struct sigaction action; 324 struct sigaction original_action; 325 sigemptyset(&action.sa_mask); 326 action.sa_flags = 0; 327 action.sa_handler = pthread_kill__in_signal_handler_helper; 328 ASSERT_EQ(0, sigaction(SIGALRM, &action, &original_action)); 329 ASSERT_EQ(0, pthread_kill(pthread_self(), SIGALRM)); 330 ASSERT_EQ(0, sigaction(SIGALRM, &original_action, NULL)); 331} 332 333TEST(pthread, pthread_detach__no_such_thread) { 334 pthread_t dead_thread; 335 MakeDeadThread(dead_thread); 336 337 ASSERT_EQ(ESRCH, pthread_detach(dead_thread)); 338} 339 340TEST(pthread, pthread_getcpuclockid__clock_gettime) { 341 pthread_t t; 342 ASSERT_EQ(0, pthread_create(&t, NULL, SleepFn, reinterpret_cast<void*>(5))); 343 344 clockid_t c; 345 ASSERT_EQ(0, pthread_getcpuclockid(t, &c)); 346 timespec ts; 347 ASSERT_EQ(0, clock_gettime(c, &ts)); 348} 349 350TEST(pthread, pthread_getcpuclockid__no_such_thread) { 351 pthread_t dead_thread; 352 MakeDeadThread(dead_thread); 353 354 clockid_t c; 355 ASSERT_EQ(ESRCH, pthread_getcpuclockid(dead_thread, &c)); 356} 357 358TEST(pthread, pthread_getschedparam__no_such_thread) { 359 pthread_t dead_thread; 360 MakeDeadThread(dead_thread); 361 362 int policy; 363 sched_param param; 364 ASSERT_EQ(ESRCH, pthread_getschedparam(dead_thread, &policy, ¶m)); 365} 366 367TEST(pthread, pthread_setschedparam__no_such_thread) { 368 pthread_t dead_thread; 369 MakeDeadThread(dead_thread); 370 371 int policy = 0; 372 sched_param param; 373 ASSERT_EQ(ESRCH, pthread_setschedparam(dead_thread, policy, ¶m)); 374} 375 376TEST(pthread, pthread_join__no_such_thread) { 377 pthread_t dead_thread; 378 MakeDeadThread(dead_thread); 379 380 void* result; 381 ASSERT_EQ(ESRCH, pthread_join(dead_thread, &result)); 382} 383 384TEST(pthread, pthread_kill__no_such_thread) { 385 pthread_t dead_thread; 386 MakeDeadThread(dead_thread); 387 388 ASSERT_EQ(ESRCH, pthread_kill(dead_thread, 0)); 389} 390 391TEST(pthread, pthread_join__multijoin) { 392 bool done = false; 393 394 pthread_t t1; 395 ASSERT_EQ(0, pthread_create(&t1, NULL, SpinFn, &done)); 396 397 pthread_t t2; 398 ASSERT_EQ(0, pthread_create(&t2, NULL, JoinFn, reinterpret_cast<void*>(t1))); 399 400 sleep(1); // (Give t2 a chance to call pthread_join.) 401 402 // Multiple joins to the same thread should fail. 403 ASSERT_EQ(EINVAL, pthread_join(t1, NULL)); 404 405 done = true; 406 407 // ...but t2's join on t1 still goes ahead (which we can tell because our join on t2 finishes). 408 void* join_result; 409 ASSERT_EQ(0, pthread_join(t2, &join_result)); 410 ASSERT_EQ(0U, reinterpret_cast<uintptr_t>(join_result)); 411} 412 413TEST(pthread, pthread_join__race) { 414 // http://b/11693195 --- pthread_join could return before the thread had actually exited. 415 // If the joiner unmapped the thread's stack, that could lead to SIGSEGV in the thread. 416 for (size_t i = 0; i < 1024; ++i) { 417 size_t stack_size = 64*1024; 418 void* stack = mmap(NULL, stack_size, PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, -1, 0); 419 420 pthread_attr_t a; 421 pthread_attr_init(&a); 422 pthread_attr_setstack(&a, stack, stack_size); 423 424 pthread_t t; 425 ASSERT_EQ(0, pthread_create(&t, &a, IdFn, NULL)); 426 ASSERT_EQ(0, pthread_join(t, NULL)); 427 ASSERT_EQ(0, munmap(stack, stack_size)); 428 } 429} 430 431static void* GetActualGuardSizeFn(void* arg) { 432 pthread_attr_t attributes; 433 pthread_getattr_np(pthread_self(), &attributes); 434 pthread_attr_getguardsize(&attributes, reinterpret_cast<size_t*>(arg)); 435 return NULL; 436} 437 438static size_t GetActualGuardSize(const pthread_attr_t& attributes) { 439 size_t result; 440 pthread_t t; 441 pthread_create(&t, &attributes, GetActualGuardSizeFn, &result); 442 void* join_result; 443 pthread_join(t, &join_result); 444 return result; 445} 446 447static void* GetActualStackSizeFn(void* arg) { 448 pthread_attr_t attributes; 449 pthread_getattr_np(pthread_self(), &attributes); 450 pthread_attr_getstacksize(&attributes, reinterpret_cast<size_t*>(arg)); 451 return NULL; 452} 453 454static size_t GetActualStackSize(const pthread_attr_t& attributes) { 455 size_t result; 456 pthread_t t; 457 pthread_create(&t, &attributes, GetActualStackSizeFn, &result); 458 void* join_result; 459 pthread_join(t, &join_result); 460 return result; 461} 462 463TEST(pthread, pthread_attr_setguardsize) { 464 pthread_attr_t attributes; 465 ASSERT_EQ(0, pthread_attr_init(&attributes)); 466 467 // Get the default guard size. 468 size_t default_guard_size; 469 ASSERT_EQ(0, pthread_attr_getguardsize(&attributes, &default_guard_size)); 470 471 // No such thing as too small: will be rounded up to one page by pthread_create. 472 ASSERT_EQ(0, pthread_attr_setguardsize(&attributes, 128)); 473 size_t guard_size; 474 ASSERT_EQ(0, pthread_attr_getguardsize(&attributes, &guard_size)); 475 ASSERT_EQ(128U, guard_size); 476 ASSERT_EQ(4096U, GetActualGuardSize(attributes)); 477 478 // Large enough and a multiple of the page size. 479 ASSERT_EQ(0, pthread_attr_setguardsize(&attributes, 32*1024)); 480 ASSERT_EQ(0, pthread_attr_getguardsize(&attributes, &guard_size)); 481 ASSERT_EQ(32*1024U, guard_size); 482 483 // Large enough but not a multiple of the page size; will be rounded up by pthread_create. 484 ASSERT_EQ(0, pthread_attr_setguardsize(&attributes, 32*1024 + 1)); 485 ASSERT_EQ(0, pthread_attr_getguardsize(&attributes, &guard_size)); 486 ASSERT_EQ(32*1024U + 1, guard_size); 487} 488 489TEST(pthread, pthread_attr_setstacksize) { 490 pthread_attr_t attributes; 491 ASSERT_EQ(0, pthread_attr_init(&attributes)); 492 493 // Get the default stack size. 494 size_t default_stack_size; 495 ASSERT_EQ(0, pthread_attr_getstacksize(&attributes, &default_stack_size)); 496 497 // Too small. 498 ASSERT_EQ(EINVAL, pthread_attr_setstacksize(&attributes, 128)); 499 size_t stack_size; 500 ASSERT_EQ(0, pthread_attr_getstacksize(&attributes, &stack_size)); 501 ASSERT_EQ(default_stack_size, stack_size); 502 ASSERT_GE(GetActualStackSize(attributes), default_stack_size); 503 504 // Large enough and a multiple of the page size. 505 ASSERT_EQ(0, pthread_attr_setstacksize(&attributes, 32*1024)); 506 ASSERT_EQ(0, pthread_attr_getstacksize(&attributes, &stack_size)); 507 ASSERT_EQ(32*1024U, stack_size); 508 ASSERT_EQ(GetActualStackSize(attributes), 32*1024U); 509 510 // Large enough but not a multiple of the page size; will be rounded up by pthread_create. 511 ASSERT_EQ(0, pthread_attr_setstacksize(&attributes, 32*1024 + 1)); 512 ASSERT_EQ(0, pthread_attr_getstacksize(&attributes, &stack_size)); 513 ASSERT_EQ(32*1024U + 1, stack_size); 514#if __BIONIC__ 515 // Bionic rounds up, which is what POSIX allows. 516 ASSERT_EQ(GetActualStackSize(attributes), (32 + 4)*1024U); 517#else 518 // glibc rounds down, in violation of POSIX. They document this in their BUGS section. 519 ASSERT_EQ(GetActualStackSize(attributes), 32*1024U); 520#endif 521} 522 523TEST(pthread, pthread_rwlock_smoke) { 524 pthread_rwlock_t l; 525 ASSERT_EQ(0, pthread_rwlock_init(&l, NULL)); 526 527 ASSERT_EQ(0, pthread_rwlock_rdlock(&l)); 528 ASSERT_EQ(0, pthread_rwlock_unlock(&l)); 529 530 ASSERT_EQ(0, pthread_rwlock_wrlock(&l)); 531 ASSERT_EQ(0, pthread_rwlock_unlock(&l)); 532 533 ASSERT_EQ(0, pthread_rwlock_destroy(&l)); 534} 535 536static int gOnceFnCallCount = 0; 537static void OnceFn() { 538 ++gOnceFnCallCount; 539} 540 541TEST(pthread, pthread_once_smoke) { 542 pthread_once_t once_control = PTHREAD_ONCE_INIT; 543 ASSERT_EQ(0, pthread_once(&once_control, OnceFn)); 544 ASSERT_EQ(0, pthread_once(&once_control, OnceFn)); 545 ASSERT_EQ(1, gOnceFnCallCount); 546} 547 548static int gAtForkPrepareCalls = 0; 549static void AtForkPrepare1() { gAtForkPrepareCalls = (gAtForkPrepareCalls << 4) | 1; } 550static void AtForkPrepare2() { gAtForkPrepareCalls = (gAtForkPrepareCalls << 4) | 2; } 551static int gAtForkParentCalls = 0; 552static void AtForkParent1() { gAtForkParentCalls = (gAtForkParentCalls << 4) | 1; } 553static void AtForkParent2() { gAtForkParentCalls = (gAtForkParentCalls << 4) | 2; } 554static int gAtForkChildCalls = 0; 555static void AtForkChild1() { gAtForkChildCalls = (gAtForkChildCalls << 4) | 1; } 556static void AtForkChild2() { gAtForkChildCalls = (gAtForkChildCalls << 4) | 2; } 557 558TEST(pthread, pthread_atfork) { 559 ASSERT_EQ(0, pthread_atfork(AtForkPrepare1, AtForkParent1, AtForkChild1)); 560 ASSERT_EQ(0, pthread_atfork(AtForkPrepare2, AtForkParent2, AtForkChild2)); 561 562 int pid = fork(); 563 ASSERT_NE(-1, pid) << strerror(errno); 564 565 // Child and parent calls are made in the order they were registered. 566 if (pid == 0) { 567 ASSERT_EQ(0x12, gAtForkChildCalls); 568 _exit(0); 569 } 570 ASSERT_EQ(0x12, gAtForkParentCalls); 571 572 // Prepare calls are made in the reverse order. 573 ASSERT_EQ(0x21, gAtForkPrepareCalls); 574} 575 576TEST(pthread, pthread_attr_getscope) { 577 pthread_attr_t attr; 578 ASSERT_EQ(0, pthread_attr_init(&attr)); 579 580 int scope; 581 ASSERT_EQ(0, pthread_attr_getscope(&attr, &scope)); 582 ASSERT_EQ(PTHREAD_SCOPE_SYSTEM, scope); 583} 584