pthread_test.cpp revision 04620a3cd7bdea0d1b421c8772ba3f06839bbe9c
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 <malloc.h> 23#include <pthread.h> 24#include <signal.h> 25#include <sys/mman.h> 26#include <time.h> 27#include <unistd.h> 28 29#include "ScopedSignalHandler.h" 30 31TEST(pthread, pthread_key_create) { 32 pthread_key_t key; 33 ASSERT_EQ(0, pthread_key_create(&key, NULL)); 34 ASSERT_EQ(0, pthread_key_delete(key)); 35 // Can't delete a key that's already been deleted. 36 ASSERT_EQ(EINVAL, pthread_key_delete(key)); 37} 38 39TEST(pthread, pthread_key_create_lots) { 40#if defined(__BIONIC__) // glibc uses keys internally that its sysconf value doesn't account for. 41 // POSIX says PTHREAD_KEYS_MAX should be at least 128. 42 ASSERT_GE(PTHREAD_KEYS_MAX, 128); 43 44 int sysconf_max = sysconf(_SC_THREAD_KEYS_MAX); 45 46 // sysconf shouldn't return a smaller value. 47 ASSERT_GE(sysconf_max, PTHREAD_KEYS_MAX); 48 49 // We can allocate _SC_THREAD_KEYS_MAX keys. 50 sysconf_max -= 2; // (Except that gtest takes two for itself.) 51 std::vector<pthread_key_t> keys; 52 for (int i = 0; i < sysconf_max; ++i) { 53 pthread_key_t key; 54 // If this fails, it's likely that GLOBAL_INIT_THREAD_LOCAL_BUFFER_COUNT is wrong. 55 ASSERT_EQ(0, pthread_key_create(&key, NULL)) << i << " of " << sysconf_max; 56 keys.push_back(key); 57 } 58 59 // ...and that really is the maximum. 60 pthread_key_t key; 61 ASSERT_EQ(EAGAIN, pthread_key_create(&key, NULL)); 62 63 // (Don't leak all those keys!) 64 for (size_t i = 0; i < keys.size(); ++i) { 65 ASSERT_EQ(0, pthread_key_delete(keys[i])); 66 } 67#else // __BIONIC__ 68 GTEST_LOG_(INFO) << "This test does nothing.\n"; 69#endif // __BIONIC__ 70} 71 72static void* IdFn(void* arg) { 73 return arg; 74} 75 76static void* SleepFn(void* arg) { 77 sleep(reinterpret_cast<uintptr_t>(arg)); 78 return NULL; 79} 80 81static void* SpinFn(void* arg) { 82 volatile bool* b = reinterpret_cast<volatile bool*>(arg); 83 while (!*b) { 84 } 85 return NULL; 86} 87 88static void* JoinFn(void* arg) { 89 return reinterpret_cast<void*>(pthread_join(reinterpret_cast<pthread_t>(arg), NULL)); 90} 91 92static void AssertDetached(pthread_t t, bool is_detached) { 93 pthread_attr_t attr; 94 ASSERT_EQ(0, pthread_getattr_np(t, &attr)); 95 int detach_state; 96 ASSERT_EQ(0, pthread_attr_getdetachstate(&attr, &detach_state)); 97 pthread_attr_destroy(&attr); 98 ASSERT_EQ(is_detached, (detach_state == PTHREAD_CREATE_DETACHED)); 99} 100 101static void MakeDeadThread(pthread_t& t) { 102 ASSERT_EQ(0, pthread_create(&t, NULL, IdFn, NULL)); 103 void* result; 104 ASSERT_EQ(0, pthread_join(t, &result)); 105} 106 107TEST(pthread, pthread_create) { 108 void* expected_result = reinterpret_cast<void*>(123); 109 // Can we create a thread? 110 pthread_t t; 111 ASSERT_EQ(0, pthread_create(&t, NULL, IdFn, expected_result)); 112 // If we join, do we get the expected value back? 113 void* result; 114 ASSERT_EQ(0, pthread_join(t, &result)); 115 ASSERT_EQ(expected_result, result); 116} 117 118TEST(pthread, pthread_create_EAGAIN) { 119 pthread_attr_t attributes; 120 ASSERT_EQ(0, pthread_attr_init(&attributes)); 121 ASSERT_EQ(0, pthread_attr_setstacksize(&attributes, static_cast<size_t>(-1) & ~(getpagesize() - 1))); 122 123 pthread_t t; 124 ASSERT_EQ(EAGAIN, pthread_create(&t, &attributes, IdFn, NULL)); 125} 126 127TEST(pthread, pthread_no_join_after_detach) { 128 pthread_t t1; 129 ASSERT_EQ(0, pthread_create(&t1, NULL, SleepFn, reinterpret_cast<void*>(5))); 130 131 // After a pthread_detach... 132 ASSERT_EQ(0, pthread_detach(t1)); 133 AssertDetached(t1, true); 134 135 // ...pthread_join should fail. 136 void* result; 137 ASSERT_EQ(EINVAL, pthread_join(t1, &result)); 138} 139 140TEST(pthread, pthread_no_op_detach_after_join) { 141 bool done = false; 142 143 pthread_t t1; 144 ASSERT_EQ(0, pthread_create(&t1, NULL, SpinFn, &done)); 145 146 // If thread 2 is already waiting to join thread 1... 147 pthread_t t2; 148 ASSERT_EQ(0, pthread_create(&t2, NULL, JoinFn, reinterpret_cast<void*>(t1))); 149 150 sleep(1); // (Give t2 a chance to call pthread_join.) 151 152 // ...a call to pthread_detach on thread 1 will "succeed" (silently fail)... 153 ASSERT_EQ(0, pthread_detach(t1)); 154 AssertDetached(t1, false); 155 156 done = true; 157 158 // ...but t2's join on t1 still goes ahead (which we can tell because our join on t2 finishes). 159 void* join_result; 160 ASSERT_EQ(0, pthread_join(t2, &join_result)); 161 ASSERT_EQ(0U, reinterpret_cast<uintptr_t>(join_result)); 162} 163 164TEST(pthread, pthread_join_self) { 165 void* result; 166 ASSERT_EQ(EDEADLK, pthread_join(pthread_self(), &result)); 167} 168 169struct TestBug37410 { 170 pthread_t main_thread; 171 pthread_mutex_t mutex; 172 173 static void main() { 174 TestBug37410 data; 175 data.main_thread = pthread_self(); 176 ASSERT_EQ(0, pthread_mutex_init(&data.mutex, NULL)); 177 ASSERT_EQ(0, pthread_mutex_lock(&data.mutex)); 178 179 pthread_t t; 180 ASSERT_EQ(0, pthread_create(&t, NULL, TestBug37410::thread_fn, reinterpret_cast<void*>(&data))); 181 182 // Wait for the thread to be running... 183 ASSERT_EQ(0, pthread_mutex_lock(&data.mutex)); 184 ASSERT_EQ(0, pthread_mutex_unlock(&data.mutex)); 185 186 // ...and exit. 187 pthread_exit(NULL); 188 } 189 190 private: 191 static void* thread_fn(void* arg) { 192 TestBug37410* data = reinterpret_cast<TestBug37410*>(arg); 193 194 // Let the main thread know we're running. 195 pthread_mutex_unlock(&data->mutex); 196 197 // And wait for the main thread to exit. 198 pthread_join(data->main_thread, NULL); 199 200 return NULL; 201 } 202}; 203 204// Even though this isn't really a death test, we have to say "DeathTest" here so gtest knows to 205// run this test (which exits normally) in its own process. 206TEST(pthread_DeathTest, pthread_bug_37410) { 207 // http://code.google.com/p/android/issues/detail?id=37410 208 ::testing::FLAGS_gtest_death_test_style = "threadsafe"; 209 ASSERT_EXIT(TestBug37410::main(), ::testing::ExitedWithCode(0), ""); 210} 211 212static void* SignalHandlerFn(void* arg) { 213 sigset_t wait_set; 214 sigfillset(&wait_set); 215 return reinterpret_cast<void*>(sigwait(&wait_set, reinterpret_cast<int*>(arg))); 216} 217 218TEST(pthread, pthread_sigmask) { 219 // Check that SIGUSR1 isn't blocked. 220 sigset_t original_set; 221 sigemptyset(&original_set); 222 ASSERT_EQ(0, pthread_sigmask(SIG_BLOCK, NULL, &original_set)); 223 ASSERT_FALSE(sigismember(&original_set, SIGUSR1)); 224 225 // Block SIGUSR1. 226 sigset_t set; 227 sigemptyset(&set); 228 sigaddset(&set, SIGUSR1); 229 ASSERT_EQ(0, pthread_sigmask(SIG_BLOCK, &set, NULL)); 230 231 // Check that SIGUSR1 is blocked. 232 sigset_t final_set; 233 sigemptyset(&final_set); 234 ASSERT_EQ(0, pthread_sigmask(SIG_BLOCK, NULL, &final_set)); 235 ASSERT_TRUE(sigismember(&final_set, SIGUSR1)); 236 // ...and that sigprocmask agrees with pthread_sigmask. 237 sigemptyset(&final_set); 238 ASSERT_EQ(0, sigprocmask(SIG_BLOCK, NULL, &final_set)); 239 ASSERT_TRUE(sigismember(&final_set, SIGUSR1)); 240 241 // Spawn a thread that calls sigwait and tells us what it received. 242 pthread_t signal_thread; 243 int received_signal = -1; 244 ASSERT_EQ(0, pthread_create(&signal_thread, NULL, SignalHandlerFn, &received_signal)); 245 246 // Send that thread SIGUSR1. 247 pthread_kill(signal_thread, SIGUSR1); 248 249 // See what it got. 250 void* join_result; 251 ASSERT_EQ(0, pthread_join(signal_thread, &join_result)); 252 ASSERT_EQ(SIGUSR1, received_signal); 253 ASSERT_EQ(0U, reinterpret_cast<uintptr_t>(join_result)); 254 255 // Restore the original signal mask. 256 ASSERT_EQ(0, pthread_sigmask(SIG_SETMASK, &original_set, NULL)); 257} 258 259#if defined(__BIONIC__) 260extern "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); 261#endif // __BIONIC__ 262 263TEST(pthread, __bionic_clone) { 264#if defined(__BIONIC__) 265 // Check that our hand-written clone assembler sets errno correctly on failure. 266 uintptr_t fake_child_stack[16]; 267 errno = 0; 268 ASSERT_EQ(-1, __bionic_clone(CLONE_THREAD, &fake_child_stack[16], NULL, NULL, NULL, NULL, NULL)); 269 ASSERT_EQ(EINVAL, errno); 270#else // __BIONIC__ 271 GTEST_LOG_(INFO) << "This test does nothing.\n"; 272#endif // __BIONIC__ 273} 274 275TEST(pthread, pthread_setname_np__too_long) { 276#if defined(__BIONIC__) // Not all build servers have a new enough glibc? TODO: remove when they're on gprecise. 277 ASSERT_EQ(ERANGE, pthread_setname_np(pthread_self(), "this name is far too long for linux")); 278#else // __BIONIC__ 279 GTEST_LOG_(INFO) << "This test does nothing.\n"; 280#endif // __BIONIC__ 281} 282 283TEST(pthread, pthread_setname_np__self) { 284#if defined(__BIONIC__) // Not all build servers have a new enough glibc? TODO: remove when they're on gprecise. 285 ASSERT_EQ(0, pthread_setname_np(pthread_self(), "short 1")); 286#else // __BIONIC__ 287 GTEST_LOG_(INFO) << "This test does nothing.\n"; 288#endif // __BIONIC__ 289} 290 291TEST(pthread, pthread_setname_np__other) { 292#if defined(__BIONIC__) // Not all build servers have a new enough glibc? TODO: remove when they're on gprecise. 293 // Emulator kernels don't currently support setting the name of other threads. 294 char* filename = NULL; 295 asprintf(&filename, "/proc/self/task/%d/comm", gettid()); 296 struct stat sb; 297 bool has_comm = (stat(filename, &sb) != -1); 298 free(filename); 299 300 if (has_comm) { 301 pthread_t t1; 302 ASSERT_EQ(0, pthread_create(&t1, NULL, SleepFn, reinterpret_cast<void*>(5))); 303 ASSERT_EQ(0, pthread_setname_np(t1, "short 2")); 304 } else { 305 fprintf(stderr, "skipping test: this kernel doesn't have /proc/self/task/tid/comm files!\n"); 306 } 307#else // __BIONIC__ 308 GTEST_LOG_(INFO) << "This test does nothing.\n"; 309#endif // __BIONIC__ 310} 311 312TEST(pthread, pthread_setname_np__no_such_thread) { 313#if defined(__BIONIC__) // Not all build servers have a new enough glibc? TODO: remove when they're on gprecise. 314 pthread_t dead_thread; 315 MakeDeadThread(dead_thread); 316 317 // Call pthread_setname_np after thread has already exited. 318 ASSERT_EQ(ESRCH, pthread_setname_np(dead_thread, "short 3")); 319#else // __BIONIC__ 320 GTEST_LOG_(INFO) << "This test does nothing.\n"; 321#endif // __BIONIC__ 322} 323 324TEST(pthread, pthread_kill__0) { 325 // Signal 0 just tests that the thread exists, so it's safe to call on ourselves. 326 ASSERT_EQ(0, pthread_kill(pthread_self(), 0)); 327} 328 329TEST(pthread, pthread_kill__invalid_signal) { 330 ASSERT_EQ(EINVAL, pthread_kill(pthread_self(), -1)); 331} 332 333static void pthread_kill__in_signal_handler_helper(int signal_number) { 334 static int count = 0; 335 ASSERT_EQ(SIGALRM, signal_number); 336 if (++count == 1) { 337 // Can we call pthread_kill from a signal handler? 338 ASSERT_EQ(0, pthread_kill(pthread_self(), SIGALRM)); 339 } 340} 341 342TEST(pthread, pthread_kill__in_signal_handler) { 343 ScopedSignalHandler ssh(SIGALRM, pthread_kill__in_signal_handler_helper); 344 ASSERT_EQ(0, pthread_kill(pthread_self(), SIGALRM)); 345} 346 347TEST(pthread, pthread_detach__no_such_thread) { 348 pthread_t dead_thread; 349 MakeDeadThread(dead_thread); 350 351 ASSERT_EQ(ESRCH, pthread_detach(dead_thread)); 352} 353 354TEST(pthread, pthread_detach__leak) { 355 size_t initial_bytes = mallinfo().uordblks; 356 357 pthread_attr_t attr; 358 ASSERT_EQ(0, pthread_attr_init(&attr)); 359 ASSERT_EQ(0, pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE)); 360 361 std::vector<pthread_t> threads; 362 for (size_t i = 0; i < 32; ++i) { 363 pthread_t t; 364 ASSERT_EQ(0, pthread_create(&t, &attr, IdFn, NULL)); 365 threads.push_back(t); 366 } 367 368 sleep(1); 369 370 for (size_t i = 0; i < 32; ++i) { 371 ASSERT_EQ(0, pthread_detach(threads[i])) << i; 372 } 373 374 size_t final_bytes = mallinfo().uordblks; 375 376 int leaked_bytes = (final_bytes - initial_bytes); 377 378 // User code (like this test) doesn't know how large pthread_internal_t is. 379 // We can be pretty sure it's more than 128 bytes. 380 ASSERT_LT(leaked_bytes, 32 /*threads*/ * 128 /*bytes*/); 381} 382 383TEST(pthread, pthread_getcpuclockid__clock_gettime) { 384 pthread_t t; 385 ASSERT_EQ(0, pthread_create(&t, NULL, SleepFn, reinterpret_cast<void*>(5))); 386 387 clockid_t c; 388 ASSERT_EQ(0, pthread_getcpuclockid(t, &c)); 389 timespec ts; 390 ASSERT_EQ(0, clock_gettime(c, &ts)); 391} 392 393TEST(pthread, pthread_getcpuclockid__no_such_thread) { 394 pthread_t dead_thread; 395 MakeDeadThread(dead_thread); 396 397 clockid_t c; 398 ASSERT_EQ(ESRCH, pthread_getcpuclockid(dead_thread, &c)); 399} 400 401TEST(pthread, pthread_getschedparam__no_such_thread) { 402 pthread_t dead_thread; 403 MakeDeadThread(dead_thread); 404 405 int policy; 406 sched_param param; 407 ASSERT_EQ(ESRCH, pthread_getschedparam(dead_thread, &policy, ¶m)); 408} 409 410TEST(pthread, pthread_setschedparam__no_such_thread) { 411 pthread_t dead_thread; 412 MakeDeadThread(dead_thread); 413 414 int policy = 0; 415 sched_param param; 416 ASSERT_EQ(ESRCH, pthread_setschedparam(dead_thread, policy, ¶m)); 417} 418 419TEST(pthread, pthread_join__no_such_thread) { 420 pthread_t dead_thread; 421 MakeDeadThread(dead_thread); 422 423 void* result; 424 ASSERT_EQ(ESRCH, pthread_join(dead_thread, &result)); 425} 426 427TEST(pthread, pthread_kill__no_such_thread) { 428 pthread_t dead_thread; 429 MakeDeadThread(dead_thread); 430 431 ASSERT_EQ(ESRCH, pthread_kill(dead_thread, 0)); 432} 433 434TEST(pthread, pthread_join__multijoin) { 435 bool done = false; 436 437 pthread_t t1; 438 ASSERT_EQ(0, pthread_create(&t1, NULL, SpinFn, &done)); 439 440 pthread_t t2; 441 ASSERT_EQ(0, pthread_create(&t2, NULL, JoinFn, reinterpret_cast<void*>(t1))); 442 443 sleep(1); // (Give t2 a chance to call pthread_join.) 444 445 // Multiple joins to the same thread should fail. 446 ASSERT_EQ(EINVAL, pthread_join(t1, NULL)); 447 448 done = true; 449 450 // ...but t2's join on t1 still goes ahead (which we can tell because our join on t2 finishes). 451 void* join_result; 452 ASSERT_EQ(0, pthread_join(t2, &join_result)); 453 ASSERT_EQ(0U, reinterpret_cast<uintptr_t>(join_result)); 454} 455 456TEST(pthread, pthread_join__race) { 457 // http://b/11693195 --- pthread_join could return before the thread had actually exited. 458 // If the joiner unmapped the thread's stack, that could lead to SIGSEGV in the thread. 459 for (size_t i = 0; i < 1024; ++i) { 460 size_t stack_size = 64*1024; 461 void* stack = mmap(NULL, stack_size, PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, -1, 0); 462 463 pthread_attr_t a; 464 pthread_attr_init(&a); 465 pthread_attr_setstack(&a, stack, stack_size); 466 467 pthread_t t; 468 ASSERT_EQ(0, pthread_create(&t, &a, IdFn, NULL)); 469 ASSERT_EQ(0, pthread_join(t, NULL)); 470 ASSERT_EQ(0, munmap(stack, stack_size)); 471 } 472} 473 474static void* GetActualGuardSizeFn(void* arg) { 475 pthread_attr_t attributes; 476 pthread_getattr_np(pthread_self(), &attributes); 477 pthread_attr_getguardsize(&attributes, reinterpret_cast<size_t*>(arg)); 478 return NULL; 479} 480 481static size_t GetActualGuardSize(const pthread_attr_t& attributes) { 482 size_t result; 483 pthread_t t; 484 pthread_create(&t, &attributes, GetActualGuardSizeFn, &result); 485 void* join_result; 486 pthread_join(t, &join_result); 487 return result; 488} 489 490static void* GetActualStackSizeFn(void* arg) { 491 pthread_attr_t attributes; 492 pthread_getattr_np(pthread_self(), &attributes); 493 pthread_attr_getstacksize(&attributes, reinterpret_cast<size_t*>(arg)); 494 return NULL; 495} 496 497static size_t GetActualStackSize(const pthread_attr_t& attributes) { 498 size_t result; 499 pthread_t t; 500 pthread_create(&t, &attributes, GetActualStackSizeFn, &result); 501 void* join_result; 502 pthread_join(t, &join_result); 503 return result; 504} 505 506TEST(pthread, pthread_attr_setguardsize) { 507 pthread_attr_t attributes; 508 ASSERT_EQ(0, pthread_attr_init(&attributes)); 509 510 // Get the default guard size. 511 size_t default_guard_size; 512 ASSERT_EQ(0, pthread_attr_getguardsize(&attributes, &default_guard_size)); 513 514 // No such thing as too small: will be rounded up to one page by pthread_create. 515 ASSERT_EQ(0, pthread_attr_setguardsize(&attributes, 128)); 516 size_t guard_size; 517 ASSERT_EQ(0, pthread_attr_getguardsize(&attributes, &guard_size)); 518 ASSERT_EQ(128U, guard_size); 519 ASSERT_EQ(4096U, GetActualGuardSize(attributes)); 520 521 // Large enough and a multiple of the page size. 522 ASSERT_EQ(0, pthread_attr_setguardsize(&attributes, 32*1024)); 523 ASSERT_EQ(0, pthread_attr_getguardsize(&attributes, &guard_size)); 524 ASSERT_EQ(32*1024U, guard_size); 525 526 // Large enough but not a multiple of the page size; will be rounded up by pthread_create. 527 ASSERT_EQ(0, pthread_attr_setguardsize(&attributes, 32*1024 + 1)); 528 ASSERT_EQ(0, pthread_attr_getguardsize(&attributes, &guard_size)); 529 ASSERT_EQ(32*1024U + 1, guard_size); 530} 531 532TEST(pthread, pthread_attr_setstacksize) { 533 pthread_attr_t attributes; 534 ASSERT_EQ(0, pthread_attr_init(&attributes)); 535 536 // Get the default stack size. 537 size_t default_stack_size; 538 ASSERT_EQ(0, pthread_attr_getstacksize(&attributes, &default_stack_size)); 539 540 // Too small. 541 ASSERT_EQ(EINVAL, pthread_attr_setstacksize(&attributes, 128)); 542 size_t stack_size; 543 ASSERT_EQ(0, pthread_attr_getstacksize(&attributes, &stack_size)); 544 ASSERT_EQ(default_stack_size, stack_size); 545 ASSERT_GE(GetActualStackSize(attributes), default_stack_size); 546 547 // Large enough and a multiple of the page size. 548 ASSERT_EQ(0, pthread_attr_setstacksize(&attributes, 32*1024)); 549 ASSERT_EQ(0, pthread_attr_getstacksize(&attributes, &stack_size)); 550 ASSERT_EQ(32*1024U, stack_size); 551 ASSERT_EQ(GetActualStackSize(attributes), 32*1024U); 552 553 // Large enough but not a multiple of the page size; will be rounded up by pthread_create. 554 ASSERT_EQ(0, pthread_attr_setstacksize(&attributes, 32*1024 + 1)); 555 ASSERT_EQ(0, pthread_attr_getstacksize(&attributes, &stack_size)); 556 ASSERT_EQ(32*1024U + 1, stack_size); 557#if defined(__BIONIC__) 558 // Bionic rounds up, which is what POSIX allows. 559 ASSERT_EQ(GetActualStackSize(attributes), (32 + 4)*1024U); 560#else // __BIONIC__ 561 // glibc rounds down, in violation of POSIX. They document this in their BUGS section. 562 ASSERT_EQ(GetActualStackSize(attributes), 32*1024U); 563#endif // __BIONIC__ 564} 565 566TEST(pthread, pthread_rwlock_smoke) { 567 pthread_rwlock_t l; 568 ASSERT_EQ(0, pthread_rwlock_init(&l, NULL)); 569 570 ASSERT_EQ(0, pthread_rwlock_rdlock(&l)); 571 ASSERT_EQ(0, pthread_rwlock_unlock(&l)); 572 573 ASSERT_EQ(0, pthread_rwlock_wrlock(&l)); 574 ASSERT_EQ(0, pthread_rwlock_unlock(&l)); 575 576 ASSERT_EQ(0, pthread_rwlock_destroy(&l)); 577} 578 579static int gOnceFnCallCount = 0; 580static void OnceFn() { 581 ++gOnceFnCallCount; 582} 583 584TEST(pthread, pthread_once_smoke) { 585 pthread_once_t once_control = PTHREAD_ONCE_INIT; 586 ASSERT_EQ(0, pthread_once(&once_control, OnceFn)); 587 ASSERT_EQ(0, pthread_once(&once_control, OnceFn)); 588 ASSERT_EQ(1, gOnceFnCallCount); 589} 590 591static int gAtForkPrepareCalls = 0; 592static void AtForkPrepare1() { gAtForkPrepareCalls = (gAtForkPrepareCalls << 4) | 1; } 593static void AtForkPrepare2() { gAtForkPrepareCalls = (gAtForkPrepareCalls << 4) | 2; } 594static int gAtForkParentCalls = 0; 595static void AtForkParent1() { gAtForkParentCalls = (gAtForkParentCalls << 4) | 1; } 596static void AtForkParent2() { gAtForkParentCalls = (gAtForkParentCalls << 4) | 2; } 597static int gAtForkChildCalls = 0; 598static void AtForkChild1() { gAtForkChildCalls = (gAtForkChildCalls << 4) | 1; } 599static void AtForkChild2() { gAtForkChildCalls = (gAtForkChildCalls << 4) | 2; } 600 601TEST(pthread, pthread_atfork) { 602 ASSERT_EQ(0, pthread_atfork(AtForkPrepare1, AtForkParent1, AtForkChild1)); 603 ASSERT_EQ(0, pthread_atfork(AtForkPrepare2, AtForkParent2, AtForkChild2)); 604 605 int pid = fork(); 606 ASSERT_NE(-1, pid) << strerror(errno); 607 608 // Child and parent calls are made in the order they were registered. 609 if (pid == 0) { 610 ASSERT_EQ(0x12, gAtForkChildCalls); 611 _exit(0); 612 } 613 ASSERT_EQ(0x12, gAtForkParentCalls); 614 615 // Prepare calls are made in the reverse order. 616 ASSERT_EQ(0x21, gAtForkPrepareCalls); 617} 618 619TEST(pthread, pthread_attr_getscope) { 620 pthread_attr_t attr; 621 ASSERT_EQ(0, pthread_attr_init(&attr)); 622 623 int scope; 624 ASSERT_EQ(0, pthread_attr_getscope(&attr, &scope)); 625 ASSERT_EQ(PTHREAD_SCOPE_SYSTEM, scope); 626} 627 628TEST(pthread, pthread_condattr_init) { 629 pthread_condattr_t attr; 630 pthread_condattr_init(&attr); 631 632 clockid_t clock; 633 ASSERT_EQ(0, pthread_condattr_getclock(&attr, &clock)); 634 ASSERT_EQ(CLOCK_REALTIME, clock); 635 636 int pshared; 637 ASSERT_EQ(0, pthread_condattr_getpshared(&attr, &pshared)); 638 ASSERT_EQ(PTHREAD_PROCESS_PRIVATE, pshared); 639} 640 641TEST(pthread, pthread_condattr_setclock) { 642 pthread_condattr_t attr; 643 pthread_condattr_init(&attr); 644 645 ASSERT_EQ(0, pthread_condattr_setclock(&attr, CLOCK_REALTIME)); 646 clockid_t clock; 647 ASSERT_EQ(0, pthread_condattr_getclock(&attr, &clock)); 648 ASSERT_EQ(CLOCK_REALTIME, clock); 649 650 ASSERT_EQ(0, pthread_condattr_setclock(&attr, CLOCK_MONOTONIC)); 651 ASSERT_EQ(0, pthread_condattr_getclock(&attr, &clock)); 652 ASSERT_EQ(CLOCK_MONOTONIC, clock); 653 654 ASSERT_EQ(EINVAL, pthread_condattr_setclock(&attr, CLOCK_PROCESS_CPUTIME_ID)); 655} 656 657TEST(pthread, pthread_cond_broadcast__preserves_condattr_flags) { 658#if defined(__BIONIC__) // This tests a bionic implementation detail. 659 pthread_condattr_t attr; 660 pthread_condattr_init(&attr); 661 662 ASSERT_EQ(0, pthread_condattr_setclock(&attr, CLOCK_MONOTONIC)); 663 ASSERT_EQ(0, pthread_condattr_setpshared(&attr, PTHREAD_PROCESS_SHARED)); 664 665 pthread_cond_t cond_var; 666 ASSERT_EQ(0, pthread_cond_init(&cond_var, &attr)); 667 668 ASSERT_EQ(0, pthread_cond_signal(&cond_var)); 669 ASSERT_EQ(0, pthread_cond_broadcast(&cond_var)); 670 671 attr = static_cast<pthread_condattr_t>(cond_var.value); 672 clockid_t clock; 673 ASSERT_EQ(0, pthread_condattr_getclock(&attr, &clock)); 674 ASSERT_EQ(CLOCK_MONOTONIC, clock); 675 int pshared; 676 ASSERT_EQ(0, pthread_condattr_getpshared(&attr, &pshared)); 677 ASSERT_EQ(PTHREAD_PROCESS_SHARED, pshared); 678#else // __BIONIC__ 679 GTEST_LOG_(INFO) << "This test does nothing.\n"; 680#endif // __BIONIC__ 681} 682 683TEST(pthread, pthread_mutex_timedlock) { 684 pthread_mutex_t m; 685 ASSERT_EQ(0, pthread_mutex_init(&m, NULL)); 686 687 // If the mutex is already locked, pthread_mutex_timedlock should time out. 688 ASSERT_EQ(0, pthread_mutex_lock(&m)); 689 690 timespec ts; 691 ASSERT_EQ(0, clock_gettime(CLOCK_REALTIME, &ts)); 692 ts.tv_nsec += 1; 693 ASSERT_EQ(ETIMEDOUT, pthread_mutex_timedlock(&m, &ts)); 694 695 // If the mutex is unlocked, pthread_mutex_timedlock should succeed. 696 ASSERT_EQ(0, pthread_mutex_unlock(&m)); 697 698 ASSERT_EQ(0, clock_gettime(CLOCK_REALTIME, &ts)); 699 ts.tv_nsec += 1; 700 ASSERT_EQ(0, pthread_mutex_timedlock(&m, &ts)); 701 702 ASSERT_EQ(0, pthread_mutex_unlock(&m)); 703 ASSERT_EQ(0, pthread_mutex_destroy(&m)); 704} 705