2 * Copyright (C) 2013 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
21 #include <gtest/gtest.h>
24 #include <stdatomic.h>
25 #include <sys/syscall.h>
26 #include <sys/types.h>
29 #include "ScopedSignalHandler.h"
33 tm* broken_down = gmtime(&t);
34 ASSERT_TRUE(broken_down != NULL);
35 ASSERT_EQ(0, broken_down->tm_sec);
36 ASSERT_EQ(0, broken_down->tm_min);
37 ASSERT_EQ(0, broken_down->tm_hour);
38 ASSERT_EQ(1, broken_down->tm_mday);
39 ASSERT_EQ(0, broken_down->tm_mon);
40 ASSERT_EQ(1970, broken_down->tm_year + 1900);
43 static void* gmtime_no_stack_overflow_14313703_fn(void*) {
44 const char* original_tz = getenv("TZ");
45 // Ensure we'll actually have to enter tzload by using a time zone that doesn't exist.
46 setenv("TZ", "gmtime_stack_overflow_14313703", 1);
48 if (original_tz != NULL) {
49 setenv("TZ", original_tz, 1);
55 TEST(time, gmtime_no_stack_overflow_14313703) {
56 // Is it safe to call tzload on a thread with a small stack?
58 // https://code.google.com/p/android/issues/detail?id=61130
59 pthread_attr_t attributes;
60 ASSERT_EQ(0, pthread_attr_init(&attributes));
61 #if defined(__BIONIC__)
62 ASSERT_EQ(0, pthread_attr_setstacksize(&attributes, PTHREAD_STACK_MIN));
64 // PTHREAD_STACK_MIN not currently in the host GCC sysroot.
65 ASSERT_EQ(0, pthread_attr_setstacksize(&attributes, 4 * getpagesize()));
69 ASSERT_EQ(0, pthread_create(&t, &attributes, gmtime_no_stack_overflow_14313703_fn, NULL));
71 ASSERT_EQ(0, pthread_join(t, &result));
74 TEST(time, mktime_10310929) {
76 memset(&t, 0, sizeof(tm));
81 #if !defined(__LP64__)
82 // 32-bit bionic stupidly had a signed 32-bit time_t.
83 ASSERT_EQ(-1, mktime(&t));
85 // Everyone else should be using a signed 64-bit time_t.
86 ASSERT_GE(sizeof(time_t) * 8, 64U);
88 setenv("TZ", "America/Los_Angeles", 1);
90 ASSERT_EQ(static_cast<time_t>(4108348800U), mktime(&t));
92 setenv("TZ", "UTC", 1);
94 ASSERT_EQ(static_cast<time_t>(4108320000U), mktime(&t));
98 TEST(time, strftime) {
99 setenv("TZ", "UTC", 1);
102 memset(&t, 0, sizeof(tm));
109 // Seconds since the epoch.
110 #if defined(__BIONIC__) || defined(__LP64__) // Not 32-bit glibc.
111 EXPECT_EQ(10U, strftime(buf, sizeof(buf), "%s", &t));
112 EXPECT_STREQ("4108320000", buf);
115 // Date and time as text.
116 EXPECT_EQ(24U, strftime(buf, sizeof(buf), "%c", &t));
117 EXPECT_STREQ("Sun Mar 10 00:00:00 2100", buf);
120 TEST(time, strptime) {
121 setenv("TZ", "UTC", 1);
126 memset(&t, 0, sizeof(t));
127 strptime("11:14", "%R", &t);
128 strftime(buf, sizeof(buf), "%H:%M", &t);
129 EXPECT_STREQ("11:14", buf);
131 memset(&t, 0, sizeof(t));
132 strptime("09:41:53", "%T", &t);
133 strftime(buf, sizeof(buf), "%H:%M:%S", &t);
134 EXPECT_STREQ("09:41:53", buf);
137 void SetTime(timer_t t, time_t value_s, time_t value_ns, time_t interval_s, time_t interval_ns) {
139 ts.it_value.tv_sec = value_s;
140 ts.it_value.tv_nsec = value_ns;
141 ts.it_interval.tv_sec = interval_s;
142 ts.it_interval.tv_nsec = interval_ns;
143 ASSERT_EQ(0, timer_settime(t, 0, &ts, NULL));
146 static void NoOpNotifyFunction(sigval_t) {
149 TEST(time, timer_create) {
151 memset(&se, 0, sizeof(se));
152 se.sigev_notify = SIGEV_THREAD;
153 se.sigev_notify_function = NoOpNotifyFunction;
155 ASSERT_EQ(0, timer_create(CLOCK_MONOTONIC, &se, &timer_id));
158 ASSERT_NE(-1, pid) << strerror(errno);
161 // Timers are not inherited by the child.
162 ASSERT_EQ(-1, timer_delete(timer_id));
163 ASSERT_EQ(EINVAL, errno);
168 ASSERT_EQ(pid, waitpid(pid, &status, 0));
169 ASSERT_TRUE(WIFEXITED(status));
170 ASSERT_EQ(0, WEXITSTATUS(status));
172 ASSERT_EQ(0, timer_delete(timer_id));
175 static int timer_create_SIGEV_SIGNAL_signal_handler_invocation_count;
176 static void timer_create_SIGEV_SIGNAL_signal_handler(int signal_number) {
177 ++timer_create_SIGEV_SIGNAL_signal_handler_invocation_count;
178 ASSERT_EQ(SIGUSR1, signal_number);
181 TEST(time, timer_create_SIGEV_SIGNAL) {
183 memset(&se, 0, sizeof(se));
184 se.sigev_notify = SIGEV_SIGNAL;
185 se.sigev_signo = SIGUSR1;
188 ASSERT_EQ(0, timer_create(CLOCK_MONOTONIC, &se, &timer_id));
190 timer_create_SIGEV_SIGNAL_signal_handler_invocation_count = 0;
191 ScopedSignalHandler ssh(SIGUSR1, timer_create_SIGEV_SIGNAL_signal_handler);
193 ASSERT_EQ(0, timer_create_SIGEV_SIGNAL_signal_handler_invocation_count);
196 ts.it_value.tv_sec = 0;
197 ts.it_value.tv_nsec = 1;
198 ts.it_interval.tv_sec = 0;
199 ts.it_interval.tv_nsec = 0;
200 ASSERT_EQ(0, timer_settime(timer_id, TIMER_ABSTIME, &ts, NULL));
203 ASSERT_EQ(1, timer_create_SIGEV_SIGNAL_signal_handler_invocation_count);
214 ASSERT_FALSE(timer_valid);
215 ASSERT_EQ(0, timer_create(CLOCK_REALTIME, &se, &timer_id));
220 Counter(void (*fn)(sigval_t)) : value(ATOMIC_VAR_INIT(0)), timer_valid(false) {
221 memset(&se, 0, sizeof(se));
222 se.sigev_notify = SIGEV_THREAD;
223 se.sigev_notify_function = fn;
224 se.sigev_value.sival_ptr = this;
229 ASSERT_TRUE(timer_valid);
230 ASSERT_EQ(0, timer_delete(timer_id));
241 return atomic_load(&value);
244 void SetTime(time_t value_s, time_t value_ns, time_t interval_s, time_t interval_ns) {
245 ::SetTime(timer_id, value_s, value_ns, interval_s, interval_ns);
248 bool ValueUpdated() {
249 int current_value = atomic_load(&value);
250 time_t start = time(NULL);
251 while (current_value == atomic_load(&value) && (time(NULL) - start) < 5) {
253 return current_value != atomic_load(&value);
256 static void CountNotifyFunction(sigval_t value) {
257 Counter* cd = reinterpret_cast<Counter*>(value.sival_ptr);
258 atomic_fetch_add(&cd->value, 1);
261 static void CountAndDisarmNotifyFunction(sigval_t value) {
262 Counter* cd = reinterpret_cast<Counter*>(value.sival_ptr);
263 atomic_fetch_add(&cd->value, 1);
265 // Setting the initial expiration time to 0 disarms the timer.
266 cd->SetTime(0, 0, 1, 0);
270 TEST(time, timer_settime_0) {
271 Counter counter(Counter::CountAndDisarmNotifyFunction);
272 ASSERT_EQ(0, counter.Value());
274 counter.SetTime(0, 1, 1, 0);
277 // The count should just be 1 because we disarmed the timer the first time it fired.
278 ASSERT_EQ(1, counter.Value());
281 TEST(time, timer_settime_repeats) {
282 Counter counter(Counter::CountNotifyFunction);
283 ASSERT_EQ(0, counter.Value());
285 counter.SetTime(0, 1, 0, 10);
286 ASSERT_TRUE(counter.ValueUpdated());
287 ASSERT_TRUE(counter.ValueUpdated());
288 ASSERT_TRUE(counter.ValueUpdated());
289 counter.DeleteTimer();
290 // Add a sleep as other threads may be calling the callback function when the timer is deleted.
294 static int timer_create_NULL_signal_handler_invocation_count;
295 static void timer_create_NULL_signal_handler(int signal_number) {
296 ++timer_create_NULL_signal_handler_invocation_count;
297 ASSERT_EQ(SIGALRM, signal_number);
300 TEST(time, timer_create_NULL) {
301 // A NULL sigevent* is equivalent to asking for SIGEV_SIGNAL for SIGALRM.
303 ASSERT_EQ(0, timer_create(CLOCK_MONOTONIC, NULL, &timer_id));
305 timer_create_NULL_signal_handler_invocation_count = 0;
306 ScopedSignalHandler ssh(SIGALRM, timer_create_NULL_signal_handler);
308 ASSERT_EQ(0, timer_create_NULL_signal_handler_invocation_count);
310 SetTime(timer_id, 0, 1, 0, 0);
313 ASSERT_EQ(1, timer_create_NULL_signal_handler_invocation_count);
316 TEST(time, timer_create_EINVAL) {
317 clockid_t invalid_clock = 16;
319 // A SIGEV_SIGNAL timer is easy; the kernel does all that.
321 ASSERT_EQ(-1, timer_create(invalid_clock, NULL, &timer_id));
322 ASSERT_EQ(EINVAL, errno);
324 // A SIGEV_THREAD timer is more interesting because we have stuff to clean up.
326 memset(&se, 0, sizeof(se));
327 se.sigev_notify = SIGEV_THREAD;
328 se.sigev_notify_function = NoOpNotifyFunction;
329 ASSERT_EQ(-1, timer_create(invalid_clock, &se, &timer_id));
330 ASSERT_EQ(EINVAL, errno);
333 TEST(time, timer_delete_multiple) {
335 ASSERT_EQ(0, timer_create(CLOCK_MONOTONIC, NULL, &timer_id));
336 ASSERT_EQ(0, timer_delete(timer_id));
337 ASSERT_EQ(-1, timer_delete(timer_id));
338 ASSERT_EQ(EINVAL, errno);
341 memset(&se, 0, sizeof(se));
342 se.sigev_notify = SIGEV_THREAD;
343 se.sigev_notify_function = NoOpNotifyFunction;
344 ASSERT_EQ(0, timer_create(CLOCK_MONOTONIC, &se, &timer_id));
345 ASSERT_EQ(0, timer_delete(timer_id));
346 ASSERT_EQ(-1, timer_delete(timer_id));
347 ASSERT_EQ(EINVAL, errno);
350 TEST(time, timer_create_multiple) {
351 Counter counter1(Counter::CountNotifyFunction);
352 Counter counter2(Counter::CountNotifyFunction);
353 Counter counter3(Counter::CountNotifyFunction);
355 ASSERT_EQ(0, counter1.Value());
356 ASSERT_EQ(0, counter2.Value());
357 ASSERT_EQ(0, counter3.Value());
359 counter2.SetTime(0, 500000000, 0, 0);
362 EXPECT_EQ(0, counter1.Value());
363 EXPECT_EQ(1, counter2.Value());
364 EXPECT_EQ(0, counter3.Value());
367 // Test to verify that disarming a repeatable timer disables the callbacks.
368 TEST(time, timer_disarm_terminates) {
369 Counter counter(Counter::CountNotifyFunction);
370 ASSERT_EQ(0, counter.Value());
372 counter.SetTime(0, 1, 0, 1);
373 ASSERT_TRUE(counter.ValueUpdated());
374 ASSERT_TRUE(counter.ValueUpdated());
375 ASSERT_TRUE(counter.ValueUpdated());
377 counter.SetTime(0, 0, 0, 0);
378 // Add a sleep as the kernel may have pending events when the timer is disarmed.
380 int value = counter.Value();
383 // Verify the counter has not been incremented.
384 ASSERT_EQ(value, counter.Value());
387 // Test to verify that deleting a repeatable timer disables the callbacks.
388 TEST(time, timer_delete_terminates) {
389 Counter counter(Counter::CountNotifyFunction);
390 ASSERT_EQ(0, counter.Value());
392 counter.SetTime(0, 1, 0, 1);
393 ASSERT_TRUE(counter.ValueUpdated());
394 ASSERT_TRUE(counter.ValueUpdated());
395 ASSERT_TRUE(counter.ValueUpdated());
397 counter.DeleteTimer();
398 // Add a sleep as other threads may be calling the callback function when the timer is deleted.
400 int value = counter.Value();
403 // Verify the counter has not been incremented.
404 ASSERT_EQ(value, counter.Value());
407 struct TimerDeleteData {
410 volatile bool complete;
413 static void TimerDeleteCallback(sigval_t value) {
414 TimerDeleteData* tdd = reinterpret_cast<TimerDeleteData*>(value.sival_ptr);
416 tdd->thread_id = pthread_self();
417 timer_delete(tdd->timer_id);
418 tdd->complete = true;
421 TEST(time, timer_delete_from_timer_thread) {
425 memset(&se, 0, sizeof(se));
426 se.sigev_notify = SIGEV_THREAD;
427 se.sigev_notify_function = TimerDeleteCallback;
428 se.sigev_value.sival_ptr = &tdd;
430 tdd.complete = false;
431 ASSERT_EQ(0, timer_create(CLOCK_REALTIME, &se, &tdd.timer_id));
434 ts.it_value.tv_sec = 1;
435 ts.it_value.tv_nsec = 0;
436 ts.it_interval.tv_sec = 0;
437 ts.it_interval.tv_nsec = 0;
438 ASSERT_EQ(0, timer_settime(tdd.timer_id, 0, &ts, NULL));
440 time_t cur_time = time(NULL);
441 while (!tdd.complete && (time(NULL) - cur_time) < 5);
442 ASSERT_TRUE(tdd.complete);
444 #if defined(__BIONIC__)
445 // Since bionic timers are implemented by creating a thread to handle the
446 // callback, verify that the thread actually completes.
447 cur_time = time(NULL);
448 while (pthread_detach(tdd.thread_id) != ESRCH && (time(NULL) - cur_time) < 5);
449 ASSERT_EQ(ESRCH, pthread_detach(tdd.thread_id));
453 TEST(time, clock_gettime) {
454 // Try to ensure that our vdso clock_gettime is working.
456 ASSERT_EQ(0, clock_gettime(CLOCK_MONOTONIC, &ts1));
458 ASSERT_EQ(0, syscall(__NR_clock_gettime, CLOCK_MONOTONIC, &ts2));
460 // What's the difference between the two?
461 ts2.tv_sec -= ts1.tv_sec;
462 ts2.tv_nsec -= ts1.tv_nsec;
463 if (ts2.tv_nsec < 0) {
465 ts2.tv_nsec += 1000000000;
468 // Should be less than (a very generous, to try to avoid flakiness) 1000000ns.
469 ASSERT_EQ(0, ts2.tv_sec);
470 ASSERT_LT(ts2.tv_nsec, 1000000);