Ewout van Bekkum | e3b5603 | 2020-12-22 12:00:18 -0800 | [diff] [blame] | 1 | // Copyright 2020 The Pigweed Authors |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| 4 | // use this file except in compliance with the License. You may obtain a copy of |
| 5 | // the License at |
| 6 | // |
| 7 | // https://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| 11 | // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| 12 | // License for the specific language governing permissions and limitations under |
| 13 | // the License. |
| 14 | |
| 15 | #include <chrono> |
| 16 | |
| 17 | #include "gtest/gtest.h" |
| 18 | #include "pw_chrono/system_clock.h" |
| 19 | #include "pw_thread/id.h" |
| 20 | #include "pw_thread/sleep.h" |
| 21 | |
| 22 | using pw::chrono::SystemClock; |
Ewout van Bekkum | 830d5d1 | 2021-01-28 18:58:03 -0800 | [diff] [blame] | 23 | using namespace std::chrono_literals; |
Ewout van Bekkum | e3b5603 | 2020-12-22 12:00:18 -0800 | [diff] [blame] | 24 | |
| 25 | namespace pw::this_thread { |
| 26 | namespace { |
| 27 | |
| 28 | extern "C" { |
| 29 | |
| 30 | // Functions defined in sleep_facade_test_c.c which call the API from C. |
Ewout van Bekkum | 39144b6 | 2021-09-07 16:05:35 -0700 | [diff] [blame] | 31 | void pw_this_thread_CallSleepFor(pw_chrono_SystemClock_Duration sleep_duration); |
| 32 | void pw_this_thread_CallSleepUntil(pw_chrono_SystemClock_TimePoint wakeup_time); |
Ewout van Bekkum | e3b5603 | 2020-12-22 12:00:18 -0800 | [diff] [blame] | 33 | |
| 34 | } // extern "C" |
| 35 | |
Ewout van Bekkum | e3b5603 | 2020-12-22 12:00:18 -0800 | [diff] [blame] | 36 | // We can't control the SystemClock's period configuration, so just in case |
| 37 | // duration cannot be accurately expressed in integer ticks, round the |
Ewout van Bekkum | 959b883 | 2021-03-11 08:55:01 -0800 | [diff] [blame] | 38 | // duration up. |
| 39 | constexpr SystemClock::duration kRoundedArbitraryDuration = |
| 40 | SystemClock::for_at_least(42ms); |
Ewout van Bekkum | 830d5d1 | 2021-01-28 18:58:03 -0800 | [diff] [blame] | 41 | constexpr pw_chrono_SystemClock_Duration kRoundedArbitraryDurationInC = |
| 42 | PW_SYSTEM_CLOCK_MS(42); |
Ewout van Bekkum | e3b5603 | 2020-12-22 12:00:18 -0800 | [diff] [blame] | 43 | |
Ewout van Bekkum | 4b5ad7d | 2021-11-23 15:56:23 -0800 | [diff] [blame] | 44 | TEST(Sleep, SleepForPositiveDuration) { |
Ewout van Bekkum | e3b5603 | 2020-12-22 12:00:18 -0800 | [diff] [blame] | 45 | // Ensure we are in a thread context, meaning we are permitted to sleep. |
| 46 | ASSERT_NE(get_id(), thread::Id()); |
| 47 | |
Ewout van Bekkum | b34a154 | 2021-11-05 10:42:17 -0700 | [diff] [blame] | 48 | SystemClock::time_point before = SystemClock::now(); |
Ewout van Bekkum | e3b5603 | 2020-12-22 12:00:18 -0800 | [diff] [blame] | 49 | sleep_for(kRoundedArbitraryDuration); |
Ewout van Bekkum | b34a154 | 2021-11-05 10:42:17 -0700 | [diff] [blame] | 50 | SystemClock::duration time_elapsed = SystemClock::now() - before; |
Ewout van Bekkum | e3b5603 | 2020-12-22 12:00:18 -0800 | [diff] [blame] | 51 | EXPECT_GE(time_elapsed, kRoundedArbitraryDuration); |
Ewout van Bekkum | 4b5ad7d | 2021-11-23 15:56:23 -0800 | [diff] [blame] | 52 | } |
| 53 | |
| 54 | TEST(Sleep, SleepForZeroLengthDuration) { |
| 55 | // Ensure we are in a thread context, meaning we are permitted to sleep. |
| 56 | ASSERT_NE(get_id(), thread::Id()); |
Ewout van Bekkum | b34a154 | 2021-11-05 10:42:17 -0700 | [diff] [blame] | 57 | |
| 58 | // Ensure it doesn't sleep when a zero length duration is used. |
Ewout van Bekkum | 4b5ad7d | 2021-11-23 15:56:23 -0800 | [diff] [blame] | 59 | SystemClock::time_point before = SystemClock::now(); |
Ewout van Bekkum | b34a154 | 2021-11-05 10:42:17 -0700 | [diff] [blame] | 60 | sleep_for(SystemClock::duration::zero()); |
Ewout van Bekkum | 4b5ad7d | 2021-11-23 15:56:23 -0800 | [diff] [blame] | 61 | SystemClock::duration time_elapsed = SystemClock::now() - before; |
Ewout van Bekkum | b34a154 | 2021-11-05 10:42:17 -0700 | [diff] [blame] | 62 | EXPECT_LT(time_elapsed, kRoundedArbitraryDuration); |
Ewout van Bekkum | e3b5603 | 2020-12-22 12:00:18 -0800 | [diff] [blame] | 63 | } |
| 64 | |
Ewout van Bekkum | 4b5ad7d | 2021-11-23 15:56:23 -0800 | [diff] [blame] | 65 | TEST(Sleep, SleepForNegativeDuration) { |
| 66 | // Ensure we are in a thread context, meaning we are permitted to sleep. |
| 67 | ASSERT_NE(get_id(), thread::Id()); |
| 68 | |
| 69 | // Ensure it doesn't sleep when a negative duration is used. |
| 70 | SystemClock::time_point before = SystemClock::now(); |
| 71 | sleep_for(-kRoundedArbitraryDuration); |
| 72 | SystemClock::duration time_elapsed = SystemClock::now() - before; |
| 73 | EXPECT_LT(time_elapsed, kRoundedArbitraryDuration); |
| 74 | } |
| 75 | |
| 76 | TEST(Sleep, SleepUntilFutureWakeupTime) { |
Ewout van Bekkum | e3b5603 | 2020-12-22 12:00:18 -0800 | [diff] [blame] | 77 | // Ensure we are in a thread context, meaning we are permitted to sleep. |
| 78 | ASSERT_NE(get_id(), thread::Id()); |
| 79 | |
Ewout van Bekkum | b34a154 | 2021-11-05 10:42:17 -0700 | [diff] [blame] | 80 | SystemClock::time_point deadline = |
Ewout van Bekkum | e3b5603 | 2020-12-22 12:00:18 -0800 | [diff] [blame] | 81 | SystemClock::now() + kRoundedArbitraryDuration; |
| 82 | sleep_until(deadline); |
| 83 | EXPECT_GE(SystemClock::now(), deadline); |
Ewout van Bekkum | 4b5ad7d | 2021-11-23 15:56:23 -0800 | [diff] [blame] | 84 | } |
| 85 | |
| 86 | TEST(Sleep, SleepUntilCurrentWakeupTime) { |
| 87 | // Ensure we are in a thread context, meaning we are permitted to sleep. |
| 88 | ASSERT_NE(get_id(), thread::Id()); |
Ewout van Bekkum | b34a154 | 2021-11-05 10:42:17 -0700 | [diff] [blame] | 89 | |
| 90 | // Ensure it doesn't sleep when now is used. |
Ewout van Bekkum | 4b5ad7d | 2021-11-23 15:56:23 -0800 | [diff] [blame] | 91 | SystemClock::time_point deadline = |
| 92 | SystemClock::now() + kRoundedArbitraryDuration; |
Ewout van Bekkum | b34a154 | 2021-11-05 10:42:17 -0700 | [diff] [blame] | 93 | sleep_until(SystemClock::now()); |
| 94 | EXPECT_LT(SystemClock::now(), deadline); |
Ewout van Bekkum | 4b5ad7d | 2021-11-23 15:56:23 -0800 | [diff] [blame] | 95 | } |
| 96 | |
| 97 | TEST(Sleep, SleepUntilPastWakeupTime) { |
| 98 | // Ensure we are in a thread context, meaning we are permitted to sleep. |
| 99 | ASSERT_NE(get_id(), thread::Id()); |
Ewout van Bekkum | b34a154 | 2021-11-05 10:42:17 -0700 | [diff] [blame] | 100 | |
| 101 | // Ensure it doesn't sleep when a timestamp in the past is used. |
Ewout van Bekkum | 4b5ad7d | 2021-11-23 15:56:23 -0800 | [diff] [blame] | 102 | SystemClock::time_point deadline = |
| 103 | SystemClock::now() + kRoundedArbitraryDuration; |
Ewout van Bekkum | b34a154 | 2021-11-05 10:42:17 -0700 | [diff] [blame] | 104 | sleep_until(SystemClock::now() - kRoundedArbitraryDuration); |
| 105 | EXPECT_LT(SystemClock::now(), deadline); |
Ewout van Bekkum | e3b5603 | 2020-12-22 12:00:18 -0800 | [diff] [blame] | 106 | } |
| 107 | |
Ewout van Bekkum | 4b5ad7d | 2021-11-23 15:56:23 -0800 | [diff] [blame] | 108 | TEST(Sleep, SleepForPositiveDurationInC) { |
Ewout van Bekkum | e3b5603 | 2020-12-22 12:00:18 -0800 | [diff] [blame] | 109 | // Ensure we are in a thread context, meaning we are permitted to sleep. |
| 110 | ASSERT_NE(get_id(), thread::Id()); |
| 111 | |
| 112 | pw_chrono_SystemClock_TimePoint before = pw_chrono_SystemClock_Now(); |
| 113 | pw_this_thread_SleepFor(kRoundedArbitraryDurationInC); |
Ewout van Bekkum | 830d5d1 | 2021-01-28 18:58:03 -0800 | [diff] [blame] | 114 | pw_chrono_SystemClock_Duration time_elapsed = |
| 115 | pw_chrono_SystemClock_TimeElapsed(before, pw_chrono_SystemClock_Now()); |
| 116 | EXPECT_GE(time_elapsed.ticks, kRoundedArbitraryDurationInC.ticks); |
Ewout van Bekkum | 4b5ad7d | 2021-11-23 15:56:23 -0800 | [diff] [blame] | 117 | } |
| 118 | |
| 119 | TEST(Sleep, SleepForZeroLengthDurationInC) { |
| 120 | // Ensure we are in a thread context, meaning we are permitted to sleep. |
| 121 | ASSERT_NE(get_id(), thread::Id()); |
Ewout van Bekkum | b34a154 | 2021-11-05 10:42:17 -0700 | [diff] [blame] | 122 | |
| 123 | // Ensure it doesn't sleep when a zero length duration is used. |
Ewout van Bekkum | 4b5ad7d | 2021-11-23 15:56:23 -0800 | [diff] [blame] | 124 | pw_chrono_SystemClock_TimePoint before = pw_chrono_SystemClock_Now(); |
Ewout van Bekkum | b34a154 | 2021-11-05 10:42:17 -0700 | [diff] [blame] | 125 | pw_this_thread_SleepFor(PW_SYSTEM_CLOCK_MS(0)); |
Ewout van Bekkum | 4b5ad7d | 2021-11-23 15:56:23 -0800 | [diff] [blame] | 126 | pw_chrono_SystemClock_Duration time_elapsed = |
Ewout van Bekkum | b34a154 | 2021-11-05 10:42:17 -0700 | [diff] [blame] | 127 | pw_chrono_SystemClock_TimeElapsed(before, pw_chrono_SystemClock_Now()); |
| 128 | EXPECT_LT(time_elapsed.ticks, kRoundedArbitraryDurationInC.ticks); |
Ewout van Bekkum | e3b5603 | 2020-12-22 12:00:18 -0800 | [diff] [blame] | 129 | } |
| 130 | |
Ewout van Bekkum | 4b5ad7d | 2021-11-23 15:56:23 -0800 | [diff] [blame] | 131 | TEST(Sleep, SleepForNegativeDurationInC) { |
| 132 | // Ensure we are in a thread context, meaning we are permitted to sleep. |
| 133 | ASSERT_NE(get_id(), thread::Id()); |
| 134 | |
| 135 | // Ensure it doesn't sleep when a negative duration is used. |
| 136 | pw_chrono_SystemClock_TimePoint before = pw_chrono_SystemClock_Now(); |
| 137 | pw_this_thread_SleepFor( |
| 138 | PW_SYSTEM_CLOCK_MS(-kRoundedArbitraryDurationInC.ticks)); |
| 139 | pw_chrono_SystemClock_Duration time_elapsed = |
| 140 | pw_chrono_SystemClock_TimeElapsed(before, pw_chrono_SystemClock_Now()); |
| 141 | EXPECT_LT(time_elapsed.ticks, kRoundedArbitraryDurationInC.ticks); |
| 142 | } |
| 143 | |
| 144 | TEST(Sleep, SleepUntilFutureWakeupTimeInC) { |
Ewout van Bekkum | e3b5603 | 2020-12-22 12:00:18 -0800 | [diff] [blame] | 145 | // Ensure we are in a thread context, meaning we are permitted to sleep. |
| 146 | ASSERT_NE(get_id(), thread::Id()); |
| 147 | |
| 148 | pw_chrono_SystemClock_TimePoint deadline; |
Ewout van Bekkum | 830d5d1 | 2021-01-28 18:58:03 -0800 | [diff] [blame] | 149 | deadline.duration_since_epoch.ticks = |
| 150 | pw_chrono_SystemClock_Now().duration_since_epoch.ticks + |
| 151 | kRoundedArbitraryDurationInC.ticks; |
Ewout van Bekkum | e3b5603 | 2020-12-22 12:00:18 -0800 | [diff] [blame] | 152 | pw_this_thread_CallSleepUntil(deadline); |
Ewout van Bekkum | 830d5d1 | 2021-01-28 18:58:03 -0800 | [diff] [blame] | 153 | EXPECT_GE(pw_chrono_SystemClock_Now().duration_since_epoch.ticks, |
| 154 | deadline.duration_since_epoch.ticks); |
Ewout van Bekkum | 4b5ad7d | 2021-11-23 15:56:23 -0800 | [diff] [blame] | 155 | } |
| 156 | |
| 157 | TEST(Sleep, SleepUntilCurrentWakeupTimeInC) { |
| 158 | // Ensure we are in a thread context, meaning we are permitted to sleep. |
| 159 | ASSERT_NE(get_id(), thread::Id()); |
Ewout van Bekkum | b34a154 | 2021-11-05 10:42:17 -0700 | [diff] [blame] | 160 | |
| 161 | // Ensure it doesn't sleep when now is used. |
Ewout van Bekkum | 4b5ad7d | 2021-11-23 15:56:23 -0800 | [diff] [blame] | 162 | pw_chrono_SystemClock_TimePoint deadline; |
Ewout van Bekkum | b34a154 | 2021-11-05 10:42:17 -0700 | [diff] [blame] | 163 | deadline.duration_since_epoch.ticks = |
| 164 | pw_chrono_SystemClock_Now().duration_since_epoch.ticks + |
| 165 | kRoundedArbitraryDurationInC.ticks; |
| 166 | pw_this_thread_CallSleepUntil(pw_chrono_SystemClock_Now()); |
| 167 | EXPECT_LT(pw_chrono_SystemClock_Now().duration_since_epoch.ticks, |
| 168 | deadline.duration_since_epoch.ticks); |
Ewout van Bekkum | 4b5ad7d | 2021-11-23 15:56:23 -0800 | [diff] [blame] | 169 | } |
| 170 | |
| 171 | TEST(Sleep, SleepUntilPastWakeupTimeInC) { |
| 172 | // Ensure we are in a thread context, meaning we are permitted to sleep. |
| 173 | ASSERT_NE(get_id(), thread::Id()); |
Ewout van Bekkum | b34a154 | 2021-11-05 10:42:17 -0700 | [diff] [blame] | 174 | |
| 175 | // Ensure it doesn't sleep when a timestamp in the past is used. |
Ewout van Bekkum | 4b5ad7d | 2021-11-23 15:56:23 -0800 | [diff] [blame] | 176 | pw_chrono_SystemClock_TimePoint deadline; |
Ewout van Bekkum | b34a154 | 2021-11-05 10:42:17 -0700 | [diff] [blame] | 177 | deadline.duration_since_epoch.ticks = |
| 178 | pw_chrono_SystemClock_Now().duration_since_epoch.ticks + |
| 179 | kRoundedArbitraryDurationInC.ticks; |
| 180 | pw_chrono_SystemClock_TimePoint old_timestamp; |
| 181 | old_timestamp.duration_since_epoch.ticks = |
| 182 | pw_chrono_SystemClock_Now().duration_since_epoch.ticks - |
| 183 | kRoundedArbitraryDurationInC.ticks; |
| 184 | pw_this_thread_CallSleepUntil(old_timestamp); |
| 185 | EXPECT_LT(pw_chrono_SystemClock_Now().duration_since_epoch.ticks, |
| 186 | deadline.duration_since_epoch.ticks); |
Ewout van Bekkum | e3b5603 | 2020-12-22 12:00:18 -0800 | [diff] [blame] | 187 | } |
| 188 | |
| 189 | } // namespace |
| 190 | } // namespace pw::this_thread |