| // Copyright 2020 The Pigweed Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| // use this file except in compliance with the License. You may obtain a copy of |
| // the License at |
| // |
| // https://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| // License for the specific language governing permissions and limitations under |
| // the License. |
| |
| #include <chrono> |
| |
| #include "gtest/gtest.h" |
| #include "pw_chrono/system_clock.h" |
| #include "pw_thread/id.h" |
| #include "pw_thread/sleep.h" |
| |
| using pw::chrono::SystemClock; |
| |
| namespace pw::this_thread { |
| namespace { |
| |
| extern "C" { |
| |
| // Functions defined in sleep_facade_test_c.c which call the API from C. |
| void pw_this_thread_CallSleepFor(pw_chrono_SystemClock_TickCount for_at_least); |
| void pw_this_thread_CallSleepUntil( |
| pw_chrono_SystemClock_TimePoint until_at_least); |
| |
| } // extern "C" |
| |
| static constexpr auto kArbitraryDuration = std::chrono::milliseconds(42); |
| // We can't control the SystemClock's period configuration, so just in case |
| // duration cannot be accurately expressed in integer ticks, round the |
| // duration w/ duration_cast. |
| static constexpr auto kRoundedArbitraryDuration = |
| std::chrono::duration_cast<SystemClock::duration>(kArbitraryDuration); |
| static constexpr pw_chrono_SystemClock_TickCount kRoundedArbitraryDurationInC = |
| kRoundedArbitraryDuration.count(); |
| |
| TEST(Sleep, SleepFor) { |
| // Ensure we are in a thread context, meaning we are permitted to sleep. |
| ASSERT_NE(get_id(), thread::Id()); |
| |
| const SystemClock::time_point before = SystemClock::now(); |
| sleep_for(kRoundedArbitraryDuration); |
| const SystemClock::duration time_elapsed = SystemClock::now() - before; |
| EXPECT_GE(time_elapsed, kRoundedArbitraryDuration); |
| } |
| |
| TEST(Sleep, SleepUntil) { |
| // Ensure we are in a thread context, meaning we are permitted to sleep. |
| ASSERT_NE(get_id(), thread::Id()); |
| |
| const SystemClock::time_point deadline = |
| SystemClock::now() + kRoundedArbitraryDuration; |
| sleep_until(deadline); |
| EXPECT_GE(SystemClock::now(), deadline); |
| } |
| |
| TEST(Sleep, SleepForInC) { |
| // Ensure we are in a thread context, meaning we are permitted to sleep. |
| ASSERT_NE(get_id(), thread::Id()); |
| |
| pw_chrono_SystemClock_TimePoint before = pw_chrono_SystemClock_Now(); |
| pw_this_thread_SleepFor(kRoundedArbitraryDurationInC); |
| pw_chrono_SystemClock_TickCount time_elapsed = |
| pw_chrono_SystemClock_Now().ticks_since_epoch - before.ticks_since_epoch; |
| EXPECT_GE(time_elapsed, kRoundedArbitraryDurationInC); |
| } |
| |
| TEST(Sleep, SleepUntilInC) { |
| // Ensure we are in a thread context, meaning we are permitted to sleep. |
| ASSERT_NE(get_id(), thread::Id()); |
| |
| pw_chrono_SystemClock_TimePoint deadline; |
| deadline.ticks_since_epoch = pw_chrono_SystemClock_Now().ticks_since_epoch + |
| kRoundedArbitraryDurationInC; |
| pw_this_thread_CallSleepUntil(deadline); |
| EXPECT_GE(pw_chrono_SystemClock_Now().ticks_since_epoch, |
| deadline.ticks_since_epoch); |
| } |
| |
| } // namespace |
| } // namespace pw::this_thread |