| 1 | //===----------------------------------------------------------------------===// |
|---|
| 2 | // |
|---|
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
|---|
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
|---|
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
|---|
| 6 | // |
|---|
| 7 | //===----------------------------------------------------------------------===// |
|---|
| 8 | |
|---|
| 9 | #ifndef TEST_STD_THREAD_CONDITION_CONDVARANY_HELPERS_H |
|---|
| 10 | #define TEST_STD_THREAD_CONDITION_CONDVARANY_HELPERS_H |
|---|
| 11 | |
|---|
| 12 | #include <chrono> |
|---|
| 13 | #include <cassert> |
|---|
| 14 | |
|---|
| 15 | #include "test_macros.h" |
|---|
| 16 | |
|---|
| 17 | #if TEST_STD_VER >= 17 |
|---|
| 18 | |
|---|
| 19 | // wait_for and wait_until function can exit via |
|---|
| 20 | // - predicate is true |
|---|
| 21 | // - timeout |
|---|
| 22 | // - stop_requested |
|---|
| 23 | // The return value only tells if the predicate is true |
|---|
| 24 | // when the function exits, but it does not tell whether |
|---|
| 25 | // it is timeout or stop_requested. |
|---|
| 26 | // |
|---|
| 27 | // ElapsedTimeCheck would fail the test if a test takes |
|---|
| 28 | // longer than a duration. This is useful because we can |
|---|
| 29 | // ensure that the wait_{for, until} function does not |
|---|
| 30 | // wait until the timeout |
|---|
| 31 | struct ElapsedTimeCheck { |
|---|
| 32 | ElapsedTimeCheck(std::chrono::steady_clock::duration timeoutDuration) |
|---|
| 33 | : timeout_(std::chrono::steady_clock::now() + timeoutDuration) {} |
|---|
| 34 | |
|---|
| 35 | ElapsedTimeCheck(ElapsedTimeCheck&&) = delete; |
|---|
| 36 | ElapsedTimeCheck& operator=(ElapsedTimeCheck&&) = delete; |
|---|
| 37 | |
|---|
| 38 | ~ElapsedTimeCheck() { assert(std::chrono::steady_clock::now() < timeout_); } |
|---|
| 39 | |
|---|
| 40 | std::chrono::time_point<std::chrono::steady_clock> timeout_; |
|---|
| 41 | }; |
|---|
| 42 | |
|---|
| 43 | #endif |
|---|
| 44 | |
|---|
| 45 | #endif // TEST_STD_THREAD_CONDITION_CONDVARANY_HELPERS_H |
|---|
| 46 | |
|---|
