| 1 | // SPDX-FileCopyrightText: 2023 Olivier Dion <odion@efficios.com> |
| 2 | // |
| 3 | // SPDX-License-Identifier: GPL-2.0-or-later |
| 4 | |
| 5 | /* Common states for benchmarks. */ |
| 6 | |
| 7 | #include <unistd.h> |
| 8 | |
| 9 | #include <urcu/uatomic.h> |
| 10 | |
| 11 | extern volatile int _test_go, _test_stop; |
| 12 | |
| 13 | static inline void complete_sleep(unsigned int seconds) |
| 14 | { |
| 15 | while (seconds != 0) { |
| 16 | seconds = sleep(seconds); |
| 17 | } |
| 18 | } |
| 19 | |
| 20 | static inline void begin_test(void) |
| 21 | { |
| 22 | uatomic_store(&_test_go, 1, CMM_RELEASE); |
| 23 | } |
| 24 | |
| 25 | static inline void end_test(void) |
| 26 | { |
| 27 | uatomic_store(&_test_stop, 1, CMM_RELAXED); |
| 28 | } |
| 29 | |
| 30 | static inline void test_for(unsigned int duration) |
| 31 | { |
| 32 | begin_test(); |
| 33 | complete_sleep(duration); |
| 34 | end_test(); |
| 35 | } |
| 36 | |
| 37 | static inline void wait_until_go(void) |
| 38 | { |
| 39 | while (!uatomic_load(&_test_go, CMM_ACQUIRE)) |
| 40 | { |
| 41 | } |
| 42 | } |
| 43 | |
| 44 | /* |
| 45 | * returns 0 if test should end. |
| 46 | */ |
| 47 | static inline int test_duration_write(void) |
| 48 | { |
| 49 | return !uatomic_load(&_test_stop, CMM_RELAXED); |
| 50 | } |
| 51 | |
| 52 | static inline int test_duration_read(void) |
| 53 | { |
| 54 | return !uatomic_load(&_test_stop, CMM_RELAXED); |
| 55 | } |