diff options
| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2017-06-29 14:36:26 +0200 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2017-06-29 14:36:58 +0200 |
| commit | 7f7a3e8f70c46a2a5a5ef120909c8211840ef5cb (patch) | |
| tree | 2614cd84957853a7b1c919c9bc304a5bfc65fbcb /cpukit/libmisc/testsupport/test.h | |
| parent | score: Add RTEMS_NO_INLINE (diff) | |
| download | rtems-7f7a3e8f70c46a2a5a5ef120909c8211840ef5cb.tar.bz2 | |
tests: Move busy loop to test support
Update #3056.
Diffstat (limited to 'cpukit/libmisc/testsupport/test.h')
| -rw-r--r-- | cpukit/libmisc/testsupport/test.h | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/cpukit/libmisc/testsupport/test.h b/cpukit/libmisc/testsupport/test.h index a32e2c42c1..d9ac6caf91 100644 --- a/cpukit/libmisc/testsupport/test.h +++ b/cpukit/libmisc/testsupport/test.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2014, 2016 embedded brains GmbH. All rights reserved. + * Copyright (c) 2014, 2017 embedded brains GmbH. All rights reserved. * * embedded brains GmbH * Dornierstr. 4 @@ -260,6 +260,22 @@ void rtems_test_parallel( size_t job_count ); +/** + * @brief Performs a busy loop with the specified iteration count. + * + * This function is optimized to not perform memory accesses and should have a + * small jitter. + * + * @param[in] count The iteration count. + */ +void rtems_test_busy(uint_fast32_t count); + +/** + * @brief Returns a count value for rtems_test_busy() which yields roughly a + * duration of one clock tick. + */ +uint_fast32_t rtems_test_get_one_tick_busy_count(void); + /** @} */ #ifdef __cplusplus |