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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2015-12-23 07:29:47 +0100 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2016-01-27 08:09:05 +0100 |
| commit | 2145853b009e939dfbe14869b710133f50500a26 (patch) | |
| tree | cb4504a3f442a83ea508a03b31aa8379b42790ed /cpukit/sapi | |
| parent | bsps/arm: Fix broken switch statement (diff) | |
| download | rtems-2145853b009e939dfbe14869b710133f50500a26.tar.bz2 | |
score: Fix simple timecounter support
Close #2502.
Diffstat (limited to 'cpukit/sapi')
| -rw-r--r-- | cpukit/sapi/include/rtems/timecounter.h | 35 |
1 files changed, 29 insertions, 6 deletions
diff --git a/cpukit/sapi/include/rtems/timecounter.h b/cpukit/sapi/include/rtems/timecounter.h index 04bc534d55..db0a7eee72 100644 --- a/cpukit/sapi/include/rtems/timecounter.h +++ b/cpukit/sapi/include/rtems/timecounter.h @@ -94,6 +94,13 @@ typedef struct { } rtems_timecounter_simple; /** + * @brief At tick handling done under protection of the timecounter lock. + */ +typedef void rtems_timecounter_simple_at_tick( + rtems_timecounter_simple *tc +); + +/** * @brief Returns the current value of a simple timecounter. */ typedef uint32_t rtems_timecounter_simple_get( @@ -199,20 +206,28 @@ RTEMS_INLINE_ROUTINE uint32_t rtems_timecounter_simple_scale( * * @param[in] tc The simple timecounter. * @param[in] get The method to get the value of the simple timecounter. + * @param[in] at_tick The method to perform work under timecounter lock + * protection at this tick, e.g. clear a pending flag. */ RTEMS_INLINE_ROUTINE void rtems_timecounter_simple_downcounter_tick( - rtems_timecounter_simple *tc, - rtems_timecounter_simple_get get + rtems_timecounter_simple *tc, + rtems_timecounter_simple_get get, + rtems_timecounter_simple_at_tick at_tick ) { + ISR_lock_Context lock_context; uint32_t current; + _Timecounter_Acquire( &lock_context ); + + ( *at_tick )( tc ); + current = rtems_timecounter_simple_scale( tc, tc->real_interval - ( *get )( tc ) ); - _Timecounter_Tick_simple( tc->binary_interval, current ); + _Timecounter_Tick_simple( tc->binary_interval, current, &lock_context ); } /** @@ -220,17 +235,25 @@ RTEMS_INLINE_ROUTINE void rtems_timecounter_simple_downcounter_tick( * * @param[in] tc The simple timecounter. * @param[in] get The method to get the value of the simple timecounter. + * @param[in] at_tick The method to perform work under timecounter lock + * protection at this tick, e.g. clear a pending flag. */ RTEMS_INLINE_ROUTINE void rtems_timecounter_simple_upcounter_tick( - rtems_timecounter_simple *tc, - rtems_timecounter_simple_get get + rtems_timecounter_simple *tc, + rtems_timecounter_simple_get get, + rtems_timecounter_simple_at_tick at_tick ) { + ISR_lock_Context lock_context; uint32_t current; + _Timecounter_Acquire( &lock_context ); + + ( *at_tick )( tc ); + current = rtems_timecounter_simple_scale( tc, ( *get )( tc ) ); - _Timecounter_Tick_simple( tc->binary_interval, current ); + _Timecounter_Tick_simple( tc->binary_interval, current, &lock_context ); } /** |