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author | px4dev <px4@purgatory.org> | 2013-07-05 22:53:57 -0700 |
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committer | px4dev <px4@purgatory.org> | 2013-07-05 22:53:57 -0700 |
commit | 6871d2909b5be7eb93bf23aea771a86aa1b0ae3f (patch) | |
tree | bcbc21d87ec3bcf020e27442e4c9110bf476fab1 /src/modules/systemlib/perf_counter.h | |
parent | 3c8c596ac7a2eacc3f4ac047a58bd5dceb36a203 (diff) | |
download | px4-firmware-6871d2909b5be7eb93bf23aea771a86aa1b0ae3f.tar.gz px4-firmware-6871d2909b5be7eb93bf23aea771a86aa1b0ae3f.tar.bz2 px4-firmware-6871d2909b5be7eb93bf23aea771a86aa1b0ae3f.zip |
Add a mechanism for cancelling begin/end perf counters.
Diffstat (limited to 'src/modules/systemlib/perf_counter.h')
-rw-r--r-- | src/modules/systemlib/perf_counter.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/src/modules/systemlib/perf_counter.h b/src/modules/systemlib/perf_counter.h index 5c2cb15b2..4cd8b67a1 100644 --- a/src/modules/systemlib/perf_counter.h +++ b/src/modules/systemlib/perf_counter.h @@ -92,13 +92,25 @@ __EXPORT extern void perf_begin(perf_counter_t handle); * End a performance event. * * This call applies to counters that operate over ranges of time; PC_ELAPSED etc. + * If a call is made without a corresopnding perf_begin call, or if perf_cancel + * has been called subsequently, no change is made to the counter. * * @param handle The handle returned from perf_alloc. */ __EXPORT extern void perf_end(perf_counter_t handle); /** - * Reset a performance event. + * Cancel a performance event. + * + * This call applies to counters that operate over ranges of time; PC_ELAPSED etc. + * It reverts the effect of a previous perf_begin. + * + * @param handle The handle returned from perf_alloc. + */ +__EXPORT extern void perf_cancel(perf_counter_t handle); + +/** + * Reset a performance counter. * * This call resets performance counter to initial state * |