Add a mechanism for cancelling begin/end perf counters.

This commit is contained in:
px4dev
2013-07-05 22:53:57 -07:00
parent 3c8c596ac7
commit 6871d2909b
2 changed files with 47 additions and 8 deletions
+13 -1
View File
@@ -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
*