PAPI_stop Class Reference

Stop counting hardware events in an event set. More...

Detailed Description

C Interface:

#include <papi.h>
int PAPI_stop( int EventSet, long long * values );

Parameters

EventSet	– an integer handle for a PAPI event set as created by PAPI_create_eventset
values	– an array to hold the counter values of the counting events

Return values

PAPI_OK
PAPI_EINVAL	One or more of the arguments is invalid.
PAPI_ESYS	A system or C library call failed inside PAPI, see the errno variable.
PAPI_ENOEVST	The EventSet specified does not exist.
PAPI_ENOTRUN	The EventSet is currently not running.

PAPI_stop halts the counting of a previously defined event set and the counter values contained in that EventSet are copied into the values array Assumes an initialized PAPI library and a properly added event set.

Example:

int EventSet = PAPI_NULL;
long long values[2];
int ret;
 
ret = PAPI_create_eventset(&EventSet);
if (ret != PAPI_OK) handle_error(ret);
 
// Add Total Instructions Executed to our EventSet
ret = PAPI_add_event(EventSet, PAPI_TOT_INS);
if (ret != PAPI_OK) handle_error(ret);
 
// Start counting
ret = PAPI_start(EventSet);
if (ret != PAPI_OK) handle_error(ret);
poorly_tuned_function();
ret = PAPI_stop(EventSet, values);
if (ret != PAPI_OK) handle_error(ret);
printf("%lld\\n",values[0]);

See also

PAPI_create_eventset PAPI_start

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The documentation for this class was generated from the following file:

• papi.c