All Data Structures Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
PAPI_accum Class Reference

Accumulate and reset counters in an EventSet. More...

Detailed Description

@par C Interface:
\#include <papi.h> @n
int PAPI_accum( int  EventSet, long_long * values );

These calls assume an initialized PAPI library and a properly added event set. 
PAPI_accum adds the counters of the indicated event set into the array values. 
The counters are zeroed and continue counting after the operation.
Note the differences between PAPI_read and PAPI_accum, specifically 
that PAPI_accum resets the values array to zero. 

@param EventSet
    an integer handle for a PAPI Event Set 
    as created by PAPI_create_eventset
@param *values 
    an array to hold the counter values of the counting events 

@retval PAPI_EINVAL 
    One or more of the arguments is invalid.
@retval PAPI_ESYS 
    A system or C library call failed inside PAPI, see the errno variable.
    The event set specified does not exist. 

@par Examples:
* do_100events( );
* handle_error( 1 );
* // values[0] now equals 100
* do_100events( );
* handle_error( 1 );
* // values[0] now equals 200
* values[0] = -100;
* do_100events( );
* handle_error( 1 );
* // values[0] now equals 0
See Also

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