NAME

       PAPI_accum -

       Accumulate and reset counters in an EventSet.

SYNOPSIS

Detailed Description

       C Interface:
           #include <papi.h>
           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.

       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_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 event set specified does not exist.

       Examples:

           do_100events( );
           if ( PAPI_read( EventSet, values) != PAPI_OK )
           handle_error( 1 );
           // values[0] now equals 100
           do_100events( );
           if (PAPI_accum( EventSet, values ) != PAPI_OK )
           handle_error( 1 );
           // values[0] now equals 200
           values[0] = -100;
           do_100events( );
           if (PAPI_accum( EventSet, values ) != PAPI_OK )
           handle_error( 1 );
           // values[0] now equals 0

       See Also:
           PAPIF_accum

           PAPI_start

           PAPI_set_opt

           PAPI_reset

Author

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