table of contents
| PAPI_accum_counters(3) | PAPI | PAPI_accum_counters(3) |
NAME¶
PAPI_accum_counters -
Accumulate and reset counters.
SYNOPSIS¶
Detailed Description¶
@par C Interface: int PAPI_accum_counters( long long *values, int array_len );
Parameters:
*values an array to hold the counter values of the
counting events
arry_len the number of items in the *events array
arry_len the number of items in the *events array
Precondition:
These calls assume an initialized PAPI library and a
properly added event set.
Postcondition:
The counters are reset and left running after the
call.
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_ESYS A system or C library call failed inside PAPI, see the errno variable.
PAPI_accum_counters() adds the event counters into the array *values.
do_100events(); if ( PAPI_read_counters( values, num_hwcntrs ) != PAPI_OK )
handlw_error(1); // values[0] now equals 100 do_100events(); if ( PAPI_accum_counters( values, num_hwcntrs ) != PAPI_OK )
handle_error(1); // values[0] now equals 200 values[0] = -100; do_100events(); if ( PAPI_accum_counters(values, num_hwcntrs ) != PAPI_OK )
handle_error(); // values[0] now equals 0
*
See Also:
PAPI_set_opt() PAPI_start_counters()
Author¶
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| Wed Oct 31 2018 | Version 5.2.0.0 |