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PAPI_read_counters
Langue: en
Version: September, 2004 (fedora - 01/12/10)
Section: 3 (Bibliothèques de fonctions)
NAME
PAPI_read_counters - PAPI High Level: read and reset countersPAPI_accum_counters - PAPI High Level: accumulate and reset counters
SYNOPSIS
C Interface#include <papi.h> int PAPI_read_counters(long_long *values, int array_len); int PAPI_accum_counters(long_long *values, int array_len);Fortran Interface
#include fpapi.h PAPIF_read_counters(C_LONG_LONG(*) values, C_INT array_len, C_INT check) PAPIF_accum_counters(C_LONG_LONG(*) values, C_INT array_len, C_INT check)
DESCRIPTION
PAPI_read_counters() copies the event counters into the array values .
The counters are reset and left running after the call.
PAPI_accum_counters() adds the event counters into the array values .
The counters are reset and left running after the call.
These calls assume an initialized PAPI library and a properly added event set.
ARGUMENTS
*values -- an array to hold the counter values of the counting eventsarray_len -- the number of items in the *events array
RETURN VALUES
On success, these functions return PAPI_OK.On error, a non-zero error code is returned.
ERRORS
- 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.
EXAMPLES
do_100events(); if (PAPI_read_counters(values, num_hwcntrs) != PAPI_OK) handle_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(1); /* values[0] now equals 0 */
BUGS
These functions have no known bugs.SEE ALSO
PAPI_start_counters(3), PAPI_set_opt(3), PAPI(3),PAPIF(3)Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre