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PAPI_add_events(3) PAPI PAPI_add_events(3)


PAPI_add_events - add multiple PAPI presets or native hardware events to an event set


Detailed Description

C Interface:

#include <papi.h>
int PAPI_add_events( int EventSet, int * EventCodes, int number );

PAPI_add_event adds one event to a PAPI Event Set. PAPI_add_events does the same, but for an array of events.
A hardware event can be either a PAPI preset or a native hardware event code. For a list of PAPI preset events, see PAPI_presets or run the avail test case in the PAPI distribution. PAPI presets can be passed to PAPI_query_event to see if they exist on the underlying architecture. For a list of native events available on current platform, run native_avail test case in the PAPI distribution. For the encoding of native events, see PAPI_event_name_to_code to learn how to generate native code for the supported native event on the underlying architecture.


EventSet An integer handle for a PAPI Event Set as created by PAPI_create_eventset.
*EventCode An array of defined events.
number An integer indicating the number of events in the array *EventCode. It should be noted that PAPI_add_events can partially succeed, exactly like PAPI_remove_events.

Return values

Positive-Integer The number of consecutive elements that succeeded before the error.
PAPI_EINVAL One or more of the arguments is invalid.
PAPI_ENOMEM Insufficient memory to complete the operation.
PAPI_ENOEVST The event set specified does not exist.
PAPI_EISRUN The event set is currently counting events.
PAPI_ECNFLCT The underlying counter hardware can not count this event and other events in the event set simultaneously.
PAPI_ENOEVNT The PAPI preset is not available on the underlying hardware.
PAPI_EBUG Internal error, please send mail to the developers.


int EventSet = PAPI_NULL;
unsigned int native = 0x0;
if ( PAPI_create_eventset( &EventSet ) != PAPI_OK )
handle_error( 1 );
// Add Total Instructions Executed to our EventSet
if ( PAPI_add_event( EventSet, PAPI_TOT_INS ) != PAPI_OK )
handle_error( 1 );
// Add native event PM_CYC to EventSet
if ( PAPI_event_name_to_code( "PM_CYC", &native ) != PAPI_OK )
handle_error( 1 );
if ( PAPI_add_event( EventSet, native ) != PAPI_OK )
handle_error( 1 );

See also



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Thu Dec 14 2023 Version