Name

• PAPI_query_event - query if PAPI event exists

Synopsis

C Interface

#include <papi.h>
int PAPI_query_event(int  EventCode );

Fortran Interface

#include fpapi.h
PAPIF_query_event(C_INT  EventCode,  C_INT  check )

Description

PAPI_query_event() asks the PAPI library if the PAPI Preset event can be counted on this architecture. If the event CAN be counted, the function returns PAPI_OK. If the event CANNOT be counted, the function returns an error code. This function also can be used to check the syntax of a native event.

Arguments

EventCode -- a defined event such as PAPI_TOT_INS.

Errors

PAPI_EINVAL One or more of the arguments is invalid.

PAPI_ENOTPRESET The hardware event specified is not a valid PAPI preset.

PAPI_ENOEVNT The PAPI preset is not available on the underlying hardware.

Examples

int retval;
/* Initialize the library */
retval = PAPI_library_init(PAPI_VER_CURRENT);
if (retval != PAPI_VER_CURRENT) {
fprintf(stderr,"PAPI library init error!\\n");
exit(1); }
if (PAPI_query_event(PAPI_TOT_INS) != PAPI_OK) {
fprintf(stderr,"No instruction counter? How lame.\\n");
exit(1);
}

Bugs

These functions have no known bugs.

See Also

PAPI_remove_events(3), PAPI_remove_event(3), PAPI_preset(3), PAPI_native(3)