NAME

PAPI_num_hwctrs - return the number of hardware counters

CONTENTS

Synopsis
Description
Arguments
Return Values
Examples
Bugs
See Also

SYNOPSIS

C Interface

#include <papi.h> 

int PAPI_num_hwctrs(); 

Fortran Interface

#include fpapi.h 

PAPIF_num_hwctrs(C_INT num) 

DESCRIPTION

PAPI_num_hwctrs() returns the number of physical hardware counters present in the processor. This count does not include any special purpose registers or performance hardware. PAPI_library_init (3) must be called in order for this function to return anything greater than 0.

ARGUMENTS

This function takes no arguments.

RETURN VALUES

On success, this function returns a value greater than zero.

A zero result usually means the library has not been initialized.

EXAMPLES


/* Query the substrate for our resources. */
printf("%d hardware counters found.0, PAPI_num_hwctrs());


BUGS

None.

SEE ALSO

PAPI_init_library (3), PAPI (3), PAPI_F (3)


PAPI Programmer’s Reference PAPI_num_hwctrs (3) September, 2004

  Innovative Computing Laboratory
2001 R&D Winner  
Contact PAPI: papi@cs.utk.edu Computer Science Department
  University of Tennessee