papi_component_avail.c

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "papi.h"

#include "print_header.h"

#define EVT_LINE 80

typedef struct command_flags
{
    int help;
    int details;
    int named;
    char *name;
} command_flags_t;

static void
print_help( char **argv )
{
    printf( "This is the PAPI component avail program.\n" );
    printf( "It provides availability of installed PAPI components.\n" );
    printf( "Usage: %s [options]\n", argv[0] );
    printf( "Options:\n\n" );
    printf( "  --help, -h    print this help message\n" );
    printf( "  -d            print detailed information on each component\n" );
}

static void
parse_args( int argc, char **argv, command_flags_t * f )
{
    int i;

    /* Look for all currently defined commands */
    memset( f, 0, sizeof ( command_flags_t ) );
    for ( i = 1; i < argc; i++ ) {
        if ( !strcmp( argv[i], "-d" ) ) {
            f->details = 1;
        } else if ( !strcmp( argv[i], "-h" ) || !strcmp( argv[i], "--help" ) )
            f->help = 1;
        else
            printf( "%s is not supported\n", argv[i] );
    }

    /* if help requested, print and bail */
    if ( f->help ) {
        print_help( argv );
        exit( 1 );
    }

}

int
main( int argc, char **argv )
{
    int i;
    int retval;
    const PAPI_hw_info_t *hwinfo = NULL;
    const PAPI_component_info_t* cmpinfo;
    command_flags_t flags;
    int numcmp, cid;

    /* Initialize before parsing the input arguments */
    retval = PAPI_library_init( PAPI_VER_CURRENT );
    if ( retval != PAPI_VER_CURRENT ) {
        fprintf(stderr,"Error!  PAPI_library_init\n");
        return retval;
    }

    parse_args( argc, argv, &flags );

    retval = PAPI_set_debug( PAPI_VERB_ECONT );
    if ( retval != PAPI_OK ) {
        fprintf(stderr,"Error!  PAPI_set_debug\n");
        return retval;
    }

    retval = papi_print_header( "Available components and "
                    "hardware information.\n", &hwinfo );
    if ( retval != PAPI_OK ) {
        fprintf(stderr,"Error! PAPI_get_ahrdware_info\n");
        return 2;
    }

    /* Compiled-in Components */
    numcmp = PAPI_num_components(  );

    printf("Compiled-in components:\n");
    for ( cid = 0; cid < numcmp; cid++ ) {
      cmpinfo = PAPI_get_component_info( cid );

      printf( "Name:   %-23s %s\n", cmpinfo->name ,cmpinfo->description);

      if (cmpinfo->disabled) {
        printf("   \\-> Disabled: %s\n",cmpinfo->disabled_reason);
      }

      if ( flags.details ) {
        printf( "        %-23s Version:\t\t\t%s\n", " ", cmpinfo->version );
        printf( "        %-23s Number of native events:\t%d\n", " ", cmpinfo->num_native_events);
        printf( "        %-23s Number of preset events:\t%d\n", " ", cmpinfo->num_preset_events);
        printf("\n");
      }
    }

    printf("\nActive components:\n");
    numcmp = PAPI_num_components(  );

    for ( cid = 0; cid < numcmp; cid++ ) {
      cmpinfo = PAPI_get_component_info( cid );
      if (cmpinfo->disabled) continue;

      printf( "Name:   %-23s %s\n", cmpinfo->name ,cmpinfo->description);
      printf( "        %-23s Native: %d, Preset: %d, Counters: %d\n",
          " ", cmpinfo->num_native_events, cmpinfo->num_preset_events, cmpinfo->num_cntrs);
      printf( "        %-23s PMUs supported: ", " ");
      int line_len = 49;
      for (i=0 ; i<PAPI_PMU_MAX ; i++) {
          if (cmpinfo->pmu_names[i] == NULL) continue;

          if (line_len + strlen(cmpinfo->pmu_names[i]) > 130) {
              printf("\n        %-23s                  ", " ");
              line_len = 49;
          } else {
              line_len += strlen(cmpinfo->pmu_names[i]);
          }
          // if it is not the first entry on a line, separate the names
          if ((i != 0) && (line_len > 50)) {
              printf(", ");
          }
          printf("%s", cmpinfo->pmu_names[i]);
      }
      printf("\n\n");

      if ( flags.details ) {
        printf( "        %-23s Version:\t\t\t%s\n", " ", cmpinfo->version );
        printf( "        %-23s Fast counter read:\t\t%d\n", " ", cmpinfo->fast_counter_read);
        printf("\n");
      }
    }


    printf
      ( "\n--------------------------------------------------------------------------------\n" );

    return 0;
}