papi_command_line.c

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/* file papi_command_line.c
 * This simply tries to add the events listed on the command line one at a time
 * then starts and stops the counters and prints the results
*/

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

#include "papi.h"
#include "do_loops.h"

static void
print_help( char **argv )
{
    printf( "Usage: %s [options] [EVENTNAMEs]\n", argv[0] );
    printf( "Options:\n\n" );
    printf( "General command options:\n" );
    printf( "\t-u          Display output values as unsigned integers\n" );
    printf( "\t-x          Display output values as hexadecimal\n" );
    printf( "\t-h          Print this help message\n" );
    printf( "\tEVENTNAMEs  Specify one or more preset or native events\n" );
    printf( "\n" );
    printf( "This utility performs work while measuring the specified events.\n" );
    printf( "It can be useful for sanity checks on given events and sets of events.\n" );
}


int
main( int argc, char **argv )
{
    int retval;
    int num_events;
    long long *values;
    char *success;
    PAPI_event_info_t info;
    int EventSet = PAPI_NULL;
    int i, j, event, data_type = PAPI_DATATYPE_INT64;
    int u_format = 0;
    int hex_format = 0;

    printf( "\nThis utility lets you add events from the command line "
        "interface to see if they work.\n\n" );

    retval = PAPI_library_init( PAPI_VER_CURRENT );
    if (retval != PAPI_VER_CURRENT ) {
        fprintf(stderr,"Error! PAPI_library_init\n");
        exit(retval );
    }

    retval = PAPI_create_eventset( &EventSet );
    if (retval != PAPI_OK ) {
        fprintf(stderr,"Error! PAPI_create_eventset\n");
        exit(retval );
    }

    values =
        ( long long * ) malloc( sizeof ( long long ) * ( size_t ) argc );
    success = ( char * ) malloc( ( size_t ) argc );

    if ( success == NULL || values == NULL ) {
        fprintf(stderr,"Error allocating memory!\n");
        exit(1);
    }

    for ( num_events = 0, i = 1; i < argc; i++ ) {
        if ( !strcmp( argv[i], "-h" ) ) {
            print_help( argv );
            exit( 1 );
        } else if ( !strcmp( argv[i], "-u" ) ) {
            u_format = 1;
        } else if ( !strcmp( argv[i], "-x" ) ) {
            hex_format = 1;
        } else {
            if ( ( retval = PAPI_add_named_event( EventSet, argv[i] ) ) != PAPI_OK ) {
                printf( "Failed adding: %s\nbecause: %s\n", argv[i], 
                    PAPI_strerror(retval));
            } else {
                success[num_events++] = i;
                printf( "Successfully added: %s\n", argv[i] );
            }
        }
    }

    /* Automatically pass if no events, for run_tests.sh */
    if ( num_events == 0 ) {
        printf("No events specified!\n");
        printf("Try running something like: %s PAPI_TOT_CYC\n\n",
            argv[0]);
        return 0;
    }


    printf( "\n" );

    do_flops( 1 );
    do_flush(  );

    retval = PAPI_start( EventSet );
    if (retval != PAPI_OK ) {
        fprintf(stderr,"Error! PAPI_start\n");
        exit( retval );
    }

    do_flops( NUM_FLOPS );
    do_misses( 1, L1_MISS_BUFFER_SIZE_INTS );

    retval = PAPI_stop( EventSet, values );
    if (retval != PAPI_OK ) {
        fprintf(stderr,"Error! PAPI_stop\n");
        exit( retval );
    }

    for ( j = 0; j < num_events; j++ ) {
        i = success[j];
        if (! (u_format || hex_format) ) {
            retval = PAPI_event_name_to_code( argv[i], &event );
            if (retval == PAPI_OK) {
                retval = PAPI_get_event_info(event, &info);
                if (retval == PAPI_OK) data_type = info.data_type;
                else data_type = PAPI_DATATYPE_INT64;
            }
            switch (data_type) {
              case PAPI_DATATYPE_UINT64:
                printf( "%s : \t%llu(u)", argv[i], (unsigned long long)values[j] );
                break;
              case PAPI_DATATYPE_FP64:
                printf( "%s : \t%0.3f", argv[i], *((double *)(&values[j])) );
                break;
              case PAPI_DATATYPE_BIT64:
                printf( "%s : \t%#llX", argv[i], values[j] );
                break;
              case PAPI_DATATYPE_INT64:
              default:
                printf( "%s : \t%lld", argv[i], values[j] );
                break;
            }
            if (retval == PAPI_OK)  printf( " %s", info.units );
            printf( "\n" );
        }
        if (u_format) printf( "%s : \t%llu(u)\n", argv[i], (unsigned long long)values[j] );
        if (hex_format) printf( "%s : \t%#llX\n", argv[i], values[j] );
    }

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

    return 0;

}