multiplex2.c

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/*
* File:    multiplex.c
* Author:  Philip Mucci
*          mucci@cs.utk.edu
*/

/* This file tests the multiplex functionality, originally developed by
   John May of LLNL. */

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

#include "papi.h"
#include "papi_test.h"

#include "do_loops.h"


/* Tests that we can really multiplex a lot. */

static int
case1( void )
{
    int retval, i, EventSet = PAPI_NULL, j = 0, k = 0, allvalid = 1;
    int max_mux, nev, *events;
    long long *values;
    PAPI_event_info_t pset;
    char evname[PAPI_MAX_STR_LEN];

    /* Initialize PAPI */

    retval = PAPI_library_init( PAPI_VER_CURRENT );
    if ( retval != PAPI_VER_CURRENT ) {
        test_fail( __FILE__, __LINE__, "PAPI_library_init", retval );
    }

    retval = PAPI_multiplex_init(  );
    if ( retval != PAPI_OK ) {
        test_fail( __FILE__, __LINE__, "PAPI multiplex init fail\n", retval );
    }

#if 0
    if ( PAPI_set_domain( PAPI_DOM_KERNEL ) != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_set_domain", retval );
#endif
    retval = PAPI_create_eventset( &EventSet );
    if ( retval != PAPI_OK ) {
        test_fail( __FILE__, __LINE__, "PAPI_create_eventset", retval );
    }

#if 0
    if ( PAPI_set_domain( PAPI_DOM_KERNEL ) != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_set_domain", retval );
#endif
    /* In Component PAPI, EventSets must be assigned a component index
       before you can fiddle with their internals.
       0 is always the cpu component */
    retval = PAPI_assign_eventset_component( EventSet, 0 );
    if ( retval != PAPI_OK ) {
        test_fail( __FILE__, __LINE__, "PAPI_assign_eventset_component",
                   retval );
    }
#if 0
    if ( PAPI_set_domain( PAPI_DOM_KERNEL ) != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_set_domain", retval );
#endif

    retval = PAPI_set_multiplex( EventSet );
        if ( retval == PAPI_ENOSUPP) {
       test_skip(__FILE__, __LINE__, "Multiplex not supported", 1);
    }
        else if ( retval != PAPI_OK ) {
        test_fail( __FILE__, __LINE__, "PAPI_set_multiplex", retval );
    }

    max_mux = PAPI_get_opt( PAPI_MAX_MPX_CTRS, NULL );
    if ( max_mux > 32 ) max_mux = 32;

#if 0
    if ( PAPI_set_domain( PAPI_DOM_KERNEL ) != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_set_domain", retval );
#endif

    /* Fill up the event set with as many non-derived events as we can */
    if (!TESTS_QUIET) {
        printf( "\nFilling the event set with as many non-derived events as we can...\n" );
    }

    i = PAPI_PRESET_MASK;
    do {
        if ( PAPI_get_event_info( i, &pset ) == PAPI_OK ) {
            if ( pset.count && ( strcmp( pset.derived, "NOT_DERIVED" ) == 0 ) ) {
                retval = PAPI_add_event( EventSet, ( int ) pset.event_code );
                if ( retval != PAPI_OK ) {
                   printf("Failed trying to add %s\n",pset.symbol);
                   break;
                }
                else {
                    if (!TESTS_QUIET) printf( "Added %s\n", pset.symbol );
                    j++;
                }
            }
        }
    } while ( ( PAPI_enum_event( &i, PAPI_PRESET_ENUM_AVAIL ) == PAPI_OK ) &&
              ( j < max_mux ) );

    if (j==0) {
        if (!TESTS_QUIET) printf("No events found\n");
        test_skip(__FILE__,__LINE__,"No events",0);
    }

    events = ( int * ) malloc( ( size_t ) j * sizeof ( int ) );
    if ( events == NULL )
        test_fail( __FILE__, __LINE__, "malloc events", 0 );

    values = ( long long * ) malloc( ( size_t ) j * sizeof ( long long ) );
    if ( values == NULL )
        test_fail( __FILE__, __LINE__, "malloc values", 0 );

    do_stuff(  );

#if 0
    if ( PAPI_set_domain( PAPI_DOM_KERNEL ) != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_set_domain", retval );
#endif

    if ( PAPI_start( EventSet ) != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_start", retval );

    do_stuff(  );

    retval = PAPI_stop( EventSet, values );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_stop", retval );

    nev = j;
    retval = PAPI_list_events( EventSet, events, &nev );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_list_events", retval );

    if (!TESTS_QUIET) printf( "\nEvent Counts:\n" );
    for ( i = 0, allvalid = 0; i < j; i++ ) {
        PAPI_event_code_to_name( events[i], evname );
        if (!TESTS_QUIET) printf( TAB1, evname, values[i] );
        if ( values[i] == 0 )
            allvalid++;
    }
    if (!TESTS_QUIET) {
        printf( "\n" );
        if ( allvalid ) {
            printf( "Caution: %d counters had zero values\n", allvalid );
        }
    }

        if (allvalid==j) {
       test_fail( __FILE__, __LINE__, "All counters returned zero", 5 );
    }

    for ( i = 0, allvalid = 0; i < j; i++ ) {
        for ( k = i + 1; k < j; k++ ) {
            if ( ( i != k ) && ( values[i] == values[k] ) ) {
                allvalid++;
                break;
            }
        }
    }

    if (!TESTS_QUIET) {
        if ( allvalid ) {
            printf( "Caution: %d counter pair(s) had identical values\n",
                allvalid );
        }
    }

    free( events );
    free( values );

    retval = PAPI_cleanup_eventset( EventSet );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_cleanup_eventset", retval );

    retval = PAPI_destroy_eventset( &EventSet );
    if ( retval != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_destroy_eventset", retval );

    return ( SUCCESS );
}

int
main( int argc, char **argv )
{
    int quiet;

    /* Set TESTS_QUIET variable */
    quiet = tests_quiet( argc, argv );

    if (!quiet) {
        printf( "%s: Does PAPI_multiplex_init() handle lots of events?\n",
                argv[0] );
        printf( "Using %d iterations\n", NUM_ITERS );
    }

    case1(  );
    test_pass( __FILE__ );

    return 0;
}