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/*
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* File: overflow_index.c
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* Author: min@cs.utk.edu
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* Min Zhou
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*/
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/* This file performs the following test: overflow dispatch on 2 counters. */
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#include <stdio.h>
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#include <stdlib.h>
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#include "papi.h"
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#include "papi_test.h"
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#include "do_loops.h"
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#define OVER_FMT "handler(%d) Overflow at %p! vector=%#llx\n"
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#define OUT_FMT "%-12s : %16lld%16lld\n"
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#define INDEX_FMT "Overflows vector %#llx: \n"
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typedef struct
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{
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long long mask;
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int count;
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} ocount_t;
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/* there are three possible vectors, one counter overflows, the other
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counter overflows, both overflow */
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static ocount_t overflow_counts[3] = { {0, 0}, {0, 0}, {0, 0} };
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static int total_unknown = 0;
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static void
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handler( int EventSet, void *address, long long overflow_vector, void *context )
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{
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int i;
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( void ) context;
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if ( !TESTS_QUIET ) {
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fprintf( stderr, OVER_FMT, EventSet, address, overflow_vector );
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}
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/* Look for the overflow_vector entry */
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for ( i = 0; i < 3; i++ ) {
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if ( overflow_counts[i].mask == overflow_vector ) {
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overflow_counts[i].count++;
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return;
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}
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}
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/* Didn't find it so add it. */
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for ( i = 0; i < 3; i++ ) {
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if ( overflow_counts[i].mask == ( long long ) 0 ) {
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overflow_counts[i].mask = overflow_vector;
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overflow_counts[i].count = 1;
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return;
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}
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}
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/* Unknown entry!?! */
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total_unknown++;
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}
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int
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main( int argc, char **argv )
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{
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int EventSet = PAPI_NULL;
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long long ( values[3] )[2];
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int retval;
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int PAPI_event, k, i;
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char event_name[PAPI_MAX_STR_LEN];
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int index_array[2], number;
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int num_events1, mask1;
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int quiet;
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/* Set TESTS_QUIET variable */
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quiet = tests_quiet( argc, argv );
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retval = PAPI_library_init( PAPI_VER_CURRENT );
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if ( retval != PAPI_VER_CURRENT ) {
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test_fail( __FILE__, __LINE__, "PAPI_library_init", retval );
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}
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/* add PAPI_TOT_CYC and one of the events in PAPI_FP_INS, PAPI_FP_OPS or
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PAPI_TOT_INS, depends on the availability of the event on the
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platform */
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EventSet = add_two_nonderived_events( &num_events1, &PAPI_event, &mask1 );
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if (num_events1==0) {
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if (!quiet) printf("Trouble adding events\n");
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test_skip(__FILE__,__LINE__,"Adding events",0);
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}
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retval = PAPI_start( EventSet );
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if ( retval != PAPI_OK )
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test_fail( __FILE__, __LINE__, "PAPI_start", retval );
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do_flops( NUM_FLOPS );
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retval = PAPI_stop( EventSet, values[0] );
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if ( retval != PAPI_OK )
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test_fail( __FILE__, __LINE__, "PAPI_stop", retval );
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retval = PAPI_overflow( EventSet, PAPI_event, THRESHOLD, 0, handler );
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if ( retval != PAPI_OK )
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test_fail( __FILE__, __LINE__, "PAPI_overflow", retval );
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retval = PAPI_overflow( EventSet, PAPI_TOT_CYC, THRESHOLD, 0, handler );
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if ( retval != PAPI_OK )
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test_fail( __FILE__, __LINE__, "PAPI_overflow", retval );
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retval = PAPI_start( EventSet );
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if ( retval != PAPI_OK )
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test_fail( __FILE__, __LINE__, "PAPI_start", retval );
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do_flops( NUM_FLOPS );
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retval = PAPI_stop( EventSet, values[1] );
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if ( retval != PAPI_OK )
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test_fail( __FILE__, __LINE__, "PAPI_stop", retval );
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retval = PAPI_event_code_to_name( PAPI_event, event_name );
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if (retval != PAPI_OK ) {
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test_fail( __FILE__, __LINE__, "PAPI_event_code_to_name", retval );
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}
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if (!quiet) {
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printf( "Test case: Overflow dispatch of 2nd event in set with 2 events.\n" );
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printf( "---------------------------------------------------------------\n" );
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printf( "Threshold for overflow is: %d\n", THRESHOLD );
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printf( "Using %d iterations of c += a*b\n", NUM_FLOPS );
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printf( "-----------------------------------------------\n" );
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printf( "Test type : %16d%16d\n", 1, 2 );
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printf( OUT_FMT, "PAPI_TOT_CYC", ( values[0] )[0], ( values[1] )[0] );
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printf( OUT_FMT, event_name, ( values[0] )[1], ( values[1] )[1] );
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}
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if ( overflow_counts[0].count == 0 && overflow_counts[1].count == 0 ) {
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test_fail( __FILE__, __LINE__,
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"one counter had no overflows", 1 );
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}
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for ( k = 0; k < 3; k++ ) {
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if ( overflow_counts[k].mask ) {
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number = 2;
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retval = PAPI_get_overflow_event_index( EventSet,
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overflow_counts[k].mask,
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index_array, &number );
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if ( retval != PAPI_OK ) {
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test_fail( __FILE__, __LINE__,
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"PAPI_get_overflow_event_index", retval );
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}
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if (!quiet) {
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printf( INDEX_FMT, ( long long ) overflow_counts[k].mask );
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printf( " counts: %d ", overflow_counts[k].count );
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for ( i = 0; i < number; i++ )
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printf( " Event Index %d ", index_array[i] );
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printf( "\n" );
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}
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}
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}
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if (!quiet) {
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printf( "Case 2 %s Overflows: %d\n", "Unknown", total_unknown );
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printf( "-----------------------------------------------\n" );
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}
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if ( total_unknown > 0 ) {
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test_fail( __FILE__, __LINE__, "Unknown counter had overflows", 1 );
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}
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retval = PAPI_cleanup_eventset( EventSet );
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if ( retval != PAPI_OK ) {
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test_fail( __FILE__, __LINE__, "PAPI_stop", retval );
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}
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test_pass( __FILE__ );
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return 0;
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}
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