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/*
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* File: overflow_force_software.c
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* Author: Kevin London
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* london@cs.utk.edu
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* Mods: Maynard Johnson
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* maynardj@us.ibm.com
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* Philip Mucci
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* mucci@cs.utk.edu
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* Haihang You
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* you@cs.utk.edu
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* <your name here>
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* <your email address>
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*/
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/* This file performs the following test: overflow dispatch of an eventset
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with just a single event. Using both Hardware and software overflows
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The Eventset contains:
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+ PAPI_FP_INS (overflow monitor)
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- Start eventset 1
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- Do flops
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- Stop and measure eventset 1
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- Set up overflow on eventset 1
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- Start eventset 1
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- Do flops
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- Stop eventset 1
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- Set up forced software overflow on eventset 1
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- Start eventset 1
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- Do flops
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- Stop eventset 1
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/time.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 overflow_vector=%#llx!\n"
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#define OUT_FMT "%-12s : %16lld%16d%16lld\n"
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#define SOFT_TOLERANCE 0.90
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#define MY_NUM_TESTS 5
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static int total[MY_NUM_TESTS] = { 0, }; /* total overflows */
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static int use_total = 0; /* which total field to bump */
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static long long values[MY_NUM_TESTS] = { 0, };
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void
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handler( int EventSet, void *address, long long overflow_vector, void *context )
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{
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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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total[use_total]++;
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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 hard_min, hard_max, soft_min, soft_max;
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int retval;
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int PAPI_event = 0, mythreshold;
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char event_name[PAPI_MAX_STR_LEN];
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PAPI_option_t opt;
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PAPI_event_info_t info;
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PAPI_option_t itimer;
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const PAPI_hw_info_t *hw_info = NULL;
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tests_quiet( argc, argv ); /* Set TESTS_QUIET variable */
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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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/* query and set up the right instruction to monitor */
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if ( PAPI_query_event( PAPI_FP_INS ) == PAPI_OK ) {
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if ( PAPI_query_event( PAPI_FP_INS ) == PAPI_OK ) {
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PAPI_get_event_info( PAPI_FP_INS, &info );
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if ( info.count == 1 ||
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!strcmp( info.derived, "DERIVED_CMPD" ) )
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PAPI_event = PAPI_FP_INS;
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}
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}
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if ( PAPI_event == 0 ) {
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if ( PAPI_query_event( PAPI_FP_OPS ) == PAPI_OK ) {
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PAPI_get_event_info( PAPI_FP_OPS, &info );
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if ( info.count == 1 ||
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!strcmp( info.derived, "DERIVED_CMPD" ) )
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PAPI_event = PAPI_FP_OPS;
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}
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}
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if ( PAPI_event == 0 ) {
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if ( PAPI_query_event( PAPI_TOT_INS ) == PAPI_OK ) {
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PAPI_get_event_info( PAPI_TOT_INS, &info );
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if ( info.count == 1 ||
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!strcmp( info.derived, "DERIVED_CMPD" ) )
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PAPI_event = PAPI_TOT_INS;
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}
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}
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if ( PAPI_event == 0 )
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test_skip( __FILE__, __LINE__, "No suitable event for this test found!",
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0 );
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hw_info = PAPI_get_hardware_info( );
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if ( hw_info == NULL )
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test_fail( __FILE__, __LINE__, "PAPI_get_hardware_info", 2 );
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if ( PAPI_event == PAPI_FP_INS )
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mythreshold = THRESHOLD;
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else
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#if defined(linux)
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mythreshold = ( int ) hw_info->cpu_max_mhz * 20000;
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#else
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mythreshold = THRESHOLD * 2;
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#endif
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retval = PAPI_create_eventset( &EventSet );
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if ( retval != PAPI_OK )
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test_fail( __FILE__, __LINE__, "PAPI_create_eventset", retval );
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retval = PAPI_add_event( EventSet, PAPI_event );
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if ( retval != PAPI_OK )
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test_fail( __FILE__, __LINE__, "PAPI_add_event", retval );
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retval = PAPI_get_opt( PAPI_COMPONENTINFO, &opt );
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if ( retval != PAPI_OK )
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test_skip( __FILE__, __LINE__,
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"Platform does not support Hardware overflow", 0 );
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do_stuff( );
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/* Do reference count */
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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_stuff( );
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retval = PAPI_stop( EventSet, &values[use_total] );
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if ( retval != PAPI_OK )
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test_fail( __FILE__, __LINE__, "PAPI_stop", retval );
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use_total++;
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/* Now do hardware overflow reference count */
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retval = PAPI_overflow( EventSet, PAPI_event, mythreshold, 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_stuff( );
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retval = PAPI_stop( EventSet, &values[use_total] );
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if ( retval != PAPI_OK )
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test_fail( __FILE__, __LINE__, "PAPI_stop", retval );
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use_total++;
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retval = PAPI_overflow( EventSet, PAPI_event, 0, 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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/* Now do software overflow reference count, uses SIGPROF */
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retval =
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PAPI_overflow( EventSet, PAPI_event, mythreshold,
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PAPI_OVERFLOW_FORCE_SW, 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_stuff( );
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retval = PAPI_stop( EventSet, &values[use_total] );
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if ( retval != PAPI_OK )
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test_fail( __FILE__, __LINE__, "PAPI_stop", retval );
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use_total++;
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retval =
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PAPI_overflow( EventSet, PAPI_event, 0, PAPI_OVERFLOW_FORCE_SW,
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handler );
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if ( retval != PAPI_OK )
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test_fail( __FILE__, __LINE__, "PAPI_overflow", retval );
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/* Now do software overflow with SIGVTALRM */
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memset( &itimer, 0, sizeof ( itimer ) );
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itimer.itimer.itimer_num = ITIMER_VIRTUAL;
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itimer.itimer.itimer_sig = SIGVTALRM;
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if ( PAPI_set_opt( PAPI_DEF_ITIMER, &itimer ) != PAPI_OK )
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test_fail( __FILE__, __LINE__, "PAPI_set_opt", retval );
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retval =
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PAPI_overflow( EventSet, PAPI_event, mythreshold,
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PAPI_OVERFLOW_FORCE_SW, 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_stuff( );
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retval = PAPI_stop( EventSet, &values[use_total] );
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if ( retval != PAPI_OK )
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test_fail( __FILE__, __LINE__, "PAPI_stop", retval );
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use_total++;
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retval =
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PAPI_overflow( EventSet, PAPI_event, 0, PAPI_OVERFLOW_FORCE_SW,
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handler );
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if ( retval != PAPI_OK )
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test_fail( __FILE__, __LINE__, "PAPI_overflow", retval );
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/* Now do software overflow with SIGALRM */
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memset( &itimer, 0, sizeof ( itimer ) );
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itimer.itimer.itimer_num = ITIMER_REAL;
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itimer.itimer.itimer_sig = SIGALRM;
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if ( PAPI_set_opt( PAPI_DEF_ITIMER, &itimer ) != PAPI_OK )
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test_fail( __FILE__, __LINE__, "PAPI_set_opt", retval );
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retval =
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PAPI_overflow( EventSet, PAPI_event, mythreshold,
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PAPI_OVERFLOW_FORCE_SW, 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_stuff( );
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retval = PAPI_stop( EventSet, &values[use_total] );
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if ( retval != PAPI_OK )
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test_fail( __FILE__, __LINE__, "PAPI_stop", retval );
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use_total++;
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retval =
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PAPI_overflow( EventSet, PAPI_event, 0, PAPI_OVERFLOW_FORCE_SW,
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handler );
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if ( retval != PAPI_OK )
|
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test_fail( __FILE__, __LINE__, "PAPI_overflow", retval );
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if ( !TESTS_QUIET ) {
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if ( ( retval =
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PAPI_event_code_to_name( PAPI_event, event_name ) ) != PAPI_OK )
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|
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test_fail( __FILE__, __LINE__, "PAPI_event_code_to_name", retval );
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|
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|
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577717 |
printf
|
|
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( "Test case: Software overflow of various types with 1 event in set.\n" );
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577717 |
printf
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|
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( "------------------------------------------------------------------------------\n" );
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printf( "Threshold for overflow is: %d\n", mythreshold );
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577717 |
printf
|
|
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( "------------------------------------------------------------------------------\n" );
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|
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577717 |
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|
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577717 |
printf( "Test type : %11s%13s%13s%13s%13s\n", "Reference", "Hardware",
|
|
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577717 |
"ITIMER_PROF", "ITIMER_VIRT", "ITIMER_REAL" );
|
|
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577717 |
printf( "%-12s: %11lld%13lld%13lld%13lld%13lld\n", info.symbol,
|
|
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577717 |
values[0], values[1], values[2], values[3], values[4] );
|
|
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577717 |
printf( "Overflows : %11d%13d%13d%13d%13d\n", total[0], total[1],
|
|
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577717 |
total[2], total[3], total[4] );
|
|
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577717 |
printf
|
|
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577717 |
( "------------------------------------------------------------------------------\n" );
|
|
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577717 |
|
|
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577717 |
printf( "Verification:\n" );
|
|
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577717 |
|
|
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577717 |
printf
|
|
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577717 |
( "Overflow in Column 2 greater than or equal to overflows in Columns 3, 4, 5\n" );
|
|
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577717 |
printf( "Overflow in Columns 3, 4, 5 greater than 0\n" );
|
|
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577717 |
}
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577717 |
|
|
Packit |
577717 |
hard_min =
|
|
Packit |
577717 |
( long long ) ( ( ( double ) values[0] * ( 1.0 - OVR_TOLERANCE ) ) /
|
|
Packit |
577717 |
( double ) mythreshold );
|
|
Packit |
577717 |
hard_max =
|
|
Packit |
577717 |
( long long ) ( ( ( double ) values[0] * ( 1.0 + OVR_TOLERANCE ) ) /
|
|
Packit |
577717 |
( double ) mythreshold );
|
|
Packit |
577717 |
soft_min =
|
|
Packit |
577717 |
( long long ) ( ( ( double ) values[0] * ( 1.0 - SOFT_TOLERANCE ) ) /
|
|
Packit |
577717 |
( double ) mythreshold );
|
|
Packit |
577717 |
soft_max =
|
|
Packit |
577717 |
( long long ) ( ( ( double ) values[0] * ( 1.0 + SOFT_TOLERANCE ) ) /
|
|
Packit |
577717 |
( double ) mythreshold );
|
|
Packit |
577717 |
|
|
Packit |
577717 |
if ( total[1] > hard_max || total[1] < hard_min )
|
|
Packit |
577717 |
test_fail( __FILE__, __LINE__, "Hardware Overflows outside limits", 1 );
|
|
Packit |
577717 |
|
|
Packit |
577717 |
if ( total[2] > soft_max || total[3] > soft_max || total[4] > soft_max )
|
|
Packit |
577717 |
test_fail( __FILE__, __LINE__,
|
|
Packit |
577717 |
"Software Overflows exceed theoretical maximum", 1 );
|
|
Packit |
577717 |
|
|
Packit |
577717 |
if ( total[2] < soft_min || total[3] < soft_min || total[4] < soft_min )
|
|
Packit |
577717 |
printf( "WARNING: Software Overflow occuring but suspiciously low\n" );
|
|
Packit |
577717 |
|
|
Packit |
577717 |
if ( ( total[2] == 0 ) || ( total[3] == 0 ) || ( total[4] == 0 ) )
|
|
Packit |
577717 |
test_fail( __FILE__, __LINE__, "Software Overflows", 1 );
|
|
Packit |
577717 |
|
|
Packit |
577717 |
test_pass( __FILE__ );
|
|
Packit |
577717 |
|
|
Packit |
577717 |
return 0;
|
|
Packit |
577717 |
|
|
Packit |
577717 |
}
|