profile.c

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/*
* File:    profile.c
* Author:  Philip Mucci
*          mucci@cs.utk.edu
* Mods:    Dan Terpstra
*          terpstra@cs.utk.edu
* Mods:    Maynard Johnson
*          maynardj@us.ibm.com
*/
 
/* This file performs the following test:
    profiling and program info option call
 
   - This tests the SVR4 profiling interface of PAPI. These are counted
   in the default counting domain and default granularity, depending on
   the platform. Usually this is the user domain (PAPI_DOM_USER) and
   thread context (PAPI_GRN_THR).
 
     The Eventset contains:
     + PAPI_FP_INS (to profile)
     + PAPI_TOT_CYC
 
   - Set up profile
   - Start eventset 1
   - Do both (flops and reads)
   - Stop eventset 1
*/
 
#include <stdio.h>
#include <stdlib.h>
 
#include "papi.h"
#include "papi_test.h"
#include "prof_utils.h"
 
#include "do_loops.h"
 
#define PROFILE_ALL
 
static int
do_profile( vptr_t start, unsigned long plength, unsigned scale, int thresh,
            int bucket )
{
    int i, retval;
    unsigned long blength;
    int num_buckets;
 
    const char *profstr[5] = { "PAPI_PROFIL_POSIX",
        "PAPI_PROFIL_RANDOM",
        "PAPI_PROFIL_WEIGHTED",
        "PAPI_PROFIL_COMPRESS",
        "PAPI_PROFIL_<all>"
    };
 
    int profflags[5] = { PAPI_PROFIL_POSIX,
        PAPI_PROFIL_POSIX | PAPI_PROFIL_RANDOM,
        PAPI_PROFIL_POSIX | PAPI_PROFIL_WEIGHTED,
        PAPI_PROFIL_POSIX | PAPI_PROFIL_COMPRESS,
        PAPI_PROFIL_POSIX | PAPI_PROFIL_WEIGHTED |
            PAPI_PROFIL_RANDOM | PAPI_PROFIL_COMPRESS
    };
 
    do_no_profile( TESTS_QUIET );
    blength = prof_size( plength, scale, bucket, &num_buckets );
    prof_alloc( 5, blength );
 
    for ( i = 0; i < 5; i++ ) {
        if ( !TESTS_QUIET ) {
            printf( "Test type   : \t%s\n", profstr[i] );
        }
 
#ifndef SWPROFILE
        if ( ( retval =
               PAPI_profil( profbuf[i], ( unsigned int ) blength, start, scale,
                            EventSet, PAPI_event, thresh,
                            profflags[i] | bucket ) ) != PAPI_OK ) {
           if (retval==PAPI_ENOSUPP) {
              char warning[BUFSIZ];
 
              sprintf(warning,"PAPI_profil %s not supported",
                  profstr[i]);
              test_warn( __FILE__, __LINE__, warning, 1 );
           }
           else {
              test_fail( __FILE__, __LINE__, "PAPI_profil", retval );
           }
        }
#else
        if ( ( retval =
               PAPI_profil( profbuf[i], ( unsigned int ) blength, start, scale,
                            EventSet, PAPI_event, thresh,
                            profflags[i] | bucket | PAPI_PROFIL_FORCE_SW ) ) !=
             PAPI_OK ) {
           test_fail( __FILE__, __LINE__, "PAPI_profil", retval );
        }
#endif
 
        if ( retval != PAPI_OK )
            break;
 
        if ( ( retval = PAPI_start( EventSet ) ) != PAPI_OK )
            test_fail( __FILE__, __LINE__, "PAPI_start", retval );
 
        do_flops( getenv( "NUM_FLOPS" ) ? atoi( getenv( "NUM_FLOPS" ) ) :
                  NUM_FLOPS );
 
        if ( ( retval = PAPI_stop( EventSet, values[1] ) ) != PAPI_OK )
            test_fail( __FILE__, __LINE__, "PAPI_stop", retval );
 
        if ( !TESTS_QUIET ) {
            printf( TAB1, event_name, ( values[1] )[0] );
            printf( TAB1, "PAPI_TOT_CYC", ( values[1] )[1] );
        }
        retval = PAPI_profil( profbuf[i], ( unsigned int ) blength, start, scale,
                            EventSet, PAPI_event, 0,
                            profflags[i] );
        if (retval != PAPI_OK ) {
            test_fail( __FILE__, __LINE__, "PAPI_profil", retval );
        }
    }
 
    if ( retval == PAPI_OK ) {
        if (!TESTS_QUIET) prof_head( blength, bucket, num_buckets,
                   "address\t\t\tflat\trandom\tweight\tcomprs\tall\n" );
        if (!TESTS_QUIET) prof_out( start, 5, bucket, num_buckets, scale );
        retval = prof_check( 5, bucket, num_buckets );
    }
 
    for ( i = 0; i < 5; i++ ) {
        free( profbuf[i] );
    }
 
    return retval;
}
 
 
int
main( int argc, char **argv )
{
    int num_tests = 6;
    long length;
    int mask;
    int retval;
    int mythreshold = THRESHOLD;
    const PAPI_exe_info_t *prginfo;
    vptr_t start, end;
    int quiet;
 
    /* Set TESTS_QUIET variable */
    quiet = tests_quiet( argc, argv );
 
    retval = PAPI_library_init( PAPI_VER_CURRENT );
    if (retval != PAPI_VER_CURRENT ) {
                test_fail( __FILE__, __LINE__, "PAPI_library_init", retval );
    }
 
        if ( ( prginfo = PAPI_get_executable_info(  ) ) == NULL ) {
        test_fail( __FILE__, __LINE__, "PAPI_get_executable_info", 1 );
    }
 
    retval = PAPI_query_event(PAPI_TOT_CYC);
    if (retval!=PAPI_OK) {
        if (!quiet) printf("No events found\n");
        test_skip(__FILE__, __LINE__,"No events found",1);
    }
 
    mask = prof_events( num_tests );
 
#ifdef PROFILE_ALL
/* use these lines to profile entire code address space */
    start = prginfo->address_info.text_start;
    end = prginfo->address_info.text_end;
#else
/* use these lines to profile only do_flops address space */
    start = ( vptr_t ) do_flops;
    end = ( vptr_t ) fdo_flops;
/* Itanium and ppc64 processors return function descriptors instead of function addresses.
   You must dereference the descriptor to get the address.
*/
#if defined(ITANIUM1) || defined(ITANIUM2) || defined(__powerpc64__)
    start = ( vptr_t ) ( ( ( struct fdesc * ) start )->ip );
    end = ( vptr_t ) ( ( ( struct fdesc * ) end )->ip );
#endif
#endif
 
#if defined(linux)
    {
        char *tmp = getenv( "THRESHOLD" );
        if ( tmp )
            mythreshold = atoi( tmp );
    }
#endif
 
    length = end - start;
    if ( length < 0 ) {
        test_fail( __FILE__, __LINE__, "Profile length < 0!", ( int ) length );
    }
 
    if (!quiet) {
        prof_print_address( "Test case profile: "
            "POSIX compatible profiling with hardware counters.\n",
            prginfo );
        prof_print_prof_info( start, end, mythreshold, event_name );
    }
 
    retval = do_profile( start, ( unsigned long ) length, FULL_SCALE,
                mythreshold, PAPI_PROFIL_BUCKET_16 );
    if ( retval == PAPI_OK ) {
        retval = do_profile( start, ( unsigned long ) length,
                        FULL_SCALE, mythreshold,
                        PAPI_PROFIL_BUCKET_32 );
    }
    if ( retval == PAPI_OK ) {
        retval = do_profile( start, ( unsigned long ) length,
                        FULL_SCALE, mythreshold,
                        PAPI_PROFIL_BUCKET_64 );
    }
 
    remove_test_events( &EventSet, mask );
 
    test_pass( __FILE__ );
 
    return 0;
}