ctests/sprofile.c

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/*
* File:    sprofile.c
* Author:  Philip Mucci
*          mucci@cs.utk.edu
* Mods:    Maynard Johnson
*          maynardj@us.ibm.com
*/
 
#include <stdio.h>
#include <stdlib.h>
 
#include "papi.h"
#include "papi_test.h"
#include "prof_utils.h"
 
#include "do_loops.h"
 
/* These architectures use Function Descriptors as Function Pointers */
 
#if (defined(linux) && defined(__ia64__)) || (defined(_AIX)) \
  || ((defined(__powerpc64__) && (_CALL_ELF != 2)))
/* PPC64 Big Endian is ELF version 1 which uses function descriptors */
#define DO_READS (unsigned long)(*(void **)do_reads)
#define DO_FLOPS (unsigned long)(*(void **)do_flops)
#else
/* PPC64 Little Endian is ELF version 2 which does not use
 * function descriptors
 */
#define DO_READS (unsigned long)(do_reads)
#define DO_FLOPS (unsigned long)(do_flops)
#endif
 
/* This file performs the following test: sprofile */
 
 
int
main( int argc, char **argv )
{
    int i, num_events, num_tests = 6, mask = 0x1;
    int EventSet = PAPI_NULL;
    unsigned short **buf = ( unsigned short ** ) profbuf;
    unsigned long length, blength;
    int num_buckets;
    PAPI_sprofil_t sprof[3];
    int retval;
    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 );
    }
 
    start = prginfo->address_info.text_start;
    end = prginfo->address_info.text_end;
    if ( start > end ) {
       test_fail( __FILE__, __LINE__, "Profile length < 0!", PAPI_ESYS );
    }
    length = ( unsigned long ) ( end - start );
    if (!quiet) {
        prof_print_address( "Test case sprofile: POSIX compatible profiling over multiple regions.\n",
                prginfo );
    }
 
    blength = prof_size( length, FULL_SCALE, PAPI_PROFIL_BUCKET_16,
                &num_buckets );
    prof_alloc( 3, blength );
 
    /* First half */
    sprof[0].pr_base = buf[0];
    sprof[0].pr_size = ( unsigned int ) blength;
    sprof[0].pr_off = ( vptr_t ) DO_FLOPS;
#if defined(linux) && defined(__ia64__)
    if ( !quiet )
        fprintf( stderr, "do_flops is at %p %p\n", &do_flops, sprof[0].pr_off );
#endif
    sprof[0].pr_scale = FULL_SCALE;
    /* Second half */
    sprof[1].pr_base = buf[1];
    sprof[1].pr_size = ( unsigned int ) blength;
    sprof[1].pr_off = ( vptr_t ) DO_READS;
#if defined(linux) && defined(__ia64__)
    if ( !quiet )
        fprintf( stderr, "do_reads is at %p %p\n", &do_reads, sprof[1].pr_off );
#endif
    sprof[1].pr_scale = FULL_SCALE;
    /* Overflow bin */
    sprof[2].pr_base = buf[2];
    sprof[2].pr_size = 1;
    sprof[2].pr_off = 0;
    sprof[2].pr_scale = 0x2;
 
    EventSet = add_test_events( &num_events, &mask, 1 );
 
    values = allocate_test_space( num_tests, num_events );
 
    retval = PAPI_sprofil( sprof, 3, EventSet, PAPI_TOT_CYC, THRESHOLD,
                PAPI_PROFIL_POSIX | PAPI_PROFIL_BUCKET_16 );
    if (retval != PAPI_OK ) {
        if (retval == PAPI_ENOEVNT) {
            if (!quiet) printf("Trouble creating events\n");
            test_skip(__FILE__,__LINE__,"PAPI_sprofil",retval);
        }
        test_fail( __FILE__, __LINE__, "PAPI_sprofil", retval );
    }
 
    do_stuff(  );
 
    if ( ( retval = PAPI_start( EventSet ) ) != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_start", retval );
 
    do_stuff(  );
 
    if ( ( retval = PAPI_stop( EventSet, values[1] ) ) != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_stop", retval );
 
    /* clear the profile flag before removing the event */
    if ( ( retval = PAPI_sprofil( sprof, 3, EventSet, PAPI_TOT_CYC, 0,
                                  PAPI_PROFIL_POSIX | PAPI_PROFIL_BUCKET_16 ) )
         != PAPI_OK )
        test_fail( __FILE__, __LINE__, "PAPI_sprofil", retval );
 
    remove_test_events( &EventSet, mask );
 
 
 
    if ( !quiet ) {
        printf( "Test case: PAPI_sprofil()\n" );
        printf( "---------Buffer 1--------\n" );
        for ( i = 0; i < ( int ) length / 2; i++ ) {
            if ( buf[0][i] )
                printf( "%#lx\t%d\n", DO_FLOPS + 2 * ( unsigned long ) i,
                        buf[0][i] );
        }
        printf( "---------Buffer 2--------\n" );
        for ( i = 0; i < ( int ) length / 2; i++ ) {
            if ( buf[1][i] )
                printf( "%#lx\t%d\n", DO_READS + 2 * ( unsigned long ) i,
                        buf[1][i] );
        }
        printf( "-------------------------\n" );
        printf( "%u samples fell outside the regions.\n", *buf[2] );
    }
    retval = prof_check( 2, PAPI_PROFIL_BUCKET_16, num_buckets );
 
    for ( i = 0; i < 3; i++ ) {
        free( profbuf[i] );
    }
    if ( retval == 0 ) {
        test_fail( __FILE__, __LINE__, "No information in buffers", 1 );
    }
 
    test_pass( __FILE__ );
 
    return 0;
}