PfmCodeAnalyser Class Reference

#include <GaudiProfiling/PfmCodeAnalyser.h>

Collaboration diagram for PfmCodeAnalyser:

Public Member Functions
void	start ()
void	stop ()
void	stop_init ()

Static Public Member Functions
static PfmCodeAnalyser &	Instance (const char *event0="UNHALTED_CORE_CYCLES", unsigned int cmask_v0=0, bool inv_v0=false, const char *event1="", unsigned int cmask_v1=0, bool inv_v1=false, const char *event2="", unsigned int cmask_v2=0, bool inv_v2=false, const char *event3="", unsigned int cmask_v3=0, bool inv_v3=false)

Private Member Functions
	PfmCodeAnalyser (const char *event0, unsigned int cmask_v0, bool inv_v0, const char *event1, unsigned int cmask_v1, bool inv_v1, const char *event2, unsigned int cmask_v2, bool inv_v2, const char *event3, unsigned int cmask_v3, bool inv_v3)
	PfmCodeAnalyser (PfmCodeAnalyser const &)
PfmCodeAnalyser &	operator= (PfmCodeAnalyser const &)
	~PfmCodeAnalyser ()

Private Attributes
int	used_counters_number
int	nehalem
pfmlib_input_param_t	inp
pfmlib_output_param_t	outp
pfarg_ctx_t	ctx
pfarg_pmd_t	pd [NUM_PMDS]
pfarg_pmc_t	pc [NUM_PMCS]
pfarg_load_t	load_arg
int	fd
char	event_str [MAX_NUMBER_OF_PROGRAMMABLE_COUNTERS][MAX_EVT_NAME_LEN]
bool	inv [MAX_NUMBER_OF_PROGRAMMABLE_COUNTERS]
unsigned int	cmask [MAX_NUMBER_OF_PROGRAMMABLE_COUNTERS]
pfmlib_core_input_param_t	params
pfmlib_nhm_input_param_t	nhm_params
int	ret
unsigned	i
unsigned long	sum [MAX_NUMBER_OF_PROGRAMMABLE_COUNTERS]
unsigned	count
unsigned	overhead_avg [MAX_NUMBER_OF_PROGRAMMABLE_COUNTERS]

Detailed Description

Definition at line 23 of file PfmCodeAnalyser.h.

Constructor & Destructor Documentation

PfmCodeAnalyser::PfmCodeAnalyser ( const char *  event0, unsigned int  cmask_v0, bool  inv_v0, const char *  event1, unsigned int  cmask_v1, bool  inv_v1, const char *  event2, unsigned int  cmask_v2, bool  inv_v2, const char *  event3, unsigned int  cmask_v3, bool  inv_v3  )

private

Definition at line 65 of file PfmCodeAnalyser.h.

{
  int ax, bx, cx, dx;
  cpuid( 1, ax, bx, cx, dx );
  int sse4_2_mask = 1 << 20;
  nehalem         = cx & sse4_2_mask;
  strcpy( event_str[0], event0 );
  strcpy( event_str[1], event1 );
  strcpy( event_str[2], event2 );
  strcpy( event_str[3], event3 );
  cmask[0]             = cmask_v0;
  cmask[1]             = cmask_v1;
  cmask[2]             = cmask_v2;
  cmask[3]             = cmask_v3;
  inv[0]               = inv_v0;
  inv[1]               = inv_v1;
  inv[2]               = inv_v2;
  inv[3]               = inv_v3;
  used_counters_number = 0;
  for ( int i = 0; i < MAX_NUMBER_OF_PROGRAMMABLE_COUNTERS; i++ ) {
    if ( strlen( event_str[i] ) > 0 ) used_counters_number++;
  }
  for ( int i = 0; i < used_counters_number; i++ ) {
    sum[i]          = 0;
    overhead_avg[i] = 0;
  }
  count = 0;
  if ( pfm_initialize() != PFMLIB_SUCCESS ) {
    printf( "Cannot initialize perfmon!!\nExiting...\n" );
    exit( 0 );
  }
  while ( count < 3 ) {
    start();
    stop_init();
  }
  for ( int i = 0; i < used_counters_number; i++ ) {
    sum[i] = 0;
  }
  count = 0;
  while ( count < 10 ) {
    start();
    stop_init();
  }
  for ( int i = 0; i < used_counters_number; i++ ) {
    overhead_avg[i] = sum[i] / count;
    sum[i]          = 0;
  }
  count = 0;
}

PfmCodeAnalyser::PfmCodeAnalyser ( PfmCodeAnalyser const &  )

private

PfmCodeAnalyser::~PfmCodeAnalyser ( )

private

Definition at line 229 of file PfmCodeAnalyser.h.

{
  for ( int i = 0; i < used_counters_number; i++ ) {
    printf( "Event: %s\nTotal count:%lu\nNumber of counts:%u\nAverage count:%f\nOverhead removed:%u\n", event_str[i],
            sum[i], count, (double)sum[i] / count, overhead_avg[i] );
  }
}

Member Function Documentation

PfmCodeAnalyser & PfmCodeAnalyser::Instance ( const char *  event0 = "UNHALTED_CORE_CYCLES", unsigned int  cmask_v0 = 0, bool  inv_v0 = false, const char *  event1 = "", unsigned int  cmask_v1 = 0, bool  inv_v1 = false, const char *  event2 = "", unsigned int  cmask_v2 = 0, bool  inv_v2 = false, const char *  event3 = "", unsigned int  cmask_v3 = 0, bool  inv_v3 = false  )

static

Definition at line 117 of file PfmCodeAnalyser.h.

{
  static PfmCodeAnalyser theSingleton( event0, cmask_v0, inv_v0, event1, cmask_v1, inv_v1, event2, cmask_v2, inv_v2,
                                       event3, cmask_v3, inv_v3 );
  return theSingleton;
}

PfmCodeAnalyser& PfmCodeAnalyser::operator= ( PfmCodeAnalyser const &  )

private

void PfmCodeAnalyser::start

(

)

Definition at line 129 of file PfmCodeAnalyser.h.

{
  memset( &ctx, 0, sizeof( ctx ) );
  memset( &inp, 0, sizeof( inp ) );
  memset( &outp, 0, sizeof( outp ) );
  memset( pd, 0, sizeof( pd ) );
  memset( pc, 0, sizeof( pc ) );
  memset( &load_arg, 0, sizeof( load_arg ) );
  memset( &params, 0, sizeof( params ) );
  for ( int i = 0; i < used_counters_number; i++ ) {
    ret = pfm_find_full_event( event_str[i], &inp.pfp_events[i] );
    if ( ret != PFMLIB_SUCCESS ) {
      fprintf( stderr, "ERROR: cannot find event: %s\naborting...\n", event_str[i] );
      exit( 1 );
    }
  }
  inp.pfp_dfl_plm     = PFM_PLM3;
  inp.pfp_event_count = used_counters_number;
  for ( int i = 0; i < used_counters_number; i++ ) {
    if ( inv[i] ) {
      ( params.pfp_core_counters[i] ).flags |= PFM_CORE_SEL_INV;
      ( nhm_params.pfp_nhm_counters[i] ).flags |= PFM_NHM_SEL_INV;
    }
    if ( cmask[i] > 0 ) {
      ( params.pfp_core_counters[i] ).cnt_mask    = cmask[i];
      ( nhm_params.pfp_nhm_counters[i] ).cnt_mask = cmask[i];
    }
  }
  if ( nehalem ) {
    ret = pfm_dispatch_events( &inp, &nhm_params, &outp, NULL );
  } else {
    ret = pfm_dispatch_events( &inp, &params, &outp, NULL );
  }
  if ( ret != PFMLIB_SUCCESS ) {
    fprintf( stderr, "ERROR: cannot dispatch events: %s\naborting...\n", pfm_strerror( ret ) );
    exit( 1 );
  }
  for ( unsigned int i = 0; i < outp.pfp_pmc_count; i++ ) {
    pc[i].reg_num   = outp.pfp_pmcs[i].reg_num;
    pc[i].reg_value = outp.pfp_pmcs[i].reg_value;
  }
  for ( unsigned int i = 0; i < outp.pfp_pmd_count; i++ ) {
    pd[i].reg_num   = outp.pfp_pmds[i].reg_num;
    pd[i].reg_value = 0;
  }
  fd = pfm_create_context( &ctx, NULL, 0, 0 );
  if ( fd == -1 ) {
    fprintf( stderr, "ERROR: Context not created\naborting...\n" );
    exit( 1 );
  }
  if ( pfm_write_pmcs( fd, pc, outp.pfp_pmc_count ) == -1 ) {
    fprintf( stderr, "ERROR: Could not write pmcs\naborting...\n" );
    exit( 1 );
  }
  if ( pfm_write_pmds( fd, pd, outp.pfp_pmd_count ) == -1 ) {
    fprintf( stderr, "ERROR: Could not write pmds\naborting...\n" );
    exit( 1 );
  }
  load_arg.load_pid = getpid();
  if ( pfm_load_context( fd, &load_arg ) == -1 ) {
    fprintf( stderr, "ERROR: Could not load context\naborting...\n" );
    exit( 1 );
  }
  pfm_start( fd, NULL );
}

void PfmCodeAnalyser::stop

(

)

Definition at line 199 of file PfmCodeAnalyser.h.

{
  pfm_stop( fd );
  if ( pfm_read_pmds( fd, pd, inp.pfp_event_count ) == -1 ) {
    fprintf( stderr, "ERROR: Could not read pmds\naborting...\n" );
    exit( 1 );
  }

  for ( int i = 0; i < used_counters_number; i++ ) {
    sum[i] += ( pd[i].reg_value - overhead_avg[i] );
  }
  count++;
  close( fd );
}

void PfmCodeAnalyser::stop_init

(

)

Definition at line 214 of file PfmCodeAnalyser.h.

{
  pfm_stop( fd );
  if ( pfm_read_pmds( fd, pd, inp.pfp_event_count ) == -1 ) {
    fprintf( stderr, "ERROR: Could not read pmds\naborting...\n" );
    exit( 1 );
  }

  for ( int i = 0; i < used_counters_number; i++ ) {
    sum[i] += ( pd[i].reg_value );
  }
  count++;
  close( fd );
}

Member Data Documentation

unsigned int PfmCodeAnalyser::cmask[MAX_NUMBER_OF_PROGRAMMABLE_COUNTERS]

private

Definition at line 37 of file PfmCodeAnalyser.h.

unsigned PfmCodeAnalyser::count

private

Definition at line 43 of file PfmCodeAnalyser.h.

pfarg_ctx_t PfmCodeAnalyser::ctx

private

Definition at line 30 of file PfmCodeAnalyser.h.

char PfmCodeAnalyser::event_str[MAX_NUMBER_OF_PROGRAMMABLE_COUNTERS][MAX_EVT_NAME_LEN]

private

Definition at line 35 of file PfmCodeAnalyser.h.

int PfmCodeAnalyser::fd

private

Definition at line 34 of file PfmCodeAnalyser.h.

unsigned PfmCodeAnalyser::i

private

Definition at line 41 of file PfmCodeAnalyser.h.

pfmlib_input_param_t PfmCodeAnalyser::inp

private

Definition at line 28 of file PfmCodeAnalyser.h.

bool PfmCodeAnalyser::inv[MAX_NUMBER_OF_PROGRAMMABLE_COUNTERS]

private

Definition at line 36 of file PfmCodeAnalyser.h.

pfarg_load_t PfmCodeAnalyser::load_arg

private

Definition at line 33 of file PfmCodeAnalyser.h.

int PfmCodeAnalyser::nehalem

private

Definition at line 27 of file PfmCodeAnalyser.h.

pfmlib_nhm_input_param_t PfmCodeAnalyser::nhm_params

private

Definition at line 39 of file PfmCodeAnalyser.h.

pfmlib_output_param_t PfmCodeAnalyser::outp

private

Definition at line 29 of file PfmCodeAnalyser.h.

unsigned PfmCodeAnalyser::overhead_avg[MAX_NUMBER_OF_PROGRAMMABLE_COUNTERS]

private

Definition at line 44 of file PfmCodeAnalyser.h.

pfmlib_core_input_param_t PfmCodeAnalyser::params

private

Definition at line 38 of file PfmCodeAnalyser.h.

pfarg_pmc_t PfmCodeAnalyser::pc[NUM_PMCS]

private

Definition at line 32 of file PfmCodeAnalyser.h.

pfarg_pmd_t PfmCodeAnalyser::pd[NUM_PMDS]

private

Definition at line 31 of file PfmCodeAnalyser.h.

int PfmCodeAnalyser::ret

private

Definition at line 40 of file PfmCodeAnalyser.h.

unsigned long PfmCodeAnalyser::sum[MAX_NUMBER_OF_PROGRAMMABLE_COUNTERS]

private

Definition at line 42 of file PfmCodeAnalyser.h.

int PfmCodeAnalyser::used_counters_number

private

Definition at line 26 of file PfmCodeAnalyser.h.

---

The documentation for this class was generated from the following file:

• GaudiProfiling/GaudiProfiling/PfmCodeAnalyser.h