report.c
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/*
* Copyright 1995, Silicon Graphics, Inc.
* All Rights Reserved.
*
* This is UNPUBLISHED PROPRIETARY SOURCE CODE of Silicon Graphics, Inc.;
* the contents of this file may not be disclosed to third parties, copied or
* duplicated in any form, in whole or in part, without the prior written
* permission of Silicon Graphics, Inc.
*
* RESTRICTED RIGHTS LEGEND:
* Use, duplication or disclosure by the Government is subject to restrictions
* as set forth in subdivision (c)(1)(ii) of the Rights in Technical Data
* and Computer Software clause at DFARS 252.227-7013, and/or in similar or
* successor clauses in the FAR, DOD or NASA FAR Supplement. Unpublished -
* rights reserved under the Copyright Laws of the United States.
*
*
* report - print profile report
*
*/
#include <stdio.h>
#include <strings.h>
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <unistd.h>
#include <a.out.h>
typedef SYMR SYMENT;
#include <ldfcn.h>
#include "gperf.h"
extern LDFILE *Ldptr;
/*
* S t r u c t u r e s
*/
typedef struct {
char *name;
symaddr_t addr;
unsigned cnt;
} syment_t;
/*
* G l o b a l s
*/
static int Dump = 0; /* if set then dump symbols used */
static int symcnt; /* number of symbols */
static syment_t *symEntTbl = NULL; /* list of addresses */
/*
* F o w a r d R e f e r e n c e s
*/
static syment_t *rdsymtab(char *namelist);
static syment_t * bsearch_sym( symaddr_t addr, syment_t *symtab, int ntab);
static int compar_addr();
static int compar_cnt();
static float sum = 0.0;
/*
* F u n c t i o n s
*/
void
report( int numSegs, gPerfHisto *PerfHists, int tp, int overflow )
{
register syment_t *symEnt;
register SYMENT *sp;
int i, p;
float freq;
char fmt_string[50];
/*
* If you haven't already, read symbol table
*/
if(symEntTbl == NULL)
symEntTbl = rdsymtab(Namelist);
/*
* sort the symbol entries by address
*/
qsort(symEntTbl, symcnt, sizeof (syment_t), compar_addr);
/*
* Clear all the counts
*/
for(i = 0; i < symcnt; i++)
symEntTbl[i].cnt = 0;
/*
* Sum counts for each function
*/
sum = overflow;
/*
* Get counts per symbol
*/
for (p = 0; p < numSegs; p++) /* for each profiled section */
{
for (i = 0; i < PerfHists[p].numEntrs; i++) /* for each possible entry */
{
if (PerfHists[p].histo[i]) /* if you got hits */
{
/* update the number of hits in the symEntTbl */
(bsearch_sym(i*4+PerfHists[p].start, symEntTbl, symcnt))->cnt +=
PerfHists[p].histo[i];
/* update the total number of hits */
sum += (float)PerfHists[p].histo[i];
}
}
}
/*
* Sort by count
*/
qsort(symEntTbl, symcnt, sizeof (syment_t), compar_cnt);
/*
* Print Report
*/
printf("-------------------------------------------------------------\n");
printf("Profile Report for %s\n", Namelist);
printf("Number of text symbols: %d\n", symcnt);
printf("Sample period: %d microseconds\n", tp);
printf("Number of profiled segments: %d\n", numSegs);
for (i = 0; i < numSegs; i++) {
printf(" Segment %d, start = %08x, end = %08x, size = %08x\n",
i, PerfHists[i].start, (int)PerfHists[i].start + 2*PerfHists[i].numEntrs - 4, PerfHists[i].numEntrs);
}
printf("-------------------------------------------------------------\n");
printf("\n");
for (symEnt = symEntTbl; symEnt < (symEntTbl+symcnt); symEnt++)
{
if (PrintCounts)
freq = (float)symEnt->cnt;
else
freq = (float)symEnt->cnt / sum * 100.0;
if (freq >= Threshold)
{
sprintf(fmt_string,"...........................................\0");
for (i = 0; i < 40; i++) {
if (!symEnt->name || symEnt->name[i] == '\0')
break;
fmt_string[i] = symEnt->name[i];
}
printf("%08x %s %8.4f %% ", symEnt->addr, fmt_string,
(float)symEnt->cnt / sum * 100.0);
if (PrintCounts)
printf("%5d ", symEnt->cnt);
if (PrintRealTime)
printf("%10.6f sec", (float)symEnt->cnt * (float)tp / 1000000.0 );
printf("\n");
}
}
printf("Overflow ");
sprintf(fmt_string,"...........................................\0");
printf("%s %8.4f %% ", fmt_string, (float)overflow/sum *100.0);
if (PrintCounts)
printf("%5d ", overflow);
if (PrintRealTime)
printf("%10.6f sec", (float)overflow * (float)tp / 1000000.0 );
printf("\n");
if (ServerMode)
return;
else
exit(0);
}
/*
* Compare function used by bsort
* sort by count
*/
static int
compar_cnt(x, y)
syment_t *x, *y;
{
if (x->cnt > y->cnt)
return(1);
else if (x->cnt == y->cnt)
return(0);
return(-1);
}
/*
* Compare function used by bsort
*/
static int
compar_addr(x, y)
syment_t *x, *y;
{
if (x->addr > y->addr)
return(1);
else if (x->addr == y->addr)
return(0);
return(-1);
}
/*
* Read symbol table and addresses of each symbol
*/
static syment_t *
rdsymtab( char *namelist)
{
register int i;
register int maxsym;
register syment_t *ip;
SYMR ts;
syment_t *addrbase;
/* external symbols start at index isymMax and are iextMax long */
maxsym = SYMHEADER(Ldptr).isymMax + SYMHEADER(Ldptr).iextMax;
symcnt = 0;
if((addrbase = (syment_t *) malloc (maxsym * sizeof(syment_t *) + 1))
== NULL) {
error("cannot allocate space for namelist");
exit(1);
}
ip = addrbase;
for(i = 0; i < maxsym; i++) {
if(ldtbread(Ldptr, i, &ts) != SUCCESS)
error("cannot read symbol from namelist");
if (i < SYMHEADER(Ldptr).isymMax && ts.st != stStatic &&
ts.st != stStaticProc)
/* statics allowed, throw away other locals */
continue;
if(ts.sc == scText && (ts.st == stProc || ts.st == stStaticProc)) {
ip->addr = ts.value;
ip->name = strdup(ldgetname(Ldptr, &ts));
ip->cnt = 0;
ip++;
symcnt++;
}
}
if (Dump) {
printf("%d text symbols out of %d total read from %s\n",
symcnt, maxsym, namelist);
}
if(ldclose(Ldptr) != SUCCESS) {
error("cannot ldclose namelist file");
exit(1);
}
return(addrbase);
}
/*
* return symbol entry for given address, finds address range
* that symbol lies within and return address of that function.
*/
static syment_t *
bsearch_sym( symaddr_t addr, syment_t *symtab, int ntab)
{
int hi, lo, mid;
lo = 0;
hi = ntab - 1;
while(lo <= hi)
{
mid = (lo + hi) / 2;
if (addr == symtab[mid].addr)
return(&symtab[mid]);
if (addr < symtab[mid].addr)
hi = mid - 1;
else
lo = mid + 1;
}
if(symtab[mid].addr > addr)
return(&symtab[mid-1]);
else
return(&symtab[mid]);
}