#help_index "Debugging/Profiler;Profiler;Cmd Line (Typically)/Profiler"
#help_file "::/Doc/Profiler"
#define PF_ARRAY_CNT 0x100000
I64 pf_jiffy_start,pf_jiffy_end;
I64 *pf_array=NULL;
I64 pf_cpu=0;
I64 pf_buf_in_ptr=0,pf_depth;
I64 pf_prof_active=0;
U0 ProfTimerInt(CTask *task)
{//See profiler_timer_irq.
I64 i,k;
if (Bt(&pf_prof_active,0))
for (k=0;k<=pf_depth;k++) {
if (task==Gs->idle_task)
i=SYS_IDLE_PT;
else
i=TaskCaller(task,k,TRUE);
if (pf_buf_in_ptr<PF_ARRAY_CNT) {
pf_array[pf_buf_in_ptr++]=i;
pf_jiffy_end=cnts.jiffies;
}
}
}
public U0 Prof(I64 depth=0,I64 cpu_num=0)
{/*Start collecting profiler statistics.
Profilers report where time is spent
by sampling RIP during the $TX,"1000Hz",D="DD_JIFFY_HZ"$
timer interrupt.
Do a ProfRep(), (profiler report)
after you have collected data.
*/
if (!(0<=cpu_num<mp_cnt))
ST_ERR_ST "Invalid CPU\n";
else {
cpu_structs[pf_cpu].profiler_timer_irq=NULL;
pf_cpu=cpu_num;
pf_depth=depth;
pf_buf_in_ptr=0;
if (!pf_array)
pf_array=AMAlloc(sizeof(I64)*PF_ARRAY_CNT);
pf_jiffy_end=pf_jiffy_start=cnts.jiffies;
LBts(&pf_prof_active,0);
cpu_structs[pf_cpu].profiler_timer_irq=&ProfTimerInt;
}
}
I64 ProfCompare(U8 *i1,U8 *i2)
{
return i1-i2;
}
public U0 ProfRep(I64 filter_cnt=1,Bool leave_it=OFF)
{//Profiler report. Call Prof() first and collect data.
I64 i,hits,rip,last_rip=0,routine_total=0;
F64 total_time;
U8 buf[256],buf2[256],last_buf[256];
if (!LBtr(&pf_prof_active,0))
"Profiler Not Active\n";
if (!pf_buf_in_ptr)
"No Profiler Statistic\n";
else {
if (!(total_time=pf_jiffy_end-pf_jiffy_start))
total_time=1;
QSortI64(pf_array,pf_buf_in_ptr,&ProfCompare);
*last_buf=0;
for (i=0;i<pf_buf_in_ptr;i+=hits) {
rip=pf_array[i];
hits=0;
do hits++;
while (i+hits<pf_buf_in_ptr && pf_array[i+hits]==rip);
StrPrint(buf,"%p",rip);
StrFirstRem(buf,"+",buf2);
if (StrCmp(buf2,last_buf)) {
if (*last_buf && routine_total>=filter_cnt)
"$GREEN$%6.2f%08X:%s\n$FG$",100*routine_total/total_time,
routine_total,last_buf;
StrCpy(last_buf,buf2);
routine_total=0;
}
routine_total+=hits;
if (hits>=filter_cnt) {
"%6.2f%08X:%P\n",100*hits/total_time,hits,rip;
last_rip=rip;
}
}
if (*last_buf && routine_total>=filter_cnt)
"$GREEN$%6.2f%08X:%s\n$FG$",100*routine_total/total_time,
routine_total,last_buf;
"Total Time:%0.6fs\n",total_time/JIFFY_FREQ;
if (leave_it) {
cpu_structs[pf_cpu].profiler_timer_irq=&ProfTimerInt;
LBts(&pf_prof_active,0);
} else
cpu_structs[pf_cpu].profiler_timer_irq=NULL;
}
}