TInt CCpuMeter::Construct()
{
iNumCpus = NumberOfCpus();
iNullThreads = (RThread*)User::AllocZ(iNumCpus*sizeof(RThread));
iDelta = (TInt*)User::AllocZ(iNumCpus*sizeof(TInt));
iMeas[0] = (TTimeIntervalMicroSeconds*)User::AllocZ(iNumCpus*sizeof(TTimeIntervalMicroSeconds));
iMeas[1] = (TTimeIntervalMicroSeconds*)User::AllocZ(iNumCpus*sizeof(TTimeIntervalMicroSeconds));
if (!iNullThreads || !iDelta || !iMeas[0] || !iMeas[1])
return KErrNoMemory;
TFullName kname;
_LIT(KLitKernelName, "ekern.exe*");
_LIT(KLitNull, "::Null");
TFindProcess fp(KLitKernelName);
test_KErrNone(fp.Next(kname));
test.Printf(_L("Found kernel process: %S\n"), &kname);
kname.Append(KLitNull);
TInt i;
for (i=0; i<iNumCpus; ++i)
{
TFullName tname(kname);
TFullName tname2;
if (i>0)
tname.AppendNum(i);
TFindThread ft(tname);
test_KErrNone(ft.Next(tname2));
TInt r = iNullThreads[i].Open(ft);
test_KErrNone(r);
iNullThreads[i].FullName(tname2);
test.Printf(_L("Found and opened %S\n"), &tname2);
}
for (i=0; i<iNumCpus; ++i)
iNullThreads[i].GetCpuTime(iMeas[0][i]);
iNextMeas = 1;
return KErrNone;
}
size_t NSystemInfo::CachedNumberOfCpus() {
if (!NCpus) {
NCpus = NumberOfCpus();
}
return NCpus;
}
GLDEF_C TInt E32Main()
{
test.SetLogged(EFalse);
test.Title();
RThread().SetPriority(EPriorityAbsoluteHigh);
if (CpuTimeSupported())
{
UseKernelCpuTime();
}
if (NumberOfCpus()>1)
{
test.Printf(_L("Needs RThread::GetCpuTime() on SMP systems\n"));
}
else
MeasureByNOPs();
return 0;
}
