NT: Use Performance Counters - C / C++ / MFC Discussion Boards

Re: IDE Bug/Problem

David Crow27-Jul-04 8:09

David Crow

27-Jul-04 8:09

Are the IDs being added to the project's resource.h file?

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: IDE Bug/Problem

sweep12327-Jul-04 22:02

sweep123

27-Jul-04 22:02

Thanks for your interest.

Yes the ID are being added to the resource.h file.

Note ID_HELP is not present in the resouce, I assume that is part of the general envoronment. But the others associated say with the Save File Menu option etc are present. The numbers correspond to there IDC/IDs.

Note also if I replace the numbers with the resources (via properties window), they revert back to numbers again.

Is this an IDE bug or is something screwed up within the project.

Sweep

Re: IDE Bug/Problem

David Crow28-Jul-04 3:58

David Crow

28-Jul-04 3:58

sweep123 wrote:
Is this an IDE bug or is something screwed up within the project.

It's definitely not normal behavior. Does it happen with all of your projects, or just one in particular? Have you tried deleting the project's temporary files (e.g., .ncb, .opt, .aps, .clw)?

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: IDE Bug/Problem

sweep12328-Jul-04 6:29

sweep123

28-Jul-04 6:29

Its just this project. I did try what you suggested and also I replaced the numbers with the ID/IDC's. I even tried to replace the ID/IDC's in both the properties box and in the <progam>.rc file also for a few items, as the numbers are in this file also.

But still they revert back to numbers.

Are they anything that can be done to corrct this problem, or should I raise a call with Microsoft (I am allowed two with my support level).

cpu performance

hph27-Jul-04 4:59

hph

27-Jul-04 4:59

hello,

i need to know how to determine the total cpu usage expressed in percent. Is there any function which can provide this value ? Please help me it's urgent.

Thanks in advance!

Re: cpu performance

David Crow27-Jul-04 8:05

David Crow

27-Jul-04 8:05

See my response here.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: cpu performance

bikram singh27-Jul-04 8:06

bikram singh

27-Jul-04 8:06

On Win9x, i think the HKEY_DYN_DATA registry key provides some performance data, but im not sure if the CPU's included..

On NT/XP/2000, use performance counters:

HQUERY		hQuery;
HCOUNTER	hCounter;

if(ERROR_SUCCESS == PdhOpenQuery(0, 0, &hQuery))
{
 if(ERROR_SUCCESS == PdhAddCounter (hQuery,TEXT("\\Processor(0)\\% Processor Time"),0,&hCounter))
 {
  int i = 0;
  while(i < 5)
  {
   ++i;
   if(ERROR_SUCCESS == PdhCollectQueryData(hQuery))
   {
    PDH_FMT_COUNTERVALUE	val;
    if(ERROR_SUCCESS == PdhGetFormattedCounterValue(hCounter,PDH_FMT_LONG|PDH_FMT_NOSCALE,0, &val))
    {
     printf("\nCPU is at %d %%",val.longValue);
    }
   }
   Sleep(500); //wait for some time(not absolutely needed though, but better to wait some time atleast!)
  }
  PdhRemoveCounter(hCounter);
 }
 PdhCloseQuery(hQuery);
}

Bikram Singh

NT: Use Performance Counters

bikram singh27-Jul-04 8:09

bikram singh

27-Jul-04 8:09

HQUERY		hQuery;
HCOUNTER	hCounter;

if(ERROR_SUCCESS == PdhOpenQuery(0, 0, &hQuery))
{
 if(ERROR_SUCCESS == PdhAddCounter (hQuery,TEXT("\\Processor(0)\\% Processor Time"),0,&hCounter))
 {
  int i = 0;
  while(i < 5)
  {
   ++i;
   if(ERROR_SUCCESS == PdhCollectQueryData(hQuery))
   {
    PDH_FMT_COUNTERVALUE	val;
    if(ERROR_SUCCESS == PdhGetFormattedCounterValue(hCounter,PDH_FMT_LONG|PDH_FMT_NOSCALE,0, &val))
    {
     printf("\nCPU is at %d %%",val.longValue);
    }
   }
   Sleep(500); //wait for some time(not absolutely needed though, but better to wait some time atleast!)
  }
  PdhRemoveCounter(hCounter);
 }
 PdhCloseQuery(hQuery);
}

Bikram Singh

Upper limit of stack size increase..??

Shiva Prasad27-Jul-04 4:44

Shiva Prasad

27-Jul-04 4:44

Hi all,

an application gives stack overflow..as a workaround, increasing the
from 1MB to 16 MB stack size in the project setting solves the problem..

Is there any upper limit upto which the stack size can be increased..or any issue
will occur due to stack size raise..??

Is there any 3rd party freeware / share ware / paid tool which would display the
function stack in a multithreaded environment..Better than call stack in vc++ IDE..?

Any lights on this would be highly appreciated...

Thanks,

Shiva P

Keeping Window On Top

KingTermite27-Jul-04 3:04

KingTermite

27-Jul-04 3:04

I have this code snippet used to keep the window on the top.

<br />
  // Make this window stay on top, so it never leaves opertor's view.<br />
   SetWindowPos( &wndTopMost, 0,0,0,0, SWP_NOSIZE | SWP_NOMOVE | SWP_SHOWWINDOW );<br />

The problem is that is starts minimized...how can I ensure this window starts visible?

There are only 10 types of people in this world....those that understand binary, and those that do not.

Re: Keeping Window On Top

David Crow27-Jul-04 4:01

David Crow

27-Jul-04 4:01

KingTermite wrote:
The problem is that is starts minimized...how can I ensure this window starts visible?

So which is it, a window that starts non-minimized, one that is visible, or both?

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: Keeping Window On Top

KingTermite27-Jul-04 8:34

KingTermite

27-Jul-04 8:34

Sorry...I guess I did make that a bit unclear.

I didn't mean the window wasn't visible, just minimized. I want it to start non-minimized.

There are only 10 types of people in this world....those that understand binary, and those that do not.

Re: Keeping Window On Top

David Crow27-Jul-04 8:47

David Crow

27-Jul-04 8:47

Is it an SDI/MDI app, or a dialog-based app?

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: Keeping Window On Top

KingTermite27-Jul-04 10:52

KingTermite

27-Jul-04 10:52

Dialog.

There are only 10 types of people in this world....those that understand binary, and those that do not.

Re: Keeping Window On Top

David Crow28-Jul-04 3:46

David Crow

28-Jul-04 3:46

Are you making any calls to ShowWindow(), or does the dialog template have the WS_MINIMIZE style?

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

CDialog Help!

Pazzuzu27-Jul-04 1:10

Pazzuzu

27-Jul-04 1:10

Hi ,

I would like to send a message function from 1 Dialogue to another dialogue,Just to notify him that he has to do something.Is there any function like that existing inside the CDialog class.

Inside this function,would like to write "code"(UserDefined code),which the function should perform......

Thanks....

Re: CDialog Help!

Ivan Cachicatari27-Jul-04 4:06

Ivan Cachicatari

27-Jul-04 4:06

One question...

The another dialogue is inicializaed simultaneosly and in another class?

Ivan Cachicatari
www.latindevelopers.com

Re: CDialog Help!

David Crow27-Jul-04 4:06

David Crow

27-Jul-04 4:06

Pazzuzu wrote:
I would like to send a message function from 1 Dialogue to another dialogue...

Can you use SendMessage() or PostMessage()?

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: CDialog Help!

Pazzuzu27-Jul-04 4:22

Pazzuzu

27-Jul-04 4:22

The Problem for me is I have created different tabs deriving from a CDialog object. I have 2 command buttons "OK" & "Cancel" & they reside in a dialog window(Not part of tabs dialog)

class C_TabControl : public CTabCtrl
{
// Construction
public:
CDialog *m_tabPages[13]; // Here Iam creating my tabs

So when the user presses "OK" by changing something in the tabs,I want to send a "function call" from the " C_TabControl" object to the tab.

As the Tabs are derived from CDialog,I can't define a function in the tab & call it using m_tabPages[0].
the compiler will complain that the "userdefinedfunction" not defined in CDialog.

So was looking for a function in CDialog which I can override to accomplish this purpose.

Re: CDialog Help!

Pazzuzu27-Jul-04 5:11

Pazzuzu

27-Jul-04 5:11

Re: CDialog Help!

David Crow27-Jul-04 7:53

David Crow

27-Jul-04 7:53

What's wrong with:

class CMyDialog : public CDialog
{
public:
    userdefinedfunction();
};
 
class C_tabControl : public CTabCtrl
{
public:
    CMyDialog *m_tabPages[13];
};
 
m_tabPages[13]->userdefinedfunction();

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: CDialog Help!

Pazzuzu28-Jul-04 4:20

Pazzuzu

28-Jul-04 4:20

Thanks for your suggestion.Guess,Have to work in that direction.

Re: CDialog Help!

Jaime Stuardo27-Jul-04 5:09

Jaime Stuardo

27-Jul-04 5:09

SendMessage?

Are parameters/member variables safe for threading ?

Hesham Amin27-Jul-04 0:39

Hesham Amin

27-Jul-04 0:39

Hi i make 1 instance of CMyClass in the ThreadProc function and call Init member function :

int CMyClass::Init(int ID)<br />
{<br />
	m_ChID=ID;<br />
	int res=pInitChannel(m_ChID);<br />
<br />
	if(0==res)<br />
		return true;<br />
	else<br />
	{<br />
		ReportError(res);<br />
		return false;<br />
	}<br />
}

I know (and correct me if wrong) that the ID parameter and m_ChID are safe.
I mean that if i pass 0 from a thread and 1 from another then there is no chance that m_ChID member will have the same value 0 or 1 for both instances since m_ChID is not a shared variable..

the problem that arises that the library i call (which have the global pInitChannel function) should be thread safe but i get an error that indicates that I pass the same ID more than once (which is not allowed).

now the question is :
Am I wrong with my concepts or does the library i use have problems with multithreading ?

thank you for reading

How to add a message handler function to a control at run-time?

misterbear26-Jul-04 21:48

misterbear

26-Jul-04 21:48

hello,

I use MFC and new I need to create controls (buttons) on-the-fly and add message
handlers to them for the BN_CLICKED event at the time they are created. I see how
the messagemap functionality can add handlers for the controls that I already
have on my form, but what about dynamically created.
I do not wish to create an excessive amount of controls and just hide the
ones that are inappropriate at the time..

(cause: where di I set the limit as to what is a safe amount of controls then..)

thankful for any help I can get.

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.