|
Hi Daniel! It's good hear from u!
Sorry, i was abit rush last night! But here is the requirment
<quote>
write a Win32 Console application that starts five threads, passing each a parameter which is the number of milliseconds that this thread is to simulate execution. The parameter must have a different value for each thread invocation, and should be in the range 20 to 40 seconds. You may predetermine these values, or determine them randomly. Your main thread should monitor these threads, outputting a digit every second indicating how many threads are still running. Your program should terminate after all five new threads have terminated.
I basically have done all of this but the result is as i explained above. Where as the first thread should run for 5 second it only run in 4, however other threads are running ok.
Do you notice any bugs or logical error??
Thanks in advance !!! 
|
|
|
|
|
tcuong wrote:
Do you notice any bugs or logical error??
No, the code looks fine. I assume it is a timing problem: As I wrote the timing precision on NT is about 10 msec. If your Sleep( 5000 ) actually returns after 4990 msec and maybe the WaitForMultipleObjects(..., 1000) returns after 1010 msec it may well happen you "loose" one active messsage of the thread.
To verify this you could modify the timings by small amounts. I'd also recommend to add printfs before and after the Sleep() statement and monitor the output sequence.
--
Daniel Lohmann
http://www.losoft.de
(Hey, this page is worth looking! You can find some free and handy NT tools there  )
|
|
|
|
|
Is there any other solutions? To conclude this thread, when dealing with thread, there is no way that the time allocated is run precisely when the thread executes , doesnt it???
Thanks !!
|
|
|
|
|
Yep.
A thread may get or loose the CPU at any time, therefore precise execution times are not possible in general.
--
Daniel Lohmann
http://www.losoft.de
(Hey, this page is worth looking! You can find some free and handy NT tools there )
|
|
|
|
|
As the others said, exact timings wont work!
Instead of monitoring each second, you can monitor twice each second. Then in the end; if you get an odd number (19 for the first thread for example) add 1 to it and divide it by 2. If you get an even number, then this means that the timings worked perfectly (which won't me the case for most of the time).
Mustafa Demirhan
http://www.macroangel.com
Sonork ID 100.9935:zoltrix
<nobr>They say I'm lazy but it takes all my time
|
|
|
|
|
Does anyone have any code where a text box
is highlightedin red when the mouse hovers
over it or when it has focus? There is a
demo project on codeguru, but it crashes
easily and that worries me.
Please, any response any one can give me
will be greatly appreciated.
Sincerely,
Danielle (an overworked graduate student)
|
|
|
|
|
Please don't laugh to hard but how do you except a command line parameter such as a flag?
Ex: MyProj.exe /s
Thanks Eric
|
|
|
|
|
In your main program put something like this:
void main(dataType flag)
{
switch flag:
case: s
printf("hello your input param is s"
break;
case:
.............
.............
}
whereas dataType is the dataType you want, such as integer or whatever flags you want. In the main program you can have switch case statement according to each input parameter
Hope this helps!!!
|
|
|
|
|
I knew that it was very simple. Thank you.
Eric
|
|
|
|
|
Very sorry for waisting your time 
I figured it out
void main(int argc, char* flag[])
{
// acrgc = number of string param
// flag[1] = first string param
// ...
// flag[n] = n string param
}
Thanks for your time though
Eric
|
|
|
|
|
how can i update the dialogs of my dialog application in my own class. Currently i've inherited from the *Dlg class, and even though the compiler returns no errors, i get a error for the command UpDateData(TRUE) while the program is running, saying Debug Assertion Failed.
Anyone know what the problem is?
|
|
|
|
|
Probably something wrong in the DDX variable mapping declared in ::DoDataExchange(CDataExchange* pDX).
Be sure to use the Dialog classwizard to add or modify those members. Also check if member types are adequate (MSDN MFC Technical Note can help for that).
Let's swallow a small raisin.
|
|
|
|
|
Will you be able to post your code ?? I think it's likely that the data that you're trying to use is no longer exist. This happens when you don't overide the OK button!!
|
|
|
|
|
I'm writing to a database using appendChunk. it just goes and keeps adding to the same database - instead of overwriting it. THere dont seem to be any parameters that I can set in the method. I open the database using the recordset.Open function and I didnt see anything there that I could set either to make the database get rewritten.
PLease help!
ns
|
|
|
|
|
Try setting that field to null first.
Joel Lucsy (jjlucsy@ameritech.net)
|
|
|
|
|
By default when I create propertysheets for my dialog they have Help button.How can I remove this button?
Mazy
"If I go crazy then will you still
Call me Superman
If I’m alive and well, will you be
There holding my hand
I’ll keep you by my side with
My superhuman might
Kryptonite"Kryptonite-3 Doors Down
|
|
|
|
|
In OnInitDialog(), do GetDlgItem(IDHELP)->ShowWindow(SW_HIDE);
---
Shog9
Actually I use to find learning in bars when drinking really useful.
It sort of makes a language liquid. - Colin Davies, Thinking in English?
|
|
|
|
|
Thank you Shog9.
Mazy
"If I go crazy then will you still
Call me Superman
If I’m alive and well, will you be
There holding my hand
I’ll keep you by my side with
My superhuman might
Kryptonite"Kryptonite-3 Doors Down
|
|
|
|
|
Anybody knows where i can download the OpenML SDK?
Kiddxin
|
|
|
|
|
Have you ever heard of a search engine? I recommend google. And, boy, does this lower the signal-to-noise ratio 
|
|
|
|
|
Oh,I'm searching it too .
Tell me when you find it out !
Thank you !
|
|
|
|
|
|
I have an MFC MDI program using VC6. When the application starts I want the initial child window to be maximized within the frame. I've tried ModifyStyle(0,WS_MAXIMIZE); in the OnActivateView() and added cs.style |= WS_MAXIMIZE; to the beginning of PreCreateWindow(); Any other ideas?
|
|
|
|
|
I don't know if this is the correct way, but in the ActivateFrame Method I set the SW_SHOMAXIMIZED flag, this does the job just for the intial activation of the window.
<br />
void CChildFrame::ActivateFrame(int nCmdShow)<br />
{<br />
nCmdShow = SW_SHOWMAXIMIZED;<br />
CMDIChildWnd::ActivateFrame(nCmdShow);<br />
}<br />
If you have more than one window in your MDI, i have noticed it will unmaximize when you switch to a new window.. I tried to get around this by using a ModifyStyle(NULL,WS_MAXIMIZE)
<br />
void CChildFrame::OnSetFocus(CWnd* pOldWnd) <br />
{<br />
CMDIChildWnd::OnSetFocus(pOldWnd);<br />
<br />
ModifyStyle(NULL,WS_MAXIMIZE);<br />
}<br />
As I said, I don't know if this is the correct way to do it.. Its just what I figured out while I was playing.. Please let me know if you find a better way.
-Rick
|
|
|
|
|
Thank you for your help. ActivateFrame() alone works in my program without the problem you described. My view is derived from CHtmlView, which is derived from CFormView. I created two instances of the same view during runtime (that is, I selected File | New), switched between them (Window | <view number="">) and both windows stayed maximized.
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
