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Configure the application for 'constant' behavior. That is some well-defined repeatable behavior that should USE memory but not LEAK memory.
Set up performance monitor to watch this application's working set size and private bytes. Chart over a day or two, or until application halts.
Then see if that application has a constantly growing use of the working set size and private bytes. You can probably assume it has a memory leak.
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To find memory leaks using just Visual stidio,-
is unappropriate complex task.
visual studio does only small chek and nothing more,
so slightly complex errors remains hardly found.
Best and easy way to use specialized program like
BoundsChecker,
or something like this.
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I like to drop in MMGR. Add it to your project, then read the comments in mmgr.cpp to use it. It will record every allocation without adding the header file to your project files, but it won't record the file and line number of the allocation unless the mmgr.h is included. It can record every memory allocation or only mem leaks in a text file that's easy to read. It helped me spot places where I allocated an array of characters, eg. I used
delete item; on an array called item instead of
delete[] item; and things like that. There are plenty of asserts in there with comments that tell you what you did wrong to cause the assertion.
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FWIW, I do not think that kind of error causes a memory leak directly (only indirectly). Missing the [] operator causes only the first object in the array to have its destructor called, but the memory block itself is still freed.
For example, if you missed the brackets on an array of simple types, there should be no memory leaks. However, if the array was an array of complex objects that themselves allocate memory, then that might indirectly cause leaks because the destructors will not be called on objects 2-n in the array.
Peace!
-=- James
If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Tip for new SUV drivers: Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
DeleteFXPFiles & CheckFavorites (Please rate this post!)
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This may be a dumb question, but why can you not just use Task Manager, and look at the memory consumption of the process in question?
Over time, if leaks do exist, you should be able to see an increase in total memory usage over time.
Peace!
-=- James
If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Tip for new SUV drivers: Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
DeleteFXPFiles & CheckFavorites (Please rate this post!)
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yes, this is a "memory leak" 101 thing.
I was looking for something that will do that for me and have some reporting instead of me having to look at it all the time.
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Hi Everyone,
I am faced with a bit of a problem. I suspect it is a problem only because of my non-existant knowledge of c/c++.
I need to use a third party SDK to be able to control and/or monitor some telephony hardware from a popular vendor.
My problem is that I have to do this from a .Net environment (C#) but the SDK file are .lib files. It is said that it is dynamically compiled (what that means I have no idea).
Can anyone possibly tell me how I could use it from C# and if it's impossible, how I can wrap it in normal dll's (so I can use Dllimport) as normal.
Thanks and Regards,
Phi?
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Hello,
I assume that you have the C++ header files for the libraries. You can do / try the following:
<list> Set up a new project for a DLL. Here you write new headers that export the functions from the library. You create a DLL from here.
You write a managed wrapper for the library and create a .NET assembly for that.
Hope this helps 
Behind every great black man...
... is the police. - Conspiracy brother
Blog[^]
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Thanks for your reply.
Yes I do have the header files.
So am I right in saying that I would need some C/C++ skills for this?
I feared that as I have very limited skills in that area and the header files' code seems very complex for me.
Regards,
Phi?
-- modified at 8:52 Monday 31st October, 2005
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André Trollip wrote: I feared that as I have very limited skills in that area and the header files' code seems very complex for me.
don't worry André, headers are - most of the time - only declarations.
what can obfuscate the understanding (especially with a dll header) can be function pointers. i suggest you so having a look at the msdn on that topic, of search the web for it (but just tell you it's not so hard and everything will be ok  ).
TOXCCT >>> GEII power
[toxcct][VisualCalc]
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André Trollip wrote: So am I right in saying that I would need some C/C++ skills for this?
You don't need 'skills' as in n years experience. You do need to know a little bit about the topic. Search google or CP for writing DLL's. There are some articles here about the topic.
Maybe you should try to call the vendor if they can build the library for you. This wouldn't be a crazy request since you paid for the API anyway.
Behind every great black man...
... is the police. - Conspiracy brother
Blog[^]
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Why Visual Studio 6 C++ begins slowly editing for multy-project solution?
VS6 sp6.
One project being edited as text in studio -
for inserting new string - works very fast,
(on my P4-3000, 1GB)
but if I edit this project in solution that includes 15 projects,
inserting one line to 200 lined file
takes 1-2 seconds,
it is so long!
why so happen?
How to correct it?
thanks
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Is your visual studio linked to some SSC ? Source control ?
If so, you can try removing it, This can speed up loading and editiing speed.
-prakash
Learning Symbian
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No, it is not linkd to versioning systems,
but only to BoundsChecker.
But with swithed off all options.
This program - can do this slow behavior ?
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vgrigor1 wrote: but only to BoundsChecker.
But with swithed off all options.
This program - can do this slow behavior ?
I have not used boundschecker, so no idea.
-prakash
Learning Symbian
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Try to remove all the breakpoints in all projects, this is a killer too from some reason.
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You might try the following...
Close your project, then delete the .ncb, .aps, and .clw files. Reopen the project and try again.
The .ncb file in particular can grow quite large as you edit code, (and the .aps grows with resources). Therefore the more you add/edit without deleting these file can slow down VS considerably.
Hope that helps.
Karl - WK5M
PP-ASEL-IA (N43CS)
<kmedcalf@ev1.net>
PGP Key: 0xDB02E193
PGP Key Fingerprint: 8F06 5A2E 2735 892B 821C 871A 0411 94EA DB02 E193
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I tried deleting .ncb file,
it did not helped.
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Hi,
is it possible to store the content (text+format) of a CRichEditCtrl to a variable and serialize it later?
I need this because I have an Array (CObArray) with my class derived from CObject. Each item in this array should store a content of a RichEdit....
Thanks for your help...!
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Yes, its possible for serializing the contents of a CRichEditCtrl.
Just get the text and its format in a CString and serialize that CString. While loading get that string and display that one.
If the replies helps you, rate them.
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But how can I put the content of a CString to my CRichEditCtrl?
following the part I put my text from CRichEditCtrl to a CString
<br />
static DWORD CALLBACK MyStreamOutCallback(DWORD dwCookie, LPBYTE pbBuff, LONG cb, LONG *pcb)<br />
{<br />
<br />
CString *pTempString = (CString*) dwCookie;<br />
<br />
pTempString->AppendFormat("%s",pbBuff);<br />
<br />
*pcb = pTempString->GetLength();<br />
<br />
return 0;<br />
}<br />
void CMyTestDlg::OnBnClickedButton5()<br />
{<br />
EDITSTREAM es;<br />
<br />
es.dwCookie = (DWORD) &m_szRTF;<br />
es.pfnCallback = MyStreamOutCallback; <br />
m_rtfAuswertung.StreamOut(SF_RTF, es);<br />
<br />
}<br />
<br />
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I believe you'll want to use CRichEditCtrl::StreamOut(SF_RTF, ...) for this. Simply getting the text via GetWindowText() won't work as it will lose the formatting.
"Take only what you need and leave the land as you found it." - Native American Proverb
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Can someone help me turn this into c++ code. I thought I had it but I keep getting errors. What am I doing wrong? N is an exponent.
Payment = Rate * (1 + Rate)N
-------------------- * L
((1 + Rate)N – 1)
Here is my code:
double payment=(mrate*(1+mrate)* exp (n)/((1+mrate)* exp(n)-1))*l;
BINARY
-- modified at 3:22 Monday 31st October, 2005
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