Memory Status / determine virtual memory usage of a process

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6 total messages Started by Uli Thu, 05 Oct 2006 13:07

#3104

Author: Uli
Date: Thu, 05 Oct 2006 13:07

19 lines
1768 bytes

Hello,

is there a way to determine the memory-status of a specific process in the 
way TaskManager does it? That means retrieving the amount of physical and 
virtual memory usage.

I played around with  the Toolhelp functions in conjunction with 
Heap32ListFirst/Heap32ListNext and Heap32First/Heap32Next but however, the 
calculated amount of memory usage based on these functions (adding up the 
portions of LF32_FIXED / LF32_FREE / LF32_MOVABLE) does not fit to the 
values shown in TaskManager. Additionally there's no way to distinguish 
between physical and virtual memory chunks when using these functions. Also 
the iteration through all the heap-chunks seems to be rather slow ...

So, is there a better and more reliable way to do this? (Where does 
TaskManager get the information from?)

Thanks,
Uli.

Re: Memory Status / determine virtual memory usage of a process

#3105

Author: Bob Gonder
Date: Thu, 05 Oct 2006 19:22

7 lines
1309 bytes

Uli wrote:

>is there a way to determine the memory-status of a specific process in the 
>way TaskManager does it? That means retrieving the amount of physical and 
>virtual memory usage.

Are you looking for GlobalMemoryStatus()  ?

Re: Memory Status / determine virtual memory usage of a process

#3107

Author: Uli
Date: Fri, 06 Oct 2006 06:25

18 lines
1684 bytes

No. I know about the GlobalMemoryStatus() function.

As I wrote, I want to determine the memory status (usage) of a specific 
process in a fast way programatically. I want (respectively I expect) to get 
the same values which are shown in Windows TaskManager in the tab-sheet 
"Processes".

"Bob Gonder" <notbg@notmindspring.invalid> schrieb im Newsbeitrag 
news:opmai2t3e9fes14t37l55mbrea9si9rans@4ax.com...
> Uli wrote:
>
>>is there a way to determine the memory-status of a specific process in the
>>way TaskManager does it? That means retrieving the amount of physical and
>>virtual memory usage.
>
> Are you looking for GlobalMemoryStatus()  ?
>
>

Re: Memory Status / determine virtual memory usage of a process

#2476

Author: Sam S. Firouz
Date: Thu, 22 Feb 2007 18:36

29 lines
2073 bytes

Check out the GetProcessMemoryInfo API.

Sam



"Uli" <nospam@nospam.de> wrote in message 
news:4525f6e8@newsgroups.borland.com...
> No. I know about the GlobalMemoryStatus() function.
>
> As I wrote, I want to determine the memory status (usage) of a specific 
> process in a fast way programatically. I want (respectively I expect) to 
> get the same values which are shown in Windows TaskManager in the 
> tab-sheet "Processes".
>
> "Bob Gonder" <notbg@notmindspring.invalid> schrieb im Newsbeitrag 
> news:opmai2t3e9fes14t37l55mbrea9si9rans@4ax.com...
>> Uli wrote:
>>
>>>is there a way to determine the memory-status of a specific process in 
>>>the
>>>way TaskManager does it? That means retrieving the amount of physical and
>>>virtual memory usage.
>>
>> Are you looking for GlobalMemoryStatus()  ?
>>
>>
>
>

Re: Memory Status / determine virtual memory usage of a process

#2168

Author: ADC GmbH
Date: Thu, 19 Apr 2007 09:20

49 lines
2641 bytes

Sam S. Firouz schrieb:
> Check out the GetProcessMemoryInfo API.
> 
> Sam
> 
> 
> 
> "Uli" <nospam@nospam.de> wrote in message 
> news:4525f6e8@newsgroups.borland.com...
>> No. I know about the GlobalMemoryStatus() function.
>>
>> As I wrote, I want to determine the memory status (usage) of a 
>> specific process in a fast way programatically. I want (respectively I 
>> expect) to get the same values which are shown in Windows TaskManager 
>> in the tab-sheet "Processes".
>>
>> "Bob Gonder" <notbg@notmindspring.invalid> schrieb im Newsbeitrag 
>> news:opmai2t3e9fes14t37l55mbrea9si9rans@4ax.com...
>>> Uli wrote:
>>>
>>>> is there a way to determine the memory-status of a specific process 
>>>> in the
>>>> way TaskManager does it? That means retrieving the amount of 
>>>> physical and
>>>> virtual memory usage.
>>>
>>> Are you looking for GlobalMemoryStatus()  ?
>>>
>>>
>>
>>
> 
I have the same problem and I tried to use the following code:

PROCESS_MEMORY_COUNTERS lMemInfo;
HANDLE lProcHandle;
DWORD  lProcID = GetProcessId(Application->Handle);

lProcHandle = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, 
false, lProcID );
GetProcessMemoryInfo(lProcHandle, &lMemInfo, sizeof(lMemInfo));
CloseHandle(lProcHandle);

It fails because the GetProcessId return NULL (what handle do I have to 
use) and the second problem is that I don't know which values of the 
result structure I have to use (e.g. adding for the correct memory usage).

Has anybody a code example?
Thanks, Soeren

Re: Memory Status / determine virtual memory usage of a process

#2169

Author: Bob Gonder
Date: Thu, 19 Apr 2007 14:09

29 lines
2069 bytes

ADC GmbH wrote:

>I have the same problem and I tried to use the following code:
>
>PROCESS_MEMORY_COUNTERS lMemInfo;
>HANDLE lProcHandle;
>DWORD  lProcID = GetProcessId(Application->Handle);
>It fails because the GetProcessId return NULL (what handle do I have to 
>use)

Try using GetCurrentProcessId() instead.

>lProcHandle = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, 
>false, lProcID );
>GetProcessMemoryInfo(lProcHandle, &lMemInfo, sizeof(lMemInfo));
>CloseHandle(lProcHandle);


And try simplifing it altogether:

	PROCESS_MEMORY_COUNTERS	lMemInfo;
	GetProcessMemoryInfo( GetCurrentProcess(),
			&lMemInfo, sizeof(lMemInfo));

> and the second problem is that I don't know which values of the 
>result structure I have to use (e.g. adding for the correct memory usage).

Depends on what exactly you want to know.
See "Process Memory Usage Information" in the BDS Help.

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