BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Memory Status / determine virtual memory usage of a process          BorlandTalk.com Forum Index -> C++ Builder (Native API) View previous topic :: View next topic   Author Message Uli Guest Posted: Thu Oct 05, 2006 6:07 pm    Post subject: Memory Status / determine virtual memory usage of a process 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. Back to top Bob Gonder Guest Posted: Fri Oct 06, 2006 12:22 am    Post subject: Re: Memory Status / determine virtual memory usage of a proc Uli wrote: Quote: 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() ? Back to top Uli Guest Posted: Fri Oct 06, 2006 8:10 am    Post subject: Re: Memory Status / determine virtual memory usage of a proc 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 (AT) notmindspring (DOT) invalid> schrieb im Newsbeitrag news:opmai2t3e9fes14t37l55mbrea9si9rans (AT) 4ax (DOT) com... Quote: 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() ? Back to top Sam S. Firouz Guest Posted: Fri Feb 23, 2007 12:36 am    Post subject: Re: Memory Status / determine virtual memory usage of a proc Check out the GetProcessMemoryInfo API. Sam "Uli" <nospam (AT) nospam (DOT) de> wrote in message news:4525f6e8 (AT) newsgroups (DOT) borland.com... Quote: 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 (AT) notmindspring (DOT) invalid> schrieb im Newsbeitrag news:opmai2t3e9fes14t37l55mbrea9si9rans (AT) 4ax (DOT) 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() ? Back to top ADC GmbH Guest Posted: Thu Apr 19, 2007 2:20 pm    Post subject: Re: Memory Status / determine virtual memory usage of a proc Sam S. Firouz schrieb: Quote: Check out the GetProcessMemoryInfo API. Sam "Uli" <nospam (AT) nospam (DOT) de> wrote in message news:4525f6e8 (AT) newsgroups (DOT) 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 (AT) notmindspring (DOT) invalid> schrieb im Newsbeitrag news:opmai2t3e9fes14t37l55mbrea9si9rans (AT) 4ax (DOT) 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 Back to top Bob Gonder Guest Posted: Thu Apr 19, 2007 7:09 pm    Post subject: Re: Memory Status / determine virtual memory usage of a proc ADC GmbH wrote: Quote: 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. Quote: 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)); Quote: 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. Back to top ADC GmbH Guest Posted: Thu Apr 26, 2007 2:01 am    Post subject: Re: Memory Status / determine virtual memory usage of a proc Bob Gonder schrieb: Quote: 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. Your code works fine, this is exactly what I needed. Thank you very much! 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