current proccess information

[Siapran]

infoware provides a way to get the current memory usage for the whole system, but I'm wondering if it would be reasonable to add information for the current process (CPU/RAM usage, possibly more?)

[nabijaczleweli]

This would correspond to getrusage(2) on UNIX and GetProcessTimes/GetProcessMemoryInfo/GetProcessIoCounters on Win32.

struct timeval ru_utime; /* user time used */
struct timeval ru_stime; /* system time used */
long ru_maxrss;          /* integral max resident set size */
long ru_ixrss;           /* integral shared text memory size */
long ru_idrss;           /* integral unshared data size */
long ru_isrss;           /* integral unshared stack size */
long ru_minflt;          /* page reclaims */
long ru_majflt;          /* page faults */
long ru_nswap;           /* swaps */
long ru_inblock;         /* block input operations */
long ru_oublock;         /* block output operations */
long ru_msgsnd;          /* messages sent */
long ru_msgrcv;          /* messages received */
long ru_nsignals;        /* signals received */
long ru_nvcsw;           /* voluntary context switches */
long ru_nivcsw;          /* involuntary context switches */

(where ru_ixrss/ru_idrss/ru_isrss/ru_msgsnd/ru_msgrcv/ru_nsignals/ru_nswap aren't real under linux)

---

BOOL GetProcessTimes(
  [in]  HANDLE     hProcess,
  [out] LPFILETIME lpCreationTime,
  [out] LPFILETIME lpExitTime,
  [out] LPFILETIME lpKernelTime,
  [out] LPFILETIME lpUserTime
);

BOOL GetProcessMemoryInfo(
  [in]  HANDLE                   Process,
  [out] PPROCESS_MEMORY_COUNTERS ppsmemCounters,
  [in]  DWORD                    cb
);
typedef struct _PROCESS_MEMORY_COUNTERS_EX {
  DWORD  cb;
  DWORD  PageFaultCount;
  SIZE_T PeakWorkingSetSize;
  SIZE_T WorkingSetSize;
  SIZE_T QuotaPeakPagedPoolUsage;
  SIZE_T QuotaPagedPoolUsage;
  SIZE_T QuotaPeakNonPagedPoolUsage;
  SIZE_T QuotaNonPagedPoolUsage;
  SIZE_T PagefileUsage;
  SIZE_T PeakPagefileUsage;
  SIZE_T PrivateUsage;
} PROCESS_MEMORY_COUNTERS_EX;

typedef struct _IO_COUNTERS {
  ULONGLONG ReadOperationCount;
  ULONGLONG WriteOperationCount;
  ULONGLONG OtherOperationCount;
  ULONGLONG ReadTransferCount;
  ULONGLONG WriteTransferCount;
  ULONGLONG OtherTransferCount;
} IO_COUNTERS;

and the intersexion of these is

lpUserTime   = ru_utime
lpKernelTime = ru_stime
PageFaultCount     = ru_minflt + ru_majflt
PeakWorkingSetSize = ru_maxrss
ReadOperationCount  = ru_inblock
WriteOperationCount = ru_oublock

Context switches (ru_nvcsw + ru_nivcsw) don't exist at all as a cumulative thing on Windows, you'd have to sample.

Would these be useful to your application?

[Siapran]

I think so. thank you for the explanation.

[nabijaczleweli]

Can you try #84?

[Siapran]

yes, I will try it today