win32/process.c

   1 /*
   2  * Win32 kernel functions
   3  *
   4  * Copyright 1995 Martin von Loewis
   5  */
   6
   7 #include <string.h>
   8 #include <unistd.h>
   9 #include <sys/times.h>
  10 #include "winbase.h"
  11 #include "winerror.h"
  12 #include "heap.h"
  13 #include "thread.h"
  14 #include "process.h"
  15 #include "file.h"
  16 #include "task.h"
  17 #include "toolhelp.h"
  18 #include "debugtools.h"
  19
  20 DEFAULT_DEBUG_CHANNEL(win32);
  21
  22
  23 /*********************************************************************
  24  *      Process_ClockTimeToFileTime
  25  *      (olorin@fandra.org, 20-Sep-1998)
  26  *      Converts clock_t into FILETIME.
  27  *      Used by GetProcessTime.
  28  *      Differences to UnixTimeToFileTime:
  29  *          1) Divided by CLK_TCK
  30  *          2) Time is relative. There is no 'starting date', so there is
  31  *             no need in offset correction, like in UnixTimeToFileTime
  32  *      FIXME: This function should be moved to a more appropriate .c file
  33  *      FIXME: On floating point operations, it is assumed that
  34  *             floating values are truncated on conversion to integer.
  35  */
  36 void Process_ClockTimeToFileTime( clock_t unix_time, LPFILETIME filetime )
  37 {
  38     double td = (unix_time*10000000.0)/CLK_TCK;
  39     /* Yes, double, because long int might overflow here. */
  40 #if SIZEOF_LONG_LONG >= 8
  41     unsigned long long t = td;
  42     filetime->dwLowDateTime  = (UINT) t;
  43     filetime->dwHighDateTime = (UINT) (t >> 32);
  44 #else
  45     double divider = 1. * (1 << 16) * (1 << 16);
  46     filetime->dwHighDateTime = (UINT) (td / divider);
  47     filetime->dwLowDateTime  = (UINT) (td - filetime->dwHighDateTime*divider);
  48     /* using floor() produces wierd results, better leave this as it is
  49      * ( with (UINT32) convertion )
  50      */
  51 #endif
  52 }
  53
  54 /*********************************************************************
  55  *      GetProcessTimes                         [KERNEL32.262]
  56  *
  57  * FIXME: lpCreationTime, lpExitTime are NOT INITIALIZED.
  58  * olorin@fandra.org: Would be nice to substract the cpu time,
  59  *                    used by Wine at startup.
  60  *                    Also, there is a need to separate times
  61  *                    used by different applications.
  62  */
  63 BOOL WINAPI GetProcessTimes(
  64         HANDLE hprocess,LPFILETIME lpCreationTime,LPFILETIME lpExitTime,
  65         LPFILETIME lpKernelTime, LPFILETIME lpUserTime
  66 ) {
  67         struct tms tms;
  68
  69         times(&tms);
  70         Process_ClockTimeToFileTime(tms.tms_utime,lpUserTime);
  71         Process_ClockTimeToFileTime(tms.tms_stime,lpKernelTime);
  72         return TRUE;
  73 }
  74