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 "pe_image.h"
  16 #include "file.h"
  17 #include "task.h"
  18 #include "toolhelp.h"
  19 #include "debugtools.h"
  20
  21 DEFAULT_DEBUG_CHANNEL(win32)
  22
  23
  24 /*********************************************************************
  25  *      Process_ClockTimeToFileTime
  26  *      (olorin@fandra.org, 20-Sep-1998)
  27  *      Converts clock_t into FILETIME.
  28  *      Used by GetProcessTime.
  29  *      Differences to UnixTimeToFileTime:
  30  *          1) Divided by CLK_TCK
  31  *          2) Time is relative. There is no 'starting date', so there is
  32  *             no need in offset correction, like in UnixTimeToFileTime
  33  *      FIXME: This function should be moved to a more appropriate .c file
  34  *      FIXME: On floating point operations, it is assumed that
  35  *             floating values are truncated on convertion to integer.
  36  */
  37 void Process_ClockTimeToFileTime( clock_t unix_time, LPFILETIME filetime )
  38 {
  39     double td = (unix_time*10000000.0)/CLK_TCK;
  40     /* Yes, double, because long int might overflow here. */
  41 #if (SIZEOF_LONG_LONG >= 8)
  42     unsigned long long t = td;
  43     filetime->dwLowDateTime  = (UINT) t;
  44     filetime->dwHighDateTime = (UINT) (t >> 32);
  45 #else
  46     double divider = 1. * (1 << 16) * (1 << 16);
  47     filetime->dwHighDateTime = (UINT) (td / divider);
  48     filetime->dwLowDateTime  = (UINT) (td - filetime->dwHighDateTime*divider);
  49     /* using floor() produces wierd results, better leave this as it is
  50      * ( with (UINT32) convertion )
  51      */
  52 #endif
  53 }
  54
  55 /*********************************************************************
  56  *      GetProcessTimes                         [KERNEL32.262]
  57  *
  58  * FIXME: lpCreationTime, lpExitTime are NOT INITIALIZED.
  59  * olorin@fandra.org: Would be nice to substract the cpu time,
  60  *                    used by Wine at startup.
  61  *                    Also, there is a need to separate times
  62  *                    used by different applications.
  63  */
  64 BOOL WINAPI GetProcessTimes(
  65         HANDLE hprocess,LPFILETIME lpCreationTime,LPFILETIME lpExitTime,
  66         LPFILETIME lpKernelTime, LPFILETIME lpUserTime
  67 ) {
  68         struct tms tms;
  69
  70         times(&tms);
  71         Process_ClockTimeToFileTime(tms.tms_utime,lpUserTime);
  72         Process_ClockTimeToFileTime(tms.tms_stime,lpKernelTime);
  73         return TRUE;
  74 }
  75