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76 lines
2.3 KiB
C
76 lines
2.3 KiB
C
/*
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* Win32 kernel functions
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*
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* Copyright 1995 Martin von Loewis
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*/
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#include <string.h>
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#include <unistd.h>
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#include <sys/times.h>
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#include "winbase.h"
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#include "winerror.h"
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#include "heap.h"
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#include "thread.h"
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#include "process.h"
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#include "pe_image.h"
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#include "file.h"
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#include "task.h"
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#include "toolhelp.h"
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#include "debugtools.h"
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DEFAULT_DEBUG_CHANNEL(win32)
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/*********************************************************************
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* Process_ClockTimeToFileTime
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* (olorin@fandra.org, 20-Sep-1998)
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* Converts clock_t into FILETIME.
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* Used by GetProcessTime.
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* Differences to UnixTimeToFileTime:
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* 1) Divided by CLK_TCK
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* 2) Time is relative. There is no 'starting date', so there is
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* no need in offset correction, like in UnixTimeToFileTime
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* FIXME: This function should be moved to a more appropriate .c file
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* FIXME: On floating point operations, it is assumed that
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* floating values are truncated on conversion to integer.
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*/
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void Process_ClockTimeToFileTime( clock_t unix_time, LPFILETIME filetime )
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{
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double td = (unix_time*10000000.0)/CLK_TCK;
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/* Yes, double, because long int might overflow here. */
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#if SIZEOF_LONG_LONG >= 8
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unsigned long long t = td;
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filetime->dwLowDateTime = (UINT) t;
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filetime->dwHighDateTime = (UINT) (t >> 32);
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#else
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double divider = 1. * (1 << 16) * (1 << 16);
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filetime->dwHighDateTime = (UINT) (td / divider);
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filetime->dwLowDateTime = (UINT) (td - filetime->dwHighDateTime*divider);
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/* using floor() produces wierd results, better leave this as it is
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* ( with (UINT32) convertion )
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*/
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#endif
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}
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/*********************************************************************
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* GetProcessTimes [KERNEL32.262]
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*
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* FIXME: lpCreationTime, lpExitTime are NOT INITIALIZED.
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* olorin@fandra.org: Would be nice to substract the cpu time,
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* used by Wine at startup.
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* Also, there is a need to separate times
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* used by different applications.
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*/
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BOOL WINAPI GetProcessTimes(
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HANDLE hprocess,LPFILETIME lpCreationTime,LPFILETIME lpExitTime,
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LPFILETIME lpKernelTime, LPFILETIME lpUserTime
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) {
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struct tms tms;
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times(&tms);
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Process_ClockTimeToFileTime(tms.tms_utime,lpUserTime);
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Process_ClockTimeToFileTime(tms.tms_stime,lpKernelTime);
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return TRUE;
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}
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