wine/win32/process.c
1999-05-23 19:57:42 +00:00

75 lines
2.3 KiB
C

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