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/* -----------------------------------------------------------------------------
*
* (c) The GHC Team 2005
*
* Machine-dependent time measurement functions
*
* ---------------------------------------------------------------------------*/
#include "Rts.h"
#include "GetTime.h"
#include <windows.h>
#ifdef HAVE_TIME_H
# include <time.h>
#endif
#define HNS_PER_SEC 10000000LL /* FILETIMES are in units of 100ns */
/* Convert FILETIMEs into secs */
static INLINE_ME Ticks
fileTimeToTicks(FILETIME ft)
{
Ticks t;
t = ((Ticks)ft.dwHighDateTime << 32) | ft.dwLowDateTime;
t = (t * TICKS_PER_SECOND) / HNS_PER_SEC;
return t;
}
static int is_win9x = -1;
static INLINE_ME rtsBool
isWin9x(void)
{
if (is_win9x < 0) {
/* figure out whether we're on a Win9x box or not. */
OSVERSIONINFO oi;
BOOL b;
/* Need to init the size field first.*/
oi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
b = GetVersionEx(&oi);
is_win9x = ( (b && (oi.dwPlatformId & VER_PLATFORM_WIN32_WINDOWS)) ? 1 : 0);
}
return is_win9x;
}
void
getProcessTimes(Ticks *user, Ticks *elapsed)
{
*user = getProcessCPUTime();
*elapsed = getProcessElapsedTime();
}
Ticks
getProcessCPUTime(void)
{
FILETIME creationTime, exitTime, userTime, kernelTime = {0,0};
if (isWin9x()) return getProcessElapsedTime();
if (!GetProcessTimes(GetCurrentProcess(), &creationTime,
&exitTime, &kernelTime, &userTime)) {
return 0;
}
return fileTimeToTicks(userTime);
}
Ticks
getProcessElapsedTime(void)
{
FILETIME system_time;
GetSystemTimeAsFileTime(&system_time);
return fileTimeToTicks(system_time);
}
Ticks
getThreadCPUTime(void)
{
FILETIME creationTime, exitTime, userTime, kernelTime = {0,0};
if (isWin9x()) return getProcessCPUTime();
if (!GetThreadTimes(GetCurrentThread(), &creationTime,
&exitTime, &kernelTime, &userTime)) {
return 0;
}
return fileTimeToTicks(userTime);
}
nat
getPageFaults(void)
{
/* ToDo (on NT): better, get this via the performance data
that's stored in the registry. */
return 0;
}
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