reactos/rosapps/sysutils/utils/tickcount/tickcount.c

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/* $Id$
*/
/*
tickcount -- Display the kernel tick count (or any tick count passed as an
argument or as input) in human-readable format
This is public domain software
*/
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <tchar.h>
#include <windows.h>
typedef __int64 int64_;
typedef unsigned __int64 uint64_;
#define TICKS_YEAR (TICKS_DAY * ((uint64_)365))
#define TICKS_MONTH (TICKS_DAY * ((uint64_)30))
#define TICKS_WEEK (TICKS_DAY * ((uint64_)7))
#define TICKS_DAY (TICKS_HOUR * ((uint64_)24))
#define TICKS_HOUR (TICKS_MINUTE * ((uint64_)60))
#define TICKS_MINUTE (TICKS_SECOND * ((uint64_)60))
#define TICKS_SECOND ((uint64_)1000)
#define SLICES_COUNT (sizeof(ticks_per_slice) / sizeof(ticks_per_slice[0]))
uint64_ ticks_per_slice[] =
{
TICKS_YEAR,
TICKS_MONTH,
TICKS_WEEK,
TICKS_DAY,
TICKS_HOUR,
TICKS_MINUTE,
TICKS_SECOND,
1
};
_TCHAR * slice_names_singular[SLICES_COUNT] =
{
_T("year"),
_T("month"),
_T("week"),
_T("day"),
_T("hour"),
_T("minute"),
_T("second"),
_T("millisecond")
};
_TCHAR * slice_names_plural[SLICES_COUNT] =
{
_T("years"),
_T("months"),
_T("weeks"),
_T("days"),
_T("hours"),
_T("minutes"),
_T("seconds"),
_T("milliseconds")
};
void print_uptime
(
uint64_ tickcount,
uint64_ prevsliceval,
_TCHAR * prevsliceunit,
int curslice
)
{
uint64_ tick_cur = tickcount / ticks_per_slice[curslice];
uint64_ tick_residual = tickcount % ticks_per_slice[curslice];
assert(tick_cur <= (~((uint64_)0)));
if(tick_residual == 0)
{
/* the current slice is the last */
if(prevsliceval == 0)
{
/* the current slice is the only */
_tprintf
(
_T("%u %s"),
(unsigned)tick_cur,
(tick_cur == 1 ? slice_names_singular : slice_names_plural)[curslice]
);
}
else
{
/* the current slice is the last, and there's a previous slice */
assert(prevsliceunit);
/* print the previous and the current slice, and terminate */
_tprintf
(
_T("%u %s %s %u %s"),
(unsigned)prevsliceval,
prevsliceunit,
_T("and"),
(unsigned)tick_cur,
(tick_cur == 1 ? slice_names_singular : slice_names_plural)[curslice]
);
}
}
else if(tick_cur != 0)
{
/* the current slice is not the last, and non-zero */
if(prevsliceval != 0)
{
/* there's a previous slice: print it */
assert(prevsliceunit);
_tprintf(_T("%u %s, "), (unsigned)prevsliceval, prevsliceunit);
}
/* recursion on the next slice size, storing the current slice */
print_uptime
(
tick_residual,
tick_cur,
(tick_cur == 1 ? slice_names_singular : slice_names_plural)[curslice],
curslice + 1
);
}
else
{
/*
the current slice is not the last, and zero: recursion, remembering the
previous non-zero slice
*/
print_uptime(tick_residual, prevsliceval, prevsliceunit, curslice + 1);
}
}
int parse_print(const _TCHAR * str)
{
int64_ tickcount;
tickcount = _ttoi64(str);
if(tickcount < 0)
tickcount = - tickcount;
else if(tickcount == 0)
return 1;
print_uptime(tickcount, 0, NULL, 0);
_puttc(_T('\n'), stdout);
return 0;
}
int _tmain(int argc, _TCHAR * argv[])
{
int r;
if(argc <= 1)
{
print_uptime((uint64_)GetTickCount(), 0, NULL, 0);
_puttc(_T('\n'), stdout);
}
else if(argc == 2 && argv[1][0] == _T('-') && argv[1][1] == 0)
{
while(!feof(stdin))
{
_TCHAR buf[23];
_TCHAR * str;
str = _fgetts(buf, 22, stdin);
if(str == NULL)
return 0;
if((r = parse_print(str)) != 0)
return r;
}
}
else
{
int i;
for(i = 1; i < argc; ++ i)
if((r = parse_print(argv[i])) != 0)
return r;
}
return 0;
}