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* signal.cc (nanosleep): Improve test for valid values. Round delay up to

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resolution.  Fix test for negative remainder.  Use timeGetTime through gtod.
(sleep): Round up return value.  Christopher Faylor <cgf@redhat.com>
* hires.h (HIRES_DELAY_MAX): Define.
(hires_ms::minperiod): Declare static.
(hires_ms::resolution): New.
(hires_ms::dmsecs): New.
(hires_ms::prime): Return UINT.
(gtod): Declare.
* times.cc (hires_ms::prime): Always calculate minperiod and set it to 1 in
case of failure.  Return minperiod.
(hires_ms::resolution): Define.
(hires_ms::~hires_ms): Delete.
(hires_ms::usecs): Check minperiod to prime.
(gtod) Define as global.
This commit is contained in:
Christopher Faylor
2003-09-07 05:18:01 +00:00
parent 6cce721b15
commit ed2287adcd
5 changed files with 77 additions and 32 deletions
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47
winsup/cygwin/times.cc
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@@ -142,11 +142,13 @@ totimeval (struct timeval *dst, FILETIME *src, int sub, int flag)
dst->tv_sec = x / (long long) (1e6);
}
hires_ms gtod;
UINT NO_COPY hires_ms::minperiod;
/* FIXME: Make thread safe */
extern "C" int
gettimeofday (struct timeval *tv, struct timezone *tz)
{
static hires_ms gtod;
static bool tzflag;
LONGLONG now = gtod.usecs (false);
if (now == (LONGLONG) -1)
@@ -620,37 +622,42 @@ hires_us::usecs (bool justdelta)
return justdelta ? now.QuadPart : primed_ft.QuadPart + now.QuadPart;
}
void
UINT
hires_ms::prime ()
{
TIMECAPS tc;
FILETIME f;
int priority = GetThreadPriority (GetCurrentThread ());
SetThreadPriority (GetCurrentThread (), THREAD_PRIORITY_TIME_CRITICAL);
if (timeGetDevCaps (&tc, sizeof (tc)) != TIMERR_NOERROR)
minperiod = 0;
else
if (!minperiod)
if (timeGetDevCaps (&tc, sizeof (tc)) != TIMERR_NOERROR)
minperiod = 1;
else
{
minperiod = min (max (tc.wPeriodMin, 1), tc.wPeriodMax);
timeBeginPeriod (minperiod);
}
if (!inited)
{
minperiod = min (max (tc.wPeriodMin, 1), tc.wPeriodMax);
timeBeginPeriod (minperiod);
int priority = GetThreadPriority (GetCurrentThread ());
SetThreadPriority (GetCurrentThread (), THREAD_PRIORITY_TIME_CRITICAL);
initime_ms = timeGetTime ();
GetSystemTimeAsFileTime (&f);
SetThreadPriority (GetCurrentThread (), priority);
inited = 1;
initime_us.HighPart = f.dwHighDateTime;
initime_us.LowPart = f.dwLowDateTime;
initime_us.QuadPart -= FACTOR;
initime_us.QuadPart /= 10;
}
initime_ms = timeGetTime ();
GetSystemTimeAsFileTime (&f);
SetThreadPriority (GetCurrentThread (), priority);
inited = 1;
initime_us.HighPart = f.dwHighDateTime;
initime_us.LowPart = f.dwLowDateTime;
initime_us.QuadPart -= FACTOR;
initime_us.QuadPart /= 10;
return minperiod;
}
LONGLONG
hires_ms::usecs (bool justdelta)
{
if (!inited)
if (!minperiod) /* NO_COPY variable */
prime ();
DWORD now = timeGetTime ();
// FIXME: Not sure how this will handle the 49.71 day wrap around