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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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18
winsup/cygwin/hires.h
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@@ -13,11 +13,18 @@ details. */
#include <mmsystem.h>
/* Largest delay in ms for sleep and alarm calls.
Allow actual delay to exceed requested delay by 10 s.
Express as multiple of 1000 (i.e. seconds) + max resolution
The tv_sec argument in timeval structures cannot exceed
HIRES_DELAY_MAX / 1000 - 1, so that adding fractional part
and rounding won't exceed HIRES_DELAY_MAX */
#define HIRES_DELAY_MAX (((UINT_MAX - 10000) / 1000) * 1000) + 10
class hires_base
{
protected:
int inited;
virtual void prime () {}
public:
virtual LONGLONG usecs (bool justdelta) {return 0LL;}
virtual ~hires_base () {}
@@ -37,9 +44,14 @@ class hires_ms : hires_base
{
DWORD initime_ms;
LARGE_INTEGER initime_us;
UINT minperiod;
void prime ();
static UINT minperiod;
UINT prime ();
public:
LONGLONG usecs (bool justdelta);
UINT dmsecs () { return timeGetTime (); }
UINT resolution () { return minperiod ?: prime (); }
};
extern hires_ms gtod;
#endif /*__HIRES_H__*/