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WebSVN – planix.SVN – Blame – /os/branches/feature_tlsv12/sys/src/ape/lib/bsd/gettimeofday.c – Rev 2

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#include <sys/types.h>
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#include <time.h>
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#include <sys/time.h>
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#include <string.h>
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#include "sys9.h"
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typedef unsigned long long uvlong;
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typedef long long vlong;
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typedef unsigned char uchar;
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static uvlong order = 0x0001020304050607ULL;
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static void
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be2vlong(vlong *to, uchar *f)
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{
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	uchar *t, *o;
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	int i;
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	t = (uchar*)to;
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	o = (uchar*)&order;
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	for(i = 0; i < 8; i++)
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		t[o[i]] = f[i];
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}
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int
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gettimeofday(struct timeval *tp, struct timezone *tzp)
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{
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	uchar b[8];
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	vlong t;
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	int opened;
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	static int fd = -1;
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	opened = 0;
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	for(;;) {
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		if(fd < 0)
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			if(opened++ ||
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			    (fd = _OPEN("/dev/bintime", OREAD|OCEXEC)) < 0)
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				return 0;
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		if(_PREAD(fd, b, sizeof b, 0) == sizeof b)
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			break;		/* leave fd open for future use */
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		/* short read, perhaps try again */
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		_CLOSE(fd);
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		fd = -1;
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	}
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	be2vlong(&t, b);
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	tp->tv_sec = t/1000000000;
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	tp->tv_usec = (t/1000)%1000000;
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	if(tzp) {
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		tzp->tz_minuteswest = 4*60;	/* BUG */
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		tzp->tz_dsttime = 1;
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	}
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	return 0;
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}