/*
* Math.random() support, lifted from java.util.Random.java.
*/
static void
random_setSeed(JSRuntime *rt, int64 seed)
{
int64 tmp;
JSLL_I2L(tmp, 1000);
JSLL_DIV(seed, seed, tmp);
JSLL_XOR(tmp, seed, rt->rngMultiplier);
JSLL_AND(rt->rngSeed, tmp, rt->rngMask);
}
static void MacintoshInitializeTime(void)
{
uint64 upTime;
unsigned long currentLocalTimeSeconds,
startupTimeSeconds;
uint64 startupTimeMicroSeconds;
uint32 upTimeSeconds;
uint64 oneMillion, upTimeSecondsLong, microSecondsToSeconds;
DateTimeRec firstSecondOfUnixTime;
/*
* Figure out in local time what time the machine started up. This information can be added to
* upTime to figure out the current local time as well as GMT.
*/
Microseconds((UnsignedWide*)&upTime);
GetDateTime(¤tLocalTimeSeconds);
JSLL_I2L(microSecondsToSeconds, PRMJ_USEC_PER_SEC);
JSLL_DIV(upTimeSecondsLong, upTime, microSecondsToSeconds);
JSLL_L2I(upTimeSeconds, upTimeSecondsLong);
startupTimeSeconds = currentLocalTimeSeconds - upTimeSeconds;
/* Make sure that we normalize the macintosh base seconds to the unix base of January 1, 1970.
*/
firstSecondOfUnixTime.year = 1970;
firstSecondOfUnixTime.month = 1;
firstSecondOfUnixTime.day = 1;
firstSecondOfUnixTime.hour = 0;
firstSecondOfUnixTime.minute = 0;
firstSecondOfUnixTime.second = 0;
firstSecondOfUnixTime.dayOfWeek = 0;
DateToSeconds(&firstSecondOfUnixTime, &gJanuaryFirst1970Seconds);
startupTimeSeconds -= gJanuaryFirst1970Seconds;
/* Now convert the startup time into a wide so that we can figure out GMT and DST.
*/
JSLL_I2L(startupTimeMicroSeconds, startupTimeSeconds);
JSLL_I2L(oneMillion, PRMJ_USEC_PER_SEC);
JSLL_MUL(dstLocalBaseMicroseconds, oneMillion, startupTimeMicroSeconds);
}
/* Get the DST timezone offset for the time passed in */
JSInt64
PRMJ_DSTOffset(JSInt64 local_time)
{
JSInt64 us2s;
#ifdef XP_MAC
/*
* Convert the local time passed in to Macintosh epoch seconds. Use UTC utilities to convert
* to UTC time, then compare difference with our GMT offset. If they are the same, then
* DST must not be in effect for the input date/time.
*/
UInt32 macLocalSeconds = (local_time / PRMJ_USEC_PER_SEC) + gJanuaryFirst1970Seconds, utcSeconds;
ConvertLocalTimeToUTC(macLocalSeconds, &utcSeconds);
if ((utcSeconds - macLocalSeconds) == PRMJ_LocalGMTDifference())
return 0;
else {
JSInt64 dlsOffset;
JSLL_UI2L(us2s, PRMJ_USEC_PER_SEC);
JSLL_UI2L(dlsOffset, PRMJ_HOUR_SECONDS);
JSLL_MUL(dlsOffset, dlsOffset, us2s);
return dlsOffset;
}
#else
time_t local;
JSInt32 diff;
JSInt64 maxtimet;
struct tm tm;
PRMJTime prtm;
#ifndef HAVE_LOCALTIME_R
struct tm *ptm;
#endif
JSLL_UI2L(us2s, PRMJ_USEC_PER_SEC);
JSLL_DIV(local_time, local_time, us2s);
/* get the maximum of time_t value */
JSLL_UI2L(maxtimet,PRMJ_MAX_UNIX_TIMET);
if(JSLL_CMP(local_time,>,maxtimet)){
JSLL_UI2L(local_time,PRMJ_MAX_UNIX_TIMET);
} else if(!JSLL_GE_ZERO(local_time)){
/* Get the DST timezone offset for the time passed in */
JSInt64
PRMJ_DSTOffset(JSInt64 local_time)
{
JSInt64 us2s;
time_t local;
JSInt32 diff;
JSInt64 maxtimet;
struct tm tm;
PRMJTime prtm;
#ifndef HAVE_LOCALTIME_R
struct tm *ptm;
#endif
JSLL_UI2L(us2s, PRMJ_USEC_PER_SEC);
JSLL_DIV(local_time, local_time, us2s);
/* get the maximum of time_t value */
JSLL_UI2L(maxtimet,PRMJ_MAX_UNIX_TIMET);
if(JSLL_CMP(local_time,>,maxtimet)){
JSLL_UI2L(local_time,PRMJ_MAX_UNIX_TIMET);
} else if(!JSLL_GE_ZERO(local_time)){
JSInt64
PRMJ_Now(void)
{
#ifdef XP_OS2
JSInt64 s, us, ms2us, s2us;
struct timeb b;
#endif
#ifdef XP_WIN
JSInt64 s, us,
win2un = JSLL_INIT(0x19DB1DE, 0xD53E8000),
ten = JSLL_INIT(0, 10);
FILETIME time, midnight;
#endif
#if defined(XP_UNIX) || defined(XP_BEOS)
struct timeval tv;
JSInt64 s, us, s2us;
#endif /* XP_UNIX */
#ifdef XP_OS2
ftime(&b);
JSLL_UI2L(ms2us, PRMJ_USEC_PER_MSEC);
JSLL_UI2L(s2us, PRMJ_USEC_PER_SEC);
JSLL_UI2L(s, b.time);
JSLL_UI2L(us, b.millitm);
JSLL_MUL(us, us, ms2us);
JSLL_MUL(s, s, s2us);
JSLL_ADD(s, s, us);
return s;
#endif
#ifdef XP_WIN
/* The windows epoch is around 1600. The unix epoch is around 1970.
win2un is the difference (in windows time units which are 10 times
more precise than the JS time unit) */
GetSystemTimeAsFileTime(&time);
/* Win9x gets confused at midnight
http://support.microsoft.com/default.aspx?scid=KB;en-us;q224423
So if the low part (precision <8mins) is 0 then we get the time
again. */
if (!time.dwLowDateTime) {
GetSystemTimeAsFileTime(&midnight);
time.dwHighDateTime = midnight.dwHighDateTime;
}
JSLL_UI2L(s, time.dwHighDateTime);
JSLL_UI2L(us, time.dwLowDateTime);
JSLL_SHL(s, s, 32);
JSLL_ADD(s, s, us);
JSLL_SUB(s, s, win2un);
JSLL_DIV(s, s, ten);
return s;
#endif
#if defined(XP_UNIX) || defined(XP_BEOS)
#ifdef _SVID_GETTOD /* Defined only on Solaris, see Solaris <sys/types.h> */
gettimeofday(&tv);
#else
gettimeofday(&tv, 0);
#endif /* _SVID_GETTOD */
JSLL_UI2L(s2us, PRMJ_USEC_PER_SEC);
JSLL_UI2L(s, tv.tv_sec);
JSLL_UI2L(us, tv.tv_usec);
JSLL_MUL(s, s, s2us);
JSLL_ADD(s, s, us);
return s;
#endif /* XP_UNIX */
}
JSInt64
PRMJ_Now(void)
{
#ifdef XP_OS2
JSInt64 s, us, ms2us, s2us;
struct timeb b;
#endif
#ifdef XP_WIN
JSInt64 s, us,
win2un = JSLL_INIT(0x19DB1DE, 0xD53E8000),
ten = JSLL_INIT(0, 10);
FILETIME time, midnight;
#endif
#if defined(XP_UNIX) || defined(XP_BEOS)
struct timeval tv;
JSInt64 s, us, s2us;
#endif /* XP_UNIX */
#ifdef XP_MAC
JSUint64 upTime;
JSInt64 localTime;
JSInt64 gmtOffset;
JSInt64 dstOffset;
JSInt32 gmtDiff;
JSInt64 s2us;
#endif /* XP_MAC */
#ifdef XP_OS2
ftime(&b);
JSLL_UI2L(ms2us, PRMJ_USEC_PER_MSEC);
JSLL_UI2L(s2us, PRMJ_USEC_PER_SEC);
JSLL_UI2L(s, b.time);
JSLL_UI2L(us, b.millitm);
JSLL_MUL(us, us, ms2us);
JSLL_MUL(s, s, s2us);
JSLL_ADD(s, s, us);
return s;
#endif
#ifdef XP_WIN
/* The windows epoch is around 1600. The unix epoch is around 1970.
win2un is the difference (in windows time units which are 10 times
more precise than the JS time unit) */
GetSystemTimeAsFileTime(&time);
/* Win9x gets confused at midnight
http://support.microsoft.com/default.aspx?scid=KB;en-us;q224423
So if the low part (precision <8mins) is 0 then we get the time
again. */
if (!time.dwLowDateTime) {
GetSystemTimeAsFileTime(&midnight);
time.dwHighDateTime = midnight.dwHighDateTime;
}
JSLL_UI2L(s, time.dwHighDateTime);
JSLL_UI2L(us, time.dwLowDateTime);
JSLL_SHL(s, s, 32);
JSLL_ADD(s, s, us);
JSLL_SUB(s, s, win2un);
JSLL_DIV(s, s, ten);
return s;
#endif
#if defined(XP_UNIX) || defined(XP_BEOS)
#ifdef _SVID_GETTOD /* Defined only on Solaris, see Solaris <sys/types.h> */
gettimeofday(&tv);
#else
gettimeofday(&tv, 0);
#endif /* _SVID_GETTOD */
JSLL_UI2L(s2us, PRMJ_USEC_PER_SEC);
JSLL_UI2L(s, tv.tv_sec);
JSLL_UI2L(us, tv.tv_usec);
JSLL_MUL(s, s, s2us);
JSLL_ADD(s, s, us);
return s;
#endif /* XP_UNIX */
#ifdef XP_MAC
JSLL_UI2L(localTime,0);
gmtDiff = PRMJ_LocalGMTDifference();
JSLL_I2L(gmtOffset,gmtDiff);
JSLL_UI2L(s2us, PRMJ_USEC_PER_SEC);
JSLL_MUL(gmtOffset,gmtOffset,s2us);
/* don't adjust for DST since it sets ctime and gmtime off on the MAC */
Microseconds((UnsignedWide*)&upTime);
JSLL_ADD(localTime,localTime,gmtOffset);
JSLL_ADD(localTime,localTime, dstLocalBaseMicroseconds);
JSLL_ADD(localTime,localTime, upTime);
dstOffset = PRMJ_DSTOffset(localTime);
JSLL_SUB(localTime,localTime,dstOffset);
return *((JSUint64 *)&localTime);
#endif /* XP_MAC */
}
