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time: change nsec back to int32

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The garbage collector and stack scans are good enough now.

Fixes #7446.

LGTM=r
R=r, dvyukov
CC=golang-codereviews, mdempsky, mtj
https://golang.org/cl/112870046
This commit is contained in:
Russ Cox 2014-07-16 19:26:45 -04:00
parent 055dfc204c
commit 26d0f75f2b
1 changed files with 6 additions and 13 deletions
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19
src/pkg/time/time.go
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@ -39,14 +39,7 @@ type Time struct {
// nsec specifies a non-negative nanosecond
// offset within the second named by Seconds.
// It must be in the range [0, 999999999].
//
// It is declared as uintptr instead of int32 or uint32
// to avoid garbage collector aliasing in the case where
// on a 64-bit system the int32 or uint32 field is written
// over the low half of a pointer, creating another pointer.
// TODO(rsc): When the garbage collector is completely
// precise, change back to int32.
nsec uintptr
nsec int32
// loc specifies the Location that should be used to
// determine the minute, hour, month, day, and year
@ -619,7 +612,7 @@ func (t Time) Add(d Duration) Time {
t.sec--
nsec += 1e9
}
t.nsec = uintptr(nsec)
t.nsec = nsec
return t
}
@ -782,7 +775,7 @@ func now() (sec int64, nsec int32)
// Now returns the current local time.
func Now() Time {
sec, nsec := now()
return Time{sec + unixToInternal, uintptr(nsec), Local}
return Time{sec + unixToInternal, nsec, Local}
}
// UTC returns t with the location set to UTC.
@ -899,7 +892,7 @@ func (t *Time) UnmarshalBinary(data []byte) error {
int64(buf[3])<<32 | int64(buf[2])<<40 | int64(buf[1])<<48 | int64(buf[0])<<56
buf = buf[8:]
t.nsec = uintptr(int32(buf[3]) | int32(buf[2])<<8 | int32(buf[1])<<16 | int32(buf[0])<<24)
t.nsec = int32(buf[3]) | int32(buf[2])<<8 | int32(buf[1])<<16 | int32(buf[0])<<24
buf = buf[4:]
offset := int(int16(buf[1])|int16(buf[0])<<8) * 60
@ -978,7 +971,7 @@ func Unix(sec int64, nsec int64) Time {
sec--
}
}
return Time{sec + unixToInternal, uintptr(nsec), Local}
return Time{sec + unixToInternal, int32(nsec), Local}
}
func isLeap(year int) bool {
@ -1087,7 +1080,7 @@ func Date(year int, month Month, day, hour, min, sec, nsec int, loc *Location) T
unix -= int64(offset)
}
return Time{unix + unixToInternal, uintptr(nsec), loc}
return Time{unix + unixToInternal, int32(nsec), loc}
}
// Truncate returns the result of rounding t down to a multiple of d (since the zero time).