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syscall: unify NsecToTime{spec,val}, fix for times < 1970

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All the implementations of NsecToTimespec and NsecToTimeval were the
same other than types. Write a single version that uses
GOARCH/GOOS-specific setTimespec and setTimeval functions to handle the
types.

The logic in NsecToTimespec and NsecToTimeval caused times before 1970
to have a negative usec/nsec. The Linux kernel requires that usec
contain a positive number; for consistency, we do this for both
NsecToTimespec and NsecToTimeval.

Change-Id: I525eaba2e7cdb00cb57fa00182dabf19fec298ae
Reviewed-on: https://go-review.googlesource.com/30826
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
This commit is contained in:
Ian Lance Taylor 2016-10-11 21:04:16 -07:00 • committed by Russ Cox
parent 6ca48f710f
commit 6c517df4da
25 changed files with 125 additions and 216 deletions
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13
src/syscall/syscall_linux_arm64.go
View file

@ -71,17 +71,12 @@ func Lstat(path string, stat *Stat_t) (err error) {
//sysnb Gettimeofday(tv *Timeval) (err error)
//sysnb Time(t *Time_t) (tt Time_t, err error)
func NsecToTimespec(nsec int64) (ts Timespec) {
ts.Sec = nsec / 1e9
ts.Nsec = nsec % 1e9
return
func setTimespec(sec, nsec int64) Timespec {
return Timespec{Sec: sec, Nsec: nsec}
}
func NsecToTimeval(nsec int64) (tv Timeval) {
nsec += 999 // round up to microsecond
tv.Sec = nsec / 1e9
tv.Usec = nsec % 1e9 / 1e3
return
func setTimeval(sec, usec int64) Timeval {
return Timeval{Sec: sec, Usec: usec}
}
func Pipe(p []int) (err error) {