Can you show us the code ? It would help Are you trying to set a variable of type time.Location ? Or are you trying to set time.Local to something else ?
Like Ian said, if you want to change the location of a specific time value, use the In method. > But there are lots of place that time.Location used by time package of golang. For example: time.Now(), time.locabs() > I can’t change them. I don't understand. Use time.Now() uses the time.Local variable. But all you need to do is wrap the setting of time.Local value with a mutex. Why is it not possible to do that ? On Friday, 30 November 2018 11:31:42 UTC+5:30, Ian Lance Taylor wrote: > > On Thu, Nov 29, 2018 at 9:47 PM <zhangzh...@gmail.com <javascript:>> > wrote: > > > > My go version is 1.11. > > > > When I set time.Location, then … > > > > ================== > > WARNING: DATA RACE > > Write at 0x000002e275d0 by main goroutine: > > vcs.taiyouxi.net/platform/planx/timeutil.SetTimeLocal() > > /Users/zhangzhen/serverthreekingdom/src/ > vcs.taiyouxi.net/platform/planx/timeutil/time_util.go:51 +0xb4 > > vcs.taiyouxi.net/platform/planx/timeutil.init.0() > > /Users/zhangzhen/serverthreekingdom/src/ > vcs.taiyouxi.net/platform/planx/timeutil/time_util.go:42 +0x43 > > vcs.taiyouxi.net/platform/planx/timeutil.init() > > <autogenerated>:1 +0xd0 > > vcs.taiyouxi.net/jws2/common/time.init() > > <autogenerated>:1 +0xa6 > > vcs.taiyouxi.net/jws2/gamex/account/account.init() > > <autogenerated>:1 +0xa6 > > vcs.taiyouxi.net/jws2/gamex/logics.init() > > <autogenerated>:1 +0xa6 > > vcs.taiyouxi.net/jws2/gamex/cmds/gamemode.init() > > <autogenerated>:1 +0xa6 > > main.init() > > <autogenerated>:1 +0xa6 > > > > Previous read at 0x000002e275d0 by goroutine 8: > > time.Now() > > /Users/zhangzhen/.gvm/gos/go1.11/src/time/time.go:1060 +0xcf > > time.sendTime() > > /Users/zhangzhen/.gvm/gos/go1.11/src/time/sleep.go:141 +0x44 > > > > Goroutine 8 (running) created at: > > runtime.(*timersBucket).addtimerLocked() > > /Users/zhangzhen/.gvm/gos/go1.11/src/runtime/time.go:170 +0x113 > > > vcs.taiyouxi.net/vendor/github.com/siddontang/go/timingwheel.NewTimingWheel() > > /Users/zhangzhen/serverthreekingdom/src/ > vcs.taiyouxi.net/vendor/github.com/siddontang/go/timingwheel/timingwheel.go:39 > > +0x2a0 > > vcs.taiyouxi.net/platform/planx/util.init() > > /Users/zhangzhen/serverthreekingdom/src/ > vcs.taiyouxi.net/platform/planx/util/timer_helper.go:10 +0xf3 > > vcs.taiyouxi.net/platform/planx/metrics.init() > > <autogenerated>:1 +0xbf > > vcs.taiyouxi.net/jws2/gamex/cmds/gamemode.init() > > <autogenerated>:1 +0x9c > > main.init() > > <autogenerated>:1 +0xa6 > > ================== > > > > The feature of golang is goroutine, and it is a normal situation that > get time in different goroutine. > > But only can set time.Location in one goroutine. So the Data Race is > inevitable. > > > > > > And there is the replay from agnivade 3 > > > > “It is not a bug. Please synchronize access to time.Location using > synchronization primitives in the sync andsync/atomic packages.” > > > > > > But there are lots of place that time.Location used by time package of > golang. For example: time.Now(), time.locabs() > > I can’t change them. > > > > > > So, What should I do ? Please help me. > > You said time.Location. Do you mean time.Local? It's true that you > should never change time.Local. Why do you want to? If you want to > change the location of a specific time.Time value, call the In method. > > Ian > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
