On Mon, Aug 5, 2019 at 9:20 AM B Carr <buc...@gmail.com> wrote: > > > > On Monday, August 5, 2019 at 8:52:41 AM UTC-6, burak serdar wrote: >> >> On Mon, Aug 5, 2019 at 8:47 AM B Carr <buc...@gmail.com> wrote: >> > >> > Is it safe to say that environment variables (accessible to all >> > goroutines) also live in the data segment? >> >> No. >> >> When you say "environment variables", do you mean OS env variables, or >> the variables visible to a goroutine? >> >> If you're talking about the variables visible to a goroutine, where >> the variable lives depends on how it is declared and allocated. >> >> If the variable is allocated at compile time (like a global var/struct >> initialized with a literal) it lives in data segment. >> >> If the variable is allocated dynamically using new(), or it is >> declared in a function and it escapes, it lives on the heap. > > > Oh. I'm talking about env variables which a goroutine sets by using > os.Setenv() which to me implies OS env variables. Are those env variables > accessible by all goroutines regardless of which goroutine set the env > variable? Would such env variables be available to newer goroutines that spin > up? I think the answer to this is "Yes", based on a response I got to another > thread.
Those env variables belong to the process. All gorountines share them. If you're setting env variables from goroutines, you might want to think about thread safety of setenv. > > I'm apparently being too black/white in my thinking about where things get > put into memory and your explanations are helping to get my mind right. > > -- > 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. > To view this discussion on the web visit > https://groups.google.com/d/msgid/golang-nuts/e064b3a9-19f1-48ca-8fab-e438a737b889%40googlegroups.com. -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/CAMV2RqpoMgOxGtVEHUmpKva%3D7nJHvANOUSW5uWHUDAg%2BvZC-ow%40mail.gmail.com.
