e8337491aa
Currently we free cached stacks of dead Gs during STW stack root marking. We do this during STW because there's no way to take ownership of a particular dead G, so attempting to free a dead G's stack during concurrent stack root marking could race with reusing that G. However, we can do this concurrently if we take a completely different approach. One way to prevent reuse of a dead G is to remove it from the free G list. Hence, this adds a new fixed root marking task that simply removes all Gs from the list of dead Gs with cached stacks, frees their stacks, and then adds them to the list of dead Gs without cached stacks. This is also a necessary step toward rescanning only dirty stacks, since it eliminates another task from STW stack marking. Change-Id: Iefbad03078b284a2e7bf30fba397da4ca87fe095 Reviewed-on: https://go-review.googlesource.com/20665 Reviewed-by: Rick Hudson <rlh@golang.org> Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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The Go Programming Language
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Binary Distribution Notes
If you have just untarred a binary Go distribution, you need to set the environment variable $GOROOT to the full path of the go directory (the one containing this file). You can omit the variable if you unpack it into /usr/local/go, or if you rebuild from sources by running all.bash (see doc/install-source.html). You should also add the Go binary directory $GOROOT/bin to your shell's path.
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