db72b41bcd
Currently sudog.elem is never accessed concurrently, so in several cases we drop the channel lock just before reading/writing the sent/received value from/to sudog.elem. However, concurrent stack shrinking is going to have to adjust sudog.elem to point to the new stack, which means it needs a way to synchronize with accesses to sudog.elem. Hence, add sudog.elem to the fields protected by hchan.lock and scoot the unlocks down past the uses of sudog.elem. While we're here, better document the channel synchronization rules. For #12967. Change-Id: I3ad0ca71f0a74b0716c261aef21b2f7f13f74917 Reviewed-on: https://go-review.googlesource.com/20040 Reviewed-by: Keith Randall <khr@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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