f9e1adb713
This lifts the part of gcAssistAlloc that runs on the system stack to its own function in preparation for letting assists perform root jobs (notably stack scanning). This makes it easy to see that there are no references to the user stack once we've entered gcAssistAlloc1, which means it's safe to shrink the stack while in gcAssistAlloc1. This does not yet make assists perform root jobs, so it's not actually possible for the stack to shrink yet. That will happen in the next commit. The code in gcAssistAlloc1 is identical to the code that's currently passed in a closure to systemstack with one exception. Currently, we set the "completed" variable in the enclosing scope to indicate that the assist completed the mark phase. This is exactly the sort of cross-stack reference lifting this function is meant to prevent. We replace this variable with setting gp.param to nil or non-nil to indicate the completion status. Updates #15361. Change-Id: Iba7cfb758c781070a441aea86c0117b399a24dbd Reviewed-on: https://go-review.googlesource.com/32431 TryBot-Result: Gobot Gobot <gobot@golang.org> Run-TryBot: Austin Clements <austin@google.com> Reviewed-by: Rick Hudson <rlh@golang.org> |
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README.md
The Go Programming Language
Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.
For documentation about how to install and use Go, visit https://golang.org/ or load doc/install-source.html in your web browser.
Our canonical Git repository is located at https://go.googlesource.com/go. There is a mirror of the repository at https://github.com/golang/go.
Go is the work of hundreds of contributors. We appreciate your help!
To contribute, please read the contribution guidelines: https://golang.org/doc/contribute.html
Note that we do not accept pull requests and that we use the issue tracker for bug reports and proposals only. Please ask questions on https://forum.golangbridge.org or https://groups.google.com/forum/#!forum/golang-nuts.
Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.
--
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.
For example, if you extracted the tar file into $HOME/go, you might put the following in your .profile:
export GOROOT=$HOME/go
export PATH=$PATH:$GOROOT/bin
See https://golang.org/doc/install or doc/install.html for more details.