d70b0fe6c4
The current logic in gcDrain conflates non-blocking with preemptible draining for root jobs. As a result, if you do a non-blocking (but *not* preemptible) drain, like dedicated workers do, the root job drain will stop if preempted and fall through to heap marking jobs, which won't stop until it fails to get a heap marking job. This commit fixes the condition on root marking jobs so they only stop when preempted if the drain is preemptible. Coincidentally, this also fixes a nil pointer dereference if we call gcDrain with gcDrainNoBlock and without a user G, since it tries to get the preempt flag from the nil user G. This combination never happens right now, but will in the future. Change-Id: Ia910ec20a9b46237f7926969144a33b1b4a7b2f9 Reviewed-on: https://go-review.googlesource.com/32291 Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Russ Cox <rsc@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.