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The Go programming language
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The Solaris network poller uses event ports, which are level-triggered. As such, it has to re-arm itself after each wakeup. The arming mechanism (which runs in its own thread) raced with the closing of a file descriptor happening in a different thread. When a network file descriptor is about to be closed, the network poller is awaken to give it a chance to remove its association with the file descriptor. Because the poller always re-armed itself, it raced with code that closed the descriptor. This change makes the network poller check before re-arming if the file descriptor is about to be closed, in which case it will ignore the re-arming request. It uses the per-PollDesc lock in order to serialize access to the PollDesc. This change also adds extensive documentation describing the Solaris implementation of the network poller. Fixes #7410. LGTM=dvyukov, iant R=golang-codereviews, bradfitz, iant, dvyukov, aram.h, gobot CC=golang-codereviews https://golang.org/cl/69190044 |
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This is the source code repository for the Go programming language. For documentation about how to install and use Go, visit http://golang.org/ or load doc/install-source.html in your web browser. After installing Go, you can view a nicely formatted doc/install-source.html by running godoc --http=:6060 and then visiting http://localhost:6060/doc/install/source. 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 README). 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.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 doc/install.html for more details.