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The Go programming language
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Mallocgc must be atomic wrt GC, but for performance reasons don't acquirem/releasem on fast path. The code does not have split stack checks, so it can't be preempted by GC. Functions like roundup/add are inlined. And onM/racemalloc are nosplit. Also add debug code that checks these assumptions. benchmark old ns/op new ns/op delta BenchmarkMalloc8 20.5 17.2 -16.10% BenchmarkMalloc16 29.5 27.0 -8.47% BenchmarkMallocTypeInfo8 31.5 27.6 -12.38% BenchmarkMallocTypeInfo16 34.7 30.9 -10.95% LGTM=khr R=golang-codereviews, khr CC=golang-codereviews, rlh, rsc https://golang.org/cl/123100043 |
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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.