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The Go programming language
93dde6b0e6
The implementation does not grab the lock, if Once is already initalized. Benchmark results on HP Z600 (2 x Xeon E5620, 8 HT cores, 2.40GHz) are as follows: benchmark old ns/op new ns/op delta sync_test.BenchmarkOnce 187.00 14.00 -92.51% sync_test.BenchmarkOnce-2 909.00 21.40 -97.65% sync_test.BenchmarkOnce-4 3684.00 20.90 -99.43% sync_test.BenchmarkOnce-8 5987.00 23.00 -99.62% sync_test.BenchmarkOnce-16 5051.00 21.60 -99.57% R=bradfitz, rsc CC=golang-dev https://golang.org/cl/4641066 |
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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.html in your web browser.
After installing Go, you can view a nicely formatted
doc/install.html by running godoc --http=:6060
and then visiting http://localhost:6060/doc/install.html.
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.