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ee24bfc058
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Dmitriy Vyukov ee24bfc058 runtime: unify mutex code across OSes 
The change introduces 2 generic mutex implementations
(futex- and semaphore-based). Each OS chooses a suitable mutex
implementation and implements few callbacks (e.g. futex wait/wake).
The CL reduces code duplication, extends some optimizations available
only on Linux/Windows to other OSes and provides ground
for futher optimizations. Chan finalizers are finally eliminated.

(Linux/amd64, 8 HT cores)
benchmark                      old      new
BenchmarkChanContended         83.6     77.8 ns/op
BenchmarkChanContended-2       341      328 ns/op
BenchmarkChanContended-4       382      383 ns/op
BenchmarkChanContended-8       390      374 ns/op
BenchmarkChanContended-16      313      291 ns/op

(Darwin/amd64, 2 cores)
benchmark                      old      new
BenchmarkChanContended         159      172 ns/op
BenchmarkChanContended-2       6735     263 ns/op
BenchmarkChanContended-4       10384    255 ns/op
BenchmarkChanCreation          1174     407 ns/op
BenchmarkChanCreation-2        4007     254 ns/op
BenchmarkChanCreation-4        4029     246 ns/op

R=rsc, jsing, hectorchu
CC=golang-dev
https://golang.org/cl/5140043
2011-11-02 16:42:01 +03:00
doc spec: delete spurious article 2011-11-01 20:57:17 -07:00
include gopack: change archive file name length back to 16 2011-11-01 00:29:16 -04:00
lib codereview: show LGTMs in hg p 2011-10-19 15:08:33 -04:00
misc non-pkg: gofix -r error -force=error 2011-11-01 22:06:05 -04:00
src runtime: unify mutex code across OSes 2011-11-02 16:42:01 +03:00
test non-pkg: gofix -r error -force=error 2011-11-01 22:06:05 -04:00
.hgignore .hgignore: ignore src/pkg/exp/ebnflint/ebnflint 2011-10-26 22:22:33 +11:00
.hgtags tag weekly.2011-11-02 2011-11-02 12:01:51 +09:00
AUTHORS A+C: Alexander Reece (individual CLA) 2011-10-31 13:59:04 -04:00
CONTRIBUTORS A+C: Alexander Reece (individual CLA) 2011-10-31 13:59:04 -04:00
favicon.ico add a favicon plus a couple of hi-res versions of gordon 2009-10-26 10:13:07 -07:00
LICENSE LICENSE: separate, change PATENTS text 2010-12-06 16:31:59 -05:00
PATENTS LICENSE: separate, change PATENTS text 2010-12-06 16:31:59 -05:00
README build: update, streamline documentation for new $GOBIN 2010-08-24 20:00:50 -04:00
robots.txt godoc: serve robots.txt raw 2011-02-19 05:46:20 +11:00

README 

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.