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8e765da941
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Damian Gryski 8e765da941 runtime: add runtime.cputicks() and seed fastrand with it 
This patch adds a function to get the current cpu ticks.  This is
deemed to be 'sufficiently random' to use to seed fastrand to mitigate
the algorithmic complexity attacks on the hash table implementation.

On AMD64 we use the RDTSC instruction.  For 386, this instruction,
while valid, is not recognized by 8a so I've inserted the opcode by
hand.  For ARM, this routine is currently stubbed to return a constant
0 value.

Future work: update 8a to recognize RDTSC.

Fixes #2630.

R=rsc
CC=golang-dev
https://golang.org/cl/5606048
2012-02-02 14:09:27 -05:00
doc os/signal: move to exp/signal. 2012-02-02 09:08:50 +11:00
include build: add include files for Plan 9 2012-01-31 18:14:44 -08:00
lib codereview: ignore test files during 'hg gofmt' 2012-01-30 13:41:29 -05:00
misc gophertool: fix link to the build status dashboard 2012-02-01 20:53:31 -08:00
src runtime: add runtime.cputicks() and seed fastrand with it 2012-02-02 14:09:27 -05:00
test test: add import test that caused an incorrect gccgo error 2012-02-02 11:04:09 -08:00
.hgignore gc, cc: avoid using the wrong library when building the compilers 2012-02-01 04:14:37 -08:00
.hgtags tag weekly.2012-01-27 2012-01-27 17:53:11 +11:00
AUTHORS A+C: Damian Gryski (individual CLA) 2012-01-31 00:30:44 -05:00
CONTRIBUTORS A+C: Damian Gryski (individual CLA) 2012-01-31 00:30:44 -05:00
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.