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Dmitriy Vyukov 86da989ee5 runtime: introduce helper persistentalloc() function
It is a caching wrapper around SysAlloc() that can allocate small chunks.
Use it for symtab allocations. Reduces number of symtab walks from 4 to 3
(reduces buildfuncs time from 10ms to 7.5ms on a large binary,
reduces initial heap size by 680K on the same binary).
Also can be used for type info allocation, itab allocation.
There are also several places in GC where we do the same thing,
they can be changed to use persistentalloc().
Also can be used in FixAlloc, because each instance of FixAlloc allocates
in 128K regions, which is too eager.
Reincarnation of committed and rolled back https://golang.org/cl/9805043
The latent bugs that it revealed are fixed:
https://golang.org/cl/9837049
https://golang.org/cl/9778048

R=golang-dev, khr
CC=golang-dev
https://golang.org/cl/9778049
2013-05-31 10:42:30 +04:00
api api: update next.txt 2013-05-21 09:11:11 -07:00
doc doc/go1.2.txt: AllocsPerRun now quantized 2013-05-30 12:41:20 -04:00
include include: add a README file 2013-05-22 18:51:15 +08:00
lib codereview.py: improve error message when user is not a committer 2013-05-22 16:27:39 -07:00
misc misc/dist: remove lingering ~ file 2013-05-30 12:11:17 +10:00
src runtime: introduce helper persistentalloc() function 2013-05-31 10:42:30 +04:00
test test/bench/shootout/timing.log: update to Go 1.1 2013-05-23 17:57:28 -07:00
.hgignore build: update Makefile to track source code dependencies better 2012-03-13 03:31:11 +08:00
.hgtags tag go1.1 2013-05-13 13:04:08 -07:00
AUTHORS A+C: John Shahid (individual CLA) 2013-05-29 11:18:05 -04:00
CONTRIBUTORS A+C: John Shahid (individual CLA) 2013-05-29 11:18:05 -04:00
favicon.ico godoc: update favicon 2012-10-11 17:02:36 +11:00
LICENSE doc: update licensing text one more time 2012-03-27 15:09:13 +11:00
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

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.