go, branch weekly.2009-12-07

6l, 8l: make string buffer big enough for 8 chars (and then some)

2009-12-08T06:01:59Z

Fixes #221. R=ken2 https://golang.org/cl/165086

test/bench: faster fasta (mostly due to bufio fix)

2009-12-08T03:39:09Z

R=r https://golang.org/cl/165083

runtime: don't touch pages of memory unnecessarily.

2009-12-07T23:52:14Z

cuts working size for hello world from 6 MB to 1.2 MB. still some work to be done, but diminishing returns. R=r https://golang.org/cl/165080

runtime: introduce unsafe.New and unsafe.NewArray

2009-12-07T23:51:58Z

to provide functionality previously hacked in to reflect and gob. R=r https://golang.org/cl/165076

use a bootstrap array to avoid allocation for short vectors

2009-12-07T20:46:20Z

R=r https://golang.org/cl/165078

Remove copyBytes completely in favor of copy.

2009-12-07T19:31:56Z

R=r, rsc https://golang.org/cl/165068

pick off special one-byte case in copy. worth 2x in benchmarks (38ns->16ns).

2009-12-07T19:28:02Z

the one-item case could be generalized easily with no cost. worth considering. R=rsc CC=golang-dev, cw https://golang.org/cl/167044

the AST walker currently provides no way to find out how the

2009-12-07T18:33:45Z

nodes in the tree are nested with respect to one another. a simple change to the Visitor interface makes it possible to do this (for example to maintain a current node-depth, or a knowledge of the name of the current function). Visit(nil) is called at the end of a node's children; this make possible the channel-based interface below, amongst other possibilities. It is still just as simple to get the original behaviour - just return the same Visitor from Visit. Here are a couple of possible Visitor types. // closure-based type FVisitor func(n interface{}) FVisitor func (f FVisitor) Visit(n interface{}) Visitor { return f(n); } // channel-based type CVisitor chan Visit; type Visit struct { node interface{}; reply chan CVisitor; }; func (v CVisitor) Visit(n interface{}) Visitor { if n == nil { close(v); } else { reply := make(chan CVisitor); v <- Visit{n, reply}; r := <-reply; if r == nil { return nil; } return r; } return nil; } R=gri CC=rsc https://golang.org/cl/166047

changes necessary to get the new chameneosredux onto shootout.alioth.debian.org .

2009-12-07T18:06:51Z

it's now there: http://shootout.alioth.debian.org/u32q/benchmark.php?test=chameneosredux&lang=all&box=1! R=r, rsc CC=golang-dev https://golang.org/cl/167043

save a few ns by inlining (which mostly simplifies things anyway).

2009-12-06T23:01:07Z

a couple of cleanups. don't keep big buffers in the free list. R=rsc CC=golang-dev https://golang.org/cl/166078