Commits · df644489322609ef3555eda8d6e8a1f4ccd95672 · go / golang

03 May, 2012 2 commits
- test: add bug436, valid code that crashed gccgo · df644489
  Ian Lance Taylor authored May 03, 2012
```
R=golang-dev, bsiegert, rsc
CC=golang-dev
https://golang.org/cl/6158046
```
  df644489
- cmd/dist: remove stray src/pkg/runtime/z* when cleaning · 52ec4aa2
  Shenghou Ma authored May 03, 2012
```
R=golang-dev, bradfitz, dave, rsc, lstoakes, rsc
CC=golang-dev
https://golang.org/cl/6180044
```
  52ec4aa2
02 May, 2012 10 commits

misc/dashboard/codereview: add copyright notices to Go files · 7a77645a
Andrew Gerrand authored May 02, 2012
```
R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/6177043
```
7a77645a

cmd/cc: add PREFETCH built-in (like SET, USED) · d42495aa

Russ Cox authored May 02, 2012

This makes it possible to inline the prefetch of upcoming
memory addresses during garbage collection, instead of
needing to flush registers, make a function call, and
reload registers.  On garbage collection-heavy workloads,
this results in a 5% speedup.

Fixes #3493.

R=dvyukov, ken, r, dave
CC=golang-dev
https://golang.org/cl/5990066

d42495aa

exp/locale/collate: fixed two bugs uncovered by regression tests. · 10838165

Marcel van Lohuizen authored May 02, 2012

The first bug was that tertiary ignorables had the same colElem as
implicit colElems, yielding unexpected results. The current encoding
ensures that a non-implicit colElem is never 0.  This fix uncovered
another bug of the trie that indexed incorrectly into the null block.
This was caused by an unfinished optimization that would avoid the
need to max out the most-significant bits of continuation bytes.
This bug was also present in the trie used in exp/norm and has been
fixed there as well. The appearence of the bug was rare, as the lower
blocks happened to be nearly nil.

R=r
CC=golang-dev
https://golang.org/cl/6127070

10838165

cmd/gc: test for issue 3552 · 81d96215
Luuk van Dijk authored May 02, 2012
```
R=rsc
CC=golang-dev
https://golang.org/cl/6128051
```
81d96215
runtime: avoid unnecessary zeroization of huge memory blocks · c1c851bb
Dmitriy Vyukov authored May 02, 2012
```
+move zeroization out of the heap mutex

R=golang-dev, iant, rsc
CC=golang-dev
https://golang.org/cl/6094050
```
c1c851bb
os/signal: run windows TestCtrlBreak during build · 0d55d983
Alex Brainman authored May 02, 2012
```
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6136054
```
0d55d983
os: conform to Go 1 API on Plan 9 · 90626864
Anthony Martin authored May 02, 2012
```
R=golang-dev, r, bradfitz, r
CC=golang-dev
https://golang.org/cl/6117062
```
90626864
build: dist-based build for Plan 9 · 38590329
Anthony Martin authored May 02, 2012
```
R=rsc, iant, iant, seed
CC=golang-dev
https://golang.org/cl/5608059
```
38590329
misc/dashboard/codereview: LGTM favicon · ce30769c
Rob Pike authored May 02, 2012
```
R=dsymonds
CC=golang-dev
https://golang.org/cl/6158043
```
ce30769c

bytes: add assembly version of Equal for ARM · d472d3fa

Dave Cheney authored May 02, 2012

BenchmarkEqual32                       662          159  -75.98%
BenchmarkEqual4K                     76545        13719  -82.08%
BenchmarkEqual4M                  90136700     23588870  -73.83%
BenchmarkEqual64M               2147483647   1419616000  -42.63%

BenchmarkEqual32                     48.32       201.15    4.16x
BenchmarkEqual4K                     53.51       298.56    5.58x
BenchmarkEqual4M                     46.53       177.81    3.82x
BenchmarkEqual64M                    27.12        47.27    1.74x

R=golang-dev, qyzhai, minux.ma, rsc, iant, nigeltao
CC=golang-dev
https://golang.org/cl/6118049

d472d3fa

01 May, 2012 7 commits

cgo: rename C names for Go types to avoid conflicting with package · 82e30c68
Ian Lance Taylor authored May 01, 2012
```
Fixes #3371.

R=rsc, bsiegert, r, mtj, iant
CC=golang-dev
https://golang.org/cl/6131060
```
82e30c68
misc/dashboard/codereview: preserve CL ordering. · cc9a5c3b
David Symonds authored May 01, 2012
```
R=r
CC=golang-dev
https://golang.org/cl/6136056
```
cc9a5c3b
compress/flate: add a copy overrun test. · 86a91539
Nigel Tao authored May 01, 2012
```
R=rsc, r
CC=golang-dev
https://golang.org/cl/6143043
```
86a91539
misc/dashboard/codereview: de-dup LGTMs. · 83aa040c
David Symonds authored May 01, 2012
```
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6127066
```
83aa040c
encoding/json: don't match field name if a JSON struct tag is present. · c3c8e35a
David Symonds authored May 01, 2012
```
Fixes #3566.

R=rsc
CC=golang-dev
https://golang.org/cl/6139048
```
c3c8e35a

misc/dashboard/codereview: send mail immediately, and fill in time.Time fields. · dae2992c

David Symonds authored May 01, 2012

If we delay the mail sending, we can't send as the current user.
If we don't fill in the time.Time fields, datastore.Put will fail
because the zero time.Time value is out of its range.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6136053

dae2992c

compress/flate: optimize history-copy decoding. · 4de15a5c

Nigel Tao authored May 01, 2012

The forwardCopy function could be re-written in asm, and the copyHuff
method could probably be rolled into huffmanBlock and copyHist, but
I'm leaving those changes for future CLs.

compress/flate benchmarks:
benchmark                                 old ns/op    new ns/op    delta
BenchmarkDecoderBestSpeed1K                  385327       435140  +12.93%
BenchmarkDecoderBestSpeed10K                1245190      1062112  -14.70%
BenchmarkDecoderBestSpeed100K               8512365      5833680  -31.47%
BenchmarkDecoderDefaultCompression1K         382225       421301  +10.22%
BenchmarkDecoderDefaultCompression10K        867950       613890  -29.27%
BenchmarkDecoderDefaultCompression100K      5658240      2466726  -56.40%
BenchmarkDecoderBestCompression1K            383760       421634   +9.87%
BenchmarkDecoderBestCompression10K           867743       614671  -29.16%
BenchmarkDecoderBestCompression100K         5660160      2464996  -56.45%

image/png benchmarks:
benchmark                       old ns/op    new ns/op    delta
BenchmarkDecodeGray               2540834      2389624   -5.95%
BenchmarkDecodeNRGBAGradient     10052700      9534565   -5.15%
BenchmarkDecodeNRGBAOpaque        8704710      8163430   -6.22%
BenchmarkDecodePaletted           1458779      1325017   -9.17%
BenchmarkDecodeRGB                7183606      6794668   -5.41%

Wall time for Denis Cheremisov's PNG-decoding program given in
https://groups.google.com/group/golang-nuts/browse_thread/thread/22aa8a05040fdd49
Before: 3.07s
After:  2.32s
Delta:  -24%

Before profile:
Total: 304 samples
         159  52.3%  52.3%      251  82.6% compress/flate.(*decompressor).huffmanBlock
          58  19.1%  71.4%       76  25.0% compress/flate.(*decompressor).huffSym
          32  10.5%  81.9%       32  10.5% hash/adler32.update
          16   5.3%  87.2%       22   7.2% bufio.(*Reader).ReadByte
          16   5.3%  92.4%       37  12.2% compress/flate.(*decompressor).moreBits
           7   2.3%  94.7%        7   2.3% hash/crc32.update
           7   2.3%  97.0%        7   2.3% runtime.memmove
           5   1.6%  98.7%        5   1.6% scanblock
           2   0.7%  99.3%        9   3.0% runtime.copy
           1   0.3%  99.7%        1   0.3% compress/flate.(*huffmanDecoder).init

After profile:
Total: 230 samples
          59  25.7%  25.7%       70  30.4% compress/flate.(*decompressor).huffSym
          45  19.6%  45.2%       45  19.6% hash/adler32.update
          35  15.2%  60.4%       35  15.2% compress/flate.forwardCopy
          20   8.7%  69.1%      151  65.7% compress/flate.(*decompressor).huffmanBlock
          16   7.0%  76.1%       24  10.4% compress/flate.(*decompressor).moreBits
          15   6.5%  82.6%       15   6.5% runtime.memmove
          11   4.8%  87.4%       50  21.7% compress/flate.(*decompressor).copyHist
           7   3.0%  90.4%        7   3.0% hash/crc32.update
           6   2.6%  93.0%        9   3.9% bufio.(*Reader).ReadByte
           4   1.7%  94.8%        4   1.7% runtime.slicearray

R=rsc, rogpeppe, dave
CC=golang-dev, krasin
https://golang.org/cl/6127064

4de15a5c

30 Apr, 2012 7 commits
- cmd/go: do not ignore DepsErrors in 'go run' · 84ce0f76
  Robert Hencke authored Apr 30, 2012
```
Fixes #3490.

R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/6040046
```
  84ce0f76
- runtime: give proper messages when user defined DYLD_INSERT_LIBRARIES on Darwin · 44fd1d1a
  Shenghou Ma authored Apr 30, 2012
```
       also gives clear error when bsdthread_register fails on Darwin
       Fixes #2992.

R=rsc, krautz
CC=golang-dev
https://golang.org/cl/5966067
```
  44fd1d1a
- misc/dashboard/codereview: record Message-ID of code review thread mails. · 1bdb788b
  David Symonds authored Apr 30, 2012
```
This will allow us to properly thread "R=..." mails at a later time.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6135053
```
  1bdb788b
- misc/dashboard/codereview: add handy logout URL. · 5d331964
  David Symonds authored Apr 30, 2012
```
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6135052
```
  5d331964
- misc/dashboard/codereview: send mail to assigned reviewers if they aren't already looped in. · 4335ec9e
  David Symonds authored Apr 30, 2012
```
R=golang-dev, bradfitz, r
CC=golang-dev
https://golang.org/cl/6128054
```
  4335ec9e
- encoding/base64: don't ignore underlying souce read error in decode · ed90fbc7
  Brad Fitzpatrick authored Apr 30, 2012
```
Fixes #3577

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/6137054
```
  ed90fbc7
- syscall: add a test for passing an fd over a unix socket · fe2ce528
  Brad Fitzpatrick authored Apr 30, 2012
```
Re-submitting previously reverted change 160ec5506cb7.

R=golang-dev, r, r
CC=golang-dev
https://golang.org/cl/6129052
```
  fe2ce528
29 Apr, 2012 1 commit

compress/flate: add Encoder/Decoder benchmarks · d5b299ed

Dave Cheney authored Apr 29, 2012

In CL 6127051, nigeltao suggested that further gains
were possible by improving the performance of flate.
This CL adds a set of benchmarks (based on compress/lzw)
that can be used to judge any future improvements.

R=nigeltao
CC=golang-dev
https://golang.org/cl/6128049

d5b299ed

27 Apr, 2012 10 commits

misc/dashboard/codereview: don't depend on map iteration order for unit calculation. · 24cce5c6
David Symonds authored Apr 27, 2012
```
Fix auth requirements for /gc endpoint too.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6133049
```
24cce5c6

os/exec: close all internal descriptors when Cmd.Start() fails. · a0f7c6c6

Brian Dellisanti authored Apr 27, 2012

This closes any internal descriptors (pipes, etc) that Cmd.Start() had
opened before it failed.

Fixes #3468.

R=golang-dev, iant, bradfitz
CC=golang-dev
https://golang.org/cl/5986044

a0f7c6c6

A+C: add Brian Dellisanti (individual CLA) · 6d1face5
Ian Lance Taylor authored Apr 27, 2012
```
R=golang-dev, bsiegert, r
CC=golang-dev
https://golang.org/cl/6127056
```
6d1face5
misc/dashboard/codereview: simplify parallel operations for front page, and capture timing info. · fe252584
David Symonds authored Apr 27, 2012
```
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6128044
```
fe252584

net: consolidate common socket functions · f72c828c

Dave Cheney authored Apr 27, 2012

In resolving 3507, the fix had to be applied individually to
the four *Conn types, tcp, udp, rawip and unix, due to the
duplicate code in each Conn type.

This CL consolidates the common net.Conn methods that all four
*Conn types implement into a base conn type.

Pros:
* The fix for 3507 would have only needed to be applied to one
method. Further improvements, such as possibly removing the
c.fd != nil check in c.ok(), would benefit from this CL.
* Nearly 300 lines removed from the net package.
* The public interface and documentation are not changed.
* I think this is an excellent example of the power of embedding.

Cons:
* The net package is already distributed over many files, this
CL adds another place to look.
* The fix for 3507 was a total of 16 lines changed, this follow
up CL could be considered to be an overreaction as new Conn types
are unlikely to be added in the near future.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6098047

f72c828c

misc/dashboard/codereview: more abbreviated modification duration. · 1a790537
David Symonds authored Apr 27, 2012
```
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6131044
```
1a790537

misc/dashboard/codereview: new app. · 0175e3f1

David Symonds authored Apr 27, 2012

This is live at http://gocodereview.appspot.com/.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6134043

0175e3f1

image/png: speed up PNG decoding for common color models: Gray, NRGBA, · dd294fbd

Nigel Tao authored Apr 27, 2012

Paletted, RGBA.

benchmark                       old ns/op    new ns/op    delta
BenchmarkDecodeGray               3681144      2536049  -31.11%
BenchmarkDecodeNRGBAGradient     12108660     10020650  -17.24%
BenchmarkDecodeNRGBAOpaque       10699230      8677165  -18.90%
BenchmarkDecodePaletted           2562806      1458798  -43.08%
BenchmarkDecodeRGB                8468175      7180730  -15.20%

benchmark                        old MB/s     new MB/s  speedup
BenchmarkDecodeGray                 17.80        25.84    1.45x
BenchmarkDecodeNRGBAGradient        21.65        26.16    1.21x
BenchmarkDecodeNRGBAOpaque          24.50        30.21    1.23x
BenchmarkDecodePaletted             25.57        44.92    1.76x
BenchmarkDecodeRGB                  30.96        36.51    1.18x

$ file $GOROOT/src/pkg/image/png/testdata/bench*
benchGray.png:           PNG image, 256 x 256, 8-bit grayscale, non-interlaced
benchNRGBA-gradient.png: PNG image, 256 x 256, 8-bit/color RGBA, non-interlaced
benchNRGBA-opaque.png:   PNG image, 256 x 256, 8-bit/color RGBA, non-interlaced
benchPaletted.png:       PNG image, 256 x 256, 8-bit colormap, non-interlaced
benchRGB.png:            PNG image, 256 x 256, 8-bit/color RGB, non-interlaced

R=r
CC=golang-dev
https://golang.org/cl/6127051

dd294fbd

old/regexp, old/template: delete. · 9ce770af

David Symonds authored Apr 27, 2012

Both of these have replacements.

R=golang-dev, r, rsc, r, adg
CC=golang-dev
https://golang.org/cl/5979046

9ce770af

path/filepath: fix typo · 0bad08cb
Anthony Martin authored Apr 27, 2012
```
R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/6117063
```
0bad08cb

26 Apr, 2012 3 commits
- misc/dist: drop repetition in filenames, default to release tag · 029d62f5
  Andrew Gerrand authored Apr 26, 2012
```
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6117066
```
  029d62f5
- re-tag go1.0.1 · d8443d2e
  Andrew Gerrand authored Apr 26, 2012
```
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6115056
```
  d8443d2e
- tag go1.0.1 · 4d0bb13b
  Andrew Gerrand authored Apr 26, 2012
```
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6125048
```
  4d0bb13b