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Author SHA1 Message Date
Anthony Martin
fe5005f721 syscall: remove the Signal type on Plan 9 
Instead use a new type, "Note", whose underlying
type is just a string.  This change allows us to
remove the exported os.Plan9Note type.

R=bradfitz, seed, rsc
CC=golang-dev
https://golang.org/cl/6015046
 2012-05-04 03:44:41 -07:00
Shenghou Ma
2bed8a7e95 go/build: cgo is supported on Linux/ARM 
Last Part of CL 5601044 (cgo: Linux/ARM support)
        Fixes #1880.

R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/5988057
 2012-05-04 18:34:04 +08:00
Shenghou Ma
e7a0a7595a cmd/go: cgo for Linux/ARM 
Part 4 of CL 5601044 (cgo: Linux/ARM support)

R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/5989058
 2012-05-04 18:29:40 +08:00
Shenghou Ma
9602dd5e87 cmd/cgo: support Linux/ARM 
Part 3 of CL 5601044 (cgo: Linux/ARM support)

R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/5991066
 2012-05-04 18:26:16 +08:00
Shenghou Ma
5cffce611a runtime: cgo support for Linux/ARM 
Part 2 of CL 5601044 (cgo: Linux/ARM support)

R=dave, rsc
CC=golang-dev
https://golang.org/cl/5989057
 2012-05-04 18:20:09 +08:00
Shenghou Ma
452a9e452b cmd/5l, cmd/ld: dynamic linking library support 
Part 1 of CL 5601044 (cgo: Linux/ARM support)
        Limitation: doesn't support thumb library yet.

R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/5991065
 2012-05-04 18:14:26 +08:00
David Symonds
c44a22cc49 misc/dashboard/codereview: remove transitional code. 
All current CLs have subject lines, so we don't need to check any more.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6196044
 2012-05-04 16:40:24 +10:00
Michael Chaten
3fab2a97e4 encoding/json: Fix panic when trying to unmarshal the empty string into an integer 
Fixes #3450.

R=rsc, bradfitz
CC=golang-dev
https://golang.org/cl/6035050
 2012-05-03 17:35:44 -04:00
Francisco Souza
61060acdc1 syscall: add Termios support on darwin 
Update #3316.

R=dave, kevlar, devon.odell, rsc, minux.ma
CC=golang-dev
https://golang.org/cl/6063053
 2012-05-03 17:33:19 -04:00
Ian Lance Taylor
890be5ced0 test: add bug437, a test that used to fail with gccgo at link time 
Updates #3391.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6177045
 2012-05-03 14:25:11 -07:00
Adam Langley
c8e1946f33 crypto/x509: fix panic when using unavailable hash function. 
crypto.Hash.New() changed to panicking when the hash function isn't
linked in, but crypto/x509 still expects it to return nil.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6175047
 2012-05-03 16:39:57 -04:00
Shenghou Ma
278d4a583d cmd/5c, cmd/5a, cmd/5l: ARM support for PREFETCH built-in 
R=rsc
CC=golang-dev
https://golang.org/cl/6174049
 2012-05-04 03:24:14 +08:00
Ian Lance Taylor
df64448932 test: add bug436, valid code that crashed gccgo 
R=golang-dev, bsiegert, rsc
CC=golang-dev
https://golang.org/cl/6158046
 2012-05-03 10:33:10 -07:00
Shenghou Ma
52ec4aa24a cmd/dist: remove stray src/pkg/runtime/z* when cleaning 
R=golang-dev, bradfitz, dave, rsc, lstoakes, rsc
CC=golang-dev
https://golang.org/cl/6180044
 2012-05-04 00:58:48 +08:00
Andrew Gerrand
7a77645aa8 misc/dashboard/codereview: add copyright notices to Go files 
R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/6177043
 2012-05-03 09:22:45 +10:00
Russ Cox
d42495aa80 cmd/cc: add PREFETCH built-in (like SET, USED) 
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
 2012-05-02 16:22:56 -04:00
Marcel van Lohuizen
10838165d8 exp/locale/collate: fixed two bugs uncovered by regression tests. 
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
 2012-05-02 17:01:41 +02:00
Luuk van Dijk
81d9621534 cmd/gc: test for issue 3552 
R=rsc
CC=golang-dev
https://golang.org/cl/6128051
 2012-05-02 16:56:26 +02:00
Dmitriy Vyukov
c1c851bbe8 runtime: avoid unnecessary zeroization of huge memory blocks 
+move zeroization out of the heap mutex

R=golang-dev, iant, rsc
CC=golang-dev
https://golang.org/cl/6094050
 2012-05-02 18:01:11 +04:00
Alex Brainman
0d55d9832f os/signal: run windows TestCtrlBreak during build 
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6136054
 2012-05-02 17:05:52 +10:00
Anthony Martin
90626864dc os: conform to Go 1 API on Plan 9 
R=golang-dev, r, bradfitz, r
CC=golang-dev
https://golang.org/cl/6117062
 2012-05-01 22:44:38 -07:00
Anthony Martin
3859032980 build: dist-based build for Plan 9 
R=rsc, iant, iant, seed
CC=golang-dev
https://golang.org/cl/5608059
 2012-05-01 22:32:46 -07:00
Rob Pike
ce30769ce3 misc/dashboard/codereview: LGTM favicon 
R=dsymonds
CC=golang-dev
https://golang.org/cl/6158043
 2012-05-02 13:48:49 +10:00
Dave Cheney
d472d3faf1 bytes: add assembly version of Equal for ARM 
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
 2012-05-02 12:10:24 +10:00
Ian Lance Taylor
82e30c681c cgo: rename C names for Go types to avoid conflicting with package 
Fixes #3371.

R=rsc, bsiegert, r, mtj, iant
CC=golang-dev
https://golang.org/cl/6131060
 2012-05-01 09:04:13 -07:00
David Symonds
cc9a5c3be7 misc/dashboard/codereview: preserve CL ordering. 
R=r
CC=golang-dev
https://golang.org/cl/6136056
 2012-05-01 16:15:32 +10:00
Nigel Tao
86a91539b8 compress/flate: add a copy overrun test. 
R=rsc, r
CC=golang-dev
https://golang.org/cl/6143043
 2012-05-01 14:28:33 +10:00
David Symonds
83aa040c45 misc/dashboard/codereview: de-dup LGTMs. 
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6127066
 2012-05-01 11:41:32 +10:00
David Symonds
c3c8e35af2 encoding/json: don't match field name if a JSON struct tag is present. 
Fixes #3566.

R=rsc
CC=golang-dev
https://golang.org/cl/6139048
 2012-05-01 11:37:44 +10:00
David Symonds
dae2992c98 misc/dashboard/codereview: send mail immediately, and fill in time.Time fields. 
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
 2012-05-01 11:33:25 +10:00
Nigel Tao
4de15a5cda compress/flate: optimize history-copy decoding. 
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
 2012-05-01 10:51:34 +10:00
Robert Hencke
84ce0f7687 cmd/go: do not ignore DepsErrors in 'go run' 
Fixes #3490.

R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/6040046
 2012-04-30 17:00:24 -04:00
Shenghou Ma
44fd1d1a6a runtime: give proper messages when user defined DYLD_INSERT_LIBRARIES on Darwin 
also gives clear error when bsdthread_register fails on Darwin
       Fixes #2992.

R=rsc, krautz
CC=golang-dev
https://golang.org/cl/5966067
 2012-04-30 15:55:07 -04:00
David Symonds
1bdb788b2e misc/dashboard/codereview: record Message-ID of code review thread mails. 
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
 2012-04-30 22:47:51 +10:00
David Symonds
5d331964e7 misc/dashboard/codereview: add handy logout URL. 
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6135052
 2012-04-30 22:47:06 +10:00
David Symonds
4335ec9eeb misc/dashboard/codereview: send mail to assigned reviewers if they aren't already looped in. 
R=golang-dev, bradfitz, r
CC=golang-dev
https://golang.org/cl/6128054
 2012-04-30 22:03:56 +10:00
Brad Fitzpatrick
ed90fbc747 encoding/base64: don't ignore underlying souce read error in decode 
Fixes #3577

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/6137054
 2012-04-30 17:14:41 +10:00
Brad Fitzpatrick
fe2ce5285e syscall: add a test for passing an fd over a unix socket 
Re-submitting previously reverted change 160ec5506cb7.

R=golang-dev, r, r
CC=golang-dev
https://golang.org/cl/6129052
 2012-04-30 15:31:14 +10:00
Dave Cheney
d5b299eda2 compress/flate: add Encoder/Decoder benchmarks 
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
 2012-04-29 20:41:13 +10:00
David Symonds
24cce5c60c misc/dashboard/codereview: don't depend on map iteration order for unit calculation. 
Fix auth requirements for /gc endpoint too.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6133049
 2012-04-28 09:47:15 +10:00
Brian Dellisanti
a0f7c6c658 os/exec: close all internal descriptors when Cmd.Start() fails. 
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
 2012-04-27 15:46:49 -07:00
Ian Lance Taylor
6d1face5ba A+C: add Brian Dellisanti (individual CLA) 
R=golang-dev, bsiegert, r
CC=golang-dev
https://golang.org/cl/6127056
 2012-04-27 15:46:27 -07:00
David Symonds
fe252584f5 misc/dashboard/codereview: simplify parallel operations for front page, and capture timing info. 
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6128044
 2012-04-27 23:16:54 +10:00
Dave Cheney
f72c828c67 net: consolidate common socket functions 
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
 2012-04-27 22:17:08 +10:00
David Symonds
1a79053725 misc/dashboard/codereview: more abbreviated modification duration. 
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6131044
 2012-04-27 17:12:09 +10:00
David Symonds
0175e3f1e0 misc/dashboard/codereview: new app. 
This is live at http://gocodereview.appspot.com/.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6134043
 2012-04-27 16:36:02 +10:00
Nigel Tao
dd294fbd5a image/png: speed up PNG decoding for common color models: Gray, NRGBA, 
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
 2012-04-27 16:03:58 +10:00
David Symonds
9ce770afad old/regexp, old/template: delete. 
Both of these have replacements.

R=golang-dev, r, rsc, r, adg
CC=golang-dev
https://golang.org/cl/5979046
 2012-04-27 15:12:24 +10:00
Anthony Martin
0bad08cbbb path/filepath: fix typo 
R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/6117063
 2012-04-27 10:25:19 +10:00
Andrew Gerrand
029d62f5c0 misc/dist: drop repetition in filenames, default to release tag 
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6117066
 2012-04-26 13:25:53 -07:00