Commits · 0bf36ce8fbc4c9468e7a253f6341a3bf7b425029 · go / golang

13 Jul, 2011 29 commits

os: Plan 9: add Process.Signal as a way to send notes. · 0bf36ce8

Yuval Pavel Zholkover authored Jul 13, 2011

Move the Signal interface from exec_posix.go to exec.go.
Remove some unsused code from file_plan9.go.

R=fshahriar, rsc
CC=golang-dev
https://golang.org/cl/4683044

0bf36ce8

runtime: correct FixedStack value (fixes windows build) · dde43558
Alex Brainman authored Jul 13, 2011
```
Fixes #2068.

R=rsc
CC=golang-dev
https://golang.org/cl/4705046
```
dde43558

cc: fixes for Plan 9 build · 3f2cc8ba

Lucio De Re authored Jul 13, 2011

<ctype.h> has been moved into <u.h>, specifically to be able to
drop it from these modules.

Will someone check platforms other than UBUNTU/386, please?

R=bsiegert, rsc
CC=golang-dev
https://golang.org/cl/4648078

3f2cc8ba

fix build from e904b6784768 breakage · 8ba48fb5
Brad Fitzpatrick authored Jul 13, 2011
```
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/4696047
```
8ba48fb5

syscall: add Flock on Linux · aebfd63c

Russ Cox authored Jul 13, 2011

Fixes #2069.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/4703048

aebfd63c

syscall: change missing from windows net fixes · a16baf07
Russ Cox authored Jul 13, 2011
```
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/4701045
```
a16baf07
filepath/path: fix a comment · f4acaa8e
Robert Griesemer authored Jul 13, 2011
```
R=bradfitz
CC=golang-dev
https://golang.org/cl/4704047
```
f4acaa8e

exp/template: tweak behavior of booleans. · 469e3331

Rob Pike authored Jul 13, 2011

Russ suggested this technique, making the "and" and "or" functions handier.
But it's hacky, and I can be talked out of it.

R=dsymonds, rsc
CC=golang-dev
https://golang.org/cl/4698044

469e3331

exp/template: allow niladic methods inside chained field references. · c3344d61
Rob Pike authored Jul 13, 2011
```
Also really fix the bug about dot vs. receivers.

R=rsc, r
CC=golang-dev
https://golang.org/cl/4705047
```
c3344d61

http: fix Content-Type of file extension. · 2012290c

Yasuhiro Matsumoto authored Jul 13, 2011

ServeFile() pass empty string to serveFile(). serveFile() should get
file extension via joining root and filename.

R=bradfitz, rsc
CC=golang-dev
https://golang.org/cl/4654089

2012290c

net: windows/amd64 port · 35050455
Wei Guangjing authored Jul 13, 2011
```
R=rsc, alex.brainman
CC=golang-dev
https://golang.org/cl/3790044
```
35050455

debug/elf: Read ELF Program headers. · 932db13e

Matthew Horsnell authored Jul 13, 2011

NewFile has been fixed to read ELF Program headers into the structs.
Added test coverage.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/4628062

932db13e

A+C: Matthew Horsnell (individual CLA) · ceb43775
Russ Cox authored Jul 13, 2011
```
R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/4700044
```
ceb43775
runtime: stdcall_raw stack 16byte align for Win64 · a6e60916
Wei Guangjing authored Jul 13, 2011
```
R=alex.brainman, rsc
CC=golang-dev
https://golang.org/cl/4681049
```
a6e60916

runtime: fix data race during Itab hash update/lookup · 86a659ca

Dmitriy Vyukov authored Jul 13, 2011

The data race is on newly published Itab nodes, which are
both unsafely published and unsafely acquired. It can
break on IA-32/Intel64 due to compiler optimizations
(most likely not an issue as of now) and on ARM due to
hardware memory access reorderings.

R=rsc
CC=golang-dev
https://golang.org/cl/4673055

86a659ca

docs: fix wrong it's -> its · dcdaeebd
Brad Fitzpatrick authored Jul 13, 2011
```
R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/4702046
```
dcdaeebd
exp/regexp/syntax: add Prog.NumCap · e3a77347
Sam Thorogood authored Jul 13, 2011
```
R=rsc, r
CC=golang-dev
https://golang.org/cl/4662083
```
e3a77347

exp/eval, exp/ogle: remove packages eval and ogle · 4c986d86

Robert Griesemer authored Jul 13, 2011

An externally maintained version of exp/eval can
be found at: https://bitbucket.org/binet/go-eval/ .

R=golang-dev, r, rsc
CC=golang-dev
https://golang.org/cl/4695047

4c986d86

gob: register more slice types · 050d839d

Bobby Powers authored Jul 13, 2011

Without explicitly registering slice types, gob fails to encode
map[string]interface{} instances where the value is a slice,
failing with a message such as:

  gob: type not registered for interface: []string

Fixes #2065.

R=golang-dev, gri, r
CC=golang-dev
https://golang.org/cl/4672056

050d839d

html: update section references in comments to the latest HTML5 spec. · d360e021
Nigel Tao authored Jul 13, 2011
```
R=r
CC=golang-dev
https://golang.org/cl/4699048
```
d360e021
C+A: Bobby Powers <bobbypowers@gmail.com> · 9415cd1d
Rob Pike authored Jul 13, 2011
```
R=golang-dev, dsymonds
CC=bobbypowers, golang-dev
https://golang.org/cl/4695050
```
9415cd1d

exp/template: doc and API changes suggested by rsc. · 7aa1a1a6

Rob Pike authored Jul 13, 2011

- template invocation is by string constant only.
- NewSet is gone.
- no global Funcs
- writer is now first arg to Execute

R=rsc, r
CC=golang-dev
https://golang.org/cl/4700043

7aa1a1a6

exp/template: add Set.AddSet and Set.Union. · 2e9388e3

Rob Pike authored Jul 13, 2011

Document and test that Set.Parse can be called multiple times.

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/4703044

2e9388e3

exp/template: allow variables as template names. · 41efecf5

Rob Pike authored Jul 13, 2011

Just an oversight it wasn't already there.
Thanks to islandberry@live.com for pointing out the omission.

R=golang-dev, dsymonds
CC=golang-dev, islandberry
https://golang.org/cl/4703043

41efecf5

go_tutorial: change the way it's generated. · c1c8d46d

Rob Pike authored Jul 13, 2011

No longer do we generate HTML from it; instead the input
file is already in HTML but has template invocations to
extract programs from other files.
Delete htmlgen, which is no longer needed.
Add tmpltohtml, which runs the templating code.

R=golang-dev, dsymonds, adg
CC=golang-dev
https://golang.org/cl/4699041

c1c8d46d

5l, 6l, 8l: Add a PT_LOAD PHDR entry for the PHDR. · f1df07bf

David Anderson authored Jul 13, 2011

Per the TIS ELF spec, if a PHDR entry is present in the
program header table, it must be part of the memory image of
the program. Failure to do this makes elflint complain, and
causes some tools that manipulate ELF to crash.

R=iant, rsc
CC=dave, golang-dev
https://golang.org/cl/4650067

f1df07bf

csv: fix spelling errors in comments · 75780f99
Robert Griesemer authored Jul 13, 2011
```
Fixes #2066.

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/4699045
```
75780f99
tag release.r58.1: adds OS X Lion support · 7318664c
Russ Cox authored Jul 13, 2011
```
R=adg, dsymonds
CC=golang-dev
https://golang.org/cl/4702043
```
7318664c

runtime: replace runtime.mcpy with runtime.memmove · fe9991e8

Quan Yong Zhai authored Jul 13, 2011

faster string operations, and more

tested on linux/386

runtime_test.BenchmarkSliceToString                    642          532  -17.13%
runtime_test.BenchmarkStringToSlice                    636          528  -16.98%
runtime_test.BenchmarkConcatString                    1109          897  -19.12%

R=r, iant, rsc
CC=golang-dev
https://golang.org/cl/4674042

fe9991e8

12 Jul, 2011 11 commits

doc: gofix io2010 demo programs · ba91dac3
Andrew Gerrand authored Jul 12, 2011
```
R=golang-dev, gri, r, agl
CC=golang-dev
https://golang.org/cl/4696046
```
ba91dac3
debug/pe: fixes ImportedSymbols for Win64. · f340b3de
Wei Guangjing authored Jul 12, 2011
```
R=golang-dev, alex.brainman
CC=golang-dev
https://golang.org/cl/4639086
```
f340b3de
gc: make size of struct{} and [0]byte 0 bytes · 67edf9cb
Robert Hencke authored Jul 12, 2011
```
Fixes #1949.

R=iant, rsc
CC=golang-dev
https://golang.org/cl/4634124
```
67edf9cb

runtime: eliminate false sharing during stack growth · 86e7323b

Dmitriy Vyukov authored Jul 12, 2011

Remove static variable from runtime·oldstack().
Benchmark results on HP Z600 (2 x Xeon E5620, 8 HT cores, 2.40GHz)
are as follows (with CL 4657091 applied):
benchmark                                        old ns/op    new ns/op    delta
BenchmarkStackGrowth                               1183.00      1180.00   -0.25%
BenchmarkStackGrowth-2                             1249.00      1211.00   -3.04%
BenchmarkStackGrowth-4                              954.00       805.00  -15.62%
BenchmarkStackGrowth-8                              701.00       683.00   -2.57%
BenchmarkStackGrowth-16                             465.00       415.00  -10.75%

R=rsc
CC=golang-dev
https://golang.org/cl/4693042

86e7323b

runtime: fix comment (lost in shuffle) · 88e0c051
Russ Cox authored Jul 12, 2011
```
TBR=dvyukov
CC=golang-dev
https://golang.org/cl/4710041
```
88e0c051

runtime: eliminate contention during stack allocation · c9152a85

Dmitriy Vyukov authored Jul 12, 2011

Standard-sized stack frames use plain malloc/free
instead of centralized lock-protected FixAlloc.
Benchmark results on HP Z600 (2 x Xeon E5620, 8 HT cores, 2.40GHz)
are as follows:
benchmark                                        old ns/op    new ns/op    delta
BenchmarkStackGrowth                               1045.00       949.00   -9.19%
BenchmarkStackGrowth-2                             3450.00       800.00  -76.81%
BenchmarkStackGrowth-4                             5076.00       513.00  -89.89%
BenchmarkStackGrowth-8                             7805.00       471.00  -93.97%
BenchmarkStackGrowth-16                           11751.00       321.00  -97.27%

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/4657091

c9152a85

sync: improve RWMutex performance · daaf29cf

Dmitriy Vyukov authored Jul 12, 2011

The new implementation features wait-free
fast path for readers which significantly improves
performance/scalability on read-mostly workloads.
Benchmark results on HP Z600 (2 x Xeon E5620, 8 HT cores, 2.40GHz)
are as follows:
benchmark old ns/op new ns/op delta
BenchmarkRWMutexUncontended 179.00 96.60 -46.03%
BenchmarkRWMutexUncontended-2 89.10 49.10 -44.89%
BenchmarkRWMutexUncontended-4 44.70 24.70 -44.74%
BenchmarkRWMutexUncontended-8 23.30 12.90 -44.64%
BenchmarkRWMutexUncontended-16 16.80 8.75 -47.92%
BenchmarkRWMutexWrite100 79.60 26.80 -66.33%
BenchmarkRWMutexWrite100-2 305.00 33.00 -89.18%
BenchmarkRWMutexWrite100-4 245.00 113.00 -53.88%
BenchmarkRWMutexWrite100-8 330.00 147.00 -55.45%
BenchmarkRWMutexWrite100-16 371.00 152.00 -59.03%
BenchmarkRWMutexWrite10 78.30 29.80 -61.94%
BenchmarkRWMutexWrite10-2 348.00 165.00 -52.59%
BenchmarkRWMutexWrite10-4 447.00 199.00 -55.48%
BenchmarkRWMutexWrite10-8 564.00 180.00 -68.09%
BenchmarkRWMutexWrite10-16 492.00 192.00 -60.98%
BenchmarkRWMutexWorkWrite100 1077.00 1037.00 -3.71%
BenchmarkRWMutexWorkWrite100-2 659.00 596.00 -9.56%
BenchmarkRWMutexWorkWrite100-4 509.00 361.00 -29.08%
BenchmarkRWMutexWorkWrite100-8 603.00 351.00 -41.79%
BenchmarkRWMutexWorkWrite100-16 750.00 607.00 -19.07%
BenchmarkRWMutexWorkWrite10 990.00 951.00 -3.94%
BenchmarkRWMutexWorkWrite10-2 1119.00 1070.00 -4.38%
BenchmarkRWMutexWorkWrite10-4 1300.00 1199.00 -7.77%
BenchmarkRWMutexWorkWrite10-8 1424.00 1291.00 -9.34%
BenchmarkRWMutexWorkWrite10-16 1981.00 1786.00 -9.84%

R=rsc
CC=golang-dev
https://golang.org/cl/4671051

daaf29cf

effective go: tweak the words about semicolons, parens in control structures, · 4c631295
Rob Pike authored Jul 12, 2011
```
and make and new.

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/4699043
```
4c631295

hash/crc32: add SSE4.2 support · 9f4c288c

Adam Langley authored Jul 12, 2011

Using the CRC32 instruction speeds up the Castagnoli computation by
about 20x on a modern Intel CPU.

R=rsc
CC=golang-dev
https://golang.org/cl/4650072

9f4c288c

go/build: include processing of .c files for cgo packages · 0f8678a7
Alex Brainman authored Jul 12, 2011
```
R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/4696041
```
0f8678a7

image: remove superfluous if condition. · 851ded96

Nigel Tao authored Jul 12, 2011

DrawMask already returns early if r.Empty().

R=r
CC=golang-dev
https://golang.org/cl/4703041

851ded96