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Commit Graph

14114 Commits

Author SHA1 Message Date
Andrew Gerrand
ce6acefc5d go/doc: add nil to list of predeclared constants
R=gri
CC=gobot, golang-dev
https://golang.org/cl/6601054
2012-10-04 08:37:48 +10:00
Andrew Gerrand
81ae666f16 go/doc: rewrite whole file examples for playground
R=gri
CC=gobot, golang-dev
https://golang.org/cl/6592061
2012-10-04 07:55:24 +10:00
Robert Griesemer
3188ffc931 go spec: conversion types starting with "func" must be parenthesized
Also: Be explicit what operator means with respect to conversion types.

The parenthesis requirement is a language change. At the moment,
literal function types in conversions that cannot possibly be
followed by a '(' don't need parentheses. For instance:

        func(int)int(x)  ->  same as (func(int)int)(x)
        func()()(x)      ->  same as (func())(x)

but:

        func(int)(x)	 ->  could be func(int)x {...}

Fixes #4109.

R=rsc, r, iant, ken, iant
CC=golang-dev
https://golang.org/cl/6584065
2012-10-03 13:46:37 -07:00
Brad Fitzpatrick
256daf2c85 misc/dashboard: set charset utf-8 on build log downloads
Fixes #4187

R=golang-dev, dave, minux.ma
CC=golang-dev
https://golang.org/cl/6587071
2012-10-03 08:16:27 -07:00
Andrew Gerrand
516306f677 godoc: move Examples above Index and make them both collapsable
R=golang-dev, dsymonds, bradfitz, r
CC=golang-dev
https://golang.org/cl/6591066
2012-10-03 15:05:08 +10:00
Shenghou Ma
727e5ce95f testing: update package docs to use ResetTimer() instead of StopTimer/StartTimer()
R=golang-dev, rsc, r
CC=golang-dev
https://golang.org/cl/6591051
2012-10-03 11:41:18 +08:00
Rob Pike
7f4b4c0c00 text/template: better error messages during execution,
They now show the correct name, the byte offset on the line, and context for the failed evaluation.
Before:
        template: three:7: error calling index: index out of range: 5
After:
        template: top:7:20: executing "three" at <index "hi" $>: error calling index: index out of range: 5
Here top is the template that was parsed to create the set, and the error appears with the action
starting at byte 20 of line 7 of "top", inside the template called "three", evaluating the expression
<index "hi" $>.

Also fix a bug in index: it didn't work on strings. Ouch.

Also fix bug in error for index: was showing type of index not slice.
The real previous error was:
        template: three:7: error calling index: can't index item of type int
The html/template package's errors can be improved by building on this;
I'll do that in a separate pass.

Extends the API for text/template/parse but only by addition of a field and method. The
old API still works.

Fixes #3188.

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/6576058
2012-10-03 12:02:13 +10:00
Robert Griesemer
1659aef399 go/ast: track position of <- for channel types
This is a backward-compatible API change.

Without the correct <- position information,
certain channel types have incorrect position
information.

R=iant, iant
CC=golang-dev
https://golang.org/cl/6585063
2012-10-02 17:50:36 -07:00
Shivakumar GN
5f7f9062db os/user : use username as fullname if all else fails (on windows)
Fixes #4113.

R=golang-dev, alex.brainman
CC=golang-dev
https://golang.org/cl/6545054
2012-10-03 10:33:09 +10:00
Robert Griesemer
05dc3bf572 go/parser: correctly parse <-chan T(x) as <-(chan T)(x)
Fixes #4110.

R=iant
CC=golang-dev
https://golang.org/cl/6597069
2012-10-02 16:48:30 -07:00
Robert Hencke
10ea3254a8 codereview.py: suggest installing Mercurial from official website
Continuation of https://golang.org/cl/6499053/

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/6584059
2012-10-03 06:58:24 +10:00
Rémy Oudompheng
2de064b63c cmd/8g: do not take the address of string/slice for &s[i]
A similar change was made in 6g recently.

LEALs in cmd/go: 31440 before, 27867 after.

benchmark                 old ns/op    new ns/op    delta
BenchmarkBinaryTree17    7065794000   6723617000   -4.84%
BenchmarkFannkuch11      7767395000   7477945000   -3.73%
BenchmarkGobDecode         34708140     34857820   +0.43%
BenchmarkGobEncode         10998780     10960060   -0.35%
BenchmarkGzip            1603630000   1471052000   -8.27%
BenchmarkGunzip           242573900    240650400   -0.79%
BenchmarkJSONEncode       120842200    117966100   -2.38%
BenchmarkJSONDecode       247254900    249103100   +0.75%
BenchmarkMandelbrot200     29237330     29241790   +0.02%
BenchmarkParse              8111320      8096865   -0.18%
BenchmarkRevcomp         2595780000   2694153000   +3.79%
BenchmarkTemplate         276679600    264497000   -4.40%

benchmark                              old ns/op    new ns/op    delta
BenchmarkAppendFloatDecimal                  429          416   -3.03%
BenchmarkAppendFloat                         780          740   -5.13%
BenchmarkAppendFloatExp                      746          700   -6.17%
BenchmarkAppendFloatNegExp                   752          694   -7.71%
BenchmarkAppendFloatBig                     1228         1108   -9.77%
BenchmarkAppendFloat32Integer                457          416   -8.97%
BenchmarkAppendFloat32ExactFraction          662          631   -4.68%
BenchmarkAppendFloat32Point                  771          735   -4.67%
BenchmarkAppendFloat32Exp                    722          672   -6.93%
BenchmarkAppendFloat32NegExp                 724          659   -8.98%
BenchmarkAppendFloat64Fixed1                 429          400   -6.76%
BenchmarkAppendFloat64Fixed2                 463          442   -4.54%

Update #1914.

R=golang-dev, daniel.morsing, rsc
CC=golang-dev
https://golang.org/cl/6574043
2012-10-02 08:19:27 +02:00
Dmitriy Vyukov
041fc8bf96 race: gc changes
This is the first part of a bigger change that adds data race detection feature:
https://golang.org/cl/6456044
This change makes gc compiler instrument memory accesses when supplied with -b flag.

R=rsc, nigeltao, lvd
CC=golang-dev
https://golang.org/cl/6497074
2012-10-02 10:05:46 +04:00
Andrew Gerrand
cf513387c3 go/doc: strip example output comment from synthesized main function
R=gri
CC=gobot, golang-dev
https://golang.org/cl/6524047
2012-10-02 08:35:20 +10:00
Dave Cheney
7b36acc4ac cmd/5g: avoid temporary during constant binary op
This CL is an attempt to backport the abop code generation from 6g. This improves the generation of the range offset if the increment can be encoded directly via Operand2 shift encoding.

0023 (/home/dfc/src/range.go:7) BGE     ,29(APC)
0024 (/home/dfc/src/range.go:7) MOVW    0(R3),R5
0025 (/home/dfc/src/range.go:7) MOVW    $4,R1
0026 (/home/dfc/src/range.go:7) ADD     R1,R3,R3
0027 (/home/dfc/src/range.go:8) ADD     R5,R4,R4
0028 (/home/dfc/src/range.go:7) B       ,17(APC)

becomes

0023 (/home/dfc/src/range.go:7) BGE     ,28(APC)
0024 (/home/dfc/src/range.go:7) MOVW    0(R3),R0
0025 (/home/dfc/src/range.go:7) ADD     $4,R3,R3
0026 (/home/dfc/src/range.go:8) ADD     R0,R4,R4
0027 (/home/dfc/src/range.go:7) B       ,17(APC)

Benchmarks are unimpressive

dfc@qnap:~/go/test/bench/go1$ ~/go/misc/benchcmp {old,new}.txt
benchmark                 old ns/op    new ns/op    delta
BenchmarkBinaryTree17    2147483647   2147483647   +0.93%
BenchmarkFannkuch11      2147483647   2147483647   -2.52%
BenchmarkGobDecode        196135200    195842000   -0.15%
BenchmarkGobEncode         78581650     76734450   -2.35%
BenchmarkGzip            2147483647   2147483647   -0.47%
BenchmarkGunzip          1087243000   1070254000   -1.56%
BenchmarkJSONEncode      1107558000   1146077000   +3.48%
BenchmarkJSONDecode      2147483647   2147483647   -0.07%
BenchmarkMandelbrot200   2147483647   2147483647   -0.77%
BenchmarkParse             74328550     71653400   -3.60%
BenchmarkRevcomp          111123900    109325950   -1.62%
BenchmarkTemplate        2147483647   2147483647   -0.82%

benchmark                  old MB/s     new MB/s  speedup
BenchmarkGobDecode             3.91         3.92    1.00x
BenchmarkGobEncode             9.77        10.00    1.02x
BenchmarkGzip                  3.65         3.66    1.00x
BenchmarkGunzip               17.85        18.13    1.02x
BenchmarkJSONEncode            1.75         1.69    0.97x
BenchmarkJSONDecode            0.83         0.83    1.00x
BenchmarkParse                 0.78         0.81    1.04x
BenchmarkRevcomp              22.87        23.25    1.02x
BenchmarkTemplate              0.84         0.85    1.01x

R=remyoudompheng, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/6564067
2012-10-02 08:12:39 +10:00
Jeremy Jackins
b9e423eff3 archive/tar: fix inconsistent namespace usage in example
This fixes some example code in the tar package documentation, which
first refers to tar.NewWriter and then to Header, which is inconsistent
because NewWriter and Header are both in the tar namespace.

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/6595050
2012-10-02 08:10:42 +10:00
Adam Langley
9070d5759f math/big: avoid some allocation in Exp
benchmark                        old ns/op    new ns/op    delta
BenchmarkRSA1024Decrypt             745686       644964  -13.51%
BenchmarkRSA2048Decrypt            5517318      5049200   -8.48%
Benchmark3PrimeRSA2048Decrypt      3767386      3288048  -12.72%

R=gri
CC=gobot, golang-dev
https://golang.org/cl/6566043
2012-10-01 17:31:35 -04:00
Robert Griesemer
5a03cd56a1 cmd/godoc: clearer comments in FormatSelections
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6561073
2012-10-01 14:17:25 -07:00
Adam Langley
3f7fb918fc A+C: add Jeff Wendling (Individual CLA)
R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6596050
2012-10-01 16:49:29 -04:00
Akshat Kumar
48bd5c5010 cmd/go/build: Add magic data for Plan 9 binaries.
This change allows the Go build and install tools to
recognize Plan 9 i386 and amd64 binaries.

R=rsc, r, rminnich
CC=golang-dev
https://golang.org/cl/6575064
2012-10-01 15:04:52 -04:00
Luuk van Dijk
78ba449a3c cmd/gc: Missing break in esc switch.
R=rsc
CC=golang-dev
https://golang.org/cl/6594053
2012-10-01 16:33:06 +02:00
Akshat Kumar
af582674b0 pkg/syscall: Plan 9, 64-bit: Update error checks from sys calls.
This change updates CL 6576057 for exceptional cases where
return values from Syscall/RawSyscall functions are used.

The system calls return 32-bit integers. With the recent change
in size of `int' in Go for amd64, the type conversion was not
catching `-1' return values. This change makes the conversion
explicitly `int32'.

R=rsc, r
CC=golang-dev
https://golang.org/cl/6590047
2012-10-01 10:09:08 +10:00
Rémy Oudompheng
4bb75cd9ad test/fixedbugs: forgotten test cases for issues 3907 and 4156.
Update #3907.
Update #4156.

R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/6595044
2012-09-30 10:35:09 +02:00
David Symonds
ff2f851af1 exp/types: permit importing packages without available source.
R=gri, iant
CC=golang-dev
https://golang.org/cl/6586051
2012-09-30 15:56:23 +10:00
David Symonds
0b448bdef7 exp/types: better diagnosis for compile failures.
R=gri, dave
CC=golang-dev
https://golang.org/cl/6587046
2012-09-30 15:46:37 +10:00
Shenghou Ma
9a3bc51c81 test/fixedbugs/bug454.go: add a test for CL 6564052
Also mention that ignoring second blank identifier of range is required by the spec in the code.

   Fixes #4173.

R=daniel.morsing, remyoudompheng, r
CC=golang-dev
https://golang.org/cl/6594043
2012-09-29 23:23:56 +08:00
Mikio Hara
2fee6e3788 syscall: add ipv4 ancillary data for darwin
R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/6586044
2012-09-29 12:43:05 +09:00
Robert Griesemer
0c494718af go spec: arguments for append may overlap
Fixes #4142.

R=rsc, r, iant, ken, remyoudompheng
CC=golang-dev
https://golang.org/cl/6567062
2012-09-28 15:55:38 -07:00
Paul Chang
7c8e26ee2f cmd/godoc: fix minor bug in FormatSelections.
FormatSelections tries to call a nil function value if lw is nil
and the final entry in the selections array is non-nil. Luckily,
this doesn't actually happen in practice since godoc doesn't use
this combination (no line numbers, but with selections).

R=gri
CC=gobot, golang-dev
https://golang.org/cl/6488106
2012-09-28 14:19:43 -07:00
Robert Griesemer
32eb110277 CONTRIBUTORS: added Paul Chang (Google CLA)
R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6569078
2012-09-28 14:19:31 -07:00
Robert Griesemer
de782dd146 container/list: slightly better code factoring
R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/6569077
2012-09-28 10:58:46 -07:00
Robert Griesemer
0e9daef2d1 container/list: Correctly maintain internal invariants
The previous implementation was a mess with invariants
maintained inconsistently. Essentially reimplemented
the package:

- used a circular list as internal representation for
  significantly simpler implementation with fewer
  special cases while maintaining the illusion of
  a nil-terminated doubly linked list externally

- more precise documentation

- cleaned up and simplified tests, added test case
  for issue 4103.

No changes to the API or documented semantics.

All this said, I would be in favor of removing
this package eventually. container/ring provides
a faster implementation and a simpler and more
powerful API.

Fixes #4103.

R=r
CC=golang-dev
https://golang.org/cl/6569072
2012-09-28 10:35:32 -07:00
Ian Lance Taylor
6ed800c01d test: match gccgo error messages
const1.go:31:12: error: integer constant overflow
const1.go:31:12: error: integer constant overflow
const1.go:33:12: error: integer constant overflow
const1.go:33:12: error: integer constant overflow
const1.go:34:14: error: integer constant overflow
const1.go:35:17: error: integer constant overflow
const1.go:35:17: error: integer constant overflow
const1.go:35:17: error: integer constant overflow
const1.go:35:17: error: integer constant overflow
const1.go:35:17: error: integer constant overflow
const1.go:36:19: error: integer constant overflow
const1.go:37:15: error: integer constant overflow
const1.go:37:15: error: integer constant overflow
const1.go:37:24: error: integer constant overflow
const1.go:37:15: error: integer constant overflow
const1.go:37:15: error: integer constant overflow
const1.go:37:15: error: integer constant overflow
const1.go:37:24: error: integer constant overflow
const1.go:37:15: error: integer constant overflow
const1.go:38:12: error: integer constant overflow
const1.go:38:12: error: integer constant overflow
const1.go:38:12: error: integer constant overflow
const1.go:38:12: error: integer constant overflow
const1.go:41:20: error: integer constant overflow
const1.go:41:20: error: integer constant overflow
const1.go:42:20: error: integer constant overflow
const1.go:42:20: error: integer constant overflow
const1.go:44:28: error: integer constant overflow
const1.go:44:28: error: integer constant overflow
const1.go:45:14: error: integer constant overflow
const1.go:49:14: error: integer constant overflow
const1.go:50:14: error: integer constant overflow
const1.go:51:14: error: integer constant overflow
const1.go:54:23: error: integer constant overflow
const1.go:54:23: error: integer constant overflow
const1.go:54:23: error: integer constant overflow
const1.go:54:23: error: integer constant overflow
const1.go:56:14: error: integer constant overflow
const1.go:57:24: error: integer constant overflow
const1.go:57:24: error: integer constant overflow
const1.go:58:24: error: integer constant overflow
const1.go:58:24: error: integer constant overflow
const1.go:59:22: error: integer constant overflow
const1.go:59:22: error: integer constant overflow
const1.go:61:24: error: integer constant overflow
const1.go:62:20: error: division by zero
const1.go:65:19: error: floating point constant overflow
const1.go:65:19: error: floating point constant overflow
const1.go:66:28: error: floating point constant overflow
const1.go:66:28: error: floating point constant overflow
const1.go:67:19: error: floating point constant overflow
const1.go:67:19: error: floating point constant overflow
const1.go:68:19: error: division by zero
const1.go:33:14: error: integer constant overflow
const1.go:35:19: error: integer constant overflow
const1.go:42:22: error: integer constant overflow
const1.go:53:17: error: integer constant overflow
const1.go:55:14: error: integer constant overflow
const1.go:59:24: error: integer constant overflow
const1.go:69:20: error: expected integer type
const1.go:75:4: error: argument 1 has incompatible type (cannot use type int8 as type int)
const1.go:76:4: error: argument 1 has incompatible type (cannot use type int8 as type int)
const1.go:77:4: error: argument 1 has incompatible type (cannot use type uint8 as type int)
const1.go:79:4: error: argument 1 has incompatible type (cannot use type float32 as type int)
const1.go:80:4: error: argument 1 has incompatible type (cannot use type float64 as type int)
const1.go:81:4: error: floating point constant truncated to integer
const1.go:83:4: error: argument 1 has incompatible type (cannot use type float64 as type int)
const1.go:84:4: error: argument 1 has incompatible type (cannot use type string as type int)
const1.go:85:4: error: argument 1 has incompatible type (cannot use type bool as type int)
const1.go:88:7: error: const initializer cannot be nil

const2.go:14:8: error: expected ‘=’

const5.go:27:7: error: expression is not constant
const5.go:28:7: error: expression is not constant
const5.go:30:7: error: expression is not constant
const5.go:31:7: error: expression is not constant

ddd1.go:57:23: error: invalid use of ‘...’ in type conversion
ddd1.go:59:6: error: invalid use of ‘...’ in type conversion
ddd1.go:60:12: error: use of ‘[...]’ outside of array literal
ddd1.go:21:15: error: argument 1 has incompatible type
ddd1.go:22:10: error: argument 1 has incompatible type
ddd1.go:30:6: error: invalid use of ‘...’ with non-slice
ddd1.go:30:6: error: invalid use of ‘...’ with non-slice
ddd1.go:46:2: error: invalid use of %<...%> with builtin function
ddd1.go:47:2: error: invalid use of %<...%> with builtin function
ddd1.go:49:2: error: invalid use of %<...%> with builtin function
ddd1.go:50:6: error: invalid use of %<...%> with builtin function
ddd1.go:51:6: error: invalid use of %<...%> with builtin function
ddd1.go:53:6: error: invalid use of %<...%> with builtin function
ddd1.go:58:13: error: invalid use of %<...%> with builtin function
ddd1.go:20:10: error: floating point constant truncated to integer
ddd1.go:32:6: error: invalid use of ‘...’ calling non-variadic function

declbad.go:20:3: error: variables redeclared but no variable is new
declbad.go:38:3: error: variables redeclared but no variable is new
declbad.go:44:3: error: variables redeclared but no variable is new
declbad.go:51:3: error: variables redeclared but no variable is new
declbad.go:57:3: error: variables redeclared but no variable is new
declbad.go:63:3: error: variables redeclared but no variable is new
declbad.go:26:3: error: incompatible types in assignment (cannot use type float32 as type int)
declbad.go:32:3: error: incompatible types in assignment (cannot use type int as type float32)
declbad.go:44:3: error: incompatible types in assignment (different number of results)

fixedbugs/bug223.go:21:5: error: initialization expression for ‘m’ depends upon itself

fixedbugs/bug412.go:10:2: error: duplicate field name ‘x’

fixedbugs/bug413.go:11:5: error: initialization expression for ‘i’ depends upon itself

fixedbugs/bug416.go:13:1: error: method ‘X’ redeclares struct field name

fixedbugs/bug435.go:15:49: error: missing ‘)’
fixedbugs/bug435.go:15:2: error: reference to undefined name ‘bar’

fixedbugs/bug451.go:9:9: error: expected package

typeswitch3.go:39:9: error: no new variables on left side of ‘:=’
typeswitch3.go:24:2: error: impossible type switch case (type has no methods)

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6560063
2012-09-28 08:30:30 -07:00
Eric Roshan-Eisner
631a0e71c1 strings: implement a faster single-string Replacer
The string searching is implemented separately so other functions
may make use of it in the future.

benchmark                        old ns/op    new ns/op    delta
BenchmarkSingleMaxSkipping          125889         2474  -98.03%
BenchmarkSingleLongSuffixFail        16252         1996  -87.72%
BenchmarkSingleMatch                260793       136266  -47.75%

benchmark                         old MB/s     new MB/s  speedup
BenchmarkSingleMaxSkipping           79.43      4041.57   50.88x
BenchmarkSingleLongSuffixFail        61.65       501.81    8.14x
BenchmarkSingleMatch                 57.52       110.08    1.91x

R=nigeltao
CC=golang-dev
https://golang.org/cl/6545049
2012-09-28 12:34:18 +10:00
Eric Roshan-Eisner
4bf6249ba5 testing: remove redundant whitespace in output
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6565061
2012-09-28 10:01:09 +10:00
Akshat Kumar
8fdc90acf4 pkg/syscall: Plan 9, 64-bit: Update error checks from sys calls.
The system calls return 32-bit integers. With the recent change
in size of `int' in Go for amd64, the type conversion was not
catching `-1' return values. This change makes the conversion
explicitly `int32'.

R=rsc, rminnich, npe, r
CC=golang-dev
https://golang.org/cl/6576057
2012-09-28 09:56:44 +10:00
Andrew Gerrand
a7d4c3f43d doc: clarify that the displayed tar file name is an example
R=golang-dev, dave, r
CC=golang-dev
https://golang.org/cl/6573065
2012-09-27 15:34:18 -07:00
Andrew Gerrand
020d85152e doc: fix OS X download links
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6566064
2012-09-27 14:48:33 -07:00
Rémy Oudompheng
617b7cf166 cmd/[568]g: header cleanup.
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6573059
2012-09-27 08:34:00 +02:00
Michael Chaten
e289a2b913 bufio: Implement io.WriterTo for (*Reader)
This is part 1 of 2 for issue 4028

benchmark                       old ns/op    new ns/op    delta
BenchmarkReaderCopyOptimal          33495         9849  -70.60%
BenchmarkReaderCopyUnoptimal        70631        27041  -61.72%
BenchmarkReaderCopyOldImpl          51407        52970   +3.04%

Update #4028

R=dave, nigeltao, rsc, bradfitz, rogpeppe
CC=golang-dev
https://golang.org/cl/6548047
2012-09-27 16:31:03 +10:00
Josh Holland
348e31f8f7 text/template: fix typo of errorf as error in comment.
R=r, minux.ma
CC=gobot, golang-dev
https://golang.org/cl/6506120
2012-09-27 15:47:54 +10:00
Rob Pike
063b074407 CLA: Josh Holland <jrh@joshh.co.uk> individual contributor
R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/6568059
2012-09-27 15:47:18 +10:00
Rob Pike
b46dd48dd3 cmd/api: delete redundant text from deletion message
R=bradfitz, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/6543064
2012-09-27 15:39:56 +10:00
Nigel Tao
791ac65b82 lzw: fix Write returning the wrong number of bytes written.
Fixes #4160.

R=rsc, r
CC=golang-dev
https://golang.org/cl/6564060
2012-09-27 13:29:39 +10:00
Rob Pike
ffea835b8f fmt: allow # and x together for strings
Silly and small but easy to be consistent.
To make it worthwhile, I eliminated an allocation when using
%x on a byte slice.

Fixes #4149.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6574046
2012-09-27 06:21:38 +10:00
Sébastien Paolacci
7014bc64b1 net: spread fd over several pollservers.
Lighten contention without preventing further improvements on pollservers.
Connections are spread over Min(GOMAXPROCS, NumCPU, 8) pollserver instances.

Median of 10 runs, 4 cores @ 3.4GHz, amd/linux-3.2:

BenchmarkTCPOneShot                171917 ns/op   175194 ns/op      1.91%
BenchmarkTCPOneShot-2              101413 ns/op   109462 ns/op      7.94%
BenchmarkTCPOneShot-4               91796 ns/op    35712 ns/op    -61.10%
BenchmarkTCPOneShot-6               90938 ns/op    30607 ns/op    -66.34%
BenchmarkTCPOneShot-8               90374 ns/op    29150 ns/op    -67.75%
BenchmarkTCPOneShot-16             101089 ns/op   111526 ns/op     10.32%

BenchmarkTCPOneShotTimeout         174986 ns/op   178606 ns/op      2.07%
BenchmarkTCPOneShotTimeout-2       101585 ns/op   110678 ns/op      8.95%
BenchmarkTCPOneShotTimeout-4        91547 ns/op    35931 ns/op    -60.75%
BenchmarkTCPOneShotTimeout-6        91496 ns/op    31019 ns/op    -66.10%
BenchmarkTCPOneShotTimeout-8        90670 ns/op    29531 ns/op    -67.43%
BenchmarkTCPOneShotTimeout-16      101013 ns/op   106026 ns/op      4.96%

BenchmarkTCPPersistent              51731 ns/op    53324 ns/op      3.08%
BenchmarkTCPPersistent-2            32888 ns/op    30678 ns/op     -6.72%
BenchmarkTCPPersistent-4            25751 ns/op    15595 ns/op    -39.44%
BenchmarkTCPPersistent-6            26737 ns/op     9805 ns/op    -63.33%
BenchmarkTCPPersistent-8            26850 ns/op     9730 ns/op    -63.76%
BenchmarkTCPPersistent-16          104449 ns/op   102838 ns/op     -1.54%

BenchmarkTCPPersistentTimeout       51806 ns/op    53281 ns/op      2.85%
BenchmarkTCPPersistentTimeout-2     32956 ns/op    30895 ns/op     -6.25%
BenchmarkTCPPersistentTimeout-4     25994 ns/op    18111 ns/op    -30.33%
BenchmarkTCPPersistentTimeout-6     26679 ns/op     9846 ns/op    -63.09%
BenchmarkTCPPersistentTimeout-8     26810 ns/op     9727 ns/op    -63.72%
BenchmarkTCPPersistentTimeout-16   101652 ns/op   104410 ns/op      2.71%

R=rsc, dvyukov, dave, mikioh.mikioh, bradfitz, remyoudompheng
CC=golang-dev
https://golang.org/cl/6496054
2012-09-26 15:32:59 -04:00
Rémy Oudompheng
6feb61325a cmd/6g, cmd/8g: fix two "out of fixed registers" cases.
In two cases, registers were allocated too early resulting
in exhausting of available registers when nesting these
operations.

The case of method calls was due to missing cases in igen,
which only makes calls but doesn't allocate a register for
the result.

The case of 8-bit multiplication was due to a wrong order
in register allocation when Ullman numbers were bigger on the
RHS.

Fixes #3907.
Fixes #4156.

R=rsc
CC=golang-dev, remy
https://golang.org/cl/6560054
2012-09-26 21:17:11 +02:00
Daniel Morsing
7936ab58f7 cmd/gc: Don't calculate second value in range if it is blank.
Low hanging fruit optimization. Will remove an expensive copy if the range variable is an array.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6564052
2012-09-26 21:10:29 +02:00
David du Colombier
cca48f1a57 crypto/x509: add Plan 9 root certificate location
R=golang-dev
CC=golang-dev, rsc
https://golang.org/cl/6571056
2012-09-26 14:47:47 -04:00
Jonathan Feinberg
452f40f8e0 doc: add important info for would-be go contributors.
Link to the "installing from source" docs instead of the "installing" docs.

Remind would-be hacker to switch to the default branch from the release branch.

R=rsc
CC=golang-dev
https://golang.org/cl/6559043
2012-09-26 14:39:31 -04:00