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Commit Graph

23558 Commits

Author SHA1 Message Date
Russ Cox
d820d5f3ab runtime: make mapzero not crash on arm
Change-Id: I40e8a4a2e62253233b66f6a2e61e222437292c31
Reviewed-on: https://go-review.googlesource.com/10151
Reviewed-by: Minux Ma <minux@golang.org>
2015-05-15 20:14:41 +00:00
Michael Hudson-Doyle
ddc4c146a4 cmd/internal/ld: prevent creation of .dynamic and .dynsym symbols when externally linking
This allows the removal of a fudge in data.go.

We have to defer the calls to adddynlib on non-Darwin until after we have
decided whether we are externally or internally linking.  The Macho/ELF
separation could do with some cleaning up, but: code freeze.

Fixing this once rather than per-arch is what inspired the previous CLs.

Change-Id: I0166f7078a045dc09827745479211247466c0c54
Reviewed-on: https://go-review.googlesource.com/10002
Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-15 20:09:12 +00:00
Michael Hudson-Doyle
4cfff271c2 cmd/5l, etc, cmd/internal/ld: consolidate implementations of adddynsym
The only essential difference is elf32 vs elf64, I assume the other differences
are bugs in one version or another...

Change-Id: Ie6ff33d5574a6592b543df9983eff8fdf88c97a1
Reviewed-on: https://go-review.googlesource.com/10001
Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com>
Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-15 20:08:42 +00:00
Michael Hudson-Doyle
004706099d cmd/5l, etc, cmd/internal/ld: consolidate implementations of adddynlib
They were all essentially the same.

Change-Id: I6e0b548cda6e4bbe2ec3b3025b746d1f6d332d48
Reviewed-on: https://go-review.googlesource.com/10000
Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-15 20:07:54 +00:00
Russ Cox
c3c047a6a3 runtime: test and fix heap bitmap for 1-pointer allocation on 32-bit system
Change-Id: Ic064fe7c6bd3304dcc8c3f7b3b5393870b5387c2
Reviewed-on: https://go-review.googlesource.com/10119
Run-TryBot: Austin Clements <austin@google.com>
Reviewed-by: Austin Clements <austin@google.com>
2015-05-15 18:47:00 +00:00
Josh Bleecher Snyder
8fa14ea8b4 cmd/internal/gc: unembed Name field
This is an automated follow-up to CL 10120.
It was generated with a combination of eg and gofmt -r.

No functional changes. Passes toolstash -cmp.

Change-Id: I0dc6d146372012b4cce9cc4064066daa6694eee6
Reviewed-on: https://go-review.googlesource.com/10144
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2015-05-15 18:17:51 +00:00
Alex A Skinner
ef7e108565 net: redo resolv.conf recheck implementation
The previous implementation spawned an extra goroutine to handle
rechecking resolv.conf for changes.

This change eliminates the extra goroutine, and has rechecking
done as part of a lookup.  A side effect of this change is that the
first lookup after a resolv.conf change will now succeed, whereas
previously it would have failed.  It also fixes rechecking logic to
ignore resolv.conf parsing errors as it should.

Fixes #8652
Fixes #10576
Fixes #10649
Fixes #10650
Fixes #10845

Change-Id: I502b587c445fa8eca5207ca4f2c8ec8c339fec7f
Reviewed-on: https://go-review.googlesource.com/9991
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Mikio Hara <mikioh.mikioh@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2015-05-15 18:14:47 +00:00
Robert Griesemer
40fad6c286 go/parser: better error message for missing ',' in lists
Fixes #8940.

Change-Id: Ie9e5149983518ba8d56ddd82ac8f4cde6b644167
Reviewed-on: https://go-review.googlesource.com/10089
Reviewed-by: Alan Donovan <adonovan@google.com>
2015-05-15 17:58:56 +00:00
Matthew Dempsky
1467776b17 cmd/internal/obj: update callers to Linkline{fmt,hist} and remove
Does the TODOs added by https://golang.org/cl/7623.

Passes rsc.io/toolstash/buildall.

Change-Id: I23913a8f03834640e9795d48318febb3f88c10f9
Reviewed-on: https://go-review.googlesource.com/9160
Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-15 17:45:39 +00:00
Matthew Dempsky
82e1651a24 cmd/internal/gc, cmd/yacc: merge yaccerrors.go into cmd/yacc
This extends cmd/yacc with support for

	%error { tokens } : message

syntax to specify custom error messages to use instead of the default
generic ones.  This allows merging go.errors into go.y and removing
the yaccerrors.go tool.

Updates #9968.

Change-Id: I781219c568b86472755f877f48401eaeab00ead5
Reviewed-on: https://go-review.googlesource.com/8563
Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-15 17:29:26 +00:00
Brad Fitzpatrick
d4ed30612c syscall: don't run fcntl child process test on iOS
Fixes darwin-arm{,64} builds.
Child processes aren't allowed on iOS.

Change-Id: I9258ed4df757ec394ef6327dbda96f5b9705bcdd
Reviewed-on: https://go-review.googlesource.com/10142
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
2015-05-15 16:41:12 +00:00
Brad Fitzpatrick
97494a45e2 Revert "cmd/internal/gc: ignore declarations of types for goto validation"
This reverts commit 5726af54eb.

It broke all the builds.

Change-Id: I4b1dde86f9433717d303c1dabd6aa1a2bf97fab2
Reviewed-on: https://go-review.googlesource.com/10143
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2015-05-15 16:35:49 +00:00
Håvard Haugen
4302fd0409 encoding/json: fix decoding of types with '[]byte' as underlying type
All slice types which have elements of kind reflect.Uint8 are marshalled
into base64 for compactness. When decoding such data into a custom type
based on []byte the decoder checked the slice kind instead of the slice
element kind, so no appropriate decoder was found.

Fixed by letting the decoder check slice element kind like the encoder.
This guarantees that already encoded data can still be successfully
decoded.

Fixes #8962.

Change-Id: Ia320d4dc2c6e9e5fe6d8dc15788c81da23d20c4f
Reviewed-on: https://go-review.googlesource.com/9371
Reviewed-by: Peter Waldschmidt <peter@waldschmidt.com>
Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-15 16:26:53 +00:00
Daniel Morsing
5726af54eb cmd/internal/gc: ignore declarations of types for goto validation
Fixes #8042.

Change-Id: I75080f24104256065fd73b07a13c5b8e7d6da94c
Reviewed-on: https://go-review.googlesource.com/9442
Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-15 16:03:47 +00:00
Josh Bleecher Snyder
76ec0ee53a cmd/internal/gc: separate Name-only Node fields
Name will be converted from an anonymous to a
named field in a subsequent, automated CL.

No functional changes. Passes toolstash -cmp.

This reduces the size of gc.Node from 424 to 400 bytes.
This in turn reduces the permanent (pprof -inuse_space)
memory usage while compiling the test/rotate?.go tests:

test	old(MB)	new(MB)	change
rotate0	379.49	367.30	-3.21%
rotate1	373.42	361.59	-3.16%
rotate2	381.17	368.77	-3.25%
rotate3	374.30	362.48	-3.15%

Updates #9933.

Change-Id: I21479527c136add4f1efb9342774e3be3e276e83
Reviewed-on: https://go-review.googlesource.com/10120
Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-15 15:22:12 +00:00
Josh Bleecher Snyder
13485be939 cmd/internal/gc: convert Val.U to interface{}
This CL was generated by updating Val in go.go
and then running:

sed -i "" 's/\.U\.[SBXFC]val = /.U = /' *.go
sed -i "" 's/\.U\.Sval/.U.\(string\)/g' *.go *.y
sed -i "" 's/\.U\.Bval/.U.\(bool\)/g' *.go *.y
sed -i "" 's/\.U\.Xval/.U.\(\*Mpint\)/g' *.go *.y
sed -i "" 's/\.U\.Fval/.U.\(\*Mpflt\)/g' *.go *.y
sed -i "" 's/\.U\.Cval/.U.\(\*Mpcplx\)/g' *.go *.y

No functional changes. Passes toolstash -cmp.

This reduces the size of gc.Node from 424 to 392 bytes.
This in turn reduces the permanent (pprof -inuse_space)
memory usage while compiling the test/rotate?.go tests:

test	old(MB)	new(MB)	change
rotate0	379.49	364.78	-3.87%
rotate1	373.42	359.07	-3.84%
rotate2	381.17	366.24	-3.91%
rotate3	374.30	359.95	-3.83%

CL 8445 was similar to this; gri asked that Val's implementation
be hidden first. CLs 8912, 9263, and 9267 have at least
isolated the changes to the cmd/internal/gc package.

Updates #9933.

Change-Id: I83ddfe003d48e0a73c92e819edd3b5e620023084
Reviewed-on: https://go-review.googlesource.com/10059
Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-15 15:12:42 +00:00
Josh Bleecher Snyder
3c06cff7d1 cmd/internal/gc: explicitly set zero bool Val
This trivial change is a prerequisite to
converting Val.U to an interface{}.

No functional changes. Passes toolstash -cmp.

Change-Id: I17ff036f68d29a9ed0097a8b23ae1c91e6ce8c21
Reviewed-on: https://go-review.googlesource.com/10058
Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-15 15:01:22 +00:00
Josh Bleecher Snyder
ba57781181 cmd/5g, etc: prepare Node.Val to be unexported
Remove all uses of Node.Val outside of the gc package.

A subsequent, automated commit in the Go 1.6 cycle
will unexport Node.Val.

No functional changes. Passes toolstash -cmp.

Change-Id: Ia92ae6a7766c83ab3e45c69edab24a9581c824f9
Reviewed-on: https://go-review.googlesource.com/9267
Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-15 14:59:48 +00:00
Josh Bleecher Snyder
0112f6f6b6 cmd/5g, etc: prepare to unexport gc.Mp*
Remove all uses of Mp* outside of the gc package.

A subsequent, automated commit in the Go 1.6
cycle will unexport all Mp* functions and types.

No functional changes. Passes toolstash -cmp.

Change-Id: Ie1604cb5b84ffb30b47f4777d4235570f2c62709
Reviewed-on: https://go-review.googlesource.com/9263
Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-15 14:16:40 +00:00
Russ Cox
7e26a2d9a8 runtime: allocate map element zero values for reflect-created types on demand
Preallocating them in reflect means that
(1) if you say _ = PtrTo(ArrayOf(1000000000, reflect.TypeOf(byte(0)))), you just allocated 1GB of data
(2) if you say it again, that's *another* GB of data.

The only use of t.zero in the runtime is for map elements.
Delay the allocation until the creation of a map with that element type,
and share the zeros.

The one downside of the shared zero is that it's not garbage collected,
but it's also never written, so the OS should be able to handle it fairly
efficiently.

Change-Id: I56b098a091abf3ac0945de28ebef9a6c08e76614
Reviewed-on: https://go-review.googlesource.com/10111
Reviewed-by: Keith Randall <khr@golang.org>
2015-05-15 13:56:40 +00:00
Russ Cox
65c4d7beab runtime: optimize heapBitsBulkBarrier a tiny amount
This may be mostly noise but:

name                   old mean              new mean              delta
BinaryTree17            6.03s × (0.98,1.02)   5.98s × (0.97,1.03)    ~    (p=0.306)
Fannkuch11              4.42s × (0.99,1.01)   4.34s × (0.99,1.02)  -1.83% (p=0.000)
FmtFprintfEmpty        84.7ns × (0.99,1.01)  84.4ns × (1.00,1.00)    ~    (p=0.138)
FmtFprintfString        289ns × (0.98,1.02)   289ns × (1.00,1.01)    ~    (p=0.509)
FmtFprintfInt           280ns × (0.97,1.03)   272ns × (0.98,1.03)  -2.64% (p=0.003)
FmtFprintfIntInt        484ns × (0.98,1.02)   482ns × (0.98,1.03)    ~    (p=0.606)
FmtFprintfPrefixedInt   397ns × (0.98,1.03)   393ns × (0.99,1.02)    ~    (p=0.064)
FmtFprintfFloat         573ns × (0.99,1.01)   569ns × (0.99,1.01)  -0.69% (p=0.023)
FmtManyArgs            1.89µs × (0.99,1.02)  1.91µs × (0.98,1.02)    ~    (p=0.219)
GobDecode              15.4ms × (0.99,1.02)  15.1ms × (0.99,1.01)  -2.05% (p=0.000)
GobEncode              12.0ms × (0.97,1.04)  11.9ms × (0.97,1.03)    ~    (p=0.458)
Gzip                    652ms × (0.99,1.01)   653ms × (0.99,1.01)    ~    (p=0.743)
Gunzip                  144ms × (0.99,1.01)   143ms × (0.99,1.01)    ~    (p=0.134)
HTTPClientServer       91.6µs × (0.99,1.01)  91.8µs × (0.99,1.03)    ~    (p=0.678)
JSONEncode             31.9ms × (1.00,1.00)  32.0ms × (0.99,1.01)    ~    (p=0.334)
JSONDecode              110ms × (0.99,1.01)   110ms × (0.99,1.01)    ~    (p=0.315)
Mandelbrot200          6.04ms × (0.99,1.01)  6.04ms × (1.00,1.01)    ~    (p=0.596)
GoParse                6.72ms × (0.98,1.03)  6.74ms × (0.99,1.03)    ~    (p=0.577)
RegexpMatchEasy0_32     161ns × (0.99,1.01)   160ns × (1.00,1.00)  -0.83% (p=0.002)
RegexpMatchEasy0_1K     542ns × (0.99,1.02)   541ns × (0.99,1.01)    ~    (p=0.396)
RegexpMatchEasy1_32     140ns × (0.98,1.01)   137ns × (1.00,1.00)  -2.12% (p=0.000)
RegexpMatchEasy1_1K     892ns × (0.99,1.01)   891ns × (1.00,1.01)    ~    (p=0.631)
RegexpMatchMedium_32    255ns × (0.99,1.01)   253ns × (0.99,1.01)  -0.76% (p=0.008)
RegexpMatchMedium_1K   73.1µs × (1.00,1.01)  72.9µs × (1.00,1.00)    ~    (p=0.229)
RegexpMatchHard_32     3.86µs × (1.00,1.01)  3.85µs × (1.00,1.00)    ~    (p=0.341)
RegexpMatchHard_1K      117µs × (1.00,1.01)   117µs × (0.99,1.00)    ~    (p=0.955)
Revcomp                 954ms × (0.97,1.03)   955ms × (0.98,1.02)    ~    (p=0.894)
Template                133ms × (0.97,1.05)   129ms × (0.99,1.02)  -2.50% (p=0.014)
TimeParse               629ns × (0.99,1.01)   626ns × (0.99,1.01)    ~    (p=0.106)
TimeFormat              663ns × (0.99,1.01)   660ns × (0.99,1.02)    ~    (p=0.231)

Change-Id: I580e03ed01b0629cb5eae4c4637618f20127f924
Reviewed-on: https://go-review.googlesource.com/9994
Reviewed-by: Austin Clements <austin@google.com>
2015-05-15 13:52:00 +00:00
Russ Cox
497970f421 runtime: use memmove during slice append
The effect of this CL:

name                   old mean              new mean              delta
BinaryTree17            5.97s × (0.96,1.04)   5.95s × (0.98,1.02)    ~    (p=0.697)
Fannkuch11              4.39s × (1.00,1.01)   4.41s × (1.00,1.01)  +0.52% (p=0.015)
FmtFprintfEmpty        90.8ns × (0.97,1.05)  89.4ns × (0.94,1.13)    ~    (p=0.571)
FmtFprintfString        305ns × (0.99,1.01)   292ns × (0.98,1.05)  -4.35% (p=0.000)
FmtFprintfInt           278ns × (0.96,1.03)   279ns × (0.98,1.04)    ~    (p=0.741)
FmtFprintfIntInt        489ns × (0.99,1.02)   482ns × (0.98,1.03)  -1.43% (p=0.024)
FmtFprintfPrefixedInt   402ns × (0.98,1.02)   395ns × (0.98,1.03)  -1.67% (p=0.014)
FmtFprintfFloat         578ns × (1.00,1.00)   569ns × (0.99,1.01)  -1.48% (p=0.000)
FmtManyArgs            1.88µs × (0.99,1.01)  1.88µs × (1.00,1.01)    ~    (p=0.055)
GobDecode              15.3ms × (0.99,1.01)  15.2ms × (1.00,1.01)  -0.61% (p=0.007)
GobEncode              11.8ms × (0.98,1.05)  11.6ms × (0.99,1.01)    ~    (p=0.075)
Gzip                    647ms × (0.99,1.01)   647ms × (1.00,1.00)    ~    (p=0.790)
Gunzip                  143ms × (1.00,1.00)   142ms × (1.00,1.00)    ~    (p=0.370)
HTTPClientServer       91.2µs × (0.99,1.01)  91.7µs × (0.99,1.02)    ~    (p=0.233)
JSONEncode             31.5ms × (0.98,1.01)  31.8ms × (0.99,1.02)  +1.09% (p=0.015)
JSONDecode              110ms × (0.99,1.01)   110ms × (0.99,1.02)    ~    (p=0.577)
Mandelbrot200          6.00ms × (1.00,1.00)  6.02ms × (1.00,1.00)  +0.24% (p=0.001)
GoParse                6.68ms × (0.98,1.02)  6.61ms × (0.99,1.01)  -1.10% (p=0.027)
RegexpMatchEasy0_32     162ns × (1.00,1.00)   161ns × (1.00,1.01)  -0.66% (p=0.001)
RegexpMatchEasy0_1K     539ns × (1.00,1.00)   539ns × (0.99,1.01)    ~    (p=0.509)
RegexpMatchEasy1_32     140ns × (0.99,1.02)   139ns × (0.99,1.02)    ~    (p=0.163)
RegexpMatchEasy1_1K     886ns × (1.00,1.00)   887ns × (1.00,1.00)    ~    (p=0.408)
RegexpMatchMedium_32    252ns × (1.00,1.00)   255ns × (0.99,1.01)  +1.01% (p=0.000)
RegexpMatchMedium_1K   72.6µs × (1.00,1.00)  72.6µs × (1.00,1.00)    ~    (p=0.176)
RegexpMatchHard_32     3.84µs × (1.00,1.00)  3.84µs × (1.00,1.00)    ~    (p=0.403)
RegexpMatchHard_1K      117µs × (1.00,1.00)   117µs × (1.00,1.00)    ~    (p=0.351)
Revcomp                 926ms × (0.99,1.01)   925ms × (0.99,1.01)    ~    (p=0.541)
Template                126ms × (0.99,1.02)   130ms × (0.99,1.01)  +3.42% (p=0.000)
TimeParse               632ns × (0.99,1.01)   626ns × (1.00,1.00)  -0.88% (p=0.000)
TimeFormat              658ns × (0.99,1.01)   662ns × (0.99,1.02)    ~    (p=0.111)

The effect of this CL combined with CL 9886:

name                   old mean              new mean              delta
BinaryTree17            5.90s × (0.98,1.03)   5.95s × (0.98,1.02)    ~    (p=0.175)
Fannkuch11              4.34s × (1.00,1.00)   4.41s × (1.00,1.01)  +1.69% (p=0.000)
FmtFprintfEmpty        87.3ns × (0.97,1.17)  89.4ns × (0.94,1.13)    ~    (p=0.499)
FmtFprintfString        288ns × (0.98,1.04)   292ns × (0.98,1.05)    ~    (p=0.292)
FmtFprintfInt           290ns × (0.98,1.05)   279ns × (0.98,1.04)  -3.76% (p=0.001)
FmtFprintfIntInt        493ns × (0.98,1.04)   482ns × (0.98,1.03)  -2.27% (p=0.017)
FmtFprintfPrefixedInt   399ns × (0.98,1.02)   395ns × (0.98,1.03)    ~    (p=0.159)
FmtFprintfFloat         569ns × (1.00,1.00)   569ns × (0.99,1.01)    ~    (p=0.847)
FmtManyArgs            1.90µs × (0.99,1.03)  1.88µs × (1.00,1.01)  -1.14% (p=0.009)
GobDecode              15.2ms × (1.00,1.01)  15.2ms × (1.00,1.01)    ~    (p=0.170)
GobEncode              11.8ms × (0.99,1.02)  11.6ms × (0.99,1.01)  -1.47% (p=0.003)
Gzip                    649ms × (0.99,1.00)   647ms × (1.00,1.00)    ~    (p=0.200)
Gunzip                  144ms × (0.99,1.01)   142ms × (1.00,1.00)  -1.04% (p=0.000)
HTTPClientServer       91.1µs × (0.98,1.03)  91.7µs × (0.99,1.02)    ~    (p=0.345)
JSONEncode             31.5ms × (0.99,1.01)  31.8ms × (0.99,1.02)  +0.98% (p=0.021)
JSONDecode              110ms × (1.00,1.01)   110ms × (0.99,1.02)    ~    (p=0.259)
Mandelbrot200          6.02ms × (1.00,1.01)  6.02ms × (1.00,1.00)    ~    (p=0.500)
GoParse                6.68ms × (1.00,1.01)  6.61ms × (0.99,1.01)  -1.17% (p=0.001)
RegexpMatchEasy0_32     161ns × (1.00,1.00)   161ns × (1.00,1.01)  -0.39% (p=0.033)
RegexpMatchEasy0_1K     539ns × (1.00,1.00)   539ns × (0.99,1.01)    ~    (p=0.445)
RegexpMatchEasy1_32     138ns × (1.00,1.01)   139ns × (0.99,1.02)    ~    (p=0.281)
RegexpMatchEasy1_1K     887ns × (1.00,1.01)   887ns × (1.00,1.00)    ~    (p=0.610)
RegexpMatchMedium_32    251ns × (1.00,1.02)   255ns × (0.99,1.01)  +1.42% (p=0.000)
RegexpMatchMedium_1K   72.7µs × (1.00,1.00)  72.6µs × (1.00,1.00)    ~    (p=0.097)
RegexpMatchHard_32     3.85µs × (1.00,1.00)  3.84µs × (1.00,1.00)  -0.31% (p=0.000)
RegexpMatchHard_1K      117µs × (1.00,1.00)   117µs × (1.00,1.00)    ~    (p=0.704)
Revcomp                 923ms × (0.98,1.02)   925ms × (0.99,1.01)    ~    (p=0.574)
Template                126ms × (0.98,1.03)   130ms × (0.99,1.01)  +3.28% (p=0.000)
TimeParse               631ns × (0.99,1.02)   626ns × (1.00,1.00)    ~    (p=0.053)
TimeFormat              660ns × (0.99,1.01)   662ns × (0.99,1.02)    ~    (p=0.398)

Change-Id: I59c03d329fe7bc178a31477c6f1f01062b881041
Reviewed-on: https://go-review.googlesource.com/9993
Reviewed-by: Austin Clements <austin@google.com>
2015-05-15 13:51:49 +00:00
David Symonds
3b214175bc cmd/go: fix count of number of reserved names (doc change).
Change-Id: I2784f831453d929df64c66febb4982cdf1f08e06
Reviewed-on: https://go-review.googlesource.com/10133
Reviewed-by: Minux Ma <minux@golang.org>
2015-05-15 05:53:39 +00:00
Patrick Mezard
335e44d265 internal/syscall/windows/registry: fix read overrun in GetStringsValue
According to MSDN RegQueryValueEx page:

  If the data has the REG_SZ, REG_MULTI_SZ or REG_EXPAND_SZ type, the
  string may not have been stored with the proper terminating null
  characters. Therefore, even if the function returns ERROR_SUCCESS, the
  application should ensure that the string is properly terminated before
  using it; otherwise, it may overwrite a buffer. (Note that REG_MULTI_SZ
  strings should have two terminating null characters.)

Test written by Alex Brainman <alex.brainman@gmail.com>

Change-Id: I8c0852e0527e27ceed949134ed5e6de944189986
Reviewed-on: https://go-review.googlesource.com/9806
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Run-TryBot: Alex Brainman <alex.brainman@gmail.com>
2015-05-15 03:25:41 +00:00
Shenghou Ma
ed8ae79282 syscall: add test for Flock_t roundtrip
See CL 9962 for the rationale.

Change-Id: I73c714fce258430eea1e61d3835f5c8e9014ca1f
Signed-off-by: Shenghou Ma <minux@golang.org>
Reviewed-on: https://go-review.googlesource.com/9925
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-15 01:45:49 +00:00
Shenghou Ma
38631846bf syscall: add explicit build tags
Auto-generated using the following bash script:
for i in z*_*_*.go; do
        goosgoarch=`basename ${i/${i/_*/}_/} .go`
        goos=${goosgoarch/_*/}
        goarch=${goosgoarch/*_/}
        echo $i $goos $goarch
        [ "$goos" = "windows" ] && continue
        sed -i -e "/^package /i\/\/ +build $goarch,$goos\n" "$i"
done

Change-Id: I756fee551d1698080e4591fed8f058ae0450aaa5
Signed-off-by: Shenghou Ma <minux@golang.org>
Reviewed-on: https://go-review.googlesource.com/10113
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-15 01:04:27 +00:00
Mikio Hara
37eb1d1964 cmd/doc: fix build
Change-Id: Ic8437a1d2aeb424d6d5ce9e608c1293bba4c7bbc
Reviewed-on: https://go-review.googlesource.com/10093
Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2015-05-15 00:48:46 +00:00
Shenghou Ma
5069452d6d syscall: fix F_SETLK{,W} on linux/ppc64
Change-Id: Ia81675b0f01ceafada32bdd2bc59088016a7421e
Reviewed-on: https://go-review.googlesource.com/10043
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-15 00:28:49 +00:00
Rob Pike
83c7b60f27 cmd/doc: trim unexported methods from interfaces
Fixes #10856.

Change-Id: I5de65b8dd94eec3451ee0ba9c75698cdd88f5fea
Reviewed-on: https://go-review.googlesource.com/10088
Reviewed-by: Andrew Gerrand <adg@golang.org>
2015-05-14 23:23:18 +00:00
Brad Fitzpatrick
fb7e2449b6 doc: update go1.5.txt
Change-Id: Idbceaa44f4c823510632381b36b42302e63d8a29
Reviewed-on: https://go-review.googlesource.com/10057
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2015-05-14 23:03:29 +00:00
Robert Griesemer
5abdc24b00 go/types: remove "vendoring" script - not useful anymore
Change-Id: I4f4e6b99a22054666cd2284679cb0eca7f1042b8
Reviewed-on: https://go-review.googlesource.com/10086
Reviewed-by: Rob Pike <r@golang.org>
2015-05-14 22:16:50 +00:00
Russ Cox
a4292c3120 api: refresh next.txt
Change-Id: I5e902bb3a3a51620b21840783087ed3cc410dbc5
Reviewed-on: https://go-review.googlesource.com/10048
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2015-05-14 21:31:18 +00:00
Brad Fitzpatrick
a901d7fb8f cmd/dist: support test filtering via repurposed env variable, negation
For upcoming sharded ARM builders.

Updates #10029

Change-Id: I3b1df9560be697c514a8ced0462814d406e23132
Reviewed-on: https://go-review.googlesource.com/10055
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2015-05-14 20:43:55 +00:00
Shenghou Ma
1e7f57954b go/build: introduce go1.5 build tag
Change-Id: Iab2f8e1c4443f39b79c1c63a7a30062074b48764
Signed-off-by: Shenghou Ma <minux@golang.org>
Reviewed-on: https://go-review.googlesource.com/10042
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2015-05-14 20:23:27 +00:00
Russ Cox
30aacd4ce2 runtime: add Node128, Node130 benchmarks
Change-Id: I815a7ceeea48cc652b3c8568967665af39b02834
Reviewed-on: https://go-review.googlesource.com/10045
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2015-05-14 20:21:34 +00:00
Robert Griesemer
138498183c go/types: remove _ imports that are not needed anymore
Change-Id: I392b0a0083d6bea80a65f9eef46dd06b02a70e1b
Reviewed-on: https://go-review.googlesource.com/10082
Reviewed-by: Alan Donovan <adonovan@google.com>
2015-05-14 18:39:46 +00:00
Robert Griesemer
d2130573e8 go/scanner: don't return previous comment as literal value if none is expected
Fixes #10213.

Change-Id: Ia587dd51eea702058da926717ad305792c9fc42b
Reviewed-on: https://go-review.googlesource.com/10081
Reviewed-by: Alan Donovan <adonovan@google.com>
2015-05-14 18:39:04 +00:00
Rob Pike
92bdbb8a3c text/template: need to validate type when an argument is a function call
Missed a case; just need to call validateType.

Fixes #10800.

Change-Id: I81997ca7a9feb1be31c8b47e631b32712d7ffb86
Reviewed-on: https://go-review.googlesource.com/10031
Reviewed-by: Andrew Gerrand <adg@golang.org>
2015-05-14 17:47:06 +00:00
Russ Cox
ecfe42cab0 runtime: keep pointer bits set always in 1-word spans
It's dumb to clear them in initSpan, set them in heapBitsSetType,
clear them in heapBitsSweepSpan, set them again in heapBitsSetType,
clear them again in heapBitsSweepSpan, and so on.

Set them in initSpan and be done with it (until the span is reused
for objects of a different size).

This avoids an atomic operation in a common case (one-word allocation).
Suggested by rlh.

name                   old mean              new mean              delta
BinaryTree17            5.87s × (0.97,1.03)   5.93s × (0.98,1.04)              ~    (p=0.056)
Fannkuch11              4.34s × (1.00,1.01)   4.41s × (1.00,1.00)            +1.42% (p=0.000)
FmtFprintfEmpty        86.1ns × (0.98,1.03)  88.9ns × (0.95,1.14)              ~    (p=0.066)
FmtFprintfString        292ns × (0.97,1.04)   284ns × (0.98,1.03)            -2.64% (p=0.000)
FmtFprintfInt           271ns × (0.98,1.06)   274ns × (0.98,1.05)              ~    (p=0.148)
FmtFprintfIntInt        478ns × (0.98,1.05)   487ns × (0.98,1.03)            +1.85% (p=0.004)
FmtFprintfPrefixedInt   397ns × (0.98,1.05)   394ns × (0.98,1.02)              ~    (p=0.184)
FmtFprintfFloat         553ns × (0.99,1.02)   543ns × (0.99,1.01)            -1.71% (p=0.000)
FmtManyArgs            1.90µs × (0.98,1.05)  1.88µs × (0.99,1.01)            -0.97% (p=0.037)
GobDecode              15.1ms × (0.99,1.01)  15.3ms × (0.99,1.01)            +0.78% (p=0.001)
GobEncode              11.7ms × (0.98,1.05)  11.6ms × (0.99,1.02)            -1.39% (p=0.009)
Gzip                    646ms × (1.00,1.01)   647ms × (1.00,1.01)              ~    (p=0.120)
Gunzip                  142ms × (1.00,1.00)   142ms × (1.00,1.00)              ~    (p=0.068)
HTTPClientServer       89.7µs × (0.99,1.01)  90.1µs × (0.98,1.03)              ~    (p=0.224)
JSONEncode             31.3ms × (0.99,1.01)  31.2ms × (0.99,1.02)              ~    (p=0.149)
JSONDecode              113ms × (0.99,1.01)   111ms × (0.99,1.01)            -1.25% (p=0.000)
Mandelbrot200          6.01ms × (1.00,1.00)  6.01ms × (1.00,1.00)            +0.09% (p=0.015)
GoParse                6.63ms × (0.98,1.03)  6.55ms × (0.99,1.02)            -1.10% (p=0.006)
RegexpMatchEasy0_32     161ns × (1.00,1.00)   161ns × (1.00,1.00)  (sample has zero variance)
RegexpMatchEasy0_1K     539ns × (0.99,1.01)   563ns × (0.99,1.01)            +4.51% (p=0.000)
RegexpMatchEasy1_32     140ns × (0.99,1.01)   141ns × (0.99,1.01)            +1.34% (p=0.000)
RegexpMatchEasy1_1K     886ns × (1.00,1.01)   888ns × (1.00,1.00)            +0.20% (p=0.003)
RegexpMatchMedium_32    252ns × (1.00,1.02)   255ns × (0.99,1.01)            +1.32% (p=0.000)
RegexpMatchMedium_1K   72.7µs × (1.00,1.00)  72.6µs × (1.00,1.00)              ~    (p=0.296)
RegexpMatchHard_32     3.84µs × (1.00,1.01)  3.84µs × (1.00,1.00)              ~    (p=0.339)
RegexpMatchHard_1K      117µs × (1.00,1.01)   117µs × (1.00,1.00)            -0.28% (p=0.022)
Revcomp                 914ms × (0.99,1.01)   909ms × (0.99,1.01)            -0.49% (p=0.031)
Template                128ms × (0.99,1.01)   127ms × (0.99,1.01)            -1.10% (p=0.000)
TimeParse               628ns × (0.99,1.01)   639ns × (0.99,1.01)            +1.69% (p=0.000)
TimeFormat              660ns × (0.99,1.01)   662ns × (0.99,1.02)              ~    (p=0.287)

Change-Id: I3127b0ab89708267c74aa7d0eae1db1a1bcdfda5
Reviewed-on: https://go-review.googlesource.com/9884
Reviewed-by: Austin Clements <austin@google.com>
2015-05-14 15:58:54 +00:00
Russ Cox
94934f843e runtime: rewrite addb/subtractb to be simpler to compile; introduce add1, subtract1
This reduces the depth of the inlining at a particular call site.
The inliner introduces many temporary variables, and the compiler can do
a better job with fewer. Being verbose in the bodies of these helper functions
seems like a reasonable tradeoff: the uses are still just as readable, and
they run faster in some important cases.

Change-Id: I5323976ed3704d0acd18fb31176cfbf5ba23a89c
Reviewed-on: https://go-review.googlesource.com/9883
Reviewed-by: Rick Hudson <rlh@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
2015-05-14 15:55:42 +00:00
Russ Cox
5b3739357a runtime: skip atomics in heapBitsSetType when GC is not running
Suggested by Rick during code review of this code,
but separated out for easier diagnosis in case it causes
problems (and also easier rollback).

name                    old mean              new mean              delta
SetTypePtr              13.9ns × (0.98,1.05)   6.2ns × (0.99,1.01)  -55.18% (p=0.000)
SetTypePtr8             15.5ns × (0.95,1.10)  15.5ns × (0.99,1.05)     ~    (p=0.952)
SetTypePtr16            17.8ns × (0.99,1.05)  18.0ns × (1.00,1.00)     ~    (p=0.157)
SetTypePtr32            25.2ns × (0.99,1.01)  24.3ns × (0.99,1.01)   -3.86% (p=0.000)
SetTypePtr64            42.2ns × (0.93,1.13)  40.8ns × (0.99,1.01)     ~    (p=0.239)
SetTypePtr126           67.3ns × (1.00,1.00)  67.5ns × (0.99,1.02)     ~    (p=0.365)
SetTypePtr128           67.6ns × (1.00,1.01)  70.1ns × (0.97,1.10)     ~    (p=0.063)
SetTypePtrSlice          575ns × (0.98,1.06)   543ns × (0.95,1.17)   -5.54% (p=0.034)
SetTypeNode1            12.4ns × (0.98,1.09)  12.8ns × (0.99,1.01)   +3.40% (p=0.021)
SetTypeNode1Slice       97.1ns × (0.97,1.09)  89.5ns × (1.00,1.00)   -7.78% (p=0.000)
SetTypeNode8            29.8ns × (1.00,1.01)  17.7ns × (1.00,1.01)  -40.74% (p=0.000)
SetTypeNode8Slice        204ns × (0.99,1.04)   190ns × (0.97,1.06)   -6.96% (p=0.000)
SetTypeNode64           42.8ns × (0.99,1.01)  44.0ns × (0.95,1.12)     ~    (p=0.163)
SetTypeNode64Slice      1.00µs × (0.95,1.09)  0.98µs × (0.96,1.08)     ~    (p=0.356)
SetTypeNode64Dead       12.2ns × (0.99,1.04)  12.7ns × (1.00,1.01)   +4.34% (p=0.000)
SetTypeNode64DeadSlice  1.14µs × (0.94,1.11)  0.99µs × (0.99,1.03)  -13.74% (p=0.000)
SetTypeNode124          67.9ns × (0.99,1.03)  70.4ns × (0.95,1.15)     ~    (p=0.115)
SetTypeNode124Slice     1.76µs × (0.99,1.04)  1.88µs × (0.91,1.23)     ~    (p=0.096)
SetTypeNode126          67.7ns × (1.00,1.01)  68.2ns × (0.99,1.02)   +0.72% (p=0.014)
SetTypeNode126Slice     1.76µs × (1.00,1.01)  1.87µs × (0.93,1.15)   +6.15% (p=0.035)
SetTypeNode1024          462ns × (0.96,1.10)   451ns × (0.99,1.05)     ~    (p=0.224)
SetTypeNode1024Slice    14.4µs × (0.95,1.15)  14.2µs × (0.97,1.19)     ~    (p=0.676)

name                   old mean              new mean              delta
BinaryTree17            5.87s × (0.98,1.04)   5.87s × (0.98,1.03)    ~    (p=0.993)
Fannkuch11              4.39s × (0.99,1.01)   4.34s × (1.00,1.01)  -1.22% (p=0.000)
FmtFprintfEmpty        90.6ns × (0.97,1.06)  89.4ns × (0.97,1.03)    ~    (p=0.070)
FmtFprintfString        305ns × (0.98,1.02)   296ns × (0.99,1.02)  -2.94% (p=0.000)
FmtFprintfInt           276ns × (0.97,1.04)   270ns × (0.98,1.03)  -2.17% (p=0.001)
FmtFprintfIntInt        490ns × (0.97,1.05)   473ns × (0.99,1.02)  -3.59% (p=0.000)
FmtFprintfPrefixedInt   402ns × (0.99,1.02)   397ns × (0.99,1.01)  -1.15% (p=0.000)
FmtFprintfFloat         577ns × (0.99,1.01)   549ns × (0.99,1.01)  -4.78% (p=0.000)
FmtManyArgs            1.89µs × (0.99,1.02)  1.87µs × (0.99,1.01)  -1.43% (p=0.000)
GobDecode              15.2ms × (0.99,1.01)  14.7ms × (0.99,1.02)  -3.55% (p=0.000)
GobEncode              11.7ms × (0.98,1.04)  11.5ms × (0.99,1.02)  -1.63% (p=0.002)
Gzip                    647ms × (0.99,1.01)   647ms × (1.00,1.01)    ~    (p=0.486)
Gunzip                  142ms × (1.00,1.00)   143ms × (1.00,1.00)    ~    (p=0.234)
HTTPClientServer       90.7µs × (0.99,1.01)  90.4µs × (0.98,1.04)    ~    (p=0.331)
JSONEncode             31.9ms × (0.97,1.06)  31.6ms × (0.98,1.02)    ~    (p=0.206)
JSONDecode              110ms × (0.99,1.01)   112ms × (0.99,1.02)  +1.48% (p=0.000)
Mandelbrot200          6.00ms × (1.00,1.00)  6.01ms × (1.00,1.00)    ~    (p=0.058)
GoParse                6.63ms × (0.98,1.03)  6.61ms × (0.98,1.02)    ~    (p=0.353)
RegexpMatchEasy0_32     162ns × (0.99,1.01)   161ns × (1.00,1.00)  -0.33% (p=0.004)
RegexpMatchEasy0_1K     539ns × (0.99,1.01)   540ns × (0.99,1.02)    ~    (p=0.222)
RegexpMatchEasy1_32     139ns × (0.99,1.01)   140ns × (0.97,1.03)    ~    (p=0.054)
RegexpMatchEasy1_1K     886ns × (1.00,1.00)   887ns × (1.00,1.00)  +0.18% (p=0.001)
RegexpMatchMedium_32    252ns × (1.00,1.01)   252ns × (1.00,1.00)  +0.21% (p=0.010)
RegexpMatchMedium_1K   72.7µs × (1.00,1.01)  72.6µs × (1.00,1.00)    ~    (p=0.060)
RegexpMatchHard_32     3.84µs × (1.00,1.00)  3.84µs × (1.00,1.00)    ~    (p=0.065)
RegexpMatchHard_1K      117µs × (1.00,1.00)   117µs × (1.00,1.00)  -0.27% (p=0.000)
Revcomp                 916ms × (0.98,1.04)   909ms × (0.99,1.01)    ~    (p=0.054)
Template                126ms × (0.99,1.01)   128ms × (0.99,1.02)  +1.43% (p=0.000)
TimeParse               632ns × (0.99,1.01)   625ns × (1.00,1.01)  -1.05% (p=0.000)
TimeFormat              655ns × (0.99,1.02)   669ns × (0.99,1.02)  +2.01% (p=0.000)

Change-Id: I9477b7c9489c6fa98e860c190ce06cd73c53c6a1
Reviewed-on: https://go-review.googlesource.com/9829
Reviewed-by: Rick Hudson <rlh@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
2015-05-14 15:54:53 +00:00
Mikio Hara
b83b011100 net: fix vet missed format error in test
Change-Id: I73c0aeb4b27fec84149c8e89753b27ff2190eabf
Reviewed-on: https://go-review.googlesource.com/10074
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
2015-05-14 07:18:36 +00:00
Shenghou Ma
85a1577800 math/big, cmd/internal/gc/big: fix vet detected printf problem
Change-Id: I54425d8cbe0277d7a0c9d66c37f2128a0dfa6441
Reviewed-on: https://go-review.googlesource.com/10041
Run-TryBot: Minux Ma <minux@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2015-05-14 05:34:40 +00:00
Shenghou Ma
b3fb0fdd3f cmd/internal/gc: fix vet detected printf problems
Fixes #10805.

Change-Id: Ia77639e606a0c18fc53cba9749d92f325014025f
Reviewed-on: https://go-review.googlesource.com/10040
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2015-05-14 05:34:29 +00:00
Josh Bleecher Snyder
dbf533a546 encoding/json: make BenchmarkSkipValue more stable
BenchmarkSkipValue was sensitive to the value of
b.N due to its significant startup cost.

Two adjacent runs before this CL:

BenchmarkSkipValue	      50	  21047499 ns/op	  93.37 MB/s
BenchmarkSkipValue	     100	  17260554 ns/op	 118.05 MB/s

After this CL, using benchtime to recreate the
difference in b.N:

BenchmarkSkipValue	      50	  15204797 ns/op	 131.67 MB/s
BenchmarkSkipValue	     100	  15332319 ns/op	 130.58 MB/s

Change-Id: Iac86f86dd774d535302fa5e4c08f89f8da00be9e
Reviewed-on: https://go-review.googlesource.com/10053
Reviewed-by: Andrew Gerrand <adg@golang.org>
2015-05-14 02:32:28 +00:00
Mikio Hara
ef54930ebb net: simplify sync.Once calls in tests
Change-Id: I0c2e1a4a8261887a696e585dda46e72d691191e0
Reviewed-on: https://go-review.googlesource.com/10070
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2015-05-14 01:47:35 +00:00
Brad Fitzpatrick
e5febf957f net/http: flush request body chunks in Transport
The Transport's writer to the remote server is wrapped in a
bufio.Writer to suppress many small writes while writing headers and
trailers. However, when writing the request body, the buffering may get
in the way if the request body is arriving slowly.

Because the io.Copy from the Request.Body to the writer is already
buffered, the outer bufio.Writer is unnecessary and prevents small
Request.Body.Reads from going to the server right away. (and the
io.Reader contract does say to return when you've got something,
instead of blocking waiting for more). After the body is finished, the
Transport's bufio.Writer is still used for any trailers following.

A previous attempted fix for this made the chunk writer always flush
if the underlying type was a bufio.Writer, but that is not quite
correct. This CL instead makes it opt-in by using a private sentinel
type (wrapping a *bufio.Writer) to the chunk writer that requests
Flushes after each chunk body (the chunk header & chunk body are still
buffered together into one write).

Fixes #6574

Change-Id: Icefcdf17130c9e285c80b69af295bfd3e72c3a70
Reviewed-on: https://go-review.googlesource.com/10021
Reviewed-by: Andrew Gerrand <adg@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2015-05-14 00:29:24 +00:00
Brad Fitzpatrick
5c7f94421e cmd/internal/obj: validate GOARM environment variable's value before use
I was previously setting GOARM=arm5 (due to confusion with previously
seeing buildall.sh's temporary of "arm5" as a GOARCH and
misremembernig), but GOARM=arm5 was acting like GOARM=5 only on
accident. See https://go-review.googlesource.com/#/c/10023/

Instead, fail if GOARM is not a known value.

Change-Id: I9ba4fd7268df233d40b09f0431f37cd85a049847
Reviewed-on: https://go-review.googlesource.com/10024
Reviewed-by: Minux Ma <minux@golang.org>
2015-05-13 23:27:26 +00:00
Robert Griesemer
fd5b8aa799 text/scanner: avoid further reads after EOF
Fixes #10735.

Change-Id: I5c6e424653657c89da176136ac56597c7565abe5
Reviewed-on: https://go-review.googlesource.com/10039
Reviewed-by: Rob Pike <r@golang.org>
2015-05-13 23:14:50 +00:00
Brad Fitzpatrick
f8fbcefa6c math/rand: shorten Float32 test for GOARM=5
Fixes #10749

Change-Id: I9d5f6f179fd117b0c358d7c8042daf5985b645c0
Reviewed-on: https://go-review.googlesource.com/10022
Reviewed-by: Dave Cheney <dave@cheney.net>
2015-05-13 22:31:44 +00:00