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Commit Graph

16631 Commits

Author SHA1 Message Date
Robert Griesemer
9dcf3eee41 cmd/godoc: better console error message for example error
(per r's suggestion)

R=r
CC=golang-dev
https://golang.org/cl/7376045
2013-02-20 12:28:12 -08:00
Rob Pike
55ad7b9bfe bufio: new Scanner interface
Add a new, simple interface for scanning (probably textual) data,
based on a new type called Scanner. It does its own internal buffering,
so should be plausibly efficient even without injecting a bufio.Reader.
The format of the input is defined by a "split function", by default
splitting into lines. Other implemented split functions include single
bytes, single runes, and space-separated words.

Here's the loop to scan stdin as a file of lines:

        s := bufio.NewScanner(os.Stdin)
        for s.Scan() {
                fmt.Printf("%s\n", s.Bytes())
        }
        if s.Err() != nil {
                log.Fatal(s.Err())
        }

While we're dealing with spaces, define what space means to strings.Fields.

Fixes #4802.

R=adg, rogpeppe, bradfitz, rsc
CC=golang-dev
https://golang.org/cl/7322088
2013-02-20 12:14:31 -08:00
Robert Griesemer
75e7308be8 go/types: support for customizable Alignof, Sizeof
(Offsetof is a function of Alignof and Sizeof.)

- removed IntSize, PtrSize from Context (set Sizeof instead)
- GcImporter needs a Context now (it needs to have
  access to Sizeof/Alignof)
- removed exported Size field from Basic (use Sizeof)
- added Offset to Field
- added Alignment, Size to Struct

R=adonovan
CC=golang-dev
https://golang.org/cl/7357046
2013-02-20 11:10:17 -08:00
Dmitriy Vyukov
1e063eea38 runtime: prepare for M's running w/o mcache
Can not happen ATM. In preparation for the new scheduler.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7388043
2013-02-20 21:17:56 +04:00
Dmitriy Vyukov
e25f19a638 runtime: introduce entersyscallblock()
In preparation for the new scheduler.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7386044
2013-02-20 20:21:45 +04:00
Dmitriy Vyukov
e5b0bcebdb runtime/debug: deflake TestFreeOSMemory
This is followup to https://golang.org/cl/7319050/

R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/7379043
2013-02-20 12:34:16 +04:00
Dmitriy Vyukov
06a488fa97 runtime: fix deadlock detector false negative
Fixes #4819.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7322086
2013-02-20 12:15:02 +04:00
Dmitriy Vyukov
a92e11a256 runtime: ensure forward progress of runtime.Gosched() for locked goroutines
The removed code leads to the situation when M executes the same locked G again
and again.
This is https://golang.org/cl/7310096 but with return instead of break
in the nested switch.
Fixes #4820.

R=golang-dev, alex.brainman, rsc
CC=golang-dev
https://golang.org/cl/7304102
2013-02-20 12:13:04 +04:00
Brad Fitzpatrick
92ab6fb4e1 doc: fix old broken link
The Camlistore code tree rearranged after the go tool came
out. (I didn't know this link was here until I saw it in
some logs.)

R=adg
CC=golang-dev
https://golang.org/cl/7374043
2013-02-19 22:40:54 -08:00
Péter Surányi
b4109f801a path/filepath, os/exec: unquote PATH elements on Windows
On Windows, directory names in PATH can be fully or partially quoted
in double quotes ('"'), but the path names as used by most APIs must
be unquoted. In addition, quoted names can contain the semicolon
(';') character, which is otherwise used as ListSeparator.

This CL changes SplitList in path/filepath and LookPath in os/exec
to only	treat unquoted semicolons as separators, and to unquote the
separated elements.

(In addition, fix harmless test bug I introduced for LookPath on Unix.)

Related discussion thread:
https://groups.google.com/d/msg/golang-nuts/PXCr10DsRb4/sawZBM7scYgJ

R=rsc, minux.ma, mccoyst, alex.brainman, iant
CC=golang-dev
https://golang.org/cl/7181047
2013-02-20 16:19:52 +11:00
Brian Dellisanti
e378aef1de windows: fix syscall.SidTypeUser so following consts have correct values.
Fixes #4844.

R=golang-dev, alex.brainman
CC=golang-dev
https://golang.org/cl/7366043
2013-02-20 15:38:35 +11:00
Carl Shapiro
7f9c02a10d runtime: add conversion specifier to printf for char values
R=r, golang-dev
CC=golang-dev
https://golang.org/cl/7327053
2013-02-19 18:05:44 -08:00
Akshat Kumar
66b69a1719 net: Plan 9: open data file and set remote-addr properly
The data file should be opened when a Conn is first
established, rather than waiting for the first Read or
Write.

Upon Close, we now make sure to try to close both, the
ctl as well as data files and set both to nil, even in
the face of errors, instead of returning early.

The Accept call was not setting the remote address
of the connection properly. Now, we read the correct
file.

Make functions that establish Conn use newTCPConn
or newUDPConn.

R=rsc, rminnich, ality, dave
CC=golang-dev
https://golang.org/cl/7228068
2013-02-19 17:11:17 -08:00
Mikio Hara
40c2fbf4f2 net: set up IPv6 scoped addressing zone for network facilities
This CL changes nothing to existing API behavior, just sets up
Zone in IPNet and IPAddr structures if possible.

Also does small simplification.

Update #4234.

R=rsc, dave
CC=golang-dev
https://golang.org/cl/7300081
2013-02-20 08:18:04 +09:00
Mikio Hara
e4890e57e1 net: return correct point-to-point interface address on linux
On Linux point-to-point interface an IFA_ADDRESS attribute
represents a peer address. For a correct interface address
we should take an IFA_LOCAL attribute instead.

Fixes #4839.

R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/7352045
2013-02-20 07:31:44 +09:00
Alan Donovan
a17c46169f go/types: include package import path in NamedType.String().
This avoids ambiguity and makes the diagnostics closer to
those issued by gc, but it is more verbose since it qualifies
intra-package references.

Without extra context---e.g. a 'from *Package' parameter to
Type.String()---we are forced to err on one side or the other.

Also, cosmetic changes to exp/ssa:
- Remove package-qualification workaround in Function.FullName.
- Always set go/types.Package.Path field to the import path,
  since we know the correct path at this point.
- In Function.DumpTo, show variadic '...' and result type info,
  and delete now-redundant "# Type: " line.

R=gri
CC=golang-dev
https://golang.org/cl/7325051
2013-02-19 14:42:05 -05:00
Robert Griesemer
5c3fb96be9 exp/README: update README
R=golang-dev, dsymonds, bradfitz
CC=golang-dev
https://golang.org/cl/7323073
2013-02-19 11:21:18 -08:00
Robert Griesemer
3ee87d02b0 cmd/godoc: use go/build to determine package and example files
Also:
- faster code for example extraction
- simplify handling of command documentation:
  all "main" packages are treated as commands
- various minor cleanups along the way

For commands written in Go, any doc.go file containing
documentation must now be part of package main (rather
then package documentation), otherwise the documentation
won't show up in godoc (it will still build, though).

For commands written in C, documentation may still be
in doc.go files defining package documentation, but the
recommended way is to explicitly ignore those files with
a +build ignore constraint to define package main.

Fixes #4806.

R=adg, rsc, dave, bradfitz
CC=golang-dev
https://golang.org/cl/7333046
2013-02-19 11:19:58 -08:00
Kamil Kisiel
0456729977 path/filepath: add examples for SplitList and Rel.
R=golang-dev, bradfitz, minux.ma
CC=golang-dev
https://golang.org/cl/7291043
2013-02-19 10:41:35 -08:00
Russ Cox
6df181a7f0 path/filepath: document Dir better
This comment matches the one in path.

Fixes #4837.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7305100
2013-02-19 13:24:03 -05:00
Andrew Wilkins
1fe8fdf708 go/types: Use left-hand side's type as hint for right-hand
side expression evaluation in assignment operations.

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/7349046
2013-02-19 09:20:56 -08:00
Robin Eklind
7fdaec6c2f debug/dwarf: add flag_present attribute encoding.
ref: http://www.dwarfstd.org/doc/DWARF4.pdf

Update #4829

R=minux.ma, iant
CC=dave, golang-dev
https://golang.org/cl/7354043
2013-02-20 00:58:31 +08:00
Donovan Hide
937f91e1da strings: faster Count, Index
Slightly better benchmarks for when string and separator are equivalent and also less branching in inner loops.
benchmark                        old ns/op    new ns/op    delta
BenchmarkGenericNoMatch               3430         3442   +0.35%
BenchmarkGenericMatch1               23590        22855   -3.12%
BenchmarkGenericMatch2              108031       105025   -2.78%
BenchmarkSingleMaxSkipping            2969         2704   -8.93%
BenchmarkSingleLongSuffixFail         2826         2572   -8.99%
BenchmarkSingleMatch                205268       197832   -3.62%
BenchmarkByteByteNoMatch               987          921   -6.69%
BenchmarkByteByteMatch                2014         1749  -13.16%
BenchmarkByteStringMatch              3083         3050   -1.07%
BenchmarkHTMLEscapeNew                 922          915   -0.76%
BenchmarkHTMLEscapeOld                1654         1570   -5.08%
BenchmarkByteByteReplaces            11897        11556   -2.87%
BenchmarkByteByteMap                  4485         4255   -5.13%
BenchmarkIndexRune                     174          121  -30.46%
BenchmarkIndexRuneFastPath              41           41   -0.24%
BenchmarkIndex                          45           44   -0.22%
BenchmarkMapNoChanges                  433          431   -0.46%
BenchmarkIndexHard1                4015336      3316490  -17.40%
BenchmarkIndexHard2                3976254      3395627  -14.60%
BenchmarkIndexHard3                3973158      3378329  -14.97%
BenchmarkCountHard1                4403549      3448512  -21.69%
BenchmarkCountHard2                4387437      3413059  -22.21%
BenchmarkCountHard3                4403891      3382661  -23.19%
BenchmarkIndexTorture                28354        25864   -8.78%
BenchmarkCountTorture                29625        27463   -7.30%
BenchmarkFields                   38752040     39169840   +1.08%
BenchmarkFieldsFunc               38797765     38888060   +0.23%

benchmark                         old MB/s     new MB/s  speedup
BenchmarkSingleMaxSkipping         3367.07      3697.62    1.10x
BenchmarkSingleLongSuffixFail       354.51       389.47    1.10x
BenchmarkSingleMatch                 73.07        75.82    1.04x
BenchmarkFields                      27.06        26.77    0.99x
BenchmarkFieldsFunc                  27.03        26.96    1.00x

R=dave, fullung, remyoudompheng, rsc
CC=golang-dev
https://golang.org/cl/7350045
2013-02-19 10:36:15 -05:00
Russ Cox
9704c80b93 A+C: Donovan Hide (individual CLA)
Generated by addca.

R=gobot
CC=golang-dev
https://golang.org/cl/7351046
2013-02-19 10:36:03 -05:00
Russ Cox
f19cf640d4 codereview: give up on http fetch after 30 seconds
If Python blocks in the SSL handshake it seems to be
completely uninterruptible, and I've been seeing it
block for at least hours recently. I don't know if the
problem is on the client side or the server side or
somewhere in the network, but setting the timeout
at least means you're guaranteed a new shell prompt
(after printing some errors).

R=golang-dev, bradfitz, minux.ma
CC=golang-dev
https://golang.org/cl/7337048
2013-02-19 10:18:16 -05:00
Russ Cox
cb32ea9c19 runtime: replace bubble sort with heap sort in select
R=golang-dev, agl
CC=golang-dev
https://golang.org/cl/7304106
2013-02-19 10:15:13 -05:00
Russ Cox
a6db2a8517 reflect: document tie-breaking in Select
The exact words are taken from the spec.

Fixes some confusion on golang-nuts.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7353044
2013-02-19 10:13:53 -05:00
Robin Eklind
d137a2cb56 src: use internal tests if possible
If a test can be placed in the same package ("internal"), it is placed
there. This facilitates testing of package-private details. Because of
dependency cycles some packages cannot be tested by internal tests.

R=golang-dev, rsc, mikioh.mikioh
CC=golang-dev, r
https://golang.org/cl/7323044
2013-02-19 10:02:01 -05:00
Shenghou Ma
d251fc39f2 doc/gccgo_contribute: mention gofrontend-dev@googlegroups.com mailing list
R=iant
CC=golang-dev
https://golang.org/cl/7323064
2013-02-19 19:20:44 +08:00
Lucio De Re
7b5de7240e src/run.rc: "go env -9" is not valid, the correct command is "go tool dist env -9".
R=minux.ma, bradfitz
CC=golang-dev
https://golang.org/cl/7307120
2013-02-19 19:02:18 +08:00
Volker Dobler
6ab113531b exp/cookiejar: store cookies under TLD+1 on nil public suffix list
The current implementation would store all cookies received from
any .com domain under "com" in the entries map if a nil public
suffix list is used in constructing the Jar. This is inefficient.

This CL uses the TLD+1 of the domain if the public suffix list
is nil which has two advantages:
 - It uses the entries map efficiently.
 - It prevents a host foo.com to set cookies for bar.com.
   (It may set the cookie, but it won't be returned to bar.com.)
A domain like www.british-library.uk may still set a domain
cookie for .british-library.uk in this case.

The behavior for a non-nil public suffix list is unchanged, cookies
are stored under eTLD+1 in this case.

R=nigeltao
CC=golang-dev
https://golang.org/cl/7312105
2013-02-19 19:12:36 +11:00
Andrew Wilkins
68ff170ebe go/types: Permit dereferencing of named pointer types.
R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/7358044
2013-02-18 19:03:10 -08:00
Robert Griesemer
95aaca6708 go/types: Pkg *Package field for all objects
The field is nil for predeclared (universe)
objects and parameter/result variables.

R=adonovan
CC=golang-dev
https://golang.org/cl/7312093
2013-02-18 14:40:47 -08:00
Russ Cox
86d509b463 runtime: preparation for non-Go threads running Go code
* Handle p==nil in signalstack by setting SS_DISABLE flag.
* Make minit only allocate a signal g if there's not one already.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/7323072
2013-02-18 13:43:12 -05:00
Russ Cox
07e87885ad cmd/6c: fix build
copy+paste error while cleaning up CL 7303099 before submit

R=ken2
CC=golang-dev
https://golang.org/cl/7308104
2013-02-18 13:29:55 -05:00
Russ Cox
139448fe95 cmd/6c, cmd/8c: cut stack frames by about half
The routine that adds an automatic to the stack was
adding ptrsize-1 to the size before rounding up.
That addition would only make sense to turn a round down
into a round up. Before a round up, it just wastes a word.

The effect was that a 6c function with one local and
one two-word function call used (8+8)+(16+8) = 40 bytes
instead of 8+16 = 24 bytes.

The wasted space mostly didn't matter, but one place where
it does matter is when trying to stay within the 128-byte
total frame constraint for #pragma textflag 7 functions.

This only affects the C compilers, not the Go compilers.

5c already had correct code, which is now copied to 6c and 8c.

R=ken2
CC=golang-dev
https://golang.org/cl/7303099
2013-02-18 13:24:04 -05:00
Dmitriy Vyukov
d62239b5f6 runtime/debug: make TestFreeOSMemory repeatable
Fixes #4835.

R=golang-dev, fullung
CC=golang-dev
https://golang.org/cl/7319050
2013-02-18 15:46:36 +04:00
David Symonds
8ecc4cb41e misc/vim: update installation instructions to work better with some Linux distributions.
Fixes #3308.

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/7301086
2013-02-18 14:03:47 +11:00
Volker Dobler
6bbd12f176 exp/cookiejar: make cookie sorting deterministic.
Re-enable TestUpdateAndDelete, TestExpiration, TestChromiumDomain and
TestChromiumDeletion on Windows.

Sorting of cookies with same path length and same creation
time is done by an additional seqNum field.
This makes the order in which cookies are returned in Cookies
deterministic, even if the system clock is manipulated or on
systems with a low-resolution clock.

The tests now use a synthetic time: This makes cookie testing
reliable in case of bogus system clocks and speeds up the
expiration tests.

R=nigeltao, alex.brainman, dave
CC=golang-dev
https://golang.org/cl/7323063
2013-02-18 11:27:41 +11:00
Joel Sing
556dd0bfbd runtime: fix sigaction struct on freebsd
Fix the sa_mask member of the sigaction struct - on FreeBSD this is
declared as a sigset_t, which is an array of four unsigned ints.
Replace the current int64 with Sigset from defs_freebsd_GOARCH, which
has the correct definition.

Unbreaks the FreeBSD builds.

R=golang-dev, dave, minux.ma
CC=golang-dev
https://golang.org/cl/7333047
2013-02-18 03:23:29 +11:00
Rémy Oudompheng
23093f86ee strings: better mean complexity for Count and Index.
The O(n+m) complexity is obtained probabilistically
by using Rabin-Karp algorithm, which provides the needed complexity
unless exceptional collisions occur, without memory allocation.

benchmark                 old ns/op    new ns/op    delta
BenchmarkIndexHard1         6532331      4045886  -38.06%
BenchmarkIndexHard2         8178173      4038975  -50.61%
BenchmarkIndexHard3         6973687      4042591  -42.03%
BenchmarkCountHard1         6270864      4071090  -35.08%
BenchmarkCountHard2         7838039      4072853  -48.04%
BenchmarkCountHard3         6697828      4071964  -39.20%
BenchmarkIndexTorture       2730546        28934  -98.94%
BenchmarkCountTorture       2729622        29064  -98.94%

Fixes #4600.

R=rsc, donovanhide, remyoudompheng
CC=golang-dev
https://golang.org/cl/7314095
2013-02-17 13:07:17 +01:00
Georg Reinke
f1037f0e86 runtime: fix build on openbsd
R=golang-dev, jsing
CC=golang-dev
https://golang.org/cl/7312104
2013-02-17 02:06:59 +11:00
Mikio Hara
c02d18ab34 net: add IPConn through Conn test
Also refactors mock ICMP stuff.

R=dave, rsc
CC=golang-dev
https://golang.org/cl/7325043
2013-02-16 12:55:39 +09:00
Dave Cheney
21327e1970 runtime: fix unused variable warning
R=rsc, dvyukov
CC=golang-dev
https://golang.org/cl/7312103
2013-02-16 14:32:04 +11:00
Russ Cox
60526ca6d1 undo CL 7310096 / 59da6744d66d
broke windows build

««« original CL description
runtime: ensure forward progress of runtime.Gosched() for locked goroutines
The removed code leads to the situation when M executes the same locked G again and again.
Fixes #4820.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7310096
»»»

TBR=dvyukov
CC=golang-dev
https://golang.org/cl/7343050
2013-02-15 17:54:46 -05:00
Russ Cox
c92d3552e5 os: point users of ProcessState.SysUsage to getrusage(2)
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7352044
2013-02-15 17:11:13 -05:00
Russ Cox
6d888f1e1b build: clang support
This works with at least one version of clang
that existed at one moment in time.
No guarantees about clangs past or future.

To try:
        CC=clang all.bash

It does not work with the Xcode clang,
because that clang fails at printing a useful answer
to:
        clang -print-libgcc-file-name
The clang that works prints a full path name for
that command, not just "libgcc.a".

Fixes #4713.

R=iant, minux.ma
CC=golang-dev
https://golang.org/cl/7323068
2013-02-15 13:37:43 -08:00
Russ Cox
428c4cc8d4 api: refresh next.txt
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7317049
2013-02-15 16:33:14 -05:00
Russ Cox
0c3b17a55a runtime: allow mem profiles with GOGC=off
Fixes #3586.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/7304098
2013-02-15 14:48:58 -05:00
Russ Cox
6c1539bb01 runtime: show frame pointer values during throw
Should help if stack overflows start happening again.

Fixes #3582.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/7311098
2013-02-15 14:48:47 -05:00