This is the Replace I suggested in the review of CL 1114041.
It's true that we already have
regexp.MustCompile(regexp.QuoteMeta(old)).ReplaceAll(s, new)
but because this Replace is doing a simpler job it is
simpler to call and inherently more efficient.
I will add the bytes implementation and tests to the
CL after the strings one has been reviewed.
R=r, cw
CC=golang-dev
https://golang.org/cl/1731048
For generating non-self-signed certs we need to be able to specify a
public key (for the signee) which is different from the private key (of
the signer).
R=rsc
CC=golang-dev
https://golang.org/cl/1741045
One goroutine started up and was waiting in rw. Then another
goroutine decided to close the pipe. The closing goroutine
stalled calling p.io.Lock() in pipeHalf.close. (This happened
in gccgo). If the closing goroutine had been able to set the
ioclosed flag, it would have gone on to tell the runner that
the pipe was closed, which would then send an EINVAL to the
goroutine sleeping in rw. Unlocking p.io before sleeping in
rw avoids the race.
R=rsc, rsc1
CC=golang-dev
https://golang.org/cl/1682048
Revision: 5885c9d10f created syscall_bsd.go for code used
by Darwin and other *BSDs, which should have included
FreeBSD. mksyscall.sh to generate new zsyscall_freebsd_386.go.
Fixes#862.
R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/1701048
Ping IDs should be limited to 16-bits. Fix failure printing.
R=rsc
CC=golang-dev, jean-christophe smith <jeanchristophe.smith
https://golang.org/cl/1682043
Currently to install a command, you have to manually
goinstall each of the remote packages that it depends on.
This patch lets goinstall P work where P is
contains files in package main.
It does not actually build the package, but
it installs all of its dependencies and prints a message
to that effect.
R=rsc
CC=golang-dev
https://golang.org/cl/1301043
x.go:13: cannot use t (type T) as type Reader in assignment:
T does not implement Reader (Read method requires pointer receiver)
x.go:19: cannot use q (type Q) as type Reader in assignment:
Q does not implement Reader (missing Read method)
have read()
want Read()
x.go:22: cannot use z (type int) as type Reader in assignment:
int does not implement Reader (missing Read method)
x.go:24: too many arguments to conversion to complex: complex(1, 3)
R=ken2
CC=golang-dev
https://golang.org/cl/1736041
This CL replaces my earlier https://golang.org/cl/1640044/show
in which Continue handling was explicit. Instead, this CL makes
it automatic. Reading from Body() is an implicit acknowledgement
that the request headers were fine and the body is wanted. In that
case, the 100 Continue response is written automatically when the
request continues the "Expect: 100-continue" header.
R=rsc, adg
CC=golang-dev
https://golang.org/cl/1610042
While we're at it, clean up and test the code to guarantee we see every byte when
the text is erroneous UTF-8.
Fixes#866.
R=rsc
CC=golang-dev
https://golang.org/cl/1712042
This shortens, simplifies and regularizes the code significantly.
(Improvements to reflect could make another step.)
Passes all.bash.
One semantic change occurs: The String() method changes
behavior. It used to run only for string formats such as %s and %q.
Instead, it now runs whenever the item has the method and the
result is then processed by the format as a string. Besides the
regularization, this has three effects:
1) width is honored for String() items
2) %x works for String() items
3) implementations of String that merely recur will recur forever
Regarding point 3, example from the updated documentation:
type X int
func (x X) String() string { return Sprintf("%d", x) }
should cast the value before recurring:
func (x X) String() string { return Sprintf("%d", int(x)) }
R=rsc
CC=golang-dev
https://golang.org/cl/1613045
Change TrimRight and TrimLeft to use these functions.
Incidentally fix minor bug in TrimRight.
Add some test cases for this.
YMMV whether it's worth saving the closure allocation.
R=r, r2
CC=golang-dev, hoisie, rsc
https://golang.org/cl/1198044
Cannot assume that g == m->curg at time of signal.
Must save actual g and restore.
Fixes flaky crashes with messages like
throw: malloc mlookup
throw: malloc/free - deadlock
throw: unwindstack on self
throw: free mlookup
(and probably others) when running cgo.
R=iant
CC=golang-dev
https://golang.org/cl/1648043
There's only one Go object file per package now,
so there's no need to parse the metadata and merge
metadata from multiple files. Just save the original
and use it as __.PKGDEF verbatim.
R=r
CC=golang-dev
https://golang.org/cl/1647042
This avoids a crash when using cgo where glibc's malloc thinks
that it can use some of the memory following the symbol table.
This fails because the symbol table is mapped read-only, which
affects the whole page.
R=rsc
CC=golang-dev
https://golang.org/cl/1616042
Although technically incorrect, we want this in order to parse X.509
certificates where a wildcard hostname ("*.example.com") has been put
into a PrintableString.
Fixes#850.
R=rsc
CC=golang-dev
https://golang.org/cl/1615043
* Code for assignment, conversions now mirrors spec.
* Changed some snprint -> smprint.
* Renamed runtime functions to separate
interface conversions from type assertions:
convT2I, assertI2T, etc.
* Correct checking of \U sequences.
Fixes#840.
Fixes#830.
Fixes#778.
R=ken2
CC=golang-dev
https://golang.org/cl/1303042
(caused certain files to not be idempotent under gofmt)
- corrected golden files for go/printer
- slightly simplified some code in nodes.go (no impact on formatting)
- these changes have no impact on gofmt output of .go files under src, misc
fallthrough statement considered harmful!
R=rsc
CC=golang-dev
https://golang.org/cl/1593042
Time (us) to draw a 200x200 src onto an image.RGBA dst with the Over
operator. Each case was measured three separate times, and the sorted
times are reported.
Fill case (where src is an image.ColorImage):
Before:
7438, 7511, 7526
After:
3073, 3087, 3102
Copy case (where src is an image.RGBA):
Before:
9506, 9510, 9563
After:
5262, 5300, 5344
R=rsc
CC=golang-dev
https://golang.org/cl/1532041
Also fix an interface bug: white-space-delimited doesn't work well for cases like "%d, %d" on "23, 23")
R=rsc
CC=golang-dev
https://golang.org/cl/1502041
charclass to avoid unnecessarily iterating over ranges.
Also, use the fact that IntVector is an []int to avoid method calls.
On my machine, this brings us from ~27500 ns/op to ~17500 ns/op in the benchmark I've added (it is also faster in the case where a range check
doesn't help, added a benchmark for this too.)
I'd also like to propose that "[]", and "[^]" be disallowed. They aren't useful as far as I can tell, they aren't widely supported, and they make reasoning about character classes a bit more complicated.
R=r
CC=golang-dev
https://golang.org/cl/1495041
On error, ReadSlice is defined to return the available data
and advance past that data, but it was not behaving that
way for err == ErrBufferFull, making it harder for callers to
handle well.
R=r
CC=golang-dev
https://golang.org/cl/1480041
- implement scanning for all renamed types
(compiler bug stops complex from being renamable,
so it can't be tested but the code is there)
- %q %x for strings
- error handling now done with panic/recover
R=rsc
CC=golang-dev
https://golang.org/cl/1458041
- implement scanning for all renamed types
(compiler bug stops complex from being renamable,
so it can't be tested but the code is there)
- %q %x for strings
- error handling now done with panic/recover
R=rsc
CC=golang-dev
https://golang.org/cl/1458041
For example, earlier, the regexp would accept SIGQUEUE_MAX
as a unix signal with name SIGQUEUE. Now it is ignored.
R=iant
CC=golang-dev, golang-nuts, joel.sherrill
https://golang.org/cl/1452041
Also, move Do() to vector.go, so that Do() for IntVector and StringVector
is autogenerated.
The only files edited are Makefile, defs.go, and vector.go. The rest are
autogenerated with "make generate".
R=r
CC=golang-dev, hoisie
https://golang.org/cl/1435041
- reimplement integer scanning to handle renamed basic integer types
- start implementation of Fscanf and Scanf; not yet ready for general use.
This intermediate CL is a useful checkpoint. A similar change needs to be
done for float and complex, but it seemed worth getting the approach
reviewed before making those changes.
R=rsc
CC=golang-dev
https://golang.org/cl/1418041
It turns out that _cgo_malloc is used, via cmalloc in
runtime/cgocall.c, which is called by code generated by out.go
for the ·_C_CString function. I can't find a call to
_cgo_free, but given _cgo_malloc we might as well keep
_cgo_free. This patch fixes it so that it should work on
amd64.
R=rsc
CC=golang-dev
https://golang.org/cl/1399041
Fix Rectangle.Clip.
It could return a non-canonical rectangle if its arguments
did not overlap.
e.g. Rect(0, 0, 10, 10).Clip(Rect(0, 20, 10, 30)) -> Rect(0, 20, 10, 10)
R=rsc, r
CC=golang-dev, golang-dev
https://golang.org/cl/1290041
ModInverse is just a small wrapper around GcdInt, but it's nice to
have in order to be clear about what one is doing in other code.
R=gri, agl1
CC=golang-dev
https://golang.org/cl/1244045
Still to do:
- composite types
- user-defined scanners
- format-driven scanning
The package comment will be updated when more of the functionality is in place.
R=rsc
CC=golang-dev
https://golang.org/cl/1252045
On my laptop, time to prepare and write 800x600 pixels over the
socket falls from 125-ish ms to 80-ish ms.
Thanks to Roger Peppe for the suggestion.
R=r
CC=golang-dev
https://golang.org/cl/1228044
cannot allocate an audomatic temp
while real registers are allocated.
there is a chance that the automatic
will be allocated to one of the
allocated registers. the fix is to
not registerize such variables.
R=rsc
CC=golang-dev
https://golang.org/cl/1202042
Time to draw.Draw a 200x200 image fell from 18.4ms (and 1 malloc) to
5.6ms (and 0 mallocs). It's still relatively slow since it assumes
nothing about the src or mask images, but it does remove the malloc.
There are existing faster, more specialized paths for copies, fills
and image glyph masks.
Also added a "compare to a slow but obviously correct implementation"
check to draw_test.go.
R=rsc, r
CC=golang-dev
https://golang.org/cl/1223044
- implemented setWord, use it where setUint64 is wrong
- divLarge: use fast mulWW, divWW; implemented mulWW, divWW
- better assembly code for addMulVVW
R=rsc
CC=golang-dev
https://golang.org/cl/1258042
Previously the compiler would just emit "internal compiler error" when
trying to compute the remainder of floats or complex types.
R=rsc
CC=golang-dev
https://golang.org/cl/1243041
- support for binary prefix 0b (to match fmt.Format)
- renamed nat.new -> nat.setUint64 for consistency
- more tests
R=r
CC=golang-dev
https://golang.org/cl/1233041
Also update range of Phase and Polar due to signed zero.
[Phase(cmplx(-1, +0)) = pi and Phase(cmplx(-1, -0)) = -pi]
R=rsc, r
CC=golang-dev
https://golang.org/cl/1235041
Timings (as for change 1122043) go from 49ms to 48ms ish. It's
mostly lost in the noise, but it probably doesn't hurt.
R=r
CC=golang-dev
https://golang.org/cl/1179041
To draw.Draw a 32x32 image.Alpha 10000 times,
Before: 633ms with 10000 mallocs
After: 49ms with 0 mallocs
These times are just blitting an image.Alpha, and do not include
rasterizing a glyph's vector contours to an image.Alpha.
The "generic" test case in draw_test.go tests this fast path.
R=rsc
CC=golang-dev
https://golang.org/cl/1122043
- removed last argument (n) from all core arithmetic routines;
instead, use the length of the result
- simplified nat.make implementation and chose a better capacity
for new values, removed a TODO in the process
Changing the constant e from 1 (old) to 4 (new) improved
pidigits -s -n 10000 by ~9% (on a 3.06GHz Intel Core 2 Duo):
user 0m3.882s (old)
user 0m3.549s (new)
R=rsc
CC=golang-dev
https://golang.org/cl/1133043
This permits cgo callbacks to work when run in init code.
Otherwise cgocallback switches to the wrong stack address.
R=rsc
CC=golang-dev
https://golang.org/cl/1123043
- no need to make copies in cases of aliases
- removed deprecated internal shift functions
- minor unrelated simplifications
This change improves pidigits -s -n10000 by almost 20%:
user 0m6.156s (old)
user 0m4.999s (new)
(pidigits -s -n20000 goes from ~25s to ~19s)
R=rsc
CC=golang-dev
https://golang.org/cl/1149041
Because maps are mostly a hidden type, they must be
implemented using reflection values and will not be as
efficient as arrays and slices.
R=rsc
CC=golang-dev
https://golang.org/cl/1127041
- renamed Len -> BitLen, simplified implementation
- renamed old Div, Mod, DivMod -> Que, Rem, QuoRem
- implemented Div, Mod, DivMod (Euclidian definition, more
useful in a mathematical context)
- fixed a bug in Exp (-0 was possible)
- added extra tests to check normalized results everywhere
- uniformly set Int.neg flag at the end of computations
- minor cosmetic cleanups
- ran all tests
R=rsc
CC=golang-dev
https://golang.org/cl/1091041
Import _mulv from Inferno again, change R9 to R2.
Not sure what the other differences were for, but
they weren't working.
TBR=kaib
CC=golang-dev
https://golang.org/cl/1079041
built. Note that they are only built if a //export comment
appears, so other targets should only use them if there is
such a comment.
Fixes#723.
R=rsc
CC=golang-dev
https://golang.org/cl/1073041
When trying to regenerate src/pkg/runtime/darwin/386/defs.h
on a 64 bit capable Snow Leopard (OS X 10.6.3) system I
needed to add -f -m32 to godefs, as this OS and hardware
combination defaults to 64 bit compilation.
For safety, make the same change to the 32 bit FreeBSD
instructions in .../freebsd/defs.c. (Tested OK and no
problems introduced.)
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/1052042
- fixed a couple of bugs in the process
(shift right was incorrect for negative numbers)
- added more tests and made some tests more robust
- changed pidigits back to using shifts to multiply
by 2 instead of add
This improves pidigit -s -n 10000 by approx. 5%:
user 0m6.496s (old)
user 0m6.156s (new)
R=rsc
CC=golang-dev
https://golang.org/cl/963044
This results in an improvement of > 35% for the existing Mul benchmark
using the same karatsuba threshold, and an improvement of > 50% with
a slightly higher threshold (32 instead of 30):
big.BenchmarkMul 500 6731846 ns/op (old alg.)
big.BenchmarkMul 500 4351122 ns/op (new alg.)
big.BenchmarkMul 500 3133782 ns/op (new alg., new theshold)
Also:
- tweaked calibrate.go, use same benchmark as for Mul benchmark
R=rsc
CC=golang-dev
https://golang.org/cl/1037041
Plus:
- calibration "test" - include in tests with gotest -calibrate
- basic Mul benchmark
- extra multiplication tests
- various cleanups
This change improves multiplication speed of numbers >= 30 words
in length (current threshold; found empirically with calibrate):
The multiplication benchmark (multiplication of a variety of long numbers)
improves by ~35%, individual multiplies can be significantly faster.
gotest -benchmarks=Mul
big.BenchmarkMul 500 6829290 ns/op (w/ Karatsuba)
big.BenchmarkMul 100 10600760 ns/op
There's no impact on pidigits for -n=10000 or -n=20000
because the operands are are too small.
R=rsc
CC=golang-dev
https://golang.org/cl/1004042
Rather than confuse people by linking to a spec we
don't fully support, let them just use the package docs.
R=r, rsc
CC=golang-dev
https://golang.org/cl/1016041
This matches the old JSON package behavior.
All lowercase names are not as standard as I believed,
and it seems less surprising to need to write
type T struct { Field string "field" }
to get lower case (behavior after this CL) than it does to need
to write
type T struct { Field string "Field" }
to preserve the case (behavior before this CL).
Also test and fix unmarshal into non-nil interface
value or pointer.
Fixes#744.
R=r
CC=golang-dev
https://golang.org/cl/1013041
