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Commit Graph

56832 Commits

Author SHA1 Message Date
Filippo Valsorda
b267db08b2 crypto/tls: add VersionName
Fixes #46308

Change-Id: I5162b26cbce61ae5df5d2e093cf8a28406d15863
Reviewed-on: https://go-review.googlesource.com/c/go/+/497377
Auto-Submit: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Marten Seemann <martenseemann@gmail.com>
Reviewed-by: Roland Shoemaker <roland@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Samuli Silvius <samuli.silvius@gmail.com>
Reviewed-by: Damien Neil <dneil@google.com>
Run-TryBot: Filippo Valsorda <filippo@golang.org>
2023-05-25 00:13:32 +00:00
Filippo Valsorda
4406ed6d4e crypto/tls: implement Extended Master Secret
All OpenSSL tests now test operation with EMS. To test a handshake
*without* EMS we need to pass -Options=-ExtendedMasterSecret which is
only available in OpenSSL 3.1, which breaks a number of other tests.

Updates #43922

Change-Id: Ib9ac79a1d03fab6bfba5fe9cd66689cff661cda7
Reviewed-on: https://go-review.googlesource.com/c/go/+/497376
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Roland Shoemaker <roland@golang.org>
Auto-Submit: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
2023-05-25 00:13:30 +00:00
Filippo Valsorda
869da4a2a4 crypto/tls: add QUIC 0-RTT APIs
Fixes #60107

Change-Id: I158b1c2d80d8ebb5ed7a8e6f313f69060754e220
Reviewed-on: https://go-review.googlesource.com/c/go/+/496995
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Roland Shoemaker <roland@golang.org>
Run-TryBot: Filippo Valsorda <filippo@golang.org>
Auto-Submit: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-05-25 00:13:28 +00:00
Chris O'Hara
a17de43ef1 net: implement wasip1 FileListener and FileConn
Implements net.FileListener and net.FileConn for wasip1.

net.FileListener can be used with a pre-opened socket. If the WASM
module knows the file descriptor, a listener can be constructed with:

    l, err := net.FileListener(os.NewFile(fd, ""))

If the WASM module does not know the file descriptor, but knows that at
least one of the preopens is a socket, it can find the file descriptor
and construct a listener like so:

    func findListener() (net.Listener, error) {
        // We start looking for pre-opened sockets at fd=3 because 0, 1,
        // and 2 are reserved for stdio. Pre-opened directories also
        // start at fd=3, so we skip fds that aren't sockets. Once we
        // reach EBADF we know there are no more pre-opens.
        for preopenFd := uintptr(3); ; preopenFd++ {
            l, err := net.FileListener(os.NewFile(preopenFd, ""))

            var se syscall.Errno
            switch errors.As(err, &se); se {
            case syscall.ENOTSOCK:
                continue
            case syscall.EBADF:
                err = nil
            }
            return l, err
        }
    }

A similar strategy can be used with net.FileConn and pre-opened
connection sockets.

The wasmtime runtime supports pre-opening listener sockets:

    $ wasmtime --tcplisten 127.0.0.1:8080 module.wasm

Change-Id: Iec6ae4ffa84b3753cce4f56a2817e150445db643
Reviewed-on: https://go-review.googlesource.com/c/go/+/493358
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Bypass: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
Auto-Submit: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
2023-05-25 00:12:41 +00:00
Chris O'Hara
c5c2184538 runtime: implement wasip1 netpoll
Implements netpoll using WASI's poll_oneoff system call.

This enables non-blocking I/O support for wasip1.

Change-Id: Ie395fa49d651c8b8262d485e2847dd65b0a10bc6
Reviewed-on: https://go-review.googlesource.com/c/go/+/493357
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
Reviewed-by: Julien Fabre <ju.pryz@gmail.com>
Auto-Submit: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
2023-05-25 00:12:40 +00:00
Sean Liao
04c628935d encoding/json: document unsupported float values
Fixes #59627

Change-Id: Icd6a9803e213596de6136ec980b0a352c450e6f7
Reviewed-on: https://go-review.googlesource.com/c/go/+/496142
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2023-05-25 00:04:56 +00:00
Filippo Valsorda
2a4f4fc525 crypto/tls: add SessionState.Extra
This can be used by applications to store additional data in a session.

Fixes #57753
For #60105

Change-Id: Ib42387ad64750fa8dbbdf51de5e9c86378bef0ee
Reviewed-on: https://go-review.googlesource.com/c/go/+/496822
Run-TryBot: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Marten Seemann <martenseemann@gmail.com>
Reviewed-by: Damien Neil <dneil@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2023-05-24 23:57:01 +00:00
Filippo Valsorda
6824765b4b crypto/tls: add WrapSession and UnwrapSession
There was a bug in TestResumption: the first ExpiredSessionTicket was
inserting a ticket far in the future, so the second ExpiredSessionTicket
wasn't actually supposed to fail. However, there was a bug in
checkForResumption->sendSessionTicket, too: if a session was not resumed
because it was too old, its createdAt was still persisted in the next
ticket. The two bugs used to cancel each other out.

For #60105
Fixes #19199

Change-Id: Ic9b2aab943dcbf0de62b8758a6195319dc286e2f
Reviewed-on: https://go-review.googlesource.com/c/go/+/496821
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Roland Shoemaker <roland@golang.org>
Reviewed-by: Damien Neil <dneil@google.com>
2023-05-24 23:56:55 +00:00
Filippo Valsorda
371ebe731b crypto/tls: add ClientSessionState.ResumptionState and NewResumptionState
For #60105
Fixes #25351

Change-Id: Iffd658f2663cfc47b48157824226ed6c0260a59e
Reviewed-on: https://go-review.googlesource.com/c/go/+/496820
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Marten Seemann <martenseemann@gmail.com>
2023-05-24 23:56:48 +00:00
Filippo Valsorda
6d05bc7816 crypto/tls: use SessionState on the client side
Another internal change, that allows exposing the new APIs easily in
following CLs.

For #60105

Change-Id: I9c61b9f6e9d29af633f952444f514bcbbe82fe4e
Reviewed-on: https://go-review.googlesource.com/c/go/+/496819
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Damien Neil <dneil@google.com>
Run-TryBot: Filippo Valsorda <filippo@golang.org>
2023-05-24 23:56:41 +00:00
Filippo Valsorda
9624e67fd2 crypto/tls: add SessionState and use it on the server side
This change by itself is useless, because the application has no way to
access or provide SessionStates to crypto/tls, but they will be provided
in following CLs.

For #60105

Change-Id: I8d5de79b1eda0a778420134cf6f346246a1bb296
Reviewed-on: https://go-review.googlesource.com/c/go/+/496818
Reviewed-by: Marten Seemann <martenseemann@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Filippo Valsorda <filippo@golang.org>
2023-05-24 23:56:32 +00:00
Filippo Valsorda
6b020be648 crypto/tls: reduce session ticket linkability
Ever since session ticket key rotation was introduced in CL 9072, we've
been including a prefix in every ticket to identify what key it's
encrypted with. It's a small privacy gain, but the cost of trial
decryptions is also small, especially since the first key is probably
the most frequently used.

Also reissue tickets on every resumption so that the next connection
can't be linked to all the previous ones. Again the privacy gain is
small but the performance cost is small and it comes with a reduction in
complexity.

For #60105

Change-Id: I852f297162d2b79a3d9bf61f6171e8ce94b2537a
Reviewed-on: https://go-review.googlesource.com/c/go/+/496817
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Damien Neil <dneil@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-05-24 23:56:24 +00:00
Maksim Meshkov
08458804fb compress/flate, archive/zip: reduce memory allocations
The existing implementation allocates a new 4KB buffer each time it opens flate-encoded file in a zip archive. This commit allows the flate reader to reuse the buffer on call Reset instead of allocating a new one.

It is noticeable when a zip archive contains a huge amount of files, e.g. zip archive has 50_000 files, for each file 4KB buffer is allocated, so it is 200MB memory allocations. If files are read sequentially only one buffer is needed.

Fixes #59774

Change-Id: Ib16336b101ba58e8f0f30a45dc5fd4eeebc801a1
GitHub-Last-Rev: f3f395b2ad
GitHub-Pull-Request: golang/go#59775
Reviewed-on: https://go-review.googlesource.com/c/go/+/487675
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2023-05-24 23:23:54 +00:00
Alan Donovan
a965318ac0 go/types: set correct Pos for T in struct{p.T}
Previously, the field Var for T created for struct{p.T}
would use the Pos of the ast.Field, which coincides with p.
This change makes it use the Pos of T.

Errors about the field type are still reported at the
position of the ast.Field (e.g. *p.T) not the field T.

Fixes #60372

Change-Id: I06000874f2018d47159493626da3d16e6716f4c8
Reviewed-on: https://go-review.googlesource.com/c/go/+/497882
Reviewed-by: Robert Findley <rfindley@google.com>
Auto-Submit: Alan Donovan <adonovan@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@google.com>
Run-TryBot: Alan Donovan <adonovan@google.com>
2023-05-24 23:16:04 +00:00
Jakub Ciolek
326df693d7 cmd/compile: Use XORL and X15 for zeroing in ggen's zerorange on AMD64
Prefer a SSE store from X15 over XORL REG REG -> MOVQ.

Use XORL REG, REG to setup 0 for REP STOS.

Remove the nacl related block.

Intel Alder Lake 12600k (Linux):

name                      old time/op    new time/op    delta
BinaryTree17-16              1.52s ± 1%     1.52s ± 1%    ~
(p=0.932 n=12+12)
Fannkuch11-16                1.40s ± 0%     1.46s ± 0%  +4.12%
(p=0.000 n=12+11)
FmtFprintfEmpty-16          13.0ns ± 1%    13.2ns ± 1%  +1.37%
(p=0.000 n=11+12)
FmtFprintfString-16         24.0ns ± 1%    23.2ns ± 1%  -3.53%
(p=0.000 n=12+11)
FmtFprintfInt-16            27.6ns ± 1%    25.5ns ± 1%  -7.53%
(p=0.000 n=12+12)
FmtFprintfIntInt-16         43.1ns ± 1%    41.4ns ± 1%  -4.00%
(p=0.000 n=12+12)
FmtFprintfPrefixedInt-16    56.8ns ± 0%    54.8ns ± 1%  -3.49%
(p=0.000 n=11+12)
FmtFprintfFloat-16          59.0ns ± 0%    59.7ns ± 1%  +1.11%
(p=0.000 n=12+12)
FmtManyArgs-16               159ns ± 1%     160ns ± 1%    ~
(p=0.070 n=12+12)
GobDecode-16                2.37ms ± 2%    2.39ms ± 1%    ~
(p=0.059 n=12+11)
GobEncode-16                1.99ms ± 2%    2.00ms ± 2%    ~
(p=0.291 n=12+12)
Gzip-16                     98.7ms ± 1%    99.2ms ± 0%  +0.51%
(p=0.024 n=12+12)
Gunzip-16                   13.4ms ± 0%    13.5ms ± 0%  +0.20%
(p=0.001 n=11+12)
HTTPClientServer-16         27.0µs ± 6%    26.5µs ± 4%    ~
(p=0.266 n=12+12)
JSONEncode-16               3.41ms ± 5%    3.44ms ± 2%    ~
(p=0.291 n=12+12)
JSONDecode-16               16.6ms ± 1%    16.6ms ± 2%    ~
(p=0.872 n=10+12)
Mandelbrot200-16            1.78ms ± 0%    1.78ms ± 0%    ~
(p=0.514 n=12+12)
GoParse-16                  1.59ms ± 2%    1.57ms ± 2%  -0.82%
(p=0.016 n=12+11)
RegexpMatchEasy0_32-16      21.5ns ± 1%    21.3ns ± 0%  -1.10%
(p=0.000 n=12+12)
RegexpMatchEasy0_1K-16      71.0ns ± 0%    69.9ns ± 0%  -1.58%
(p=0.000 n=11+11)
RegexpMatchEasy1_32-16      18.0ns ± 1%    17.3ns ± 0%  -3.38%
(p=0.000 n=12+12)
RegexpMatchEasy1_1K-16      97.8ns ± 0%    97.2ns ± 1%  -0.56%
(p=0.001 n=10+10)
RegexpMatchMedium_32-16      269ns ± 0%     270ns ± 2%    ~
(p=0.241 n=11+12)
RegexpMatchMedium_1K-16     11.4µs ± 0%    11.3µs ± 1%  -0.69%
(p=0.000 n=11+12)
RegexpMatchHard_32-16        522ns ± 0%     522ns ± 1%    ~
(p=0.811 n=12+12)
RegexpMatchHard_1K-16       15.1µs ± 2%    14.8µs ± 0%  -2.17%
(p=0.000 n=12+12)
Revcomp-16                   194ms ± 1%     195ms ± 2%    ~
(p=0.059 n=11+12)
Template-16                 22.0ms ± 2%    21.5ms ± 2%  -2.11%
(p=0.001 n=12+12)
TimeParse-16                97.3ns ± 1%    97.2ns ± 0%    ~
(p=0.217 n=11+12)
TimeFormat-16               98.2ns ± 2%    97.1ns ± 2%    ~
(p=0.101 n=12+12)
[Geo mean]                  17.7µs         17.6µs       -0.77%

name                      old speed      new speed      delta
GobDecode-16               324MB/s ± 2%   322MB/s ± 1%    ~
(p=0.058 n=12+11)
GobEncode-16               385MB/s ± 2%   383MB/s ± 2%    ~
(p=0.291 n=12+12)
Gzip-16                    197MB/s ± 1%   196MB/s ± 0%  -0.51%
(p=0.023 n=12+12)
Gunzip-16                 1.44GB/s ± 0%  1.44GB/s ± 0%  -0.20%
(p=0.001 n=11+12)
JSONEncode-16              570MB/s ± 5%   565MB/s ± 2%    ~
(p=0.291 n=12+12)
JSONDecode-16              117MB/s ± 1%   117MB/s ± 2%    ~
(p=0.885 n=10+12)
GoParse-16                36.5MB/s ± 2%  36.8MB/s ± 2%  +0.83%
(p=0.018 n=12+11)
RegexpMatchEasy0_32-16    1.49GB/s ± 1%  1.50GB/s ± 0%  +1.12%
(p=0.000 n=12+12)
RegexpMatchEasy0_1K-16    14.4GB/s ± 0%  14.6GB/s ± 0%  +1.61%
(p=0.000 n=11+11)
RegexpMatchEasy1_32-16    1.78GB/s ± 1%  1.84GB/s ± 0%  +3.50%
(p=0.000 n=12+12)
RegexpMatchEasy1_1K-16    10.5GB/s ± 0%  10.5GB/s ± 1%  +0.57%
(p=0.001 n=10+10)
RegexpMatchMedium_32-16    119MB/s ± 0%   119MB/s ± 2%    ~
(p=0.235 n=11+12)
RegexpMatchMedium_1K-16   90.1MB/s ± 0%  90.8MB/s ± 1%  +0.69%
(p=0.000 n=11+12)
RegexpMatchHard_32-16     61.3MB/s ± 0%  61.3MB/s ± 1%    ~
(p=0.765 n=12+12)
RegexpMatchHard_1K-16     67.6MB/s ± 2%  69.1MB/s ± 0%  +2.20%
(p=0.000 n=12+12)
Revcomp-16                1.31GB/s ± 1%  1.30GB/s ± 2%    ~
(p=0.059 n=11+12)
Template-16               88.3MB/s ± 2%  90.2MB/s ± 2%  +2.16%
(p=0.001 n=12+12)
[Geo mean]                 401MB/s        403MB/s       +0.49%

file                                                        before   after    Δ       %
runtime.s                                                   512467   512447   -20     -0.004%
sync.s                                                      16219    16197    -22     -0.136%
internal/singleflight.s                                     2617     2616     -1      -0.038%
internal/testlog.s                                          2157     2152     -5      -0.232%
io.s                                                        18992    18980    -12     -0.063%
text/tabwriter.s                                            8952     8913     -39     -0.436%
syscall.s                                                   85241    85220    -21     -0.025%
go/build/constraint.s                                       12763    12741    -22     -0.172%
time.s                                                      100682   100672   -10     -0.010%
context.s                                                   12316    12305    -11     -0.089%
internal/poll.s                                             45297    45114    -183    -0.404%
io/fs.s                                                     16767    16763    -4      -0.024%
crypto/hmac.s                                               2546     2537     -9      -0.353%
os.s                                                        53983    53964    -19     -0.035%
os/exec.s                                                   25723    25710    -13     -0.051%
os/user.s                                                   12166    12133    -33     -0.271%
debug/gosym.s                                               36980    36948    -32     -0.087%
database/sql.s                                              90990    90863    -127    -0.140%
archive/zip.s                                               52485    52481    -4      -0.008%
debug/dwarf.s                                               117251   117219   -32     -0.027%
encoding/json.s                                             95637    95579    -58     -0.061%
net.s                                                       278084   278056   -28     -0.010%
log.s                                                       12153    12121    -32     -0.263%
vendor/golang.org/x/net/http2/hpack.s                       22562    22552    -10     -0.044%
mime.s                                                      32872    32851    -21     -0.064%
vendor/golang.org/x/crypto/cryptobyte.s                     32035    32024    -11     -0.034%
go/token.s                                                  13689    13645    -44     -0.321%
image/gif.s                                                 22700    22668    -32     -0.141%
text/template/parse.s                                       81696    81683    -13     -0.016%
image/png.s                                                 37704    37692    -12     -0.032%
go/ast.s                                                    63753    63751    -2      -0.003%
internal/dag.s                                              13123    13122    -1      -0.008%
crypto/x509.s                                               137641   137635   -6      -0.004%
text/template.s                                             106615   106592   -23     -0.022%
os/signal.s                                                 7658     7651     -7      -0.091%
go/printer.s                                                90393    90384    -9      -0.010%
runtime/trace.s                                             2844     2819     -25     -0.879%
go/parser.s                                                 111432   111144   -288    -0.258%
html/template.s                                             91633    91619    -14     -0.015%
log/syslog.s                                                6612     6593     -19     -0.287%
net/internal/socktest.s                                     15715    15684    -31     -0.197%
runtime/pprof.s                                             70273    70177    -96     -0.137%
crypto/tls.s                                                288762   288684   -78     -0.027%
testing.s                                                   112376   112300   -76     -0.068%
internal/fuzz.s                                             89544    89535    -9      -0.010%
net/smtp.s                                                  11357    11325    -32     -0.282%
vendor/golang.org/x/net/nettest.s                           27449    27361    -88     -0.321%
testing/internal/testdeps.s                                 6384     6369     -15     -0.235%
go/types.s                                                  484464   484324   -140    -0.029%
cmd/internal/buildid.s                                      17646    17625    -21     -0.119%
go/internal/gccgoimporter.s                                 44931    44920    -11     -0.024%
go/internal/srcimporter.s                                   9989     9983     -6      -0.060%
cmd/api.s                                                   35098    35075    -23     -0.066%
net/http.s                                                  551134   550680   -454    -0.082%
cmd/internal/obj.s                                          121795   121750   -45     -0.037%
cmd/compile/internal/syntax.s                               170092   170075   -17     -0.010%
expvar.s                                                    8959     8945     -14     -0.156%
net/http/httptest.s                                         16201    16198    -3      -0.019%
net/http/httputil.s                                         44379    44339    -40     -0.090%
net/http/fcgi.s                                             18105    18099    -6      -0.033%
cmd/compile/internal/logopt.s                               9916     9905     -11     -0.111%
cmd/vendor/golang.org/x/tools/cover.s                       9722     9720     -2      -0.021%
cmd/compile/internal/base.s                                 38986    38982    -4      -0.010%
cmd/covdata.s                                               39190    39182    -8      -0.020%
cmd/go/internal/fsys.s                                      17948    17938    -10     -0.056%
cmd/dist.s                                                  169725   169616   -109    -0.064%
cmd/compile/internal/types.s                                74666    74639    -27     -0.036%
cmd/go/internal/par.s                                       4517     4516     -1      -0.022%
cmd/go/internal/lockedfile.s                                22412    22410    -2      -0.009%
cmd/compile/internal/types2.s                               476715   476596   -119    -0.025%
cmd/go/internal/trace.s                                     4888     4877     -11     -0.225%
cmd/vendor/golang.org/x/mod/module.s                        20445    20415    -30     -0.147%
cmd/vendor/golang.org/x/mod/sumdb/dirhash.s                 3596     3587     -9      -0.250%
cmd/go/internal/cache.s                                     23871    23839    -32     -0.134%
cmd/vendor/golang.org/x/mod/zip.s                           36602    36567    -35     -0.096%
cmd/vendor/golang.org/x/mod/sumdb.s                         27669    27552    -117    -0.423%
cmd/compile/internal/ir.s                                   253597   253590   -7      -0.003%
cmd/go/internal/vcs.s                                       45027    45025    -2      -0.004%
cmd/go/internal/modfetch/codehost.s                         80672    80583    -89     -0.110%
cmd/go/internal/modindex.s                                  79273    79271    -2      -0.003%
cmd/go/internal/modconv.s                                   14793    14792    -1      -0.007%
cmd/gofmt.s                                                 29600    29587    -13     -0.044%
cmd/go/internal/modfetch.s                                  111067   111017   -50     -0.045%
cmd/go/internal/vcweb.s                                     37882    37872    -10     -0.026%
cmd/compile/internal/typecheck.s                            319852   319834   -18     -0.006%
cmd/vendor/golang.org/x/term.s                              24398    24338    -60     -0.246%
cmd/vendor/github.com/google/pprof/profile.s                149107   149103   -4      -0.003%
cmd/go/internal/modload.s                                   275078   275020   -58     -0.021%
cmd/vendor/github.com/ianlancetaylor/demangle.s             264051   264013   -38     -0.014%
cmd/compile/internal/staticdata.s                           14019    14011    -8      -0.057%
cmd/go/internal/modcmd.s                                    47591    47582    -9      -0.019%
cmd/vendor/github.com/google/pprof/internal/binutils.s      37978    37926    -52     -0.137%
cmd/vendor/golang.org/x/tools/go/analysis/passes/buildtag.s 6880     6864     -16     -0.233%
cmd/go/internal/work.s                                      287700   287637   -63     -0.022%
cmd/vendor/github.com/google/pprof/internal/symbolizer.s    10171    10138    -33     -0.324%
cmd/go/internal/modget.s                                    58314    58250    -64     -0.110%
cmd/go/internal/test.s                                      52538    52534    -4      -0.008%
cmd/trace.s                                                 100245   100242   -3      -0.003%
cmd/vendor/golang.org/x/tools/go/ast/astutil.s              50731    50724    -7      -0.014%
cmd/vendor/golang.org/x/tools/internal/facts.s              13018    13011    -7      -0.054%
cmd/link/internal/ld.s                                      562438   562377   -61     -0.011%
cmd/vendor/github.com/google/pprof/internal/driver.s        148389   148338   -51     -0.034%
cmd/compile/internal/ssa.s                                  3639799  3639727  -72     -0.002%
cmd/compile/internal/ssagen.s                               359076   359028   -48     -0.013%
cmd/compile/internal/amd64.s                                31084    30582    -502    -1.615%
cmd/compile/internal/noder.s                                407972   407949   -23     -0.006%
cmd/compile/internal/gc.s                                   20101    20069    -32     -0.159%
total                                                       20771294 20766881 -4413   -0.021%

Change-Id: I2a4b01449e94906fa1ed3fb96a790977466368d9
Reviewed-on: https://go-review.googlesource.com/c/go/+/453536
Reviewed-by: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
2023-05-24 22:44:35 +00:00
Damien Neil
2cac7e89da crypto/tls: support QUIC as a transport
Add a QUICConn type for use by QUIC implementations.

A QUICConn provides unencrypted handshake bytes and connection
secrets to the QUIC layer, and receives handshake bytes.

For #44886

Change-Id: I859dda4cc6d466a1df2fb863a69d3a2a069110d5
Reviewed-on: https://go-review.googlesource.com/c/go/+/493655
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Run-TryBot: Damien Neil <dneil@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Marten Seemann <martenseemann@gmail.com>
2023-05-24 22:40:18 +00:00
Jorropo
543e601c11 net/http: second do not force the Content-Length header if nilled
This is a second round of CL 469095 which has been fixed after
the issue discovered in the revert CL 495017.

The issue was a missing res.Body.Close() in the newly added test.

Change-Id: Ifd9d8458022e59f4486397443a2862d06383e990
Reviewed-on: https://go-review.googlesource.com/c/go/+/495115
Reviewed-by: Damien Neil <dneil@google.com>
Run-TryBot: Jorropo <jorropo.pgm@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
2023-05-24 22:39:33 +00:00
Tobias Klauser
79a8997ac5 os: add dirFs.ReadDir to implement fs.ReadDirFS for DirFS
Follow CL 416775 which added dirFs.ReadFile.

Fixes #53761

Change-Id: Iec19a815ab7c37a3206be141518cc587a588de20
Reviewed-on: https://go-review.googlesource.com/c/go/+/498015
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
2023-05-24 22:39:06 +00:00
Mateusz Poliwczak
bc2095280e net: root the nodata test domain to avoid search domains
I came across similar issue in CL 455275.
Without rooting this, the search domains might affect
the query, so the test might not prove the right thing.
The search domain will cause a change from no data
to NXDOMAIN error.

Change-Id: I59f4de2635f03c69adf29b74e25e4ebd71e7413b
GitHub-Last-Rev: 3a086c74f1
GitHub-Pull-Request: golang/go#60197
Reviewed-on: https://go-review.googlesource.com/c/go/+/494896
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
2023-05-24 22:38:08 +00:00
Filippo Valsorda
1079e574d4 crypto/rsa,crypto/internal/bigmod: optimized short exponentiations
RSA encryption and verification performs an exponentiation by a value
usually just a few bits long. The current strategy with table
precomputation is not efficient.

Add an ExpShort bigmod method, and use it in RSA public key operations.

After this, almost all CPU time in encryption/verification is spent
preparing the constants for the modulus, because PublicKey doesn't have
a Precompute function.

This speeds up signing a bit too, because it performs a verification to
protect against faults.

name                    old time/op  new time/op  delta
DecryptPKCS1v15/2048-4  1.13ms ± 0%  1.13ms ± 0%   -0.43%  (p=0.000 n=8+9)
DecryptPKCS1v15/3072-4  3.20ms ± 0%  3.15ms ± 0%   -1.59%  (p=0.000 n=10+8)
DecryptPKCS1v15/4096-4  6.45ms ± 0%  6.42ms ± 0%   -0.49%  (p=0.000 n=10+10)
EncryptPKCS1v15/2048-4   132µs ± 0%   108µs ± 0%  -17.99%  (p=0.000 n=10+10)
DecryptOAEP/2048-4      1.13ms ± 0%  1.14ms ± 0%   +0.91%  (p=0.000 n=10+10)
EncryptOAEP/2048-4       132µs ± 0%   108µs ± 0%  -18.09%  (p=0.000 n=10+10)
SignPKCS1v15/2048-4     1.18ms ± 0%  1.14ms ± 1%   -3.30%  (p=0.000 n=10+10)
VerifyPKCS1v15/2048-4    131µs ± 0%   107µs ± 0%  -18.30%  (p=0.000 n=9+10)
SignPSS/2048-4          1.18ms ± 0%  1.15ms ± 1%   -1.87%  (p=0.000 n=10+10)
VerifyPSS/2048-4         132µs ± 0%   108µs ± 0%  -18.30%  (p=0.000 n=10+9)

Updates #57752

Change-Id: Ic89273a58002b32b1c5c3185a35262694ceef409
Reviewed-on: https://go-review.googlesource.com/c/go/+/492935
Run-TryBot: Filippo Valsorda <filippo@golang.org>
Auto-Submit: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Roland Shoemaker <roland@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2023-05-24 22:38:06 +00:00
Filippo Valsorda
7d96475daa crypto/internal/bigmod: switch to saturated limbs
Turns out that unsaturated limbs being more performant for Montgomery
multiplication was true in portable C89, but is now a misconception.
With add-with-carry instructions, it's possible to run the carry chain
across the limbs, instead of needing the limb-by-limb product to fit in
two words.

Switch to saturated limbs, and import the same Montgomery loop as
math/big, along with its assembly for some architectures. Since here we
know the sizes we care about, we can drop most of the assembly
scaffolding. For amd64, ported to avo, too.

We recover all the Go 1.20 performance loss on private key operations on
both Intel Xeon and AMD EPYC, with even a 10% improvement over Go 1.19
(which used variable-time math/big) for some operations.

goos: linux
goarch: amd64
pkg: crypto/rsa
cpu: Intel(R) Xeon(R) Platinum 8375C CPU @ 2.90GHz
                       │ go1.19.txt  │       go1.20.txt         │         new.txt          │
                       │   sec/op    │    sec/op      vs base   │    sec/op      vs base   │
DecryptPKCS1v15/2048-4   1.175m ± 0%     1.515m ± 0%    +28.95%     1.132m ± 0%     -3.59%
DecryptPKCS1v15/3072-4   3.428m ± 1%     4.516m ± 0%    +31.75%     3.198m ± 0%     -6.69%
DecryptPKCS1v15/4096-4   7.405m ± 0%    10.092m ± 0%    +36.29%     6.446m ± 0%    -12.95%
EncryptPKCS1v15/2048-4   7.426µ ± 0%   170.829µ ± 0%  +2200.57%   131.874µ ± 0%  +1675.97%
DecryptOAEP/2048-4       1.175m ± 0%     1.524m ± 0%    +29.68%     1.137m ± 0%     -3.26%
EncryptOAEP/2048-4       9.609µ ± 0%   173.008µ ± 0%  +1700.48%   132.344µ ± 0%  +1277.29%
SignPKCS1v15/2048-4      1.181m ± 0%     1.563m ± 0%    +32.34%     1.177m ± 0%     -0.37% 
VerifyPKCS1v15/2048-4    6.452µ ± 0%   170.092µ ± 0%  +2536.06%   131.225µ ± 0%  +1933.70%
SignPSS/2048-4           1.184m ± 0%     1.574m ± 0%    +32.88%     1.175m ± 0%     -0.84%
VerifyPSS/2048-4         9.151µ ± 1%   172.909µ ± 0%  +1789.50%   132.391µ ± 0%  +1346.74%

                       │  go1.19.txt   │      go1.20.txt       │       new.txt         │
                       │     B/op      │     B/op      vs base │     B/op      vs base │
DecryptPKCS1v15/2048-4    24266.5 ± 0%     640.0 ± 0%  -97.36%     640.0 ± 0%  -97.36%
DecryptPKCS1v15/3072-4   45.465Ki ± 0%   3.375Ki ± 0%  -92.58%   4.688Ki ± 0%  -89.69%
DecryptPKCS1v15/4096-4   61.080Ki ± 0%   4.625Ki ± 0%  -92.43%   6.250Ki ± 0%  -89.77%
EncryptPKCS1v15/2048-4    3.138Ki ± 0%   1.146Ki ± 0%  -63.49%   1.082Ki ± 0%  -65.52%
DecryptOAEP/2048-4        24500.0 ± 0%     872.0 ± 0%  -96.44%     872.0 ± 0%  -96.44%
EncryptOAEP/2048-4        3.610Ki ± 0%   1.371Ki ± 0%  -62.02%   1.308Ki ± 0%  -63.78%
SignPKCS1v15/2048-4       26933.0 ± 0%     896.0 ± 0%  -96.67%     896.0 ± 0%  -96.67%
VerifyPKCS1v15/2048-4      3209.0 ± 0%     912.0 ± 0%  -71.58%     848.0 ± 0%  -73.57%
SignPSS/2048-4           26.940Ki ± 0%   1.266Ki ± 0%  -95.30%   1.266Ki ± 0%  -95.30%
VerifyPSS/2048-4          3.337Ki ± 0%   1.094Ki ± 0%  -67.22%   1.031Ki ± 0%  -69.10%

                       │  go1.19.txt  │     go1.20.txt      │      new.txt          │
                       │  allocs/op   │ allocs/op   vs base │ allocs/op   vs base   │
DecryptPKCS1v15/2048-4    97.000 ± 0%   4.000 ± 0%  -95.88%     4.000 ± 0%  -95.88%
DecryptPKCS1v15/3072-4    107.00 ± 0%   10.00 ± 0%  -90.65%     12.00 ± 0%  -88.79%
DecryptPKCS1v15/4096-4    113.00 ± 0%   10.00 ± 0%  -91.15%     12.00 ± 0%  -89.38%
EncryptPKCS1v15/2048-4     7.000 ± 0%   7.000 ± 0%        ~     7.000 ± 0%        ~  
DecryptOAEP/2048-4        103.00 ± 0%   10.00 ± 0%  -90.29%     10.00 ± 0%  -90.29%
EncryptOAEP/2048-4         14.00 ± 0%   13.00 ± 0%   -7.14%     13.00 ± 0%   -7.14%
SignPKCS1v15/2048-4      102.000 ± 0%   5.000 ± 0%  -95.10%     5.000 ± 0%  -95.10%
VerifyPKCS1v15/2048-4      7.000 ± 0%   6.000 ± 0%  -14.29%     6.000 ± 0%  -14.29%
SignPSS/2048-4            108.00 ± 0%   10.00 ± 0%  -90.74%     10.00 ± 0%  -90.74%
VerifyPSS/2048-4           12.00 ± 0%   11.00 ± 0%   -8.33%     11.00 ± 0%   -8.33%

goos: linux
goarch: amd64
pkg: crypto/rsa
cpu: AMD EPYC 7R13 Processor
                       │ go1.19a.txt │       go1.20a.txt        │        newa.txt          │
                       │   sec/op    │    sec/op      vs base   │    sec/op      vs base   │
DecryptPKCS1v15/2048-4   970.0µ ± 0%    1667.6µ ± 0%    +71.92%     951.6µ ± 0%     -1.90%
DecryptPKCS1v15/3072-4   2.949m ± 0%     5.124m ± 0%    +73.75%     2.675m ± 0%     -9.29%
DecryptPKCS1v15/4096-4   6.350m ± 0%    11.660m ± 0%    +83.62%     5.746m ± 0%     -9.51%
EncryptPKCS1v15/2048-4   6.605µ ± 1%   183.807µ ± 0%  +2683.05%   123.720µ ± 0%  +1773.27%
DecryptOAEP/2048-4       973.8µ ± 0%    1670.8µ ± 0%    +71.57%     951.8µ ± 0%     -2.27% 
EncryptOAEP/2048-4       8.444µ ± 1%   185.889µ ± 0%  +2101.56%   124.142µ ± 0%  +1370.27%
SignPKCS1v15/2048-4      976.8µ ± 0%    1725.5µ ± 0%    +76.65%     979.6µ ± 0%     +0.28%
VerifyPKCS1v15/2048-4    5.713µ ± 0%   182.983µ ± 0%  +3103.19%   122.737µ ± 0%  +2048.56%
SignPSS/2048-4           980.3µ ± 0%    1729.5µ ± 0%    +76.42%     985.7µ ± 3%     +0.55%
VerifyPSS/2048-4         8.168µ ± 1%   185.312µ ± 0%  +2168.76%   123.772µ ± 0%  +1415.33%

Fixes #59463
Fixes #59442
Updates #57752

Change-Id: I311a9c1f4f5288e47e53ca14f615a443f3132734
Reviewed-on: https://go-review.googlesource.com/c/go/+/471259
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Filippo Valsorda <filippo@golang.org>
Auto-Submit: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Roland Shoemaker <roland@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-05-24 22:37:58 +00:00
Jakub Ciolek
1ddab59229 cmd/compile: use shorter version of movzx for LoweredHASCPUFeature
The values loaded from memory are booleans. Upper 32 bits are not needed.
Use the 32-bit version of movzx.

compilecmp linux/amd64:

math/bits
math/bits.OnesCount 83 -> 78  (-6.02%)

math
math.ceil 109 -> 103  (-5.50%)
math.Gamma changed
math.sinPi changed

runtime
runtime.(*sweepLocked).sweep changed
runtime.(*mspan).countAlloc 182 -> 178  (-2.20%)
runtime.(*pageBits).popcntRange 552 -> 542  (-1.81%)
go:(**mspan).runtime.countAlloc 243 -> 232  (-4.53%)
runtime.sweepLocked.countAlloc 221 -> 215  (-2.71%)
runtime.(*pageCache).allocN changed

math/rand
math/rand.(*Zipf).Uint64 506 -> 499  (-1.38%)

cmd/vendor/golang.org/x/sys/unix
cmd/vendor/golang.org/x/sys/unix.(*CPUSet).Count 147 -> 145  (-1.36%)

cmd/internal/obj/ppc64
cmd/internal/obj/ppc64.(*ctxt9).asmout changed

cmd/cover
main.htmlGen 1170 -> 1164  (-0.51%)

cmd/compile/internal/bitvec
cmd/compile/internal/bitvec.(*BitVec).Count 221 -> 213  (-3.62%)
cmd/compile/internal/bitvec.BitVec.Count changed

cmd/link/internal/loader
cmd/link/internal/loader.(*Bitmap).Count 214 -> 212  (-0.93%)
cmd/link/internal/loader.Bitmap.Count 171 -> 169  (-1.17%)
cmd/link/internal/loader.(*Loader).NReachableSym changed
cmd/link/internal/loader.(*Loader).Stat changed

cmd/vendor/github.com/ianlancetaylor/demangle
cmd/vendor/github.com/ianlancetaylor/demangle.oldRustToString changed

cmd/vendor/github.com/google/pprof/internal/graph
cmd/vendor/github.com/google/pprof/internal/graph.(*builder).addNode changed

cmd/compile/internal/ssa
cmd/compile/internal/ssa.rewriteValuePPC64_OpPPC64FTRUNC changed
cmd/compile/internal/ssa.(*regAllocState).computeLive 10441 -> 10409  (-0.31%)
cmd/compile/internal/ssa.(*regAllocState).regalloc changed
cmd/compile/internal/ssa.rewriteValuePPC64_OpPPC64FCEIL changed
cmd/compile/internal/ssa.(*regAllocState).allocReg changed
cmd/compile/internal/ssa.rewriteValuePPC64_OpPPC64FFLOOR changed
cmd/compile/internal/ssa.countRegs 83 -> 78  (-6.02%)

cmd/compile/internal/liveness
cmd/compile/internal/liveness.ArgLiveness.func2 changed

cmd/compile/internal/amd64
cmd/compile/internal/amd64.ssaGenValue changed

file                               before   after    Δ       %
math/bits.s                        2618     2613     -5      -0.191%
math.s                             37246    37240    -6      -0.016%
runtime.s                          486910   486879   -31     -0.006%
math/rand.s                        9980     9973     -7      -0.070%
cmd/vendor/golang.org/x/sys/unix.s 119232   119230   -2      -0.002%
cmd/cover.s                        31341    31335    -6      -0.019%
cmd/compile/internal/bitvec.s      5542     5534     -8      -0.144%
cmd/link/internal/loader.s         75315    75311    -4      -0.005%
cmd/compile/internal/ssa.s         3570581  3570544  -37     -0.001%
total                              20041552 20041446 -106    -0.001%

Change-Id: I29845744c512a1f833cb1fa3bb43b6b0e0eaac68
Reviewed-on: https://go-review.googlesource.com/c/go/+/430175
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Martin Möhrmann <moehrmann@google.com>
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
2023-05-24 22:27:06 +00:00
Robert Griesemer
15a4e0d970 spec: re-order built-ins sections alphabetically (more or less)
Put the sections for the various built-ins into alphabetical order
based on the built-in name, while keeping built-ins that belong
together together.

The order is now (captialized letter determines order):

- Append
- Clear
- Close
- Complex, real, imag
- Delete
- Len, cap
- Make
- Min, max (to be inserted here)
- New
- Panic, recover
- Print, println

There are some white space adjustments but no changes to the prose
of the moved sections.

Change-Id: Iaec509918c6bc965df3f28656374de03279bdc9e
Reviewed-on: https://go-review.googlesource.com/c/go/+/498135
Reviewed-by: Robert Griesemer <gri@google.com>
TryBot-Bypass: Robert Griesemer <gri@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-05-24 22:24:59 +00:00
Brad Fitzpatrick
9b41418074 cmd/go/internal/cache: use internal/godebug for three GODEBUGs
And register/document them.

Change-Id: If0f1cf3c09230e0f63d03c52e56e51a030468ab2
Reviewed-on: https://go-review.googlesource.com/c/go/+/487655
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
2023-05-24 22:05:27 +00:00
Derek Parker
c5ba9d2232 cmd/compile: prioritize non-CALL struct member comparisons
This patch optimizes reflectdata.geneq to pick apart structs in array
equality and prioritize non-CALL comparisons over those which involve
a runtime function call. This is similar to how arrays of strings
operate currently. Instead of looping over the entire array of structs
once, if there are any comparisons which involve a runtime function
call we instead loop twice. The first loop is all simple, quick
comparisons. If no inequality is found in the first loop the second loop
calls runtime functions for larger memory comparison, which is more
expensive.

For the benchmarks added in this change:

Old:

```
goos: linux
goarch: amd64
pkg: cmd/compile/internal/reflectdata
cpu: AMD Ryzen 9 3950X 16-Core Processor
BenchmarkEqArrayOfStructsEq
BenchmarkEqArrayOfStructsEq-32            797196              1497 ns/op
BenchmarkEqArrayOfStructsEq-32            758332              1581 ns/op
BenchmarkEqArrayOfStructsEq-32            764871              1599 ns/op
BenchmarkEqArrayOfStructsEq-32            760706              1558 ns/op
BenchmarkEqArrayOfStructsEq-32            763112              1476 ns/op
BenchmarkEqArrayOfStructsEq-32            747696              1547 ns/op
BenchmarkEqArrayOfStructsEq-32            756526              1562 ns/op
BenchmarkEqArrayOfStructsEq-32            768829              1486 ns/op
BenchmarkEqArrayOfStructsEq-32            764248              1477 ns/op
BenchmarkEqArrayOfStructsEq-32            752767              1545 ns/op
BenchmarkEqArrayOfStructsNotEq
BenchmarkEqArrayOfStructsNotEq-32         757194              1542 ns/op
BenchmarkEqArrayOfStructsNotEq-32         748942              1552 ns/op
BenchmarkEqArrayOfStructsNotEq-32         766687              1554 ns/op
BenchmarkEqArrayOfStructsNotEq-32         732069              1541 ns/op
BenchmarkEqArrayOfStructsNotEq-32         759163              1576 ns/op
BenchmarkEqArrayOfStructsNotEq-32         796402              1629 ns/op
BenchmarkEqArrayOfStructsNotEq-32         726610              1570 ns/op
BenchmarkEqArrayOfStructsNotEq-32         735770              1584 ns/op
BenchmarkEqArrayOfStructsNotEq-32         745255              1610 ns/op
BenchmarkEqArrayOfStructsNotEq-32         743872              1591 ns/op
PASS
ok      cmd/compile/internal/reflectdata        35.446s
```

New:

```
goos: linux
goarch: amd64
pkg: cmd/compile/internal/reflectdata
cpu: AMD Ryzen 9 3950X 16-Core Processor
BenchmarkEqArrayOfStructsEq
BenchmarkEqArrayOfStructsEq-32            618379              1827 ns/op
BenchmarkEqArrayOfStructsEq-32            619368              1922 ns/op
BenchmarkEqArrayOfStructsEq-32            616023              1910 ns/op
BenchmarkEqArrayOfStructsEq-32            617575              1905 ns/op
BenchmarkEqArrayOfStructsEq-32            610399              1889 ns/op
BenchmarkEqArrayOfStructsEq-32            615378              1823 ns/op
BenchmarkEqArrayOfStructsEq-32            613732              1883 ns/op
BenchmarkEqArrayOfStructsEq-32            613924              1894 ns/op
BenchmarkEqArrayOfStructsEq-32            657799              1876 ns/op
BenchmarkEqArrayOfStructsEq-32            665580              1873 ns/op
BenchmarkEqArrayOfStructsNotEq
BenchmarkEqArrayOfStructsNotEq-32        1834915               627.4 ns/op
BenchmarkEqArrayOfStructsNotEq-32        1806370               660.5 ns/op
BenchmarkEqArrayOfStructsNotEq-32        1828075               625.5 ns/op
BenchmarkEqArrayOfStructsNotEq-32        1819741               641.6 ns/op
BenchmarkEqArrayOfStructsNotEq-32        1813128               632.3 ns/op
BenchmarkEqArrayOfStructsNotEq-32        1865250               643.7 ns/op
BenchmarkEqArrayOfStructsNotEq-32        1828617               632.8 ns/op
BenchmarkEqArrayOfStructsNotEq-32        1862748               633.6 ns/op
BenchmarkEqArrayOfStructsNotEq-32        1825432               638.7 ns/op
BenchmarkEqArrayOfStructsNotEq-32        1804382               628.8 ns/op
PASS
ok      cmd/compile/internal/reflectdata        36.571s
```

Benchstat comparison:

```
name                      old time/op  new time/op  delta
EqArrayOfStructsEq-32     1.53µs ± 4%  1.88µs ± 3%  +22.66%  (p=0.000 n=10+10)
EqArrayOfStructsNotEq-32  1.57µs ± 3%  0.64µs ± 4%  -59.59%  (p=0.000 n=10+10)
```

So, the equal case is a bit slower (unrolling the loop helps with that),
but the non-equal case is now much faster.

Change-Id: I05d776456c79c48a3d6d74b18c45246e58ffbea6
GitHub-Last-Rev: f57ee07d05
GitHub-Pull-Request: golang/go#59409
Reviewed-on: https://go-review.googlesource.com/c/go/+/481895
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2023-05-24 21:55:14 +00:00
miller
05cc9e5587 cmd/go: quote entries in list-valued variables for go env in plan9
When 'go env' without an argument prints environment variables as
a script which can be executed by the shell, variables with a
list value in Plan 9 (such as GOPATH) need to be printed with each
element enclosed in single quotes in case it contains characters
significant to the Plan 9 shell (such as ' ' or '=').

For #58508

Change-Id: Ia30f51307cc6d07a7e3ada6bf9d60bf9951982ff
Reviewed-on: https://go-review.googlesource.com/c/go/+/493535
Run-TryBot: Cherry Mui <cherryyz@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Russ Cox <rsc@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
2023-05-24 21:48:53 +00:00
Michael Anthony Knyszek
97f56645e2 doc: add release note for runtime/metrics additions
For #56857.

Change-Id: I03bdba906d271d97ce29874c50d5aba55dc285b1
Reviewed-on: https://go-review.googlesource.com/c/go/+/498075
Run-TryBot: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Michael Knyszek <mknyszek@google.com>
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Reviewed-by: Michael Pratt <mpratt@google.com>
2023-05-24 21:47:00 +00:00
Roland Shoemaker
295c237b4d crypto/tls: enforce 1.3 record version semantics
1.3 expects the record version is always 1.2 (0x0303), this previously
wasn't enforced.

Change-Id: I8bc88f588e76f9b862b57601336bb5c5ff08b30e
Reviewed-on: https://go-review.googlesource.com/c/go/+/485876
Reviewed-by: Damien Neil <dneil@google.com>
Auto-Submit: Roland Shoemaker <roland@golang.org>
Run-TryBot: Roland Shoemaker <roland@golang.org>
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2023-05-24 21:35:01 +00:00
fangguizhen
eea26e8e68 net/http: check for nil, nil return from DialContext as well as Dial
Change-Id: I3b6dd9c40b3c10db2eda6a25b9d556c9c3733bbc
GitHub-Last-Rev: fd9b0c4193
GitHub-Pull-Request: golang/go#57448
Reviewed-on: https://go-review.googlesource.com/c/go/+/458876
Reviewed-by: Javad Rajabzadeh <ja7ad@live.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
2023-05-24 21:26:44 +00:00
Sebastiaan van Stijn
85e84a49e4 crypto/tls: remove unused nonAESGCMAEADCiphers variable
It was no longer used since CL 314609

Change-Id: Id103b7490a6088a589d76442d3740f8a1453c25d
GitHub-Last-Rev: 20a7fe0778
GitHub-Pull-Request: golang/go#56608
Reviewed-on: https://go-review.googlesource.com/c/go/+/448277
Reviewed-by: Roland Shoemaker <roland@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
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2023-05-24 21:17:41 +00:00
Tobias Klauser
78143d96cc maps: move test funcs to maps_test.go
keysForBenchmarking and valuesForBenchmarking are only used in benchmark
tests.

Change-Id: Ie4fcb81e0470cc8627b395644787429b79952538
Reviewed-on: https://go-review.googlesource.com/c/go/+/497380
Reviewed-by: Keith Randall <khr@google.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Bypass: Ian Lance Taylor <iant@google.com>
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Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
2023-05-24 21:17:23 +00:00
Jonathan Amsterdam
9b57b33556 log/slog: add link to handler-writing guide
Add a shortlink in the doc to a guide to writing handlers, which is a work
in progress.

Change-Id: I1b01c90468382ffe53d9ad6f38253906e3f44857
Reviewed-on: https://go-review.googlesource.com/c/go/+/495920
Reviewed-by: Alan Donovan <adonovan@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
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2023-05-24 20:58:16 +00:00
Joe Tsai
a7cb7df45a net/http/pprof: adjust URL in package doc
The indentation makes the URL be treated as a code block,
thus preventing automatic detection of this URL.
Avoid using a code block for this.

Change-Id: Ie37ae18ec0969ef2d5a6e3b92b2512dac093dbf6
Reviewed-on: https://go-review.googlesource.com/c/go/+/478015
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-05-24 20:26:47 +00:00
Simon Kotwicz
3c6883ccbc net/http: add doc details regarding Transport retries
Add doc details to Transport mentioning retries only occur if a connection
has been already been used successfully.

Change-Id: I37afbad50b885248e0e6cd5e799ad848bf97c86b
GitHub-Last-Rev: 7c45c32aec
GitHub-Pull-Request: golang/go#51273
Reviewed-on: https://go-review.googlesource.com/c/go/+/386994
Run-TryBot: Damien Neil <dneil@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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Reviewed-by: Damien Neil <dneil@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
2023-05-24 20:25:33 +00:00
Oleksandr Redko
9a49b26bdf internal/coverage: fix comment dupword, error typo
- Correct duplicated word in comments.
- Fix typo in error message.

Change-Id: I688d723ea3ac4d0b1981afd747e4b2df00c81448
Reviewed-on: https://go-review.googlesource.com/c/go/+/485016
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Than McIntosh <thanm@google.com>
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Reviewed-by: Than McIntosh <thanm@google.com>
2023-05-24 20:23:21 +00:00
Michael Pratt
a6fb97b6a7 os: explicitly check for invalid FD in NewFile
CL 497075 refactored NewFile to unconditionally dereference the file
returned by newFile. However, newFile can return nil if passed a
negative FD, which now causes a crash.

Resolve this by moving the invalid check earlier in NewFile, which also
lets us avoid a useless fcntl syscall on a negative FD.

Since we convert to int to check sign, adjust newFile to take an int
rather than uintptr, which cleans up a lot of conversions.

Fixes #60406

Change-Id: I382a74e22f1cc01f7a2dcf1ff4efca6a79c4dd57
Reviewed-on: https://go-review.googlesource.com/c/go/+/497877
Run-TryBot: Michael Pratt <mpratt@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-05-24 20:19:46 +00:00
Russ Cox
83dfe5cf62 cmd/go: implement 'toolchain local'
The actual selection code already worked
(except for the x/mod parser not reading the file),
so all that is necessary is a test.
For the test, move the version check up before
the module line presence check.

For #57001.

Change-Id: Iaa4f9b92d38fcfd99dc1665ec8d3eb0e52007bb4
Reviewed-on: https://go-review.googlesource.com/c/go/+/497555
TryBot-Bypass: Russ Cox <rsc@golang.org>
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Reviewed-by: Bryan Mills <bcmills@google.com>
2023-05-24 19:27:00 +00:00
Mark Ryan
a4772a1a59 runtime: fix alignment code in memclr_riscv64.s
The existing code incorrectly determines whether the pointer passed to
memclrNoHeapPointers is 8 byte aligned (it currently checks to see whether
it's 4 byte aligned).

In addition, the code that aligns the pointer, by individually filling
the first few bytes of the buffer with zeros, is also incorrect.  It adjusts
the pointer by the wrong number of bytes, resulting in most cases, in
an unaligned pointer.

This commit fixes both of these issues by anding the pointer with 7
rather than 3 to determine its alignment, and by individually filling
the first (8 - (pointer & 7)) bytes with 0 to align the buffer, rather
than the first (pointer & 3) bytes.

We also remove an unnecessary immediate MOV instruction.

A new benchmark is added to test the performance of memclrNoHeapPointers
on non-aligned pointers.  Results of the existing and the new benchmark
on a SiFive HiFive Unmatched A00 with 16GB of RAM running Ubuntu 23.04
are presented below.

Memclr/5-4                     21.98n ± 7%   22.66n ± 9%        ~ (p=0.079 n=10)
Memclr/16-4                    20.85n ± 3%   21.09n ± 5%        ~ (p=0.796 n=10)
Memclr/64-4                    28.20n ± 4%   27.50n ± 3%        ~ (p=0.093 n=10)
Memclr/256-4                   53.66n ± 8%   53.44n ± 8%        ~ (p=0.280 n=10)
Memclr/4096-4                  522.6n ± 1%   523.4n ± 1%        ~ (p=0.240 n=10)
Memclr/65536-4                 24.17µ ± 0%   24.13µ ± 0%   -0.19% (p=0.029 n=10)
Memclr/1M-4                    446.9µ ± 0%   446.9µ ± 0%        ~ (p=0.684 n=10)
Memclr/4M-4                    12.69m ± 2%   12.79m ± 3%   +0.78% (p=0.043 n=10)
Memclr/8M-4                    29.75m ± 0%   29.76m ± 0%   +0.03% (p=0.015 n=10)
Memclr/16M-4                   60.34m ± 0%   60.32m ± 0%        ~ (p=0.247 n=10)
Memclr/64M-4                   241.2m ± 0%   241.3m ± 0%        ~ (p=0.247 n=10)
MemclrUnaligned/0_5-4          27.71n ± 0%   27.72n ± 1%        ~ (p=0.142 n=10)
MemclrUnaligned/0_16-4         26.95n ± 0%   26.04n ± 0%   -3.38% (p=0.000 n=10)
MemclrUnaligned/0_64-4         38.27n ± 4%   40.15n ± 6%   +4.89% (p=0.005 n=10)
MemclrUnaligned/0_256-4        63.95n ± 3%   64.19n ± 2%        ~ (p=0.971 n=10)
MemclrUnaligned/0_4096-4       532.6n ± 1%   530.9n ± 1%        ~ (p=0.324 n=10)
MemclrUnaligned/0_65536-4      24.30µ ± 0%   24.22µ ± 0%   -0.32% (p=0.023 n=10)
MemclrUnaligned/1_5-4          29.40n ± 0%   29.39n ± 0%        ~ (p=0.060 n=10)
MemclrUnaligned/1_16-4        632.65n ± 1%   63.80n ± 2%  -89.92% (p=0.000 n=10)
MemclrUnaligned/1_64-4       4091.00n ± 1%   73.23n ± 1%  -98.21% (p=0.000 n=10)
MemclrUnaligned/1_256-4     17803.50n ± 1%   92.03n ± 1%  -99.48% (p=0.000 n=10)
MemclrUnaligned/1_4096-4    294150.0n ± 1%   561.9n ± 1%  -99.81% (p=0.000 n=10)
MemclrUnaligned/1_65536-4    4692.80µ ± 1%   24.44µ ± 0%  -99.48% (p=0.000 n=10)
MemclrUnaligned/4_5-4          27.71n ± 0%   27.71n ± 0%        ~ (p=0.308 n=10)
MemclrUnaligned/4_16-4       1187.00n ± 1%   50.74n ± 3%  -95.72% (p=0.000 n=10)
MemclrUnaligned/4_64-4       4617.00n ± 1%   59.89n ± 2%  -98.70% (p=0.000 n=10)
MemclrUnaligned/4_256-4     18472.50n ± 1%   84.76n ± 2%  -99.54% (p=0.000 n=10)
MemclrUnaligned/4_4096-4    292904.0n ± 1%   553.7n ± 0%  -99.81% (p=0.000 n=10)
MemclrUnaligned/4_65536-4    4716.12µ ± 0%   24.38µ ± 0%  -99.48% (p=0.000 n=10)
MemclrUnaligned/7_5-4          29.39n ± 0%   29.39n ± 0%        ~ (p=1.000 n=10)
MemclrUnaligned/7_16-4        636.80n ± 1%   48.33n ± 5%  -92.41% (p=0.000 n=10)
MemclrUnaligned/7_64-4       4094.00n ± 1%   58.88n ± 3%  -98.56% (p=0.000 n=10)
MemclrUnaligned/7_256-4     17869.00n ± 2%   82.70n ± 3%  -99.54% (p=0.000 n=10)
MemclrUnaligned/7_4096-4    294110.5n ± 1%   554.6n ± 1%  -99.81% (p=0.000 n=10)
MemclrUnaligned/7_65536-4    4735.00µ ± 1%   24.28µ ± 0%  -99.49% (p=0.000 n=10)
MemclrUnaligned/0_1M-4         447.8µ ± 0%   450.0µ ± 1%   +0.51% (p=0.000 n=10)
MemclrUnaligned/0_4M-4         12.68m ± 1%   12.64m ± 2%   -0.33% (p=0.015 n=10)
MemclrUnaligned/0_8M-4         29.76m ± 0%   29.79m ± 2%        ~ (p=0.075 n=10)
MemclrUnaligned/0_16M-4        60.34m ± 1%   60.49m ± 1%        ~ (p=0.353 n=10)
MemclrUnaligned/0_64M-4        241.3m ± 0%   241.4m ± 0%        ~ (p=0.247 n=10)
MemclrUnaligned/1_1M-4       75937.3µ ± 1%   449.9µ ± 0%  -99.41% (p=0.000 n=10)
MemclrUnaligned/1_4M-4        313.96m ± 2%   12.69m ± 0%  -95.96% (p=0.000 n=10)
MemclrUnaligned/1_8M-4        630.97m ± 1%   29.76m ± 0%  -95.28% (p=0.000 n=10)
MemclrUnaligned/1_16M-4      1263.47m ± 1%   60.35m ± 2%  -95.22% (p=0.000 n=10)
MemclrUnaligned/1_64M-4       5053.5m ± 0%   241.3m ± 0%  -95.23% (p=0.000 n=10)
MemclrUnaligned/4_1M-4       75880.5µ ± 2%   446.5µ ± 0%  -99.41% (p=0.000 n=10)
MemclrUnaligned/4_4M-4        314.00m ± 1%   12.71m ± 2%  -95.95% (p=0.000 n=10)
MemclrUnaligned/4_8M-4        630.63m ± 1%   29.77m ± 2%  -95.28% (p=0.000 n=10)
MemclrUnaligned/4_16M-4      1257.80m ± 0%   60.34m ± 2%  -95.20% (p=0.000 n=10)
MemclrUnaligned/4_64M-4       5041.3m ± 1%   241.2m ± 0%  -95.21% (p=0.000 n=10)
MemclrUnaligned/7_1M-4       75866.2µ ± 1%   446.9µ ± 0%  -99.41% (p=0.000 n=10)
MemclrUnaligned/7_4M-4        309.86m ± 1%   12.70m ± 1%  -95.90% (p=0.000 n=10)
MemclrUnaligned/7_8M-4        626.67m ± 1%   29.75m ± 2%  -95.25% (p=0.000 n=10)
MemclrUnaligned/7_16M-4      1252.84m ± 1%   60.31m ± 0%  -95.19% (p=0.000 n=10)
MemclrUnaligned/7_64M-4       5015.8m ± 1%   241.4m ± 0%  -95.19% (p=0.000 n=10)
geomean                        339.1µ        35.83µ       -89.43%

Change-Id: I3b958a1d8e8f5ef205052e6b985a5ce21e92ef85
Reviewed-on: https://go-review.googlesource.com/c/go/+/496455
Run-TryBot: Joel Sing <joel@sing.id.au>
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Reviewed-by: M Zhuo <mzh@golangcn.org>
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2023-05-24 19:23:45 +00:00
Paul Jolly
2a8969cb36 fmt: correct documentation for Formatter
Before this CL, the documentation for Formatter suggested that
implementers of Format(f State, verb rune) could use Fprint(f) or
Sprint(f) to generate output. The Sprint(f) suggestion however is
invalid.

Fix that by simply suggesting Sprint() alongside Fprint(f).

Fixes #60358

Change-Id: I024e996f6360b812968ef2cd5073cb4c223459e3
Reviewed-on: https://go-review.googlesource.com/c/go/+/497379
Reviewed-by: Bryan Mills <bcmills@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Paul Jolly <paul@myitcv.org.uk>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2023-05-24 18:58:06 +00:00
Oleksandr Redko
5de20f0f34 net/http: fix spelling issues in comments and tests
Change-Id: I1b90619fd073a0c41188278a50ed149b763f0fa8
Reviewed-on: https://go-review.googlesource.com/c/go/+/496135
Run-TryBot: Bryan Mills <bcmills@google.com>
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2023-05-24 18:48:34 +00:00
Michael Anthony Knyszek
72bf8acee9 runtime: ensure consistency of /gc/scan/*
Currently /gc/scan/total:bytes is computed as a separate sum. Compute it
using the same inputs so it's always consistent with the sum of
everything else in /gc/scan/*.

For #56857.

Change-Id: I43d9148a23b1d2eb948ae990193dca1da85df8a3
Reviewed-on: https://go-review.googlesource.com/c/go/+/497880
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2023-05-24 18:13:34 +00:00
Dmitri Shuralyov
e3798efbc2 cmd/dist: copy trailing text more directly in testJSONFilter.process
Use io.Copy¹ that matches the comment more closely, avoids the
possibility of needing a bigger array, and is slightly shorter.
Its downside is that it takes two w.Write calls instead of one.

¹ Admittedly, it was temping to use io.CopyBuffer since the 'data'
  byte slice becomes a viable buffer after its contents are written.
  I resisted that temptation for two reasons.

  One, it would need the io.Reader returned by dec.Buffered() (currently
  a *bytes.Reader) to not implement the io.WriterTo interface for any
  chance of making a positive difference. This seems not very likely.

  Two, to avoid burdening anyone with determining that io.CopyBuffer
  won't panic without 'if len(data) == 0 && data != nil { data = nil }'
  because json.Marshal never returns an empty but non-nil byte slice.

Change-Id: I33c53d9d990f6ee79cd3ab90f12e3b575b9ebe72
Reviewed-on: https://go-review.googlesource.com/c/go/+/497736
Reviewed-by: Austin Clements <austin@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
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2023-05-24 17:40:19 +00:00
Dmitri Shuralyov
c6f33ed113 cmd/dist: make two related panic messages more consistent
In contrast to the HasSuffix argument, there's no need or benefit in
having a ":" before the "racebench" variant mentioned in the message.
(The variant comes after the colon separator—it doesn't include it.)

Change-Id: Ie9948104de9449422037bf39245944255b98f1b5
Reviewed-on: https://go-review.googlesource.com/c/go/+/497735
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
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Reviewed-by: Austin Clements <austin@google.com>
2023-05-24 17:40:18 +00:00
Bryan Mills
bfdd3bf3a5 Revert "testing: only report subtest races once"
This reverts CL 494057.

Reason for revert: test is failing on -race builders.

Fixes #60393.

Change-Id: If98238a12673aec597cf69aeead7bdf4782b4524
Reviewed-on: https://go-review.googlesource.com/c/go/+/497996
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2023-05-24 17:35:45 +00:00
Michael Pratt
067dd573b2 cmd/go: fix PGO script flag matching
build_pgo.txt hard-coded a check for / rather than using ${/}, causing a
failure on Windows

The failure in build_pgo_auto_multi.txt is more interesting. If the
first argument to stdout starts with `-` the script engine expects it to
be a flag to grep, and thus doesn't regexp-escape `\` in the expansion
of `${/}`.

The script engine doesn't _require_ that these are flags to grep, so it
is still possible to use them for matching, but this ideally will change
in the future, so change all patterns to avoid starting with `-`.

Fixes #60408.

Change-Id: Ie4041a730d22ce40a4436abae7713f211dcb42e4
Reviewed-on: https://go-review.googlesource.com/c/go/+/497881
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Michael Pratt <mpratt@google.com>
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2023-05-24 17:13:42 +00:00
Robert Griesemer
42f387aae1 Revert "cmd/compile: enable printing of error URLs by default"
This reverts commit e7a9ca0a53.

Reason for revert: Decided to delay to Go 1.22.

Change-Id: I4635cb4c1372b54cac573041be8a43e294de5183
Reviewed-on: https://go-review.googlesource.com/c/go/+/497975
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Reviewed-by: Robert Griesemer <gri@google.com>
2023-05-24 16:46:45 +00:00
Michael Anthony Knyszek
0adcc5ace8 runtime: cache inner pinner on P
This change caches the *pinner on the P to pool it and reduce the chance
that a new allocation is made. It also makes the *pinner no longer drop
its refs array on unpin, also to avoid reallocating.

The Pinner benchmark results before and after this CL are attached at
the bottom of the commit message.

Note that these results are biased toward the current change because of
the last two benchmark changes. Reusing the pinner in the benchmark
itself achieves similar performance before this change. The benchmark
results thus basically just confirm that this change does cache the
inner pinner in a useful way. Using the previous benchmarks there's
actually a slight regression from the extra check in the cache, however
the long pole is still setPinned itself.

name                                old time/op    new time/op    delta
PinnerPinUnpinBatch-8                 42.2µs ± 2%    41.5µs ± 1%      ~     (p=0.056 n=5+5)
PinnerPinUnpinBatchDouble-8            367µs ± 1%     350µs ± 1%    -4.67%  (p=0.008 n=5+5)
PinnerPinUnpinBatchTiny-8              108µs ± 0%     102µs ± 1%    -6.22%  (p=0.008 n=5+5)
PinnerPinUnpin-8                       592ns ± 8%      40ns ± 1%   -93.29%  (p=0.008 n=5+5)
PinnerPinUnpinTiny-8                   693ns ± 9%      39ns ± 1%   -94.31%  (p=0.008 n=5+5)
PinnerPinUnpinDouble-8                 843ns ± 5%     124ns ± 3%   -85.24%  (p=0.008 n=5+5)
PinnerPinUnpinParallel-8              1.11µs ± 5%    0.00µs ± 0%   -99.55%  (p=0.008 n=5+5)
PinnerPinUnpinParallelTiny-8          1.12µs ± 8%    0.00µs ± 1%   -99.55%  (p=0.008 n=5+5)
PinnerPinUnpinParallelDouble-8        1.79µs ± 4%    0.58µs ± 6%   -67.36%  (p=0.008 n=5+5)
PinnerIsPinnedOnPinned-8              5.78ns ± 0%    5.80ns ± 1%      ~     (p=0.548 n=5+5)
PinnerIsPinnedOnUnpinned-8            4.99ns ± 1%    4.98ns ± 0%      ~     (p=0.841 n=5+5)
PinnerIsPinnedOnPinnedParallel-8      0.71ns ± 0%    0.71ns ± 0%      ~     (p=0.175 n=5+5)
PinnerIsPinnedOnUnpinnedParallel-8    0.67ns ± 1%    0.66ns ± 0%      ~     (p=0.167 n=5+5)

name                                old alloc/op   new alloc/op   delta
PinnerPinUnpinBatch-8                 20.1kB ± 0%    20.0kB ± 0%    -0.32%  (p=0.008 n=5+5)
PinnerPinUnpinBatchDouble-8           52.7kB ± 0%    52.7kB ± 0%    -0.12%  (p=0.008 n=5+5)
PinnerPinUnpinBatchTiny-8             20.1kB ± 0%    20.0kB ± 0%    -0.32%  (p=0.008 n=5+5)
PinnerPinUnpin-8                       64.0B ± 0%      0.0B       -100.00%  (p=0.008 n=5+5)
PinnerPinUnpinTiny-8                   64.0B ± 0%      0.0B       -100.00%  (p=0.008 n=5+5)
PinnerPinUnpinDouble-8                 64.0B ± 0%      0.0B       -100.00%  (p=0.008 n=5+5)
PinnerPinUnpinParallel-8               64.0B ± 0%      0.0B       -100.00%  (p=0.008 n=5+5)
PinnerPinUnpinParallelTiny-8           64.0B ± 0%      0.0B       -100.00%  (p=0.008 n=5+5)
PinnerPinUnpinParallelDouble-8         64.0B ± 0%      0.0B       -100.00%  (p=0.008 n=5+5)
PinnerIsPinnedOnPinned-8               0.00B          0.00B           ~     (all equal)
PinnerIsPinnedOnUnpinned-8             0.00B          0.00B           ~     (all equal)
PinnerIsPinnedOnPinnedParallel-8       0.00B          0.00B           ~     (all equal)
PinnerIsPinnedOnUnpinnedParallel-8     0.00B          0.00B           ~     (all equal)

name                                old allocs/op  new allocs/op  delta
PinnerPinUnpinBatch-8                   9.00 ± 0%      8.00 ± 0%   -11.11%  (p=0.008 n=5+5)
PinnerPinUnpinBatchDouble-8             11.0 ± 0%      10.0 ± 0%    -9.09%  (p=0.008 n=5+5)
PinnerPinUnpinBatchTiny-8               9.00 ± 0%      8.00 ± 0%   -11.11%  (p=0.008 n=5+5)
PinnerPinUnpin-8                        1.00 ± 0%      0.00       -100.00%  (p=0.008 n=5+5)
PinnerPinUnpinTiny-8                    1.00 ± 0%      0.00       -100.00%  (p=0.008 n=5+5)
PinnerPinUnpinDouble-8                  1.00 ± 0%      0.00       -100.00%  (p=0.008 n=5+5)
PinnerPinUnpinParallel-8                1.00 ± 0%      0.00       -100.00%  (p=0.008 n=5+5)
PinnerPinUnpinParallelTiny-8            1.00 ± 0%      0.00       -100.00%  (p=0.008 n=5+5)
PinnerPinUnpinParallelDouble-8          1.00 ± 0%      0.00       -100.00%  (p=0.008 n=5+5)
PinnerIsPinnedOnPinned-8                0.00           0.00           ~     (all equal)
PinnerIsPinnedOnUnpinned-8              0.00           0.00           ~     (all equal)
PinnerIsPinnedOnPinnedParallel-8        0.00           0.00           ~     (all equal)
PinnerIsPinnedOnUnpinnedParallel-8      0.00           0.00           ~     (all equal)

For #46787.

Change-Id: I0cdfad77b189c425868944a4faeff3d5b97417b9
Reviewed-on: https://go-review.googlesource.com/c/go/+/497615
Reviewed-by: Austin Clements <austin@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
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TryBot-Result: Gopher Robot <gobot@golang.org>
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2023-05-24 16:23:08 +00:00
Michael Anthony Knyszek
5d68121628 runtime: move pinned object out of inner loop for benchmarks
In theory by allocating new objects every time, the benchmark is
including the performance of allocating new pinner bits for a span. In
practice however, most of the time each span already does have pinner
bits allocated (it's still a rare operation).

We can get a better sense of the raw cost of pinning an object (minus
pinner bits allocation) by moving the object allocation out of the inner
loop.

Change-Id: I2869fa6c3f353b726fe8440d2e6b7f89902f9364
Reviewed-on: https://go-review.googlesource.com/c/go/+/497620
Auto-Submit: Michael Knyszek <mknyszek@google.com>
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2023-05-24 16:22:30 +00:00
Roland Shoemaker
ac17bb6f13 crypto/x509: properly apply name constrains to roots and intermediates
Name constraints are checked during path building. When a new
certificate is considered for inclusion in a chain we check if it has
name constraints, and if it does, check that they apply to the certs
already in the chain, discarding it if the current chain violates any
of the constraints the candidate introduces.

This check was not acting as intended in two ways. The first was that
we only checked that the constraints on the candidate certificate
applied to the leaf certificate, and not the rest of the certiifcates in
the chain. This was the intended behavior pre-1.19, but in 1.19 we
intended for the constraints to be applied to the entire chain (although
obviously they were not).

The second was that we checked that the candidates constraints applied
to the candidate itself. This is not conformant with RFC 5280, which
says that during path building the constraint should only be applied to
the certificates which follow the certificate which introduces the
constraint (e.g. in the chain A -> B -> C, if certificate Bcontains a
name constraint, the constraint should only apply to certificate C).

The intended behavior introduced in 1.19 was mainly intended to reject
dubious chains which the WebPKI disallows, and are relatively rare, but
don't have significant security impact. Since the constraints were
properly applied to the leaf certificate, there should be no real impact
to the majority of users.

Fixes #59171

Change-Id: Ie6def55b8ab7f14d6ed2c09351f664e148a4160d
Reviewed-on: https://go-review.googlesource.com/c/go/+/478216
Reviewed-by: Damien Neil <dneil@google.com>
Auto-Submit: Roland Shoemaker <roland@golang.org>
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2023-05-24 15:51:01 +00:00
Sean Liao
4042b90001 os: implement fs.ReadFileFS for DirFS
Use the os.ReadFile implementation to handle
sysfs files not reporting size properly via stat.

Fixes #53761

Change-Id: I6f34515e8a211e3659f4f6c3598fae7ec0c86975
Reviewed-on: https://go-review.googlesource.com/c/go/+/416775
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Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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2023-05-24 15:04:44 +00:00