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Commit Graph

58317 Commits

Author SHA1 Message Date
Russ Cox
d6c1ef52ad math/rand/v2: remove Read
In math/rand, Read is deprecated. Remove in v2.
People should use crypto/rand if they need long strings.

For #61716.

Change-Id: Ib254b7e1844616e96db60a3a7abb572b0dcb1583
Reviewed-on: https://go-review.googlesource.com/c/go/+/502497
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Russ Cox <rsc@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2023-10-30 14:30:14 +00:00
Russ Cox
d42750b17c math/rand/v2: rename various functions
Int31 -> Int32
Int31n -> Int32N
Int63 -> Int64
Int63n -> Int64N
Intn -> IntN

The 31 and 63 are pedantic and confusing: the functions should
be named for the type they return, same as all the others.

The lower-case n is inconsistent with Go's usual CamelCase
and especially problematic because we plan to add 'func N'.
Capitalize the n.

For #61716.

Change-Id: Idb1a005a82f353677450d47fb612ade7a41fde69
Reviewed-on: https://go-review.googlesource.com/c/go/+/516857
Auto-Submit: Russ Cox <rsc@golang.org>
Reviewed-by: Robert Griesemer <gri@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2023-10-30 14:29:37 +00:00
Russ Cox
59f0ab4036 math/rand/v2: start of new API
This is the beginning of the math/rand/v2 package from proposal #61716.
Start by copying old API. This CL copies math/rand/* to math/rand/v2
and updates references to math/rand to add v2 throughout.
Later CLs will make the v2 changes.

For #61716.

Change-Id: I1624ccffae3dfa442d4ba2461942decbd076e11b
Reviewed-on: https://go-review.googlesource.com/c/go/+/502495
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Russ Cox <rsc@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2023-10-30 14:29:30 +00:00
Cherry Mui
8c92897e15 cmd/compile: rework TestPGOHash to not rebuild dependencies
TestPGOHash may rebuild dependencies as we pass -trimpath to the
go command. This CL makes it pass -trimpath compiler flag to only
the current package instead, as we only need the current package
to have a stable source file path.

Also refactor buildPGOInliningTest to only take compiler flags,
not go flags, to avoid accidental rebuild.

Should fix #63733.

Change-Id: Iec6c4e90cf659790e21083ee2e697f518234c5b9
Reviewed-on: https://go-review.googlesource.com/c/go/+/535915
Reviewed-by: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
2023-10-27 17:54:18 +00:00
Cherry Mui
5613882df7 internal/testenv: use cmd.Environ in CleanCmdEnv
In CleanCmdEnv, use cmd.Environ instead of os.Environ, so it
sets the PWD environment variable if cmd.Dir is set. This ensures
the child process sees a canonical path for its working directory.

Change-Id: Ia769552a488dc909eaf6bb7d21937adba06d1072
Reviewed-on: https://go-review.googlesource.com/c/go/+/538215
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
2023-10-27 17:53:23 +00:00
Jes Cok
b46aec0765 bytes,internal/bytealg: eliminate HashStrBytes,HashStrRevBytes using …
…generics

The logic of HashStrBytes, HashStrRevBytes and HashStr, HashStrRev,
are exactly the same, except that the types are different.

Since the bootstrap toolchain is bumped to 1.20, we can eliminate them
by using generics.

Change-Id: I4336b1cab494ba963f09646c169b45f6b1ee62e3
GitHub-Last-Rev: b11a2bf947
GitHub-Pull-Request: golang/go#63766
Reviewed-on: https://go-review.googlesource.com/c/go/+/538175
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Keith Randall <khr@golang.org>
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2023-10-27 15:55:16 +00:00
Cherry Mui
0262ea1ff9 runtime: print a stack trace at "morestack on g0"
Error like "morestack on g0" is one of the errors that is very
hard to debug, because often it doesn't print a useful stack trace.
The runtime doesn't directly print a stack trace because it is
a bad stack state to call print. Sometimes the SIGABRT may trigger
a traceback, but sometimes not especially in a cgo binary. Even if
it triggers a traceback it often does not include the stack trace
of the bad stack.

This CL makes it explicitly print a stack trace and throw. The
idea is to have some space as an "emergency" crash stack. When the
stack is in a really bad state, we switch to the crash stack and
do a traceback.

Currently only implemented on AMD64 and ARM64.

TODO: also handle errors like "morestack on gsignal" and bad
systemstack. Also handle other architectures.

Change-Id: Ibfc397202f2bb0737c5cbe99f2763de83301c1c1
Reviewed-on: https://go-review.googlesource.com/c/go/+/419435
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
2023-10-26 18:46:50 +00:00
Alexander Yastrebov
29b80397a8 crypto/subtle: use PCALIGN in xorBytes
goos: linux
goarch: amd64
pkg: crypto/subtle
cpu: Intel(R) Core(TM) i5-8350U CPU @ 1.70GHz
                      │   master    │                HEAD                 │
                      │   sec/op    │   sec/op     vs base                │
XORBytes/8Bytes-8       10.90n ± 1%   10.96n ± 5%        ~ (p=0.617 n=10)
XORBytes/128Bytes-8     14.85n ± 2%   12.05n ± 2%  -18.82% (p=0.000 n=10)
XORBytes/2048Bytes-8    88.30n ± 2%   72.64n ± 1%  -17.73% (p=0.000 n=10)
XORBytes/32768Bytes-8   1.489µ ± 2%   1.442µ ± 1%   -3.12% (p=0.000 n=10)
geomean                 67.91n        60.99n       -10.19%

                      │    master    │                 HEAD                 │
                      │     B/s      │     B/s       vs base                │
XORBytes/8Bytes-8       700.5Mi ± 1%   696.5Mi ± 5%        ~ (p=0.631 n=10)
XORBytes/128Bytes-8     8.026Gi ± 2%   9.890Gi ± 2%  +23.22% (p=0.000 n=10)
XORBytes/2048Bytes-8    21.60Gi ± 2%   26.26Gi ± 1%  +21.55% (p=0.000 n=10)
XORBytes/32768Bytes-8   20.50Gi ± 2%   21.16Gi ± 1%   +3.21% (p=0.000 n=10)
geomean                 7.022Gi        7.819Gi       +11.34%

For #63678

Change-Id: I3996873773748a6f78acc6575e70e09bb6aea979
GitHub-Last-Rev: d9129cb8ea
GitHub-Pull-Request: golang/go#63754
Reviewed-on: https://go-review.googlesource.com/c/go/+/537856
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
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2023-10-26 18:14:32 +00:00
Dmitri Shuralyov
7546c79e91 cmd: update vendored golang.org/x/mod
Pull in CL 500335. It teaches modfile.IsDirectoryPath to recognize all
relative paths that begin with a "." or ".." path element as a valid
directory path (rather than a module path). This allows removing the
path == "." check that CL 389298 added to modload.ToDirectoryPath.

go get golang.org/x/mod@6e58e47c  # CL 500335
go mod tidy
go mod vendor

Updates #51448.
Fixes #60572.

Change-Id: Ide99c728c8dac8fd238e13f6d6a0c3917d7aea2d
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest
Reviewed-on: https://go-review.googlesource.com/c/go/+/500355
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Reviewed-by: Bryan Mills <bcmills@google.com>
2023-10-26 17:53:40 +00:00
Mauri de Souza Meneguzzo
0046c1414c net/http: pull http2 underflow fix from x/net/http2
After CL 534295 was merged to fix a CVE it introduced
an underflow when we try to decrement sc.curHandlers
in handlerDone.

Pull in a fix from x/net/http2:
http2: fix underflow in http2 server push
https://go-review.googlesource.com/c/net/+/535595

Fixes #63511

Change-Id: I5c678ce7dcc53635f3ad5e4999857cb120dfc1ab
GitHub-Last-Rev: 587ffa3caf
GitHub-Pull-Request: golang/go#63561
Reviewed-on: https://go-review.googlesource.com/c/go/+/535575
Run-TryBot: Mauri de Souza Meneguzzo <mauri870@gmail.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: David Chase <drchase@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
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2023-10-26 15:35:15 +00:00
Michael Pratt
1af424c196 runtime: clear g0 stack bounds in dropm
After CL 527715, needm uses callbackUpdateSystemStack to set the stack
bounds for g0 on an M from the extra M list. Since
callbackUpdateSystemStack is also used for recursive cgocallback, it
does nothing if the stack is already in bounds.

Currently, the stack bounds in an extra M may contain stale bounds from
a previous thread that used this M and then returned it to the extra
list in dropm.

Typically a new thread will not have an overlapping stack with an old
thread, but because the old thread has exited there is a small chance
that the C memory allocator will allocate the new thread's stack
partially or fully overlapping with the old thread's stack.

If this occurs, then callbackUpdateSystemStack will not update the stack
bounds. If in addition, the overlap is partial such that SP on
cgocallback is close to the recorded stack lower bound, then Go may
quickly "overflow" the stack and crash with "morestack on g0".

Fix this by clearing the stack bounds in dropm, which ensures that
callbackUpdateSystemStack will unconditionally update the bounds in
needm.

For #62440.

Change-Id: Ic9e2052c2090dd679ed716d1a23a86d66cbcada7
Reviewed-on: https://go-review.googlesource.com/c/go/+/537695
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Michael Pratt <mpratt@google.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
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2023-10-26 15:17:33 +00:00
Daniel Martí
5fe2035927 internal/profile: actually return errors in postDecode
As spotted by staticcheck, the body did keep track of errors by sharing
a single err variable, but its last value was never used as the function
simply finished by returning nil.

To prevent postDecode from erroring on empty profiles,
which breaks TestEmptyProfile, add a check at the top of the function.

Update the runtime/pprof test accordingly,
since the default units didn't make sense for an empty profile anyway.

Change-Id: I188cd8337434adf9169651ab5c914731b8b20f39
Reviewed-on: https://go-review.googlesource.com/c/go/+/483137
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2023-10-26 07:37:45 +00:00
Mauri de Souza Meneguzzo
555af99bcc runtime/internal/atomic: add riscv64 operators for And/Or
These primitives will be used by the new And/Or sync/atomic apis.

For #61395

Change-Id: I4062d6317e01afd94d3588f5425237723ab15ade
GitHub-Last-Rev: c0a8d8f34d
GitHub-Pull-Request: golang/go#63272
Reviewed-on: https://go-review.googlesource.com/c/go/+/531575
Reviewed-by: Than McIntosh <thanm@google.com>
Run-TryBot: Mauri de Souza Meneguzzo <mauri870@gmail.com>
Reviewed-by: Mark Ryan <markdryan@rivosinc.com>
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Reviewed-by: Joel Sing <joel@sing.id.au>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
2023-10-25 21:32:01 +00:00
Bryan C. Mills
e7908ab9a2 cmd/go: allow suffixed toolchains to satisfy toolchain lines for the same base version
Fixes #63357.

Change-Id: I8380cf0d3965d6aef84a91a515d3e0e8aae9344b
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest,gotip-windows-amd64-longtest
Reviewed-on: https://go-review.googlesource.com/c/go/+/535355
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Auto-Submit: Bryan Mills <bcmills@google.com>
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Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
2023-10-25 21:19:11 +00:00
Bryan C. Mills
55b8e16b2e testing: use monotonic counts to attribute races in subtests
This implements the approach I described in
https://go-review.git.corp.google.com/c/go/+/494057/1#message-5c9773bded2f89b4058848cb036b860aa6716de3.

Specifically:

- Each level of test atomically records the cumulative number of races
  seen as of the last race-induced test failure.

- When a subtest fails, it logs the race error, and then updates its
  parents' counters so that they will not log the same error.

- We check each test or benchmark for races before it starts running
  each of its subtests or sub-benchmark, before unblocking parallel
  subtests, and after running any cleanup functions.

With this implementation, it should be the case that every test that
is running when a race is detected reports that race, and any race
reported for a subtest is not redundantly reported for its parent.

The regression tests are based on those added in CL 494057 and
CL 501895, with a few additions based on my own review of the code.

Fixes #60083.

Change-Id: I578ae929f192a7a951b31b17ecb560cbbf1ef7a1
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest,gotip-linux-amd64-longtest-race,gotip-windows-amd64-longtest
Reviewed-on: https://go-review.googlesource.com/c/go/+/506300
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
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2023-10-25 20:44:25 +00:00
Tobias Klauser
a57c5736c5 cmd/go: remove unused (*testgoData).acquireNet test helper
It's unused since CL 518775.

Change-Id: Ic889f0cf1555a8503d0c2b3fb232854609d72764
Reviewed-on: https://go-review.googlesource.com/c/go/+/537597
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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2023-10-25 19:47:04 +00:00
Tobias Klauser
9f84df7f01 cmd/go: remove unused (*testgoData).mustHaveContent test helper
It's unused since CL 214382.

Change-Id: I83a860938f87a7c4d2bdb966689c17ba29066639
Reviewed-on: https://go-review.googlesource.com/c/go/+/537596
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: David Chase <drchase@google.com>
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2023-10-25 19:46:53 +00:00
Tobias Klauser
37788b8b9e cmd/go: remove unused (*testgoData).runGit test helper
It's unused since CL 518775.

Change-Id: I81a4865d0c656ca2b968d51e52388c88e661a157
Reviewed-on: https://go-review.googlesource.com/c/go/+/537595
Reviewed-by: Bryan Mills <bcmills@google.com>
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2023-10-25 19:46:46 +00:00
Ian Lance Taylor
57322b3cbf debug/elf: return error in DynString for invalid dynamic section size
No test case because the problem can only happen for invalid data.
Let the fuzzer find cases like this.

Fixes #63610

Change-Id: I797b4d9bdb08286ad3e3a9a6f800ee8c90cb7261
Reviewed-on: https://go-review.googlesource.com/c/go/+/536400
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com>
2023-10-25 19:25:38 +00:00
Rhys Hiltner
9cdcb01320 runtime/pprof: include labels for caller of goroutine profile
The goroutine profile has close to three code paths for adding a
goroutine record to the goroutine profile: one for the goroutine that
requested the profile, one for every other goroutine, plus some special
handling for the finalizer goroutine. The first of those captured the
goroutine stack, but neglected to include that goroutine's labels.

Update the tests to check for the inclusion of labels for all three
types of goroutines, and include labels for the creator of the goroutine
profile.

For #63712

Change-Id: Id5387a5f536d3c37268c240e0b6db3d329a3d632
Reviewed-on: https://go-review.googlesource.com/c/go/+/537515
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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2023-10-25 17:37:34 +00:00
Tobias Klauser
884c93a6df cmd/compile/internal/typecheck: use strings.Contains
Change-Id: I439268e91288f9a5a0946ac428731cdfa4d111cb
Reviewed-on: https://go-review.googlesource.com/c/go/+/533135
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2023-10-25 17:37:01 +00:00
Michael Stapelberg
067f28ad73 Revert "crypto/internal/boring: use noescape and nocallback cgo directives"
This reverts CL 525035.

Reason for revert: breaks many Google-internal tests (#63739), suspected miscompilation

Change-Id: I8cbebca0a187d12e16c405b2373c754e4a397ef4
Reviewed-on: https://go-review.googlesource.com/c/go/+/537598
Reviewed-by: Bryan Mills <bcmills@google.com>
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2023-10-25 15:27:49 +00:00
qiulaidongfeng
b5f87b5407 runtime: use max/min func
Change-Id: I3f0b7209621b39cee69566a5cc95e4343b4f1f20
GitHub-Last-Rev: af9dbbe69a
GitHub-Pull-Request: golang/go#63321
Reviewed-on: https://go-review.googlesource.com/c/go/+/531916
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2023-10-24 20:28:25 +00:00
Keith Randall
9ab5121691 cmd/compile: use new runtime type mechanism for type switches and asserts
Change-Id: Ife7d6d6d773ac0d8ac38dbd2da7dccc519998b63
Reviewed-on: https://go-review.googlesource.com/c/go/+/534816
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2023-10-24 20:26:01 +00:00
Keith Randall
2d9e8ded94 cmd/compile: reorganize compiler type descriptor generation
Use the new rttype mechanism to share internal/abi types between
the compiler and runtime.

Change-Id: I2bbba4d8090c6f7ff20dca15b7b665f5d04e5bfd
Reviewed-on: https://go-review.googlesource.com/c/go/+/534936
Reviewed-by: David Chase <drchase@google.com>
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2023-10-24 20:24:47 +00:00
Michael Pratt
9162c4be9c cmd/compile/internal/ir: update CallExpr comment reference
CL 532795 changed CallExpr.X to CallExpr.Fun.

Change-Id: Ib2079e239a85daa4a3f5b5165c2cddc76a648b5e
Reviewed-on: https://go-review.googlesource.com/c/go/+/537175
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2023-10-24 18:12:46 +00:00
Mauri de Souza Meneguzzo
25ad137cf4 runtime/internal/atomic: add memory barrier for mips Cas on failure
Add a memory barrier on the failure case of the
compare-and-swap for mips, this avoids potential
race conditions.

For #63506

Change-Id: I3df1479d1438ba72aa72567eb3dea76ff745e98d
GitHub-Last-Rev: 2101b9fd44
GitHub-Pull-Request: golang/go#63604
Reviewed-on: https://go-review.googlesource.com/c/go/+/536116
Auto-Submit: Keith Randall <khr@golang.org>
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2023-10-24 17:49:25 +00:00
Nakul Bajaj
983d90e11d testing/slogtest: test no source key with empty PC in record
Fixes #62280

Change-Id: Ideaffb797d8bb9cc70e635f0b019ae3cb90abc92
Reviewed-on: https://go-review.googlesource.com/c/go/+/536117
Reviewed-by: Bryan Mills <bcmills@google.com>
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Reviewed-by: Jonathan Amsterdam <jba@google.com>
2023-10-24 15:06:07 +00:00
Alan Donovan
6f87db509a go/types: fix (*T)(nil)-to-interface conversion bug
A nil *gcSizes pointer should be converted to a nil Sizes interface.

Updates #63701

Change-Id: I62e00fecf303ce0ae529f1a75c14c7ef2576a58f
Reviewed-on: https://go-review.googlesource.com/c/go/+/537255
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Robert Findley <rfindley@google.com>
2023-10-24 13:47:39 +00:00
cui fliter
f09db2bb93 log: add available godoc link
Change-Id: I80f1377631163cc5843379c36ca10b82fccd5709
Reviewed-on: https://go-review.googlesource.com/c/go/+/535086
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Jonathan Amsterdam <jba@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2023-10-23 22:56:07 +00:00
Keiichi Hirobe
f9c54f9cd4 net/http: remove outdated comment about a support of CONNECT method
The net/http.Transport already supports CONNECT after
https://go-review.googlesource.com/c/go/+/123156 was merged, which
deleted comments in transport.go.

Change-Id: I784fdb9b044bc8a4a29bf252328c80a11aaf6901
Reviewed-on: https://go-review.googlesource.com/c/go/+/536057
Auto-Submit: Damien Neil <dneil@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Damien Neil <dneil@google.com>
2023-10-23 20:47:30 +00:00
qmuntal
e46e8610ab crypto/internal/boring: use noescape and nocallback cgo directives
The new noescape and nocallback directives can be used instead of the C
wrapper functions that are there just to avoid some parameters being
escaped to the heap.

This CL also helps demonstrate the use of the new directives in real
code.

I've added some benchmarks to demonstrate that this CL doesn't
introduce new heap allocations when using boringcrypto:

```
goos: linux
goarch: amd64
pkg: crypto/aes
cpu: AMD EPYC 7763 64-Core Processor
BenchmarkGCMSeal-32    	 8378692	       143.3 ns/op	 111.65 MB/s	       0 B/op	       0 allocs/op
BenchmarkGCMOpen-32    	 8383038	       142.7 ns/op	 112.11 MB/s	       0 B/op	       0 allocs/op
```

Change-Id: Ifd775484eb9a105afc5c3d4e75a6c6655cbadc53
Reviewed-on: https://go-review.googlesource.com/c/go/+/525035
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
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Reviewed-by: Roland Shoemaker <roland@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2023-10-23 19:41:39 +00:00
Andy Pan
c65f74d339 net,internal/poll: mark it as handled even if sendfile(2) succeeded with 0 bytes sent
CL 415834 fixed #53658 and somehow it only fixed it on Linux,
sendfile can also succeed with 0 bytes sent on other platforms
according to their manuals, this CL will finish the work that
CL 415834 left out on other platforms.

goos: darwin
goarch: arm64
pkg: net
                     │     old     │                new                 │
                     │   sec/op    │   sec/op     vs base               │
SendfileZeroBytes-10   7.563µ ± 5%   7.184µ ± 6%  -5.01% (p=0.009 n=10)

                     │     old     │                new                 │
                     │    B/op     │    B/op     vs base                │
SendfileZeroBytes-10   3562.5 ± 7%   590.0 ± 2%  -83.44% (p=0.000 n=10)

                     │    old    │             new              │
                     │ allocs/op │ allocs/op   vs base          │
SendfileZeroBytes-10   0.00 ± 0%   11.00 ± 0%  ? (p=0.000 n=10)

[1] https://man.freebsd.org/cgi/man.cgi?sendfile(2)
[2] https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/sendfile.2.html
[3] https://man.dragonflybsd.org/?command=sendfile&section=2
[4] https://docs.oracle.com/cd/E88353_01/html/E37843/sendfile-3c.html

Change-Id: I55832487595ee8e0f44f367cf2a3a1d827ba590d
Reviewed-on: https://go-review.googlesource.com/c/go/+/536455
Auto-Submit: Bryan Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
2023-10-23 18:44:26 +00:00
Cuong Manh Le
255ed03a94 runtime: allow for 10 more threads in TestWindowsStackMemory*
CL 473415 allowed 5 more threads in TestWindowsStackMemory, to cover
sysmon and any new threads in future. However, during go1.22 dev cycle,
the test becomes flaky again, failing in windows-386 builder a couple of
times in CL 535975 and CL 536175 (and maybe others that haven't caught).

This CL increases the extra threads from 5 to 10, hopefully to make the
test stable again for windows-386. The theory is that Go process load a
bunch of DLLs, which may start their own threads. We could investigate
more deeply if the test still be flaky with 10 extra threads.

Fixes #58570

Change-Id: I255d0d31ed554859a5046fa76dfae1ba89a89aa3
Reviewed-on: https://go-review.googlesource.com/c/go/+/536058
Reviewed-by: Benny Siegert <bsiegert@gmail.com>
Reviewed-by: Quim Muntal <quimmuntal@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
2023-10-23 17:31:31 +00:00
Andy Pan
1f3f851a6e runtime: ignore ETIMEDOUT for kevent conservatively
Fixes #59679

Change-Id: I1334b793825a2a57d239e3c98373bf4c93cc622a
Reviewed-on: https://go-review.googlesource.com/c/go/+/522215
Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Michael Pratt <mpratt@google.com>
Run-TryBot: Andy Pan <panjf2000@gmail.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
2023-10-23 17:31:23 +00:00
favonia
bc2124dab1 bufio: allow terminating Scanner early cleanly without a final token or an error
Fixes #56381

Change-Id: I95cd603831a7032d764ab312869fe9fb05848a4b
Reviewed-on: https://go-review.googlesource.com/c/go/+/498117
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Benny Siegert <bsiegert@gmail.com>
2023-10-23 09:06:30 +00:00
Olivier Mengué
6ba6e72e39 database/sql: add godoc links
Add godoc links in database/sql and database/sql/driver.

Change-Id: I96ed79645a7cc656f5d23450ba3cfe005b04b31a
Reviewed-on: https://go-review.googlesource.com/c/go/+/486815
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Benny Siegert <bsiegert@gmail.com>
2023-10-23 09:04:12 +00:00
Mateusz Poliwczak
95974b379f net: set IsNotFound on windows and plan9 DNS queries
Change-Id: I2a12acb3e4f31dd561d49f47a3b1ae3ac47ab894
GitHub-Last-Rev: 4733964f69
GitHub-Pull-Request: golang/go#63542
Reviewed-on: https://go-review.googlesource.com/c/go/+/534937
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Benny Siegert <bsiegert@gmail.com>
Run-TryBot: Mateusz Poliwczak <mpoliwczak34@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Quim Muntal <quimmuntal@gmail.com>
2023-10-23 09:03:09 +00:00
Roland Shoemaker
3839447ac3 doc: add missing space in godebug.md
Change-Id: I941b6397e2f09a4abb30c0caf91cc2ff2212a445
Reviewed-on: https://go-review.googlesource.com/c/go/+/536675
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Roland Shoemaker <roland@golang.org>
2023-10-21 03:03:54 +00:00
Paul E. Murphy
566d94fe69 cmd/internal/obj/ppc64: refactor maskgen
Refactor maskgen into decodeMask32. This is derived from
from combining encodePPC64RotateMask and isWordRotateMask.

Also, truncate me returned from decodeMask32/64 to
be within range of [0,32/64).

Change-Id: Ie9efff93d400b3066ac85276b1ad3c57c2fcf31b
Reviewed-on: https://go-review.googlesource.com/c/go/+/536298
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
Run-TryBot: Paul Murphy <murp@ibm.com>
Reviewed-by: Than McIntosh <thanm@google.com>
2023-10-20 19:23:58 +00:00
Roland Shoemaker
693def151a crypto/rand,runtime: switch RtlGenRandom for ProcessPrng
RtlGenRandom is a semi-undocumented API, also known as
SystemFunction036, which we use to generate random data on Windows.
It's definition, in cryptbase.dll, is an opaque wrapper for the
documented API ProcessPrng. Instead of using RtlGenRandom, switch to
using ProcessPrng, since the former is simply a wrapper for the latter,
there should be no practical change on the user side, other than a minor
change in the DLLs we load.

Change-Id: Ie6891bf97b1d47f5368cccbe92f374dba2c2672a
Reviewed-on: https://go-review.googlesource.com/c/go/+/536235
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Quim Muntal <quimmuntal@gmail.com>
Auto-Submit: Roland Shoemaker <roland@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
2023-10-20 18:35:47 +00:00
F Y
3de6033d0e syscall: stop counting trailing NUL for abstract addresses starting with NUL
Changes trailing-NUL-counting behavior for abstract addresses
starting with the NUL character to be the same as abstract
addresses starting with the @ character.

For #63579.

Change-Id: I206e4d0d808396998cb7d92a9e26dda854cb1248
GitHub-Last-Rev: 0ff0a9c938
GitHub-Pull-Request: golang/go#63580
Reviewed-on: https://go-review.googlesource.com/c/go/+/535776
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Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-10-20 18:13:19 +00:00
Quan Tong
c75a617af0 cmd/go/internal/work: set Incomplete to true if there is an error
Fixes #57724

Change-Id: I3d419985ff41d5ee93bb56d8c7ca5cd1d7231920
Reviewed-on: https://go-review.googlesource.com/c/go/+/536418
Auto-Submit: Bryan Mills <bcmills@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
2023-10-20 17:54:46 +00:00
Ian Lance Taylor
2968f5623c test: add tests that gofrontend failed
I will shortly be sending CLs to let the gofrontend code pass
these tests.

Change-Id: I53ccbdac3ac224a4fdc9577270f48136ca73a62c
Reviewed-on: https://go-review.googlesource.com/c/go/+/536537
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-10-20 03:00:06 +00:00
Guoqi Chen
3754ca0af2 cmd/compile: improve the implementation of Lowered{Move,Zero} on linux/loong64
Like the CL 487295, when implementing Lowered{Move,Zero}, 8 is first subtracted
from Rarg0 (parameter Ptr), and then the offset of 8 is added during subsequent
operations on Rarg0. This operation is meaningless, so delete it.

Change LoweredMove's Rarg0 register to R20, consistent with duffcopy.

goos: linux
goarch: loong64
pkg: runtime
cpu: Loongson-3C5000 @ 2200.00MHz
                              │  old.bench  │             new.bench               │
                              │    sec/op   │   sec/op     vs base                │
Memmove/15                      19.10n ± 0%   19.10n ± 0%        ~ (p=0.483 n=15)
MemmoveUnalignedDst/15          25.02n ± 0%   25.02n ± 0%        ~ (p=0.741 n=15)
MemmoveUnalignedDst/32          48.22n ± 0%   48.22n ± 0%        ~ (p=1.000 n=15) ¹
MemmoveUnalignedDst/64          90.57n ± 0%   90.52n ± 0%        ~ (p=0.212 n=15)
MemmoveUnalignedDstOverlap/32   44.12n ± 0%   44.13n ± 0%   +0.02% (p=0.000 n=15)
MemmoveUnalignedDstOverlap/64   87.79n ± 0%   87.80n ± 0%   +0.01% (p=0.002 n=15)
MemmoveUnalignedSrc/0           3.639n ± 0%   3.639n ± 0%        ~ (p=1.000 n=15) ¹
MemmoveUnalignedSrc/1           7.733n ± 0%   7.733n ± 0%        ~ (p=1.000 n=15)
MemmoveUnalignedSrc/2           9.097n ± 0%   9.097n ± 0%        ~ (p=1.000 n=15)
MemmoveUnalignedSrc/3           10.46n ± 0%   10.46n ± 0%        ~ (p=1.000 n=15) ¹
MemmoveUnalignedSrc/4           11.83n ± 0%   11.83n ± 0%        ~ (p=1.000 n=15) ¹
MemmoveUnalignedSrc/64          93.71n ± 0%   93.70n ± 0%        ~ (p=0.128 n=15)
Memclr/4096                     699.1n ± 0%   699.1n ± 0%        ~ (p=0.682 n=15)
Memclr/65536                    11.18µ ± 0%   11.18µ ± 0%   -0.01% (p=0.000 n=15)
Memclr/1M                       175.2µ ± 0%   175.2µ ± 0%        ~ (p=0.191 n=15)
Memclr/4M                       661.8µ ± 0%   662.0µ ± 0%        ~ (p=0.486 n=15)
MemclrUnaligned/4_5             19.39n ± 0%   20.47n ± 0%   +5.57% (p=0.000 n=15)
MemclrUnaligned/4_16            22.29n ± 0%   21.38n ± 0%   -4.08% (p=0.000 n=15)
MemclrUnaligned/4_64            30.58n ± 0%   29.81n ± 0%   -2.52% (p=0.000 n=15)
MemclrUnaligned/4_65536         11.19µ ± 0%   11.20µ ± 0%   +0.02% (p=0.000 n=15)
GoMemclr/5                      12.73n ± 0%   12.73n ± 0%        ~ (p=0.261 n=15)
GoMemclr/16                     10.01n ± 0%   10.00n ± 0%        ~ (p=0.264 n=15)
GoMemclr/256                    50.94n ± 0%   50.94n ± 0%        ~ (p=0.372 n=15)
ClearFat15                      14.95n ± 0%   15.01n ± 4%        ~ (p=0.925 n=15)
ClearFat1032                    125.5n ± 0%   125.6n ± 0%   +0.08% (p=0.000 n=15)
CopyFat64                       10.58n ± 0%   10.01n ± 0%   -5.39% (p=0.000 n=15)
CopyFat1040                     244.3n ± 0%   155.6n ± 0%  -36.31% (p=0.000 n=15)
Issue18740/2byte                29.82µ ± 0%   29.82µ ± 0%        ~ (p=0.648 n=30)
Issue18740/4byte                18.18µ ± 0%   18.18µ ± 0%   -0.02% (p=0.001 n=30)
Issue18740/8byte                8.395µ ± 0%   8.395µ ± 0%        ~ (p=0.401 n=30)
geomean                         154.5n        151.8n        -1.70%
¹ all samples are equal

Change-Id: Ia3f3c8b25e1e93c97ab72328651de78ca9dec016
Reviewed-on: https://go-review.googlesource.com/c/go/+/488515
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: WANG Xuerui <git@xen0n.name>
Reviewed-by: xiaodong liu <teaofmoli@gmail.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Meidan Li <limeidan@loongson.cn>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2023-10-20 00:01:44 +00:00
Dmitri Shuralyov
c729dc187a all: update vendored dependencies
One of the remaining uses of the old +build syntax was in the bundled
copy of golang.org/x/net/http2 in net/http. Pull in a newer version of
bundle with CL 536075 that drops said +build syntax line. Also pull in
newer x/sys and other golang.org/x modules where old +build lines were
recently dropped.

Generated with:

go install golang.org/x/build/cmd/updatestd@latest
go install golang.org/x/tools/cmd/bundle@latest
updatestd -goroot=$(pwd) -branch=master

For #36905.
For #41184.
For #60268.

Change-Id: Ia18d1ce9eadce85b38176058ad1fe38562b004e9
Cq-Include-Trybots: luci.golang.try:gotip-linux-386-longtest,gotip-linux-amd64-longtest,gotip-windows-amd64-longtest
Reviewed-on: https://go-review.googlesource.com/c/go/+/536575
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-10-19 23:33:33 +00:00
Dmitri Shuralyov
da2d7e92ca misc: drop old +build lines
This is all there was outside of the src and test top-level directories.

Change-Id: Id29b1c92cab7087681f89504e861a47dc30ba834
Reviewed-on: https://go-review.googlesource.com/c/go/+/536238
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2023-10-19 23:33:30 +00:00
Dmitri Shuralyov
bf97e724b5 all: drop old +build lines
Running 'go fix' on the cmd+std packages handled much of this change.

Also update code generators to use only the new go:build lines,
not the old +build ones.

For #41184.
For #60268.

Change-Id: If35532abe3012e7357b02c79d5992ff5ac37ca23
Cq-Include-Trybots: luci.golang.try:gotip-linux-386-longtest,gotip-linux-amd64-longtest,gotip-windows-amd64-longtest
Reviewed-on: https://go-review.googlesource.com/c/go/+/536237
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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2023-10-19 23:33:27 +00:00
Dmitri Shuralyov
b2fd76ab8d test: migrate remaining files to go:build syntax
Most of the test cases in the test directory use the new go:build syntax
already. Convert the rest. In general, try to place the build constraint
line below the test directive comment in more places.

For #41184.
For #60268.

Change-Id: I11c41a0642a8a26dc2eda1406da908645bbc005b
Cq-Include-Trybots: luci.golang.try:gotip-linux-386-longtest,gotip-linux-amd64-longtest,gotip-windows-amd64-longtest
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Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
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2023-10-19 23:33:25 +00:00
Austin Clements
ff6dd7125e cmd/go: move all Shell methods to shell.go
This is a pure code movement change.

Now that we've introduced a Shell type that lives in shell.go, move
all of its methods (which used to be on Builder) to shell.go as well.

Change-Id: Ie1802353c8a64590219b08893e8c74649228e5e5
Reviewed-on: https://go-review.googlesource.com/c/go/+/536536
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Austin Clements <austin@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
2023-10-19 19:10:23 +00:00