Commit Graph

59050 Commits

Author SHA1 Message Date
Paul E. Murphy
adbf71eb98 cmd/internal/obj/ppc64: combine C_SBRA and C_LBRA optab classes
The assembler treats C_SBRA and C_LBRA optab classes identically,
combine them into one class to reduce the number of optab classes.

Likewise, C_LBRAPIC is renamed to C_BRAPIC for consistency with
the above change.

Change-Id: I47000e7273cb8f89a4d0621d71433ccbfb7afb70
Reviewed-on: https://go-review.googlesource.com/c/go/+/557916
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
Reviewed-by: David Chase <drchase@google.com>
2024-02-07 21:50:42 +00:00
Nasfame
1ffc110469 doc/next: add release note for sync/Map.Clear
Fix https://go-review.git.corp.google.com/c/go/+/561456

For #61696

Change-Id: I573bd14cf0e5c41adcc8c2b9481e85c5792c2a82
GitHub-Last-Rev: c6fce6d25f
GitHub-Pull-Request: golang/go#65534
Reviewed-on: https://go-review.googlesource.com/c/go/+/561755
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Jonathan Amsterdam <jba@google.com>
2024-02-07 21:04:18 +00:00
qmuntal
c098400548 runtime,internal/syscall/windows: remove long path support check
The runtime currently enables long path support process-wide by updating
the process environment block (PEB). It then tries to create a file
using a long path to check if the PEB update made any difference.

There hasn't been any report that the PEB update was not effective,
and the check itself is quite tricky, so it's time to remove it.

While here, linkname `runtime.canUseLongPaths` to a variable in
internal/syscall/windows instead of the os package so it is easier to
consume from other packages.

Change-Id: I549380b7f2c242dc4db20d5be603840282de69b9
Reviewed-on: https://go-review.googlesource.com/c/go/+/536495
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: David Chase <drchase@google.com>
2024-02-07 20:54:38 +00:00
qmuntal
28b8851671 os: support Stat and LStat for CON device on Windows
\\.\con and CON need to be opened with GENERIC_READ access, else
CreateFile will fail with ERROR_INVALID_PARAMETER.

Special-case ERROR_INVALID_PARAMETER in os.[L]Stat so it retries with
GENERIC_READ access.

Fixes #34900.

Change-Id: I5010e736d0189c8ada4fc0eca98d71a438c41426
Reviewed-on: https://go-review.googlesource.com/c/go/+/560755
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: David Chase <drchase@google.com>
2024-02-07 20:53:05 +00:00
Andy Pan
e55bf08d98 net: support benchmark testing for sendfile on various platforms
When I introduced the benchmark test code for sendfile(2) in CL 425878,
I only did it on Linux while the sendfile system call is also available
on other Unix-like and Windows platforms, this CL will pick up where I left out.

goos: darwin
goarch: arm64
pkg: net
BenchmarkSendFile/file-to-tcp/1024-10    	 2240488	       749.5 ns/op	1366.30 MB/s	       0 B/op	       0 allocs/op
BenchmarkSendFile/file-to-tcp/2048-10    	 1956669	       850.4 ns/op	2408.38 MB/s	       0 B/op	       0 allocs/op
BenchmarkSendFile/file-to-tcp/4096-10    	  840103	      1593 ns/op	2571.30 MB/s	       0 B/op	       0 allocs/op
BenchmarkSendFile/file-to-tcp/8192-10    	  449536	      2881 ns/op	2843.35 MB/s	       0 B/op	       0 allocs/op
BenchmarkSendFile/file-to-tcp/16384-10   	  269974	      6307 ns/op	2597.86 MB/s	       0 B/op	       0 allocs/op
BenchmarkSendFile/file-to-tcp/32768-10   	  137210	     12646 ns/op	2591.09 MB/s	       0 B/op	       0 allocs/op
BenchmarkSendFile/file-to-tcp/65536-10   	   66642	     24557 ns/op	2668.74 MB/s	       0 B/op	       0 allocs/op
BenchmarkSendFile/file-to-tcp/131072-10  	   37852	     59550 ns/op	2201.03 MB/s	       0 B/op	       0 allocs/op
BenchmarkSendFile/file-to-tcp/262144-10  	   16288	    107859 ns/op	2430.44 MB/s	       2 B/op	       0 allocs/op
BenchmarkSendFile/file-to-tcp/524288-10  	   10540	    249957 ns/op	2097.52 MB/s	       3 B/op	       0 allocs/op
BenchmarkSendFile/file-to-tcp/1048576-10 	    4982	    419750 ns/op	2498.09 MB/s	       6 B/op	       0 allocs/op
BenchmarkSendFile/file-to-unix/1024-10   	 1180185	      1187 ns/op	 862.66 MB/s	       0 B/op	       0 allocs/op
BenchmarkSendFile/file-to-unix/2048-10   	  523159	      2294 ns/op	 892.78 MB/s	       0 B/op	       0 allocs/op
BenchmarkSendFile/file-to-unix/4096-10   	  238792	      5223 ns/op	 784.29 MB/s	       0 B/op	       0 allocs/op
BenchmarkSendFile/file-to-unix/8192-10   	  116611	     10929 ns/op	 749.58 MB/s	       0 B/op	       0 allocs/op
BenchmarkSendFile/file-to-unix/16384-10  	   57568	     19870 ns/op	 824.57 MB/s	       0 B/op	       0 allocs/op
BenchmarkSendFile/file-to-unix/32768-10  	   32280	     33696 ns/op	 972.47 MB/s	       1 B/op	       0 allocs/op
BenchmarkSendFile/file-to-unix/65536-10  	   17242	     72122 ns/op	 908.69 MB/s	       1 B/op	       0 allocs/op
BenchmarkSendFile/file-to-unix/131072-10 	    8350	    159131 ns/op	 823.67 MB/s	       3 B/op	       0 allocs/op
BenchmarkSendFile/file-to-unix/262144-10 	    3872	    318000 ns/op	 824.35 MB/s	       8 B/op	       0 allocs/op
BenchmarkSendFile/file-to-unix/524288-10 	    1766	    600785 ns/op	 872.67 MB/s	      18 B/op	       0 allocs/op
BenchmarkSendFile/file-to-unix/1048576-10            993	   1138624 ns/op	 920.92 MB/s	      33 B/op	       0 allocs/op

goos: linux
goarch: amd64
pkg: net
cpu: DO-Premium-AMD
BenchmarkSendFile/file-to-tcp/1024-8             1796002               716.3 ns/op      1429.59 MB/s           0 B/op          0 allocs/op
BenchmarkSendFile/file-to-tcp/2048-8             1196700               896.6 ns/op      2284.23 MB/s           0 B/op          0 allocs/op
BenchmarkSendFile/file-to-tcp/4096-8              923604              2385 ns/op        1717.48 MB/s           0 B/op          0 allocs/op
BenchmarkSendFile/file-to-tcp/8192-8              638967              9722 ns/op         842.60 MB/s           0 B/op          0 allocs/op
BenchmarkSendFile/file-to-tcp/16384-8             357740             18710 ns/op         875.67 MB/s           0 B/op          0 allocs/op
BenchmarkSendFile/file-to-tcp/32768-8             147417             17489 ns/op        1873.66 MB/s           0 B/op          0 allocs/op
BenchmarkSendFile/file-to-tcp/65536-8             113054             58818 ns/op        1114.21 MB/s           0 B/op          0 allocs/op
BenchmarkSendFile/file-to-tcp/131072-8             57981            113202 ns/op        1157.86 MB/s           0 B/op          0 allocs/op
BenchmarkSendFile/file-to-tcp/262144-8             26362            253376 ns/op        1034.61 MB/s           0 B/op          0 allocs/op
BenchmarkSendFile/file-to-tcp/524288-8             13767            442053 ns/op        1186.03 MB/s           0 B/op          0 allocs/op
BenchmarkSendFile/file-to-tcp/1048576-8             4906            829984 ns/op        1263.37 MB/s           0 B/op          0 allocs/op
BenchmarkSendFile/file-to-unix/1024-8            2031691               628.9 ns/op      1628.36 MB/s           0 B/op          0 allocs/op
BenchmarkSendFile/file-to-unix/2048-8            1294472               965.0 ns/op      2122.30 MB/s           0 B/op          0 allocs/op
BenchmarkSendFile/file-to-unix/4096-8            1005753              1203 ns/op        3404.27 MB/s           0 B/op          0 allocs/op
BenchmarkSendFile/file-to-unix/8192-8             865448              6412 ns/op        1277.65 MB/s           0 B/op          0 allocs/op
BenchmarkSendFile/file-to-unix/16384-8            268946             12801 ns/op        1279.89 MB/s           0 B/op          0 allocs/op
BenchmarkSendFile/file-to-unix/32768-8            153398              6691 ns/op        4897.23 MB/s           0 B/op          0 allocs/op
BenchmarkSendFile/file-to-unix/65536-8             88911             11969 ns/op        5475.36 MB/s           0 B/op          0 allocs/op
BenchmarkSendFile/file-to-unix/131072-8            48639            107538 ns/op        1218.84 MB/s           0 B/op          0 allocs/op
BenchmarkSendFile/file-to-unix/262144-8            22720            203199 ns/op        1290.09 MB/s           0 B/op          0 allocs/op
BenchmarkSendFile/file-to-unix/524288-8            12034             97126 ns/op        5398.03 MB/s           0 B/op          0 allocs/op
BenchmarkSendFile/file-to-unix/1048576-8            5374            202308 ns/op        5183.06 MB/s           0 B/op          0 allocs/op

Change-Id: Ib9507bd9837ecb38b1702afa89502da18806929c
Reviewed-on: https://go-review.googlesource.com/c/go/+/543276
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-02-07 20:33:40 +00:00
Quim Muntal
6abeffb18e Revert "runtime: make netpollBreak entries identifiable on Windows"
This reverts commit 29746b4814.

Reason for revert: Windows builders are flaky since this CL. Needs investigation. See https://build.golang.org/log/70d5d039b57b505870c9cc4e61de320df06a6f3a.

Change-Id: I8a5874bb057785497d03b9450819578de7faeb47
Reviewed-on: https://go-review.googlesource.com/c/go/+/561276
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-02-07 20:08:01 +00:00
David Chase
6d498ce844 doc: move Go 1.22 release notes to x/website
Now that the development of the Go 1.22 release is almost done, its
release notes are moved to their eventual long-term home in x/website
in CL 562195. Delete the initial development copy here.

Change-Id: Ic8e44ee5d95ff121f96a53f6093fd8764abea004
Reviewed-on: https://go-review.googlesource.com/c/go/+/562155
Auto-Submit: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
2024-02-07 17:50:49 +00:00
Robert Griesemer
77c9188471 spec: fix typo in year (it's 2024 now)
While at it, set the date to the Go 1.22 release date.

Change-Id: I03872626e500433eb63786d24c67810c8c6289f4
Reviewed-on: https://go-review.googlesource.com/c/go/+/562337
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Bypass: Robert Griesemer <gri@google.com>
2024-02-07 17:18:54 +00:00
Robert Griesemer
7020beeffd go/types, types2: optimize Named type method lookup
Because methods associated with named types are in the
same package as the type, when looking up a method we
don't need to check the package repeatedly.

Rename the global lookupMethod function to methodIndex,
to match the corresponding fieldIndex function (cleanup).

Implement Named.methodIndex, optimized for method lookup
on named types (optimization).

Adjust call sites.

Change-Id: Ifa05306126773262b1af3ce73365b5742b470eb6
Reviewed-on: https://go-review.googlesource.com/c/go/+/562297
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Robert Griesemer <gri@google.com>
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Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
2024-02-07 17:03:59 +00:00
Robert Griesemer
f81e498673 go/types, types2: better errors for non-existing fields or methods
This CL improves the error messages reported when a field or method
name is used that doesn't exist. It brings the error messges on par
(or better) with the respective errors reported before Go 1.18 (i.e.
before switching to the new type checker):

Make case distinctions based on whether a field/method is exported
and how it is spelled. Factor out that logic into a new function
(lookupError) in a new file (errsupport.go), which is generated for
go/types. Use lookupError when reporting selector lookup errors
and missing struct field keys.

Add a comprehensive set of tests (lookup2.go) and spot tests for
the two cases brought up by the issue at hand.

Adjusted existing tests as needed.

Fixes #49736.

Change-Id: I2f439948dcd12f9bd1a258367862d8ff96e32305
Reviewed-on: https://go-review.googlesource.com/c/go/+/560055
Run-TryBot: Robert Griesemer <gri@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
2024-02-07 16:41:56 +00:00
Bryan C. Mills
39ec246e73 cmd/go: avoid copying a binary to be exec'd in TestScript/gotoolchain_path
Runinng 'go build' writes the binary in a separate process, so avoids
the race described in #22315. However, the script engine's 'cp'
command currently executes in-process, so it does not avoid that bug
and may retain stale file descriptors when running tests in parallel.

Avoid the race in this particular test by giving the final binary
location in the '-o' argument instead of copying it there after the
fact.

Fixes #64019.

Change-Id: I96d276f33c09e39f465e9877356f1d8f2ae55062
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest,gotip-windows-amd64-longtest
Reviewed-on: https://go-review.googlesource.com/c/go/+/560415
Auto-Submit: Bryan Mills <bcmills@google.com>
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Reviewed-by: Michael Matloob <matloob@golang.org>
2024-02-06 22:21:42 +00:00
Michael Pratt
c18ddc84e1 cmd/compile: add missing colon in debug log
Change-Id: Id76f4688a2ac45c1616d5c03274eec5d2108e555
Reviewed-on: https://go-review.googlesource.com/c/go/+/562156
Auto-Submit: Michael Pratt <mpratt@google.com>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
2024-02-06 21:03:43 +00:00
Than McIntosh
4b0e086348 dog/go1.22: tweak coverage testing notes
Clarify the section in the "go" command notes that deals with the
changes to "go test -cover" for packages without tests, adding a note
that if a package has not tests and no executable code, you still get
a "package has no test files" diagnostic.

Fixes #65262.

Change-Id: Ie960871f9d5c1a1965090738644eace28fc3e156
Reviewed-on: https://go-review.googlesource.com/c/go/+/561337
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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Reviewed-by: Chris Hines <chris.cs.guy@gmail.com>
2024-02-06 15:59:53 +00:00
Jonathan Amsterdam
6f44cc88f5 archive/zip: reduce memory held by Writer.Copy
Make a copy of the argument File's FileHeader, and pass a pointer
to the copy to CreateRaw.

Passing the pointer directly causes the entire `File` to be referenced
by the receiver. The `File` includes a reference to the `ReaderAt`
underlying the `Reader`, so all its memory, which may be the entire
contents of the archive, is prevented from being garbage-collected.

Also, explain the issue in the doc comment for CreateRaw. We
cannot change its behavior because someone may depend on the
preserving the identity of its argument pointer.

For #65499.

Change-Id: Ieb4963a0ea30539d597547d3511accbd8c6b5c5a
Reviewed-on: https://go-review.googlesource.com/c/go/+/560238
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Damien Neil <dneil@google.com>
2024-02-06 12:43:52 +00:00
Jun10ng
6076edc55c cmd/compile: delete unused code and fix typo in comment
Change-Id: Ia1f1c7d5563a74950c47cf3ebdcb600b34c83e85
GitHub-Last-Rev: bd58214e5e
GitHub-Pull-Request: golang/go#65527
Reviewed-on: https://go-review.googlesource.com/c/go/+/561355
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
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2024-02-05 20:59:15 +00:00
Jonathan Amsterdam
b39ec942d8 doc/next: add release note file for api/next file
Change-Id: I3003968d9d7e543c25d4b0ab1d1cd924a1efd3ec
Reviewed-on: https://go-review.googlesource.com/c/go/+/561456
Auto-Submit: Jonathan Amsterdam <jba@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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2024-02-05 19:05:03 +00:00
Robert Griesemer
2c6f24c825 go/types, types2: bail early if we want a type but don't have one
If we do know whether we need a type or not, make use of the
information when we know that we don't have a type and bail out.

Fixes the issue at hand and also improves some other error messages
which now report that we don't have a type instead of reporting a cycle.

For #65344.

Change-Id: I11182efd452c485d89e6c09ead8a647ea05d7318
Reviewed-on: https://go-review.googlesource.com/c/go/+/559335
Run-TryBot: Robert Griesemer <gri@google.com>
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Reviewed-by: Robert Griesemer <gri@google.com>
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Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
2024-02-05 18:13:11 +00:00
Rob Findley
10a65649a3 go/types, types2: ensure that Alias.actual is set in NewAlias
Types returned by the go/types API must be immutable (or at least
concurrency safe), but NewAlias returned an alias without actual set.

Ensure that actual is set by unaliasing. Also make some superficial
simplifications to unalias, and avoid indirection where unnecessary.

Fixes golang/go#65455

Change-Id: Ic9a020da5accf9032056a924b65c9e9e08cb2e0a
Reviewed-on: https://go-review.googlesource.com/c/go/+/560915
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Reviewed-by: Robert Griesemer <gri@google.com>
2024-02-05 17:28:36 +00:00
Michael Pratt
468f56b10a cmd/compile: consistently use s.pp in genssa
In genssa, s.pp == pp, so using either is equivalent, but use is
inconsistent. About half of the uses use s.pp and the other half use pp.

This gets confusing, especially when two different uses are right next
to each other, because it implies that these might be different.

Pick one and use it consistently.

Change-Id: Ifb1bb9332138d8cb62a45c212fcd7139f8511901
Reviewed-on: https://go-review.googlesource.com/c/go/+/560780
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-02-05 16:43:45 +00:00
Jonathan Amsterdam
d3fd7ee580 cmd/relnote: fix API relnote check
Fix the check for release note files that correspond to API files
to look in the right directory, doc/next/*stdlib/*minor. Previously
the test looked in doc/next.

Improve the error messages when the test fails to explain the problem
better and refer to further documentation.

(These changes are actually in the x/build repo; this CL vendors
the latest version.)

Lastly, re-enable the check.

For #64169.

Change-Id: I8bba845e9bd12afbe269ce42d6d4b17b1e3c0252
Reviewed-on: https://go-review.googlesource.com/c/go/+/560516
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
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2024-02-05 16:31:53 +00:00
Mauri de Souza Meneguzzo
76ff0caa59 runtime/internal/atomic: add loong64 operators for And/Or
These primitives will be used by the new And/Or sync/atomic apis.

For #61395

Change-Id: I64b2e599e4f91412e0342aa01f5fd53271e9a333
GitHub-Last-Rev: 9755db5406
GitHub-Pull-Request: golang/go#63314
Reviewed-on: https://go-review.googlesource.com/c/go/+/531895
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
TryBot-Result: Gopher Robot <gobot@golang.org>
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Run-TryBot: Mauri de Souza Meneguzzo <mauri870@gmail.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
2024-02-05 15:30:09 +00:00
Bryan C. Mills
e8d87728bd cmd/go: fix tests that fail when running a cross-compiled GOARCH
In CL 356611 I changed cmd/go to run most of its tests (instead of
skipping them all) when cross-compiled, such as with GOARCH=386 on an
amd64 host. Unfortunately, since we don't have a CI builder that runs
long tests in a cross-compiled configuration, some of the tests have
rotted since then.

This fixes 'GOARCH=386 go test cmd/go' on my workstation.

For #64963.
Updates #53936.

Change-Id: If7f4bc8e8d1ace7d36010d7a1b652fc7b2ceb276
Cq-Include-Trybots: luci.golang.try:gotip-linux-386-longtest,gotip-windows-amd64-longtest
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2024-02-05 14:52:04 +00:00
Ian Lance Taylor
b8ac61e6e6 go/internal/gccgoimporter: recognize "any" as a builtin type
In CL 536715 we're changing the gofrontend export data to report
"any" as a builtin type. This permits us to distinguish the builtin
type from some other package-level type "any". That requires an update
to this code.

Change-Id: I91d75a056a155fa9892c4b25ab396cb4d39cc8e4
Reviewed-on: https://go-review.googlesource.com/c/go/+/537195
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: David Chase <drchase@google.com>
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2024-02-02 23:14:07 +00:00
Michael Pratt
9819d8265f cmd/compile: avoid reading entire PGO profile just to check the header
isPreProfileFile reads the entire file into memory just to check the
first few bytes, and then throws it all away. We can avoid this by just
peeking at the beginning.

For #58102.

Change-Id: Id2c2844e5e44a2f3a9c7cdb9a027d94d26bdf71d
Reviewed-on: https://go-review.googlesource.com/c/go/+/560035
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2024-02-02 22:08:32 +00:00
Michael Pratt
3d20a327a1 runtime: initialize crashFD to -1
crashFD defaults to the zero value of (surprise!) zero. Zero is a valid
FD, so on the first call to SetCrashOutput we actually close FD 0 since
it is a "valid" FD.

Initialize crashFD to -1, the sentinel for "no FD".

Change-Id: I3b108c60603f2b83b867cbe079f035c159b6a6ca
Reviewed-on: https://go-review.googlesource.com/c/go/+/560776
Reviewed-by: Alan Donovan <adonovan@google.com>
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2024-02-02 18:35:18 +00:00
Dmitri Shuralyov
6b0309ceb6 lib/time: update to 2024a/2024a
Commit generated by update.bash.

For #22487.

Change-Id: I1c46ec1f3a84e385f8eab2c4c9a14d3513a85a44
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest
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2024-02-02 18:20:41 +00:00
Alan Donovan
f0a862ee4d runtime/debug: add Example of SetCrashOutput in a crash monitor
Updates #42888

Change-Id: I72e408301e17b1579bbea189bed6b1a0154bd55f
Reviewed-on: https://go-review.googlesource.com/c/go/+/548121
Reviewed-by: Michael Pratt <mpratt@google.com>
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2024-02-02 17:16:21 +00:00
cui fliter
3b83560baf cmd/compile/internal: fix function names
Change-Id: Id9103aa4bda221f5eb34a0ede8676364c574b696
Reviewed-on: https://go-review.googlesource.com/c/go/+/560616
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2024-02-02 17:06:30 +00:00
cui fliter
149db960e4 cmd/link/internal/dwtest: fix inconsistent receiver name
The DIEs method of Examiner is the only one with a receiver declared 'e'; all the rest have 'ex'. Fix it to be consistent.

Change-Id: I494a53cf3db5575d45831cab3cf612c20962f8fe
Reviewed-on: https://go-review.googlesource.com/c/go/+/554575
Reviewed-by: Than McIntosh <thanm@google.com>
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2024-02-02 15:22:18 +00:00
Quim Muntal
244ccf4769 Revert "cmd/go: add telemetry counters for flag names and subcommand"
This reverts CL 559519.

Reason for revert: Broke windows/386. See https://build.golang.org/log/03594b706c425bd61fb3c65495aae6dd01b4a81b.

Fixes #65447.

Change-Id: I567bca0368168dbfb256fadba37bce3cd31aceb2
Reviewed-on: https://go-review.googlesource.com/c/go/+/560655
Reviewed-by: Bryan Mills <bcmills@google.com>
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2024-02-02 15:13:27 +00:00
Michael Matloob
117164f9e3 cmd/go: add telemetry counters for flag names and subcommand
For #58894

Change-Id: I6b5d5b14be9858f5855eeac0110aa44e762cee03
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest
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2024-02-01 22:59:31 +00:00
Michael Matloob
6d3c1ce885 cmd: update golang.org/x/telemetry to 1cb064e and vendor it
This brings in CL 559505 which adds a stub for counter.CountFlags so
it can be depended on and still build on Go 1.18 and earlier. This
will allow the go command to use counter.CountFlags and still be able
to build as the bootstrap command with an earlier version of Go.

For #58894

Change-Id: I31d5b96bd47eef2e407ef97e6146adece403f2c0
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2024-02-01 22:57:03 +00:00
Ehden Sinai
ac08c05d4d cmd/go: fix build config before creating actions for 'go list -cover'
When -covermode is set to atomic, instrumented packages need to import
sync/atomic. If this is not already imported by a package being
instrumented, the build needs to ensure that sync/atomic is compiled
whenever 'go list' is run in a way that triggers package builds.

The build config was already being made to ensure the import, but only
after the action graph had been created, so there was no guarantee that
sync/atomic would be built when needed.

Fixes #65264.

Change-Id: Ib3f1e102ce2ef554ea08330d9db69a8c98790ac5
Reviewed-on: https://go-review.googlesource.com/c/go/+/560236
Run-TryBot: Bryan Mills <bcmills@google.com>
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2024-02-01 22:47:28 +00:00
Michael Anthony Knyszek
c9d88ea2aa runtime: traceAcquire and traceRelease across all P steals
Currently there are a few places where a P can get stolen where the
runtime doesn't traceAcquire and traceRelease across the steal itself.
What can happen then is the following scenario:
- Thread 1 enters a syscall and writes an event about it.
- Thread 2 steals Thread 1's P.
- Thread 1 exits the syscall and writes one or more events about it.
- Tracing ends (trace.gen is set to 0).
- Thread 2 checks to see if it should write an event for the P it just
  stole, sees that tracing is disabled, and doesn't.

This results in broken traces, because there's a missing ProcSteal
event. The parser always waits for a ProcSteal to advance a
GoSyscallEndBlocked event, and in this case, it never comes.

Fixes #65181.

Change-Id: I437629499bb7669bf7fe2fc6fc4f64c53002916b
Reviewed-on: https://go-review.googlesource.com/c/go/+/560235
Reviewed-by: Michael Pratt <mpratt@google.com>
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2024-02-01 21:42:55 +00:00
Michael Anthony Knyszek
829f2ce3ba runtime: clear trace map without write barriers
Currently the trace map is cleared with an assignment, but this ends up
invoking write barriers. Theoretically, write barriers could try to
write a trace event and eventually try to acquire the same lock. The
static lock ranking expresses this constraint.

This change replaces the assignment with a call to memclrNoHeapPointer
to clear the map, removing the write barriers.

Note that technically this problem is purely theoretical. The way the
trace maps are used today is such that reset is only ever called when
the tracer is no longer writing events that could emit data into a map.
Furthermore, reset is never called from an event-writing context.

Therefore another way to resolve this is to simply not hold the trace
map lock over the reset operation. However, this makes the trace map
implementation less robust because it needs to be used in a very
specific way. Furthermore, the rest of the trace map code avoids write
barriers already since its internal structures are all notinheap, so
it's actually more consistent to just avoid write barriers in the reset
method.

Fixes #56554.

Change-Id: Icd86472e75e25161b2c10c1c8aaae2c2fed4f67f
Reviewed-on: https://go-review.googlesource.com/c/go/+/560216
Reviewed-by: Michael Pratt <mpratt@google.com>
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2024-02-01 21:02:42 +00:00
Michael Anthony Knyszek
0b12e3d81c runtime: model wakeableSleep.lock in the race detector
Currently the flight recorder tests are failing in race mode because the
race detector doesn't see s.lock, leading to false positives. This has
also appeared in the trace tests. Model the lock in the race detector.

Fixes #65207.
Fixes #65283.

Change-Id: I1e9a5c9606536f55fdfc46b5f8443e9c7213c23d
Reviewed-on: https://go-review.googlesource.com/c/go/+/560215
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Reviewed-by: Michael Pratt <mpratt@google.com>
2024-02-01 21:02:36 +00:00
Michael Anthony Knyszek
287f791845 runtime: fix trace EvGoStop Gosched reason to match function
Currently the stop reason for runtime.Gosched is labeled
"runtime.GoSched" which doesn't actually match the function name. Fix
the label to match the function name.

This change doesn't regenerate the internal/trace/v2 tests, because
regenerating the tests breaks summarization tests in internal/trace that
rely on very specific details in the example traces that aren't
guaranteed. Also, go122-gc-trace.test isn't generated at all, as it
turns out. I'll fix this all up in a follow-up CL. For now, just replace
runtime.GoSched with runtime.Gosched in the traces so we don't have a
problem later if a test wants to look for that string.

This change does regenerate the cmd/trace/v2 test, but it turns out the
cmd/trace/v2 tests are way too strict about network unblock events, and
3 usually pop up instead of 1 or 2, which is what the test expects.
AFAICT this looks plausible to me, so just lift the restriction on
"up to 2" events entirely.

Change-Id: Id7350132be19119c743c259f2f5250903bf41a04
Reviewed-on: https://go-review.googlesource.com/c/go/+/552275
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2024-02-01 21:02:30 +00:00
Bryan C. Mills
d864eac249 cmd/go: limit GOMAXPROCS in TestScript/test_fuzz_.*
This limits the throughput and resource consumption of the fuzz
workers in the tests, which also reduces the likelihood of running out
of address space in the fuzz coordinator during the test.

(Ideally the coordinator should not be limited by address space;
this just works around the failure mode in the tests for now.)

For #65434.

Change-Id: I3086c6278d6803a3dbf17a46ed01b68cedc92ad9
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2024-02-01 20:09:52 +00:00
Jes Cok
3b0d39c5da sync: update doc for Map.Clear
Change-Id: I9bcc5c82321cbc93f1c7aafd1dadf4f6b862ccbd
GitHub-Last-Rev: 818b95528f
GitHub-Pull-Request: golang/go#65429
Reviewed-on: https://go-review.googlesource.com/c/go/+/560396
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2024-02-01 19:34:02 +00:00
qmuntal
29746b4814 runtime: make netpollBreak entries identifiable on Windows
It is currently not possible to distinguish between a netpollBreak
entry and an entry initiated by external WSA operations (as in #58870).

This CL sets a unique completion key when posting the
netpollBreak entry so that it can be identified as such.

Change-Id: I8e74a7ddc607dc215d6ed8c59d5c3cf47ec8dc62
Reviewed-on: https://go-review.googlesource.com/c/go/+/558895
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2024-02-01 19:29:37 +00:00
Michael Pratt
18840865d2 Revert "runtime: preempt more aggressively when panicking"
This reverts CL 546135.

Reason for revert: Causes occasional throw during panic

For #65416.

Change-Id: I78c15637da18f85ede785363b777aa7d1dead3c3
Reviewed-on: https://go-review.googlesource.com/c/go/+/560455
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2024-02-01 18:09:36 +00:00
Hiro
5b6cd3d0cb sync: add Map.Clear
Fixes #61696

Change-Id: I0a31afd3bc433fc84280d56f2798bda10da61eba
GitHub-Last-Rev: 17bedc864f
GitHub-Pull-Request: golang/go#61702
Reviewed-on: https://go-review.googlesource.com/c/go/+/515015
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2024-02-01 15:34:22 +00:00
Michael Pratt
2f6a25f447 internal/profile: remove legacy profile support
internal/profile.Parse is only used in two places: cmd/compile for
parsing PGO profiles, and net/http/pprof for parsing runtime/pprof
profiles for delta profiles. Neither case ever encounters legacy
profiles, so we can remove support entirely from the package.

Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest

Change-Id: Ic5f85b3fc1e1367131b6039dac9378913cbf9f2c
Reviewed-on: https://go-review.googlesource.com/c/go/+/548035
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2024-01-31 23:21:53 +00:00
Jin Lin
e069587c8d cmd/preprofile: Implement a tool to preprocess the PGO profile.
It fixes the issue https://github.com/golang/go/issues/65220.
It also includes  https://go.dev/cl/557458 from Michael.

Change-Id: Ic6109e1b6a9045459ff4a54dea11cbfe732b01e6
Reviewed-on: https://go-review.googlesource.com/c/go/+/557918
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2024-01-31 22:40:25 +00:00
Dmitri Shuralyov
5c0d0929d3 doc/go1.22: move go/version package mention into a separate heading
It's a new package in the standard library,
not a minor change to an existing package.

For #62039.
For #61422.

Change-Id: I7488304cd2bd6353f535cab192d015796840ba4e
Reviewed-on: https://go-review.googlesource.com/c/go/+/559799
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2024-01-31 20:51:56 +00:00
codesoap
6120688146 container/heap: remove confusing claim of memory leak
The term "memory leak" was misused here, as the memory is still referenced
by the slice.

Fixes #65403

Change-Id: Id102419d4c798fb2a4ec8be86be9ec9b5cdd98e6
GitHub-Last-Rev: 3febcd0ba4
GitHub-Pull-Request: golang/go#65404
Reviewed-on: https://go-review.googlesource.com/c/go/+/559775
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2024-01-31 20:27:36 +00:00
Robert Griesemer
a5fb65601e go/token: correct out-of-bounds token offsets and positions
Per the discussion on the issue, make methods that depend on
incoming offsets or positions tolerant in the presence of
out-of-bounds values by adjusting the values as needed.

Add an internal flag debug that can be set to enable the old
(not fault-tolerant) behavior.

Fixes #57490.

Change-Id: I8a7d422b9fd1d6f0980fd4e64da2f0489056d71e
Reviewed-on: https://go-review.googlesource.com/c/go/+/559436
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2024-01-31 20:26:14 +00:00
Russ Cox
79738217d5 go/version: fix package to accept go1.21.0-bigcorp
The proposal discussion made clear that suffixes should be accepted,
so that people who use custom VERSION files can still pass runtime.Version()
to this code. But we forgot to do that in the CL. Do that.

Note that cmd/go also strips space- and tab-prefixed suffixes,
but go.dev/doc/toolchain only mentions dash, so this code only
strips dash.

Fixes #65061.

Change-Id: I6a427b78f964eb41c024890dae30223beaef13eb
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2024-01-31 19:56:48 +00:00
Jonathan Amsterdam
600225f83f api/README: refer to doc/README.md
For #64169.

Change-Id: I0fc6d6a041ad48957f4aecd18b85c9098fc9b403
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2024-01-31 19:22:50 +00:00
Alan Donovan
1bb947b2eb runtime/debug: SetCrashOutput sets the FD for fatal panics
This feature makes it possible to record unhandled panics
in any goroutine through a watchdog process (e.g. the same
application forked+exec'd as a child in a special mode)
that can process the panic report, for example by sending
it to a crash-reporting system such as Go telemetry
or Sentry.

Fixes #42888

Change-Id: I5aa7be8f726bbc70fc650540bd1a14ab60c62ecb
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2024-01-31 16:50:42 +00:00