Optimize Time.GoString by avoiding multiple calls to absDate.
name old time/op new time/op delta
GoString-8 313ns ± 2% 197ns ± 1% -37.08% (p=0.008 n=5+5)
name old alloc/op new alloc/op delta
GoString-8 80.0B ± 0% 80.0B ± 0% ~ (all equal)
name old allocs/op new allocs/op delta
GoString-8 1.00 ± 0% 1.00 ± 0% ~ (all equal)
Fixes#54436
Change-Id: I8e6f8e7bbb9857b4bc0cdf6ed29a6b2415775db7
Reviewed-on: https://go-review.googlesource.com/c/go/+/423634
Run-TryBot: Joseph Tsai <joetsai@digital-static.net>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Joseph Tsai <joetsai@digital-static.net>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Run-TryBot: Ian Lance Taylor <iant@google.com>
Brings freebsd/amd64 on par with other OSes/archs.
Updates #53479
Change-Id: I05164c887d776dd4a0ae51eafd4014042b782999
Reviewed-on: https://go-review.googlesource.com/c/go/+/413366
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
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Reviewed-by: Michael Pratt <mpratt@google.com>
Following proposal discussion in #38687, add go generate -skip
to allow easier skipping of specific //go:generate directives.
Fixes#38687.
Change-Id: Ied5b4042965dd6a2b93c1c517045fccae2d95c3f
Reviewed-on: https://go-review.googlesource.com/c/go/+/421440
Auto-Submit: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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Brings freebsd/386 on par with other OSes/archs.
Updates #53479
Change-Id: I16a7d051233e06e589b19919e68f07b6bf92f73c
Reviewed-on: https://go-review.googlesource.com/c/go/+/413365
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Run-TryBot: Ian Lance Taylor <iant@google.com>
The existing implementation has an execution time higher in the benchmark than this one.
This is an optimized implementation using the copy() function and a constant 256 bytes string with the values to be copied.
```
name old time/op new time/op delta
NewEncoding-4 329ns ± 1% 231ns ± 1% -29.72% (p=0.008 n=5+5)
name old speed new speed delta
NewEncoding-4 778MB/s ± 1% 1108MB/s ± 1% +42.29% (p=0.008 n=5+5)
```
Fixes#53211
Change-Id: I80fe62aa40623125ef81ae9164a8405eed30b71b
GitHub-Last-Rev: 55dce6f636
GitHub-Pull-Request: golang/go#53212
Reviewed-on: https://go-review.googlesource.com/c/go/+/410194
Reviewed-by: Keith Randall <khr@google.com>
Run-TryBot: Keith Randall <khr@google.com>
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No test case because the problem can only happen for invalid data.
Let the fuzzer find cases like this.
For #47653Fixes#52526
Change-Id: Id90a5e391a4f684f45f8d7e32608eb03b8081076
Reviewed-on: https://go-review.googlesource.com/c/go/+/413875
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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Don't allocate slices that are too large; choose a smaller capacity
and build the slice using append. Use this in debug/macho to avoid
over-allocating if a fat header is incorrect.
No debug/macho test case because the problem can only happen for
invalid data. Let the fuzzer find cases like this.
For #47653Fixes#52523
Change-Id: I372c9cdbdda8626a3225e79d713650beb350ebc7
Reviewed-on: https://go-review.googlesource.com/c/go/+/413874
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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Change-Id: Id492ee4e614a38880a6a5830371dcd9a8b37129a
Reviewed-on: https://go-review.googlesource.com/c/go/+/422214
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Joseph Tsai <joetsai@digital-static.net>
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Run-TryBot: hopehook <hopehook@qq.com>
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Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: hopehook <hopehook@qq.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
For #47653Fixes#53189
Change-Id: If35b968fc53e4c96b18964cfb020cdc003b881bf
Reviewed-on: https://go-review.googlesource.com/c/go/+/412014
Reviewed-by: Ian Lance Taylor <iant@google.com>
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Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
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As CL 422214 did, this CL intends to clean up the rest
unreachable "Continue" after Fatal.
Change-Id: I3b7e1b59bdfccb185e20525ce113e241d277dad3
Reviewed-on: https://go-review.googlesource.com/c/go/+/422514
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
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[This is a retry of CL 407036 + its revert CL 422394. The only
content change is the 1-line change in cmd/internal/obj/objfile.go.]
Read the bitmaps one uintptr at a time instead of one byte at a time.
Performance so far:
Allocation heavy, no retention: ~30% faster in heapBitsSetType
Scan heavy, ~no allocation: ~even in scanobject
Change-Id: I04d899e1dbd23e989e9f552cdc1880318779c14c
Reviewed-on: https://go-review.googlesource.com/c/go/+/422635
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[this is a retry of CL 407035 + its revert CL 422395. The content is unchanged]
Use just 1 bit per word to record the ptr/nonptr bitmap.
Use word-sized operations to manipulate the bitmap, so we can operate
on up to 64 ptr/nonptr bits at a time.
Use a separate bitmap, one bit per word of the ptr/nonptr bitmap,
to encode a no-more-pointers signal. Since we can check 64 ptr/nonptr
bits at once, knowing the exact last pointer location is not necessary.
As a followon CL, we should make the gcdata bitmap an array of
uintptr instead of an array of byte, so we can load 64 bits of it at once.
Similarly for the processing of gc programs.
Change-Id: Ica5eb622f5b87e647be64f471d67b02732ef8be6
Reviewed-on: https://go-review.googlesource.com/c/go/+/422634
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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Add a new Rewrite hook to ReverseProxy, superseding the Director hook.
Director does not distinguish between the inbound and outbound request,
which makes it possible for headers added by Director to be inadvertently
removed before forwarding if they are listed in the inbound request's
Connection header. Rewrite accepts a value containing the inbound
and outbound requests, with hop-by-hop headers already removed from
the outbound request, avoiding this problem.
ReverseProxy's appends the client IP to the inbound X-Forwarded-For
header by default. Users must manually delete untrusted X-Forwarded-For
values. When used with a Rewrite hook, ReverseProxy now strips
X-Forwarded-* headers by default.
NewSingleHostReverseProxy creates a proxy that does not rewrite the
Host header of inbound requests. Changing this behavior is
cumbersome, as it requires wrapping the Director function created
by NewSingleHostReverseProxy. The Rewrite hook's ProxyRequest
parameter provides a SetURL method that provides equivalent
functionality to NewSingleHostReverseProxy, rewrites the Host
header by default, and can be more easily extended with additional
customizations.
Fixes#28168.
Fixes#50580.
Fixes#53002.
Change-Id: Ib84e2fdd1d52c610e3887af66f517d4a74e594d0
Reviewed-on: https://go-review.googlesource.com/c/go/+/407214
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
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(But still not when -buildvcs=auto, the default.)
Fixes#52648.
Change-Id: I87a87d4ea84e8bf9635a4f7c8674c9311c3e21be
Reviewed-on: https://go-review.googlesource.com/c/go/+/409177
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The design of FileSet encourages it to be used as a global variable.
Each call to AddFile consumes about 3KB, that is never returned,
even after an application no longer cares about the File.
This change adds a RemoveFile method that a long-running application
can use to release a File that is no longer needed, saving memory.
Fixesgolang/go#53200
Change-Id: Ifd34d650fe0d18b1395f922a4cd02a535afbe560
Reviewed-on: https://go-review.googlesource.com/c/go/+/410114
Auto-Submit: Alan Donovan <adonovan@google.com>
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Reviewed-by: Robert Griesemer <gri@google.com>
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Reviewed-by: Robert Findley <rfindley@google.com>
This test was apparently mistakenly removed without a replacement in
CL 213223, but its testdata was left in the tree. This change removes
the orphaned testdata subdirectory, and restores the test that
previously used that data as a self-contained script.
For #27494.
Change-Id: Ice81895a44c558aaab198b8ef7ec046d92f5d58f
Reviewed-on: https://go-review.googlesource.com/c/go/+/417658
Auto-Submit: Bryan Mills <bcmills@google.com>
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As far as I can determine, this is the only existing non-script test
that relies on vcs-test.golang.org. I am attempting to eliminate the
vcs-test server, and to keep configuration straightforward I would
like to only set up its replacement for script tests.
For #27494.
Change-Id: Ib978228b9c3f403af5f1c445e08942cbe7915b62
Reviewed-on: https://go-review.googlesource.com/c/go/+/418103
Reviewed-by: Ian Lance Taylor <iant@google.com>
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$ cd $GOROOT/src/testing
$ go test
root
root
root
root
PASS
$
The root prints have been happening since Go 1.14.
There is a test in sub_test.go that calls b.Run directly
with a benchmark named "root", which triggers the print.
Silence them.
Change-Id: I2f0c186f04c6139bc24fab0e91975fcf0a8e80fc
Reviewed-on: https://go-review.googlesource.com/c/go/+/421437
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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Now that syscall.Mmap is defined on solaris (see CL 413374), use it in
mmapFile like on other Unix ports.
For #52875
Change-Id: Ic5c5a84da8613f0c6dc947a52b7fcca50af43d79
Reviewed-on: https://go-review.googlesource.com/c/go/+/413375
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
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WithContext makes a shallow copy of a Request, and Clone makes a
deep copy. Both set the context of the new request. The distinction
between the two is clear, and it doesn't seem useful or necessary
to say that "it's rare to need WithContext".
Also update a couple locations that mention WithContext to mention
Clone as well.
Fixes#53413.
Change-Id: I89e6ddebd7d5ca6573e522fe48cd7f50cc645cdd
Reviewed-on: https://go-review.googlesource.com/c/go/+/412778
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
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When accessing (*Checker).implements from types.AssignableTo or
types.ComparableTo, we don't need to build error strings -- they won't
be used.
This string manipulation showed up as a hot spot in gopls completion,
which checks a lot of type predicates when searching for candidate
completions.
This CL yields the following results for gopls' completion benchmarks:
StructCompletion-8 24.7ms ±34% 26.0ms ±17% ~ (p=0.447 n=10+9)
ImportCompletion-8 1.41ms ± 2% 1.45ms ± 4% +2.42% (p=0.027 n=8+9)
SliceCompletion-8 27.0ms ±18% 25.2ms ± 3% -6.67% (p=0.008 n=9+8)
FuncDeepCompletion-8 57.6ms ± 4% 22.4ms ± 4% -61.18% (p=0.000 n=8+9)
CompletionFollowingEdit-8 157ms ±13% 103ms ±15% -34.70% (p=0.000 n=10+10)
Notably, deep completion (which searches many candidates) is almost 3x
faster after this change.
Fixes#54172
Change-Id: If8303a411aed3a20bd91f7b61e346d703084166c
Reviewed-on: https://go-review.googlesource.com/c/go/+/423360
Run-TryBot: Robert Findley <rfindley@google.com>
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The new Clone function returns a copy of b[:len(b)]
for the input byte slice b.
The result may have additional unused capacity.
Clone(nil) returns nil.
Fixes#45038
Change-Id: I0469a202d77a7b491f1341c08915d07ddd1f0300
Reviewed-on: https://go-review.googlesource.com/c/go/+/359675
Run-TryBot: Martin Möhrmann <martin@golang.org>
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So far was only documented in doc/diagnostics.
Fixes: #54183
Change-Id: Iab67a1500547f30325453c614a2f2f6621dfadb3
Reviewed-on: https://go-review.googlesource.com/c/go/+/423275
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Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
The value of Expires is only checked when a value is set.
This fixes the bug that a cookie with a zero-valued Expire
was considered invalid, even though Expires is an optional
field.
Fixes#52989
Change-Id: I206c50e9b6ea2744a92c74673d589ce2aaa62670
Reviewed-on: https://go-review.googlesource.com/c/go/+/407654
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The length of slice hashedsyms is always 0, because it's not used after defined
Change-Id: Iba8e263aedfa403d5688678a1b37c2be3119eb7f
GitHub-Last-Rev: c236c4a482
GitHub-Pull-Request: golang/go#53450
Reviewed-on: https://go-review.googlesource.com/c/go/+/413234
Run-TryBot: Keith Randall <khr@golang.org>
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Use the helper added by CL 422038 instead of manually detecting the
noopt builder.
Change-Id: I353f1a9d5f0184d73869520eb1ae8d0bdbbe2006
Reviewed-on: https://go-review.googlesource.com/c/go/+/423855
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A few lingering references to Go 1.4 remain.
Fix them, and document the ones that should stay.
For #44505.
Fixes#54301.
Change-Id: Ieb9c0f08e4d1890ea3fdfd9c8df5493934ae7493
Reviewed-on: https://go-review.googlesource.com/c/go/+/423354
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Change-Id: Ie169c226e8973c8b504412cc0ac1f14abcdfdb1c
Reviewed-on: https://go-review.googlesource.com/c/go/+/423755
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
CL 414836 limited the check for implicit dot for method call enabled by
a type bound. However, the checking condition for ODOTMETH only is not
right. For example, for promoted method, we have a OXDOT node instead,
and we still have to check for implicit dot in this case.
However, if the base type and embedded types have the same method name,
e.g in issue #53419, typecheck.AddImplicitDots will be confused and
result in an ambigus selector.
To fix this, we ensure methods for the base type are computed, then only
do the implicit dot check if we can find a matched method.
Fixes#54348
Change-Id: Iefe84ff330830afe35c5daffd499824db108da23
Reviewed-on: https://go-review.googlesource.com/c/go/+/422274
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This saves 11,000 allocations when loading the standard library
in golang.org/x/tools/go/ssa form.
Change-Id: I8aa32b0641c1a3dde29e6ee76c760006035dd56d
Reviewed-on: https://go-review.googlesource.com/c/go/+/423934
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This CL make math.sqrt an intrinsic function, math.Sqrt is not affected
since compiler can inline it. With this change, we can remove all assembly
code for math.Sqrt that aims to speed up indirect call. The go compiler can
generate same or faster code (with regabi) for indirect call.
Benchmark on amd64:
name old time/op new time/op delta
SqrtIndirect 2.60ns ± 3% 1.03ns ± 4% -60.24% (p=0.000 n=10+10)
SqrtLatency 3.40ns ± 1% 3.32ns ± 1% -2.26% (p=0.000 n=10+8)
SqrtIndirectLatency 6.09ns ± 0% 3.31ns ± 0% -45.67% (p=0.000 n=10+10)
SqrtGoLatency 36.1ns ± 6% 34.6ns ± 1% ~ (p=0.101 n=10+10)
SqrtPrime 2.53µs ± 2% 2.55µs ± 6% ~ (p=0.398 n=9+9)
Change-Id: If4be0f242c1d9d4feca7d269fc9cd6e6066f163d
Reviewed-on: https://go-review.googlesource.com/c/go/+/421074
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addresses proposal #53084
required by sha-256 change list developed for #50543
Change-Id: I5454d746fce069a7a4993d70dc5b0a5544f8eeaf
Reviewed-on: https://go-review.googlesource.com/c/go/+/408794
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Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Run-TryBot: Keith Randall <khr@google.com>
Due to the latest binutils change [1], at least for certain 32-bit
relocs in .eh_frame section, this new type of relocation record is
emitted, leading to breakage on systems with bleeding-edge toolchain
when trying to link with object(s) with such new-style relocs.
Simply treating it the same as the existing reloc types seems enough.
Fixes#54222
[1]: https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=f09482a8747b6fd4c2d59a6a64677d3a3fe1e092
Change-Id: I876d6711d5d4a674bead37e57f9503f1622d1136
Reviewed-on: https://go-review.googlesource.com/c/go/+/420983
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Single quotes don't account for whitespace in this context, which causes
output to look like this:
$ ./make.bat
'C:\Program' is not recognized as an internal or external command,
operable program or batch file.
Building Go cmd/dist using C:\Program Files\Go. (go version =)
When it should look like this:
Building Go cmd/dist using C:\Program Files\Go. (go1.19 windows/amd64)
For #44505.
Change-Id: I71328add5c74bd2829c0e23224cfa6252395ff2c
GitHub-Last-Rev: a01fda6b52
GitHub-Pull-Request: golang/go#54270
Reviewed-on: https://go-review.googlesource.com/c/go/+/421356
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
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Reviewed-by: Ian Lance Taylor <iant@google.com>
The issue is expected to be fixed when Unified IR is enabled by default,
so adding a test to make sure thing works correctly.
Updates #53702
Change-Id: Id9d7d7ca4506103df0d10785ed5ee170d69988ba
Reviewed-on: https://go-review.googlesource.com/c/go/+/423434
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
We use EDNS(0) by default. No need to fall back to netdns=cgo if we
see a explicit request for EDNS(0) in resolv.conf.
For #51153
Change-Id: I135363112e3de43ce877aad45aba71d1448068b7
Reviewed-on: https://go-review.googlesource.com/c/go/+/415579
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Run-TryBot: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Damien Neil <dneil@google.com>
The existing value for M1 is 64, which is the same as other arm64 cpus.
But the correct cacheLineSize for M1 should be 128, which can be
verified using the following command:
$ sysctl -a hw | grep cachelinesize
hw.cachelinesize: 128
Fixes#53075
Change-Id: Iaa8330010a4499b9b357c70743d55aed6ddb8588
GitHub-Last-Rev: df87eb9c50
GitHub-Pull-Request: golang/go#53076
Reviewed-on: https://go-review.googlesource.com/c/go/+/408576
Reviewed-by: Keith Randall <khr@google.com>
Run-TryBot: Meng Zhuo <mzh@golangcn.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Martin Möhrmann <martin@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Keith Randall <khr@google.com>
Change-Id: I79695e1cfda3b4cd911673f6e14dc316c451e2ed
Reviewed-on: https://go-review.googlesource.com/c/go/+/423436
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Michael Knyszek <mknyszek@google.com>
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Reviewed-by: Michael Pratt <mpratt@google.com>
Extra Ms may lead to the "no consistent ordering of events possible" error when parsing trace file with cgo enabled, since:
1. The gs in the extra Ms may be in `_Gdead` status while starting trace by invoking `runtime.StartTrace`,
2. and these gs will trigger `traceEvGoSysExit` events in `runtime.exitsyscall` when invoking go functions from c,
3. then, the events of those gs are under non-consistent ordering, due to missing the previous events.
Add two events, `traceEvGoCreate` and `traceEvGoInSyscall`, in `runtime.StartTrace`, will make the trace parser happy.
Fixes#29707
Change-Id: I7cc4b80822d2c46591304a59c9da2c9fc470f1d0
GitHub-Last-Rev: 445de8eaf3
GitHub-Pull-Request: golang/go#53284
Reviewed-on: https://go-review.googlesource.com/c/go/+/411034
Run-TryBot: Michael Pratt <mpratt@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
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Reviewed-by: Michael Pratt <mpratt@google.com>
