There's no real reason to limit to 1<<30 bytes. Maybe it would catch
some mistakes, but probably ones that would quickly manifest in other
ways.
We can't use the fancy new unsafe.Slice function because this code
may still be generated for people with 1.16 or earlier in their go.mod file.
Use unsafe shenanigans instead.
Fixes#53965Fixes#53958
Change-Id: Ibfa095192f50276091d6c2532e8ccd7832b57ca8
Reviewed-on: https://go-review.googlesource.com/c/go/+/418557
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Keith Randall <khr@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Some of our tests do exec.Command("go", "tool", "compile", ...) or
similar. That "go" is selected from PATH. When run.go is started
from the command line (but not from all.bash), the first "go" is whatever
happens to be first in the user's path (some random older version than
tip). We really want all these tests to use the "go" tool from the
source tree under test. Add GOROOT/bin to the front of the path to
ensure that the tools we use come from the source tree under test.
Change-Id: I609261a4add8cd5cb228316752d52b5499aec963
Reviewed-on: https://go-review.googlesource.com/c/go/+/418474
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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Add more opcodes that are only available in >v1 modes.
This test will now correctly detect the regression in -race mode
for #53743.
Change-Id: Icfbb1384e4333d7b4ff167c9ebcb6f4c7aeb6134
Reviewed-on: https://go-review.googlesource.com/c/go/+/416477
Reviewed-by: Than McIntosh <thanm@google.com>
Run-TryBot: Keith Randall <khr@golang.org>
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Reviewed-by: Keith Randall <khr@google.com>
Change-Id: I228a23754656b41843573bd4217de4df46c9df36
Reviewed-on: https://go-review.googlesource.com/c/go/+/417954
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Jenny Rakoczy <jenny@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
It's not currently working. Somehow a field of type []constant.Value
causes it to barf. (That field was added with jump table statements.)
Also added some instructions about how to run it correctly (which took
me a suprisingly long time to figure out).
Larger improvements coming, but this gets us to a working state
and is safe for 1.19.
Change-Id: I3027356fde1294942e87d075ca28bb40d2c0d6c3
Reviewed-on: https://go-review.googlesource.com/c/go/+/418234
Reviewed-by: Keith Randall <khr@google.com>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Keith Randall <khr@golang.org>
Change-Id: I2cef8fa2a61fc69b9b21ff75428af428d99ae2f2
Reviewed-on: https://go-review.googlesource.com/c/go/+/418174
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Issue #53738 describes in detail how switching to using the actual
trigger point over the precomputed trigger causes a memory regression,
that arises from the fact that the PI controller in front of the
cons/mark ratio has a long time constant (for overdamping), so it
retains a long history of inputs.
This change, for the Go 1.19 cycle, just reverts to using the
precomputed trigger because it's safer, but in the future we should
consider moving away from such a history-sensitive smoothing function.
See the big comment in the diff and #53738 for more details.
Performance difference vs. 1.18 after this change:
https://perf.golang.org/search?q=upload:20220714.15Fixes#53738.
Change-Id: I636993a730a3eaed25da2a2719860431b296c6f9
Reviewed-on: https://go-review.googlesource.com/c/go/+/417557
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This update was created using the updatecontrib command:
go install golang.org/x/build/cmd/updatecontrib@latest
cd gotip
updatecontrib
With manual changes based on publicly available information
to canonicalize letter case and formatting for a few names.
For #12042.
Change-Id: I5e648b99004026513c5772b579a72b7add970db4
Reviewed-on: https://go-review.googlesource.com/c/go/+/418016
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Run-TryBot: Carlos Amedee <carlos@golang.org>
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"finializer" => "finalizer"
Change-Id: Ia3c12bff8556b6a8d33b700c59357f47502757b1
GitHub-Last-Rev: c64cf47974
GitHub-Pull-Request: golang/go#53917
Reviewed-on: https://go-review.googlesource.com/c/go/+/417915
Reviewed-by: Keith Randall <khr@golang.org>
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Reviewed-by: Keith Randall <khr@google.com>
This reverts CL 415236 (commit 558785a0a9).
Reason for revert: Google's internal build system uses -installsuffix.
Restoring -installsuffix for Go 1.19, and will try again for Go 1.20.
Change-Id: Id6571f34f99f01bcf55e8e949e6fe7b6c1896134
Reviewed-on: https://go-review.googlesource.com/c/go/+/418036
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Reviewed-by: David Chase <drchase@google.com>
The existing documentation is unclear about header keys formatting.
The clarifying sentence is added to Get function to emphasis that
keys have to be stored in canonical format to have Get returining
non empty value.
Fixes#53140
Change-Id: Icd0955bcbb6676cec028fe37042aed5846e13ed1
Reviewed-on: https://go-review.googlesource.com/c/go/+/417975
Run-TryBot: Damien Neil <dneil@google.com>
Auto-Submit: Damien Neil <dneil@google.com>
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Reviewed-by: Damien Neil <dneil@google.com>
atomic.Int64 has special logic in the compiler to ensure it's 8-byte
aligned on 32-bit architectures. The equivalent logic is missing in
go/types, which means the compiler and go/types can come to different
conclusions about the layout of types.
Fix this by mirroring the compiler's logic into go/types.
Fixes#53884.
Change-Id: I3f58a56babb76634839a161ca174c8f085fe3ba4
Reviewed-on: https://go-review.googlesource.com/c/go/+/417555
Reviewed-by: Robert Findley <rfindley@google.com>
For #53615
Change-Id: Ib85004d400931094fc1ea933cf73f4a5157aece1
Reviewed-on: https://go-review.googlesource.com/c/go/+/417559
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Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Because it requires a not insignificant amount of memory to run. Also
remove the WASM-only skip from TestScopeDepthLimit, which is less
intensive.
Fixes#53816
Change-Id: I8463046510ce4dd3d8f6d66938828d5e6963c3be
Reviewed-on: https://go-review.googlesource.com/c/go/+/417657
Auto-Submit: Roland Shoemaker <roland@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
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Run-TryBot: Roland Shoemaker <roland@golang.org>
TestCVE202230633 uses a bunch of memory, and the input cannot be
feasibly reduced while maintaining the behavior hasn't regressed. This
test could be reasonably removed, but I'd rather keep it around if we
can.
Fixes#53814
Change-Id: Ie8b3f306efd20b2d9c0fb73122c26351a55694c4
Reviewed-on: https://go-review.googlesource.com/c/go/+/417655
Run-TryBot: Roland Shoemaker <roland@golang.org>
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Reviewed-by: Bryan Mills <bcmills@google.com>
Within a single module we expect all needed checksums to have already
been recorded by a previous call to 'go get' or 'go mod tidy' in that
module. However, when we combine multiple modules in a workspace, they
may upgrade each other's dependencies, so a given module might be
upgraded above the highest version recorded in the individual go.sum
files for the workspace modules.
Since the checksums might not be present in individual go.sum files,
record them in go.work.sum.
Fixes#51946.
Change-Id: Icb4ea874b9e5c5b1950d42650974a24b5d6543d4
Reviewed-on: https://go-review.googlesource.com/c/go/+/417654
Auto-Submit: Bryan Mills <bcmills@google.com>
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
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Obsoleted by -importcfg.
cmd/link has a similar flag, but it seems to still be needed at least
for misc/cgo/testshared.TestGopathShlib. I can't immediately tell why
(has something to do with finding .so files), but it doesn't appear to
possibly affect cmd/compile.
Updates #51225.
Change-Id: I80c6aef860bd162c010ad4a1a4f532b400cf901c
Reviewed-on: https://go-review.googlesource.com/c/go/+/415236
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Russ Cox <rsc@golang.org>
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Obsoleted by -importcfg, and no longer used by anything.
Updates #51225.
Change-Id: I49e646d2728347f862f90805051bb03dd4f4bed2
Reviewed-on: https://go-review.googlesource.com/c/go/+/415235
Reviewed-by: Russ Cox <rsc@golang.org>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
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-buildmode=shared installs shared libraries into GOROOT
and expects to reuse them across builds.
Builds in module mode, however, each have their own set of
dependencies (determined by the module's requirements), so in general
cannot share dependencies with a single GOROOT.
Ideally in the long term we would like to eliminate -buildmode=shared
entirely (see #47788), but first we need a replacement for the subset
of use-cases where it still works today.
In the meantime, we should run these tests only in GOPATH mode.
Non-main packages in module mode should not be installed to
GOPATH/pkg, but due to #37015 they were installed there anyway,
and this test heavily relies on installing non-main packages.
For #37015.
Change-Id: I7c5d90b4075d6f33e3505d6a8f12752309ae5c03
Reviewed-on: https://go-review.googlesource.com/c/go/+/417194
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Non-main packages in module mode should not be installed to
GOPATH/pkg, but due to #37015 they were installed there anyway.
This change switches the 'go install' command in createHeaders to
instead use 'go build' (with an extension determined by the install
target for 'runtime/cgo', which is well-defined at least for the
moment), and switches TestCachedInstall (which appears to be
explicitly testing 'go install') to explicitly request GOPATH mode
(which provides a well-defined install target for the library).
This change follows a similar structure to CL 416954.
For #37015.
Change-Id: I22ae4af0f0d4c50adc9e0f0dc279859d1f258cc8
Reviewed-on: https://go-review.googlesource.com/c/go/+/417096
Run-TryBot: Bryan Mills <bcmills@google.com>
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Reviewed-by: Ian Lance Taylor <iant@google.com>
timerModifiedEarliest contains the lowest possible expiration for a
modified earlier timer, which may be earlier than timer0When because we
haven't yet updated the heap. Note "may", as the modified earlier timer
that set timerModifiedEarliest may have since been modified later or
deleted.
We can clear timerModifiedEarliest when the last timer is deleted
because by definition there must not be any modified earlier timers.
Why does this matter? checkTimersNoP claims that there is work to do if
timerModifiedEarliest has passed, causing findRunnable to loop back
around to checkTimers. But the code to clean up timerModifiedEarliest in
checkTimers (i.e., the call to adjusttimers) is conditional behind a
check that len(pp.timers) > 0.
Without clearing timerModifiedEarliest, a spinning M that would
otherwise go to sleep will busy loop in findRunnable until some other
work is available.
Note that changing the condition on the call to adjusttimers would also
be a valid fix. I took this approach because it feels a bit cleaner to
clean up timerModifiedEarliest as soon as it is known to be irrelevant.
Fixes#51654.
Change-Id: I3f3787c67781cac7ce87939c5706cef8db927dd5
Reviewed-on: https://go-review.googlesource.com/c/go/+/417434
Auto-Submit: Michael Pratt <mpratt@google.com>
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Reviewed-by: Ian Lance Taylor <iant@google.com>
For type assertions, if src type is empty interface, we should
use normal type assertions rather than dynamic type assertions.
Fixes#53762
Change-Id: I596b2e4ad647fe5e42ad884f7273c78f8f50dac2
Reviewed-on: https://go-review.googlesource.com/c/go/+/416736
Run-TryBot: Wayne Zuo <wdvxdr@golangcn.org>
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
Non-main packages in module mode should not be installed to
GOPATH/pkg, but due to #37015 they were installed there anyway.
Lacking a proper install location, 'go install' becomes a no-op
for non-main packages in module mode.
This change switches the 'go install' commands in the test_fuzz_cache
and build_overlay tests to instead use 'go build', using the '-x' flag
to check for compile commands instead of querying 'go list' about
staleness.
For #37015.
Change-Id: I56d80cf2a43efb6163c62082c86cd3e4f0ff73c1
Reviewed-on: https://go-review.googlesource.com/c/go/+/417095
Run-TryBot: Bryan Mills <bcmills@google.com>
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Reviewed-by: Russ Cox <rsc@golang.org>
The gccgo compiler does not load standard-library packages from
GOROOT/src, so we cannot load those packages from the GOROOT/src
index when using that compiler.
This fixes TestScript/gccgo_link_c (and perhaps other gccgo tests)
when a 'gccgo' executable is present. Unfortunately, only a few
builders caught the broken test because 'gccgo' is not installed
on most Go project builders (see #35786).
For #53577.
Fixes#53815.
Change-Id: I11a5cf6dbf4ac9893c4d02bd6ab7ef60f67b1e87
Reviewed-on: https://go-review.googlesource.com/c/go/+/417094
TryBot-Result: Gopher Robot <gobot@golang.org>
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Reviewed-by: Russ Cox <rsc@golang.org>
Also dump goroutines on failure.
The original bug report in #10413 reported a hang of “several
minutes”. An apparently-spurious failure was observed in
https://build.golang.org/log/e5ac3ce3fb7d04ec13e5bbfadea8bb5869a4dd1e,
with a delay of only 3.64s.
Moreover, if the test does fail due to a regression, we will want a
goroutine dump to diagnose where it got stuck. The current call to
t.Fatalf does not produce such a dump, so is not nearly as useful if
the failure only occasionally reproduces.
Updates #10413.
Change-Id: I6ab9d112f14f438a0c54e02ec95934627acdc64b
Reviewed-on: https://go-review.googlesource.com/c/go/+/408355
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Reviewed-by: Yuval Pavel Zholkover <paulzhol@gmail.com>
Reviewed-by: Robert Findley <rfindley@google.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
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addUpdate calls Query with the query "upgrade". Normally, this returns
the highest release version (or prerelease, etc.) that is higher than
the current version and is not retracted or excluded. If there is no
such version, Query should return the current version. If the current
version is retracted or excluded, then Query currently returns an error.
addUpdate should ignore this error, as it ignores ErrNotExist and
NoMatchingVersionError. For 'go list -m -u', addRetraction is also
called, and that will detect the retraction.
Fixes#53594
Change-Id: I90a2872cdeabf03894acad9e0cbdd7db4a4e269e
Reviewed-on: https://go-review.googlesource.com/c/go/+/414825
Run-TryBot: Bryan Mills <bcmills@google.com>
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Replace recursion with iteration in Reader.Read to avoid stack
exhaustion when there are a large number of files.
Fixes CVE-2022-30631
Fixes#53168
Change-Id: I47d8afe3f2d40b0213ab61431df9b221794dbfe0
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1455673
Reviewed-by: Roland Shoemaker <bracewell@google.com>
Reviewed-by: Julie Qiu <julieqiu@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/417067
Reviewed-by: Heschi Kreinick <heschi@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
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A limit is added to the number of path separators allowed by an input to
Glob, to prevent stack exhaustion issues.
Thanks to Juho Nurminen of Mattermost who reported the issue.
Fixes CVE-2022-30632
Fixes#53416
Change-Id: I1b9fd4faa85411a05dbc91dceae1c0c8eb021f07
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1498176
Reviewed-by: Roland Shoemaker <bracewell@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/417066
Reviewed-by: Heschi Kreinick <heschi@google.com>
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A limit is added to the number of path separators allowed by an input to
Glob, to prevent stack exhaustion issues.
Thanks to Juho Nurminen of Mattermost who reported a similar issue in
path/filepath.
Fixes CVE-2022-30630
Fixesgolang/go#53415
Change-Id: I5a9d02591fed90cd3d52627f5945f1301e53465d
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1497588
Reviewed-by: Roland Shoemaker <bracewell@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/417065
Run-TryBot: Michael Knyszek <mknyszek@google.com>
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Limit nested parsing to 100,000, which prevents stack exhaustion when
parsing deeply nested statements, types, and expressions. Also limit
the scope depth to 1,000 during object resolution.
Thanks to Juho Nurminen of Mattermost for reporting this issue.
Fixes#53616
Fixes CVE-2022-1962
Change-Id: I4d7b86c1d75d0bf3c7af1fdea91582aa74272c64
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1491025
Reviewed-by: Russ Cox <rsc@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/417063
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fsys.Walk is cloned from filepath.Walk, which has always handled
a walk of a directory by reading the full directory before calling the
callback on the directory itself. So if the callback returns fs.SkipDir,
those entries are thrown away, but the expense of reading them was
still incurred. (Worse, this is the expensive directory read that also
calls Stat on every entry.) On machines with slow file system I/O,
these reads are particularly annoying. For example, if I do
go list m...
there is a call to filepath.Walk that is told about $GOROOT/src/archive
and responds by returning filepath.SkipDir because archive does not
start with m, but it only gets the chance to do that after the archive
directory has been read. (Same for all the other top-level directories.)
Even something like go list github.com/foo/bar/... reads every top-level
$GOPATH/src directory.
When we designed filepath.WalkDir, one of the changes we made was
to allow calling the callback twice for a directory: once before reading it,
and then possibly again if the read produces an error (uncommon).
This CL changes fsys.Walk to use that same model. None of the callbacks
need changing, but now the $GOROOT/src/archive and other top-level
directories won't be read when evaluating a pattern like 'm...'.
For #53577.
Fixes#53765.
Change-Id: Idfa3b9e2cc335417bfd9d66dd584cb16f92bd12e
Reviewed-on: https://go-review.googlesource.com/c/go/+/416179
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
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A MaxBytesReader returns a *MaxBytesError when reading beyond
its limit, not a MaxBytesError.
Fixes#53764.
Change-Id: Icac3aeac96fd8b172f951241f8f111cda633752c
Reviewed-on: https://go-review.googlesource.com/c/go/+/416914
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Damien Neil <dneil@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Change-Id: Ie51545eaebd22a31379bf8814a2c62b91d1d105b
Reviewed-on: https://go-review.googlesource.com/c/go/+/416934
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
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Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
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Reviewed-by: Ian Lance Taylor <iant@google.com>
If a goroutine is started within a user region, internal/trace assigns
the child goroutine a nameless region for its entire lifetime which is
assosciated the same task as the parent's region.
This is not strictly necessary: a child goroutine is not necessarily
related to the task unless it performs some task operation (in which
case it will be associated with the task through the standard means).
However, it can be quite handy to see child goroutines within a region,
which may be child worker goroutines that you simply didn't perform task
operations on.
If the first GC occurs during a region, the GC worker goroutines will
also inherit a child region. We know for sure that these aren't related
to the task, so filter them out from the region list.
Note that we can't exclude system goroutines from setting activeRegions
in EvGoCreate handling, because we don't know the goroutine start
function name until the first EvGoStart.
Fixes#53784.
Change-Id: Ic83d84e23858a8400a76d1ae2f1418ef49951178
Reviewed-on: https://go-review.googlesource.com/c/go/+/416858
Run-TryBot: Michael Pratt <mpratt@google.com>
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
Rebuild selected amd64 syso images with updated LLVM build rules that
avoid the use of SSE4, so as to ensure that the Go race detector
continues to work on older x86 cpus. No changes to the syso files for
openbsd/amd64 (upstream support has been removed in LLVM) or
netbsd/amd64 (work still in progress there).
Fixes#53743.
Change-Id: I738ae4d1e0528c6e06dd4ddb78e7039a30a51779
Reviewed-on: https://go-review.googlesource.com/c/go/+/416857
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Than McIntosh <thanm@google.com>
For a large module, opening the index was populating tables with
entries for every package in the module. If we are only using a small
number of those packages, this is wasted work that can dwarf the
benefit from the index.
This CL changes the index reader to avoid loading all packages
at module index open time. It also refactors the code somewhat
for clarity.
It also removes some duplication by defining that a per-package
index is a per-module index containing a single package, rather
than having two different formats and two different decoders.
It also changes the string table to use uvarint-prefixed data
instead of having to scan for a NUL byte. This makes random access
to long strings more efficient - O(1) instead of O(n) - and can significantly
speed up the strings.Compare operation in the binary search looking
for a given package.
Also add a direct test of the indexing code.
For #53577.
Change-Id: I7428d28133e4e7fe2d2993fa014896cd15af48af
Reviewed-on: https://go-review.googlesource.com/c/go/+/416178
Reviewed-by: Bryan Mills <bcmills@google.com>
Non-main packages in module mode should not be installed to
GOPATH/pkg, but due to #37015 they were installed there anyway.
This change switches the 'go install' command in testGoLib to instead
use 'go build -buildmode=archive' with an explicit output file.
For #37015.
Change-Id: I15781aa33d1b2adc6a4437a58622276f4e20b889
Reviewed-on: https://go-review.googlesource.com/c/go/+/416955
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Bryan Mills <bcmills@google.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
Non-main packages in module mode should not be installed to
GOPATH/pkg, but due to #37015 they were installed there anyway.
This change switches the 'go install' command in TestPIE to instead
use 'go build', and switches TestInstall and TestCachedInstall
(which appear to be explicitly testing 'go install') to explicitly
request GOPATH mode (which does have a well-defined install target).
For #37015.
Change-Id: Ifb24657d2781d1e35cf40078e8e3ebf56aab9cc8
Reviewed-on: https://go-review.googlesource.com/c/go/+/416954
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Bryan Mills <bcmills@google.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Similar to CL 385934, rely on waiter trigger instead of the WAIT query
prefix and factor out the common test code.
Fixes#53222
Change-Id: I46efc85ca102b350bb4dbe8e514921e016870ffb
Reviewed-on: https://go-review.googlesource.com/c/go/+/416655
Reviewed-by: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Bryan Mills <bcmills@google.com>
Run-TryBot: Dmitri Goutnik <dgoutnik@gmail.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
load.loadPackageData was only using an index for modules,
not for standard library packages. Other parts of the code were
using the index, so there was some benefit, but not as much
as you'd hope.
With the index disabled, the Script/work test takes 2.2s on my Mac.
With the index enabled before this CL, it took 2.0s.
With the index enabled after this CL, it takes 1.6s.
Before this CL, the Script/work test issued:
429 IsDir
19 IsDirWithGoFiles
7 Lstat
9072 Open
993 ReadDir
256 Stat
7 Walk
3 indexModule
24 openIndexModule
525 openIndexPackage
After this CL, it issued:
19 IsDirWithGoFiles
7 Lstat
60 Open
606 ReadDir
256 Stat
7 Walk
3 indexModule
24 openIndexModule
525 openIndexPackage
This speedup helps the Dragonfly builder, which has very slow
file I/O and is timing out since a recent indexing change.
Times for go test -run=Script/^work$ on the Dragonfly builder:
50s before indexing changes
31s full module indexing of std
46s per-package indexing of std
It cuts the time for go test -run=Script/^work$ from 44s to 20s.
For #53577.
Change-Id: I7189a77fc7fdf61de3ab3447efc4e84d1fc52c25
Reviewed-on: https://go-review.googlesource.com/c/go/+/416134
Reviewed-by: Bryan Mills <bcmills@google.com>
