The linux-amd64-wsl builder was failing because the res_nsearch
implementation was storing pointer to the res_state's own fields
in other fields in the res_state. If the res_state is Go memory, this
looks like pointers to Go pointers. Moving the res_state to C memory
avoids the problem.
The linux-amd64-wsl builder has been fixed a different way by
replacing res_nsearch with res_search on Linux, where it is thread-safe.
But other systems that still need to use res_nsearch (such as macOS)
may run into the same kind of problem, so it is probably still worth
arranging for the res_state to live entirely in C memory.
Fixes#56658 (again).
Change-Id: I58a14e72c866eaceb02ad828854a1f626b9b8e73
Reviewed-on: https://go-review.googlesource.com/c/go/+/448798
Run-TryBot: Russ Cox <rsc@golang.org>
Auto-Submit: Russ Cox <rsc@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
startTheWorldWithSema should call traceGCSTWDone only when
the tracing is enabled.
Change-Id: Ibc7181834f68af3923e4b2aee01a57492ab6213e
Reviewed-on: https://go-review.googlesource.com/c/go/+/330835
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
This bool doesn't seem to be used anymore. Remove it.
Change-Id: Ic73346a98513c392d89482c5e1d818a90d713516
Reviewed-on: https://go-review.googlesource.com/c/go/+/419654
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
If an imported, non-generic function F transitively calls a generic
function G[T], we may need to call CanInline on G[T].
While here, we can also take advantage of the fact that we know G[T]
was already seen and compiled in an imported package, so we don't need
to call InlineCalls or add it to typecheck.Target.Decls. This saves us
from wasting compile time re-creating DUPOK symbols that we know
already exist in the imported package's link objects.
Fixes#56280.
Change-Id: I3336786bee01616ee9f2b18908738e4ca41c8102
Reviewed-on: https://go-review.googlesource.com/c/go/+/443535
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
On Android and Dragonfly, don't use -lresolv. It doesn't exist there.
On Linux, use res_search instead of res_nsearch.
glibc makes res_search thread-safe by having a per-thread __res.
It still also provides res_nsearch.
musl makes res_search thread-safe by ignoring __res completely.
It does not provide res_nsearch at all.
Changing to res_search on Linux will fix builds on musl-based systems
while keeping glibc-based systems working.
Fixes#56657.
Fixes#56660.
Change-Id: Id87dde6c8bbf6c0d34543c09782f3871489c8712
Reviewed-on: https://go-review.googlesource.com/c/go/+/448797
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
The current code passes a Go pointer to a NUL-terminated C string
to the C function res_nsearch (or res_search), but that function may
in turn store the pointer into the res_state, which is a violation of the
cgo pointer rules and is being detected on the linux-amd64-wsl builder.
Allocating the string in C memory is safer and should resolve
the cgo pointer check. When using libc/syscall mode, the memory
is still allocated Go-side, which could potentially be a problem
if we ever add a moving collector. For now it is OK.
Fixes#56658.
Change-Id: Ibd84a9665be16c71994ddb1eedf09d45a6553a3e
Reviewed-on: https://go-review.googlesource.com/c/go/+/448795
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Bypass: Russ Cox <rsc@golang.org>
Return an error when parsing a MIME header containing bytes in the
key or value outside the set allowed by RFC 7230.
For historical compatibility, accept spaces in keys (but do not
canonicalize the key in this case).
For #53188.
Change-Id: I195319362a2fc69c4e506644f78c5026db070379
Reviewed-on: https://go-review.googlesource.com/c/go/+/410714
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Damien Neil <dneil@google.com>
This CL updates svn vctest so they work on Windows.
Side effect is that svn logs are no longer timezone dependant, as this
updated the `svn log` command to format logs using XML, which contain
UTC dates instead of local dates. Therefore it supersedes
https://go-review.googlesource.com/c/go/+/447795.
Fixes#56555Fixes#56527
Change-Id: I5a654fd0a0f741e0a8a6ca7021ad699c07b974d6
Reviewed-on: https://go-review.googlesource.com/c/go/+/447935
Reviewed-by: Benny Siegert <bsiegert@gmail.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Quim Muntal <quimmuntal@gmail.com>
Add a -pgo flag for "go build" (and other build actions), to
specify the file path of a profile used for PGO. Special name
"off" turns off PGO.
The given profile path is passed to the compiler.
The build cache is sensitive to the content of the given PGO
profile.
TODO: auto mode.
For #55022.
Change-Id: Ieee1b131b4c041f9502fd0a1acf112f3e44246be
Reviewed-on: https://go-review.googlesource.com/c/go/+/438736
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Cherry Mui <cherryyz@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
This change modifies the pacer in two ways:
* It replaces the PI controller used as a smoothing function with a
simple two-cycle moving average.
* It makes the pacer use the actual GC trigger point for cons/mark (and
other) calculations instead of the precomputed one.
The second part of this change was attempted in the Go 1.19 release
cycle, but could not be done because although it resulted in a
better-behaved pacer, it exploited the PI controller's sensitivity to
history in a way that was ultimately unfavorable for most applications.
This sensitivity is complex to reason about, and forces us into choices
that don't really make sense (like using the precomputed trigger over
the actual one -- that's really a bug fix).
The net effect of this change is intended to be:
* The pacer computes a more stable estimate of the actual cons/mark
ratio, making it easier to understand.
* The pacer is much more accurate at hitting the heap goal, so the GC
respects GOGC much more often and reliably.
* The pacer forces a more stable rate of GC assists in the
steady-state overall.
See https://perf.golang.org/search?q=upload:20221106.10 for benchmark
results and #53892 for complete context. The benchmarks that regress
in memory use appear to be not worth worrying about. In all cases, it appears that the GC was triggering super early, resulting in a lack
of adherence to rule of GOGC.
The fogleman benchmarks just have a single final GC that triggers
early and also happens to be the peak heap size. The tile38
WithinCircle benchmark only has 4 GC cycles in the benchmarked region,
so it's very sensitive to pacing. In this case, the old smoothing
function is getting lucky by starting way too early, avoiding assists. Meanwhile the 2-cycle moving average is more accurate on the heap
goal, but the 1st and 2nd cycle after the initialization phase are operating on a cons/mark from the initialization phase which is much
less active, resulting in a cons/mark that's too low, causing the GC
to start too late, increasing assists, and therefore latency (but
only transiently, at this phase change). I really do think the PI
controller is just getting lucky here with a particular history,
because I've definitely observed it oscillating wildly in response to
a phase change.
This change also moves the PI controller out of mgcpacer.go, because
it's no longer used there. It now lives in mgcscavenge.go, where it's
actually used.
Fixes#53892.
Change-Id: I3f875a2e40f31f381920f91d8b090556b17a2b16
Reviewed-on: https://go-review.googlesource.com/c/go/+/417558
Run-TryBot: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
- Include the callee names in hot call inlining message.
- Print the graph when pgoinline >= 2.
Change-Id: Iceb89b5f18cefc69ab9256aca9a910743d22ec0f
Reviewed-on: https://go-review.googlesource.com/c/go/+/448496
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Cherry Mui <cherryyz@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Passing a profile with no sample is arguably not a user error.
Accept such a profile, and ignore it as it doesn't indicate any
optimizations. This also makes testing easier.
Change-Id: Iae49a4260e20757419643153f50d8d5d51478411
Reviewed-on: https://go-review.googlesource.com/c/go/+/448495
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
Appears to be a typo in CL 447315.
Change-Id: I9f380a3c7521f5ac5a1d7e271eaa60bd4bbcfb29
Reviewed-on: https://go-review.googlesource.com/c/go/+/448515
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
Unix and Windows differ in how they handle LookupCNAME(name).
If name exists in DNS with an A or AAAA record but no CNAME,
then on all operating systems and in the pure Go resolver,
LookupCNAME returns the name associated with the A/AAAA record
(the original name).
TestLookupCNAME has been testing this, because www.google.com
has no CNAME. I think it did at one point, but not anymore, and the
tests are still passing. Also added google.com as a test, since
top-level domains are disallowed from having CNAMEs.
If name exists in DNS with a CNAME record pointing to a record that
does not exist or that has no A or AAAA record,
then Windows has always reported the CNAME value,
but Unix-based systems and the pure Go resolver have reported
a failure instead. cname-to-txt.go4.org is an test record that is
a CNAME to a non-A/AAAA target (the target only has a TXT record).
This CL changes the Unix-based systems and the pure Go resolver
to match the Windows behavior, allowing LookupCNAME to succeed
whenever a CNAME exists.
TestLookupCNAME nows tests the new behavior by looking up
cname-to-txt.go4.org (run by bradfitz).
Fixes#50101.
Change-Id: Ieff5026c8535760e6313c7a41ebd5ff24de6d9be
Reviewed-on: https://go-review.googlesource.com/c/go/+/446179
Run-TryBot: Russ Cox <rsc@golang.org>
Auto-Submit: Russ Cox <rsc@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
The interface will let us store actor-specific state in the
interface implementation instead of continuing to grow
the Action struct. In the long term we should remove fields
from the struct that are not used by all Actions.
Change-Id: I8ac89eda7a91d742cee547a1f779e9f254dfd2f0
Reviewed-on: https://go-review.googlesource.com/c/go/+/448356
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
Extend the context package to allow users to specify why a context was
canceled in the form of an error, the "cause". Users write the cause
by calling WithCancelCause to construct a derived context, then
calling cancel(cause) to cancel the context with the provided cause.
Users retrieve the cause by calling context.Cause(ctx), which returns
the cause of the first cancelation for ctx or any of its parents.
The cause is implemented as a field of cancelCtx, since only cancelCtx
can be canceled. Calling cancel copies the cause to all derived (child)
cancelCtxs. Calling Cause(ctx) finds the nearest parent cancelCtx by
looking up the context value keyed by cancelCtxKey.
API changes:
+pkg context, func Cause(Context) error
+pkg context, func WithCancelCause(Context) (Context, CancelCauseFunc)
+pkg context, type CancelCauseFunc func(error)
Fixes#26356Fixes#51365
Change-Id: I15b62bd454c014db3f4f1498b35204451509e641
Reviewed-on: https://go-review.googlesource.com/c/go/+/375977
Reviewed-by: Damien Neil <dneil@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Sameer Ajmani <sameer@golang.org>
Auto-Submit: Sameer Ajmani <sameer@golang.org>
Change-Id: Iddf4d3bcc3bc2badf0d0f6b06375c901e76a40bb
GitHub-Last-Rev: 95586bfc16
GitHub-Pull-Request: golang/go#56268
Reviewed-on: https://go-review.googlesource.com/c/go/+/443315
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Change-Id: I7605bcbbaa64bb4273ad458a157b1c6011467973
Reviewed-on: https://go-review.googlesource.com/c/go/+/447915
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Remove redundant code at line 365, `oldCtx := req.Context()`, because it's the same as line 349.
Change-Id: I9b028e8c8740c22945708b143e4e86a0baa40f64
GitHub-Last-Rev: 4ad0f3871b
GitHub-Pull-Request: golang/go#54925
Reviewed-on: https://go-review.googlesource.com/c/go/+/428977
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Damien Neil <dneil@google.com>
Resend of CL 432735 (with one additional conversion that the original CL
missed) after it broke the longtest builder on x/tools and was reverted
in CL 433478. Now that x/tools/go/ssa has support for this, the longtest
x/tools build passes as well.
Use slice-to-array conversions in AddrFromSlice and
(*Addr).UnmarshalBinary. This allows using AddrFrom16 and drop the
redundant ipv6Slice helper.
For #46505
Change-Id: I4d8084b7a97f162e4f7d685c86aac56d960ff693
Reviewed-on: https://go-review.googlesource.com/c/go/+/448396
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
This gets the Go command out of the business of thinking it understands
compiler debug flags, and allows the compiler to turn down its worker
concurrency instead of failing and forcing the user to do the very
same thing. Debug flags that are obviously safe for concurrency
(at least to me) are tagged; probably there's more.
Change-Id: I59bb19861d8a654a9cfd2364ee78c8628212f82e
Reviewed-on: https://go-review.googlesource.com/c/go/+/448359
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Invalid struct name in the comment in merge.go
dstate -> mstate
dstate already exists and is in cmd/covdata/dump.go
Change-Id: Id8b2412d2f81ae8afa1e9df3d09c218d84818ffb
GitHub-Last-Rev: 898eda4a20
GitHub-Pull-Request: golang/go#56631
Reviewed-on: https://go-review.googlesource.com/c/go/+/448475
Run-TryBot: Than McIntosh <thanm@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Alpine has a known issue where setgid clobbers the Go stack (#39857).
misc/cgo/test skips other tests that use setgid on Alpine, but not
this one. It's not clear to me why this test *used to* pass, but when
I refactored misc/cgo/test in CL 447355 it started failing.
Disable this test on Alpine, like the other setgid tests.
Change-Id: I2e646ef55e2201a4f0b377319d719a011ec847f0
Reviewed-on: https://go-review.googlesource.com/c/go/+/448355
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Austin Clements <austin@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Support for direct libc calls was added in CL 446178 but the build
tags weren't quite activating it when cgo was not enabled. Adjust them
and add a new supporting file for darwin.
This should use the new direct libc calls with both CGO_ENABLED=0 and
CGO_ENABLED=1 when building for darwin.
Updates #12524
Change-Id: Ieee4b298dee13f389ed3a63c0a4a3a18c9180163
Reviewed-on: https://go-review.googlesource.com/c/go/+/448020
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Dan Peterson <danp@danp.net>
Auto-Submit: Ian Lance Taylor <iant@google.com>
In verifyServerCertificate parse certificates using the global
certificate cache.
This should signficiantly reduce memory usage in TLS clients which make
concurrent connections which reuse certificates (anywhere in the chain)
since there will only ever be one copy of the certificate at once.
Fixes#46035
Change-Id: Icf5153d0ea3c14a0bdc8b26c794f21153bf95f85
Reviewed-on: https://go-review.googlesource.com/c/go/+/426455
Reviewed-by: Heschi Kreinick <heschi@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Roland Shoemaker <roland@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Change-Id: Iabf955cdb161d02cb4a3e06f466b331e1b6eb2c2
Signed-off-by: cui fliter <imcusg@gmail.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/447456
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Adds a BoringSSL CRYPTO_BUFFER_POOL style reference counted intern
table for x509.Certificates. This can be used to significantly reduce
the amount of memory used by TLS clients when certificates are reused
across connections.
Updates #46035
Change-Id: I8d7af3bc659a93c5d524990d14e5254212ae70f4
Reviewed-on: https://go-review.googlesource.com/c/go/+/426454
Run-TryBot: Roland Shoemaker <roland@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Though we split traces into 100MB chunks, currently each chunk always
includes the entire stack frame map, including frames for all events in
the trace file, even if they aren't needed by events in this chunk.
This means that if the stack frame JSON alone is >100MB then there is no
space at all for events. In that case, we'll generate splits each
containing 1 event, which is effectively useless.
Handle this more efficiently by only including stack frames referenced
by events in the chunk. Each marginal events only adds at most a few
dozen stack frames, so it should now longer be possible to only include
a tiny number of events.
Fixes#56444.
Change-Id: I58aa8f271c32678028b72d82df16e6ea762ebb39
Reviewed-on: https://go-review.googlesource.com/c/go/+/445895
Run-TryBot: Michael Pratt <mpratt@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
runtime.bgsweep contains an infinite loop. With aggressive enough
inlining, it may not perform any CALLs on a typical iteration. If
the runtime trying to preempt this goroutine, the lack of CALLs may
prevent preemption for ever occurring.
bgsweep does happen to call goschedIfBusy. Add a preempt check there to
make sure we yield eventually.
For #55022.
Change-Id: If22eb86fd6a626094b3c56dc745c8e4243b0fb40
Reviewed-on: https://go-review.googlesource.com/c/go/+/447135
Run-TryBot: Michael Pratt <mpratt@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
ISEL is roughly equivalent to CMOV on PPC64. Verify ISEL generation
in all reasonable cases.
Note "ISEL test x y z" is the same as "ISEL !test y x z". test is
always one of LT (0), GT (1), EQ (2), SO (3). Sometimes x and y are
swapped if GE/LE/NE is desired.
Change-Id: Ie1bf029224064e004d855099731fe5e8d05aa990
Reviewed-on: https://go-review.googlesource.com/c/go/+/445215
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Paul Murphy <murp@ibm.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Change-Id: I1f713bbb35917ab50b0cde24a81340aa16c2ed03
Reviewed-on: https://go-review.googlesource.com/c/go/+/448195
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Benny Siegert <bsiegert@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Change-Id: Ic16824482142d4de4d0b949459e36505ee944ff7
Reviewed-on: https://go-review.googlesource.com/c/go/+/448175
Reviewed-by: Robert Griesemer <gri@google.com>
Run-TryBot: Dan Kortschak <dan@kortschak.io>
Auto-Submit: Robert Griesemer <gri@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Dan Kortschak <dan@kortschak.io>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
For #46746
Change-Id: I75ddb9ce24cd3394186562dae156fef9fe2d55d3
Reviewed-on: https://go-review.googlesource.com/c/go/+/447798
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Change-Id: I871a747b4b47bccc889f2fdc93a2bcebb041b719
Reviewed-on: https://go-review.googlesource.com/c/go/+/447895
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Currently locations are stored in a map and looked up by ID from
the map. The IDs are usually small sequential integers (the Go
pprof CPU profiles are so). Using a slice is more efficient (with
a fallback map to handle weirdly large IDs).
Change-Id: I9e20d5cebca3a5239636413e1bf2f0b273038031
Reviewed-on: https://go-review.googlesource.com/c/go/+/447803
Run-TryBot: Cherry Mui <cherryyz@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Now that most GOROOT packages do not have install targets, their
staleness depends on whether their builds have been cached. That means
that, from a clean cache, once
TestNewReleaseRebuildsStalePackagesInGOPATH builds certain targets, they
will stay non-stale for the second run of the test, becasue the will
still be in the cache. So the first run of the test from a clean cache
will pass and the second will fail. Set GOCACHE to a temporary directory
in the test to use a clean cache and avoid this.
Change-Id: I91f954138a4723d81545134441148badbfc515f5
Reviewed-on: https://go-review.googlesource.com/c/go/+/448018
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Run-TryBot: Michael Matloob <matloob@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Rather than matching calls to edges in the profile based directly on
line number in the source file, use the line offset from the start of
the function. This makes matching robust to changes in the source file
above the function containing the call.
The start line in the profile comes from Function.start_line, which is
included in Go pprof output since CL 438255.
Currently it is an error if no samples set start_line to help users
detect profiles missing this information. In the future, we should
fallback to using absolute lines, which is better than nothing.
For #55022.
Change-Id: Ie621950cfee1fef8fb200907a2a3f1ded41d04fa
Reviewed-on: https://go-review.googlesource.com/c/go/+/447315
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Michael Pratt <mpratt@google.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
When adding weights for a call stack, for recursive calls, to
avoid double counting we check if we already saw the node and the
edge. We check the node first. An edge can be repeated if the node
is repeated. Most stacks are not recursive, so check repeated edge
only conditionally.
Change-Id: I4b8f039289dcd3383ca89593d6d16d903b94c3dd
Reviewed-on: https://go-review.googlesource.com/c/go/+/447804
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Cherry Mui <cherryyz@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Now that misc/cgo/test doesn't invoke any Go builds itself, we don't
need to use GOFLAGS to thread build flags down into sub-builds.
Preparation for #37486.
Change-Id: I9ecdd215da5c21339cbf76765f8be2190d19539c
Reviewed-on: https://go-review.googlesource.com/c/go/+/447356
Reviewed-by: Than McIntosh <thanm@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Austin Clements <austin@google.com>
When we were first introducing module mode, CL 163418 moved many of
the tests in misc/cgo/test into their own test binary under testdata
so misc/cgo/test continued to work in both GOPATH mode and module
mode. This introduce a somewhat complicated test driver into
misc/cgo/test. Since the misc/cgo/test test had to invoke "go test" as
a subprocess, this required care to thread any build flags down into
the subprocess. The output from any failures of the sub-process was
also less than ideal.
Now that we don't have to worry about running these in GOPATH mode any
more, this CL moves all of the tests back into misc/cgo/test and drops
the test driver.
There are two slight complications:
- Test41761 was added after this split and has a C type "S" that's
also present in misc/cgo/test itself. We rename that to keep that
test working.
- TestCgo in go/internal/srcimporter now fails to import misc/cgo/test
because misc/cgo/test now contains imports of other "misc" module
packages and the importer it sets up isn't configured to allow that.
We fix this by setting up a build context that's configured for
this.
Preparation for #37486.
Change-Id: I3c4f73540e0482bbd493823cca44b0ce7fac01f3
Reviewed-on: https://go-review.googlesource.com/c/go/+/447355
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Currently in the pprof Graph, a Node's in/out edges are
represented as maps, keyed by the source/destination Nodes. For a
Node it usually has a very small number of edges, so linear search
would be generally faster than map operations. Use slices and
linear search instead.
Change-Id: I5ab06be0c019373cd3a845b9f3282731372e9c4c
Reviewed-on: https://go-review.googlesource.com/c/go/+/447802
Reviewed-by: Michael Pratt <mpratt@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
We intentionally don't use file path so it is resilient to code
moving. OrigName and Objfile are also not used currently. Remove
them. (We can add them back if it turns out to be useful.)
Change-Id: I7975d78c874bc21475b9119301088452a4426cb9
Reviewed-on: https://go-review.googlesource.com/c/go/+/447801
Reviewed-by: Michael Pratt <mpratt@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
