Check map invariants, type size and alignments during compile time.
Keep runtime checks for reflect by adding them to reflect_makemap.
Change-Id: Ia28610626591bf7fafb7d5a1ca318da272e54879
Reviewed-on: https://go-review.googlesource.com/59914
Run-TryBot: Martin Möhrmann <moehrmann@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
* rename to emitPcln because I'd like to skip not only container types,
but also something like "go.buildid" in the future.
* return bool instead of int.
Change-Id: I029adb81292f7dd2fe98e69f3877c5c27f32ec30
Reviewed-on: https://go-review.googlesource.com/59415
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
We take a best-effort approach since information for these fields
are not well supported on all platforms.
user.LookupId+user.LookupGroupId is currently 15x slower than os.Stat.
For performance reasons, we perpetually cache username and groupname
with a sync.Map. As a result, this function will not be updated whenever
the user or group names are renamed in the OS. However, this is a better
situation than before, where those fields were not populated at all.
Change-Id: I3cec8291aed7675dea89ee1cbda92bd493c8831f
Reviewed-on: https://go-review.googlesource.com/59531
Run-TryBot: Joe Tsai <thebrokentoaster@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit relaxes SendmsgN behavior of introducing a dummy 1-byte
payload when sending ancillary-only messages.
The fake payload is not needed for SOCK_DGRAM type sockets, and actually
breaks interoperability with other fd-passing software (journald is one
known example). This introduces an additional check to avoid injecting
dummy payload in such case.
Full reference at https:/golang.org/issue/6476#issue-51285243
Fixes#6476
Change-Id: I19a974b4e7920e002bd0556259ab766572358520
Reviewed-on: https://go-review.googlesource.com/45872
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Change-Id: I8a54235c8b7bf1010f19d0d358cd4f76fc911d28
Reviewed-on: https://go-review.googlesource.com/59416
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Change-Id: Ifc66bd8c32e788f35da3bd105bcdcfd04bd3dabc
Reviewed-on: https://go-review.googlesource.com/59414
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
* extract pkgname() and findlib() from the function for #18190.
* rename const pkgname to const pkgdef to avoid confliction.
Change-Id: Ie62509bfbddcf19cf92b5b12b598679a069e6e74
Reviewed-on: https://go-review.googlesource.com/59417
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Right now we only kind of sort of trace GC STW events. We emit events
around mark termination, but those start well after stopping the world
and end before starting it again, and we don't emit any events for
sweep termination.
Fix this by generalizing EvGCScanStart/EvGCScanDone. These were
already re-purposed to indicate mark termination (despite the names).
This commit renames them to EvGCSTWStart/EvGCSTWDone, adds an argument
to indicate the STW reason, and shuffles the runtime to generate them
right before stopping the world and right after starting the world,
respectively.
These events will make it possible to generate precise minimum mutator
utilization (MMU) graphs and could be useful in detecting
non-preemptible goroutines (e.g., #20792).
Change-Id: If95783f370781d8ef66addd94886028103a7c26f
Reviewed-on: https://go-review.googlesource.com/55411
Reviewed-by: Rick Hudson <rlh@golang.org>
Also add more test cases.
Change-Id: I53cc6484b25560fc7a4b5d44e73bbd9270c25769
Reviewed-on: https://go-review.googlesource.com/59950
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Found with mvdan.cc/unindent. It skipped the cases where parentheses
would need to be added, where comments would have to be moved elsewhere,
or where actions and simple logic would mix.
One of them was of the form "err != nil && err == io.EOF", so the first
part was removed.
Change-Id: Ie504c2b03a2c87d10ecbca1b9270069be1171b91
Reviewed-on: https://go-review.googlesource.com/57690
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Some custom usage functions call it for clarity; others rely on the default
behavior, which makes an explicit call redundant. Document that it's
safe to be explicit.
Fixes#21671.
Change-Id: I08e9f47265582821cfd35995dff0c589cd85809d
Reviewed-on: https://go-review.googlesource.com/59792
Reviewed-by: Dominik Honnef <dominik@honnef.co>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
There are several distros now that no longer have /bin.
Instead of assuming /bin/pwd, we will look for it in $PATH.
Fixes#21684.
Change-Id: I61478326500edeadc3c26803990550dad00c7971
Signed-off-by: Ron Minnich <rminnich@gmail.com>
Reviewed-on: https://go-review.googlesource.com/60010
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
CL 57291 broke on solaris because it depends on signal forwarding
working for signals raised by dieFromSignal.
Call sigtrampgo instead of sighandler directly, like the other
unix platforms.
Fixes the solaris builders.
Change-Id: I6bf314c436d1edeaecc4b03f15a9155270919524
Reviewed-on: https://go-review.googlesource.com/59811
Run-TryBot: Elias Naur <elias.naur@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Saying that they return t unchanged is misleading, because they return
a modified t, stripped of any monotonic clock reading, as of Go 1.9.
Fixes#21485.
Change-Id: Icddf8813aed3d687fcefcd2fe542829438be6a0a
Reviewed-on: https://go-review.googlesource.com/56690
Reviewed-by: Avelino <t@avelino.xxx>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit adds an example to the runtime/trace package
on how to use the trace.Start and trace.Stop functions
to trace the execution of a Go program and write
its trace output to a file.
Change-Id: Idf920398f1c3b9d185af9df5ce9293f2361db022
Reviewed-on: https://go-review.googlesource.com/51170
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
This change could improve the hit rate on itabTable during growth.
While we are here patch comments to refer to existing functions.
Change-Id: I76f81c860a3d6107e077e7e3932550858a8b7651
Reviewed-on: https://go-review.googlesource.com/55912
Run-TryBot: Martin Möhrmann <moehrmann@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
This change adds new ppc64 instructions from the POWER9 ISA. This includes
compares, loads, maths, register moves and the new random number generator and
copy/paste facilities.
Change-Id: Ife3720b90f5af184ff115bbcdcbce5c1302d39b6
Reviewed-on: https://go-review.googlesource.com/53930
Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
According to CL 31817, fmt cannot invoke String or Error methods
on unexported struct fields.
Fixes#17798.
Change-Id: I0d516577298bc36daa9a94313c3874d64dc079e6
Reviewed-on: https://go-review.googlesource.com/44831
Reviewed-by: Rob Pike <r@golang.org>
CL 49590 made it possible for external signal handlers to catch
signals from a crashing Go process. This CL extends that support
to handlers registered after the Go runtime has initialized.
Updates #20392 (and possibly fix it).
Change-Id: I18eccd5e958a505f4d1782a7fc51c16bd3a4ff9c
Reviewed-on: https://go-review.googlesource.com/57291
Run-TryBot: Elias Naur <elias.naur@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
CL 59375 changed Reloc.Done to bool, but that change
got lost in pe.go while merging. Restore that change.
Change-Id: Ie5a89e85579cdc9282f504fefd56355cfeb49389
Reviewed-on: https://go-review.googlesource.com/59711
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Without this CL, the system linker complains about absolute addressing
in type..eqfunc.*.
Updates #18190
Change-Id: I68db37a7f4c96b16a9c13baffc0f043a3048df6d
Reviewed-on: https://go-review.googlesource.com/59373
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Current code uses names like "x" and "s" which can conflict with user's
code easily. Use cryptographic names.
Fixes#21668
Change-Id: Ib6d3d6327aa5b92d95c71503d42e3a79d96c8e15
Reviewed-on: https://go-review.googlesource.com/59710
Reviewed-by: Ian Lance Taylor <iant@golang.org>
When given one argument, as in
go doc binary.BigEndian
doc would search for the package, but when given two, as in
go doc binary BigEndian
it would not. Fix the inconsistency.
Fixes#18697Fixes#18664
Change-Id: Ib59dc483e8d4f91e6061c77a5ec24d0a50e115f0
Reviewed-on: https://go-review.googlesource.com/59413
Reviewed-by: Aliaksandr Valialkin <valyala@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
The assembler barfs on large offsets. Make sure that all the
instructions that need to have their offsets in an int32
1) check on any rule that computes offsets for such instructions
2) change their aux fields so the check builder checks it.
The assembler also silently misassembled offsets between 1<<31
and 1<<32. Add a check in the assembler to barf on those as well.
Fixes#21655
Change-Id: Iebf24bf10f9f37b3ea819ceb7d588251c0f46d7d
Reviewed-on: https://go-review.googlesource.com/59630
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
This is useful when debugging the tool.
Some tweaks on logging: log the webserver address, log.Print instead
of log.Printf when possible.
Change-Id: Iaf71b6523b40dc13795511784d48eacf0f5a396a
Reviewed-on: https://go-review.googlesource.com/59570
Reviewed-by: Heschi Kreinick <heschi@google.com>
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
