Generated by a+c.

R=gobot
CC=golang-codereviews
https://golang.org/cl/134330043

The two converted files were nearly identical.
Instead of continuing that duplication, I merged them
into a single traceback.go.

Tested on arm, amd64, amd64p32, and 386.

LGTM=r
R=golang-codereviews, remyoudompheng, dave, r
CC=dvyukov, golang-codereviews, iant, khr
https://golang.org/cl/134200044

The code I wrote originally works for trivial functions
that are inlined at a call site in another package,
because that was how I wrote my local test.
Make hex(x) work for non-inlinable functions too.

LGTM=iant
R=golang-codereviews, iant
CC=golang-codereviews, r
https://golang.org/cl/140830043

LGTM=bradfitz
R=golang-codereviews, bradfitz
CC=golang-codereviews
https://golang.org/cl/133460043

Previously, if all connections were busy, we would always
re-prepare the statement on the connection we were assigned from
the pool.  That meant that if all connections were busy most of the
time, the number of prepared statements for each connection would
keep increasing over time.

Instead, after getting a free connection, check to see if the
statement has already been prepared on it, and reuse the statement
handle if so.

LGTM=bradfitz
R=golang-codereviews, gobot, bradfitz
CC=golang-codereviews
https://golang.org/cl/116930043

LGTM=bradfitz, rsc
R=golang-codereviews, bradfitz, rsc
CC=golang-codereviews, khr
https://golang.org/cl/133240043

LGTM=dvyukov, rsc
R=golang-codereviews, dvyukov, rsc
CC=golang-codereviews
https://golang.org/cl/132440043

LGTM=rsc
R=dvyukov, rsc
CC=golang-codereviews
https://golang.org/cl/140110043

LGTM=rsc
R=rsc, ality
CC=golang-codereviews
https://golang.org/cl/137030043

It looks like this has just always been broken:
the race detector handles running Go code on g0 of the main thread
and on g0 of any extra threads created by non-Go code, but it does
not handle running Go code on g0 of non-main threads created by Go.
Handle that.

Should fix the race build failures on the dashboard.

We're running into this now because we are running more
and more Go code on g0.

TBR=dvyukov
CC=golang-codereviews
https://golang.org/cl/137910043

The file in repo has been updated recently, but all these changes
are gone off the web site now. It seems web site gets updated once
in a while, so we'll update our file occasionally.

LGTM=r
R=golang-codereviews, r
CC=golang-codereviews
https://golang.org/cl/140780043

Fixes #8626.

LGTM=bradfitz
R=golang-codereviews
CC=bradfitz, golang-codereviews, iant, r
https://golang.org/cl/137050043

The exported Go definitions appearing in mprof.go are
copied verbatim from debug.go.

The unexported Go funcs and types are new.
The C Bucket type used a union and was not a line-for-line translation.

LGTM=remyoudompheng
R=golang-codereviews, remyoudompheng
CC=dvyukov, golang-codereviews, iant, khr, r
https://golang.org/cl/137040043

#ifdef'ed out code wasn't updated for argp change.

TBR=iant
CC=golang-codereviews
https://golang.org/cl/139040043

It was a throw originally; it was converted incorrectly.

LGTM=dave
R=khr, dave
CC=golang-codereviews
https://golang.org/cl/139000043

Adding the #include to defs.c makes it get processed
by cmd/dist, which writes out Go equivalent for all the
C data structures defined in defs.c.

This in turn makes it necessary to define the Plink type,
used in os_plan9.h, in os_plan9.go. Rename it to _Plink
to avoid being exported.

LGTM=0intro, iant
R=golang-codereviews, iant, 0intro
CC=golang-codereviews, r
https://golang.org/cl/132490043

uintptr is better when translating to Go,
and in a few places it's better in C too.

LGTM=r
R=golang-codereviews, r
CC=golang-codereviews, iant, khr
https://golang.org/cl/138980043

This change fixes the last known false negative of the race detector --
detection of races between mutating atomic operations and non-atomic operations.
Race runtime already has functions for precise modelling of various atomic operations,
so this change just forwards all atomic ops to race runtime
instead of poor man modeling in sync/atomic package.
Performance is also improved -- full sync/atomic tests run in 60s instead of 85s now.

LGTM=khr
R=golang-codereviews, khr
CC=golang-codereviews, rsc
https://golang.org/cl/111310044

benchmark                  old ns/op     new ns/op     delta
BenchmarkSingleMatch       49443         52275         +5.73%
BenchmarkIndex             28.8          27.4          -4.86%
BenchmarkLastIndex         14.5          14.0          -3.45%
BenchmarkLastIndexHard1    3982782       2309200       -42.02%
BenchmarkLastIndexHard2    3985562       2287715       -42.60%
BenchmarkLastIndexHard3    3555259       2282866       -35.79%

LGTM=josharian, nigeltao
R=golang-codereviews, ality, josharian, bradfitz, dave, nigeltao, gobot, nightlyone
CC=golang-codereviews
https://golang.org/cl/102560043

These haven't been run in ages.

LGTM=bradfitz
R=golang-codereviews, bradfitz
CC=golang-codereviews, iant, khr, r
https://golang.org/cl/134170043

This is needed for callers to be able to keep track of the
writing position within a zip file. Otherwise it's not
possible to compute the size of headers, and the TOC isn't
written until the very end.

LGTM=adg
R=adg
CC=golang-codereviews
https://golang.org/cl/134210043

NO CODE CHANGES HERE

The first conversion was not complete.
This CL doesn't make any actual changes,
but it inserts the missing mprof.goc code
as comments so that the next CL will have
useful diffs.

To make the diffs a bit more useful, removed
all semicolons, ->, and runtime· prefixes as well.

Also corrected order of a few functions in mprof.go
to match original order in mprof.goc.

LGTM=bradfitz
R=golang-codereviews, bradfitz
CC=golang-codereviews, iant, khr, r
https://golang.org/cl/134200043

The [568]c compilers no longer support packed structs, so
using them with -cdefs no longer works.  Just commenting out
the test, rather than removing it, in case this needs to be
handled.  It may be that -cdefs can go away entirely in the
future, in which case so can this directory.

LGTM=mdempsky
R=rsc, mdempsky
CC=golang-codereviews
https://golang.org/cl/136030043

For example:
go build -ldflags -C cmd/go 2>&1 | awk '{print $NF}' | sort | uniq -c | sort -nr

LGTM=khr
R=khr, josharian
CC=golang-codereviews
https://golang.org/cl/135170044

LGTM=adg
R=golang-codereviews, adg
CC=golang-codereviews
https://golang.org/cl/138960043

positive numbers to mean a numeric zlib compression level.

LGTM=bradfitz, ruiu
R=bradfitz, ruiu
CC=golang-codereviews, jeff.allen
https://golang.org/cl/138860043

Make the definition of the EpollEvent data field consistent
across architectures, adapt the other use of it in
netpoll_epoll for the new definition, and use uint64 rather
than uintptr.

LGTM=dave
R=rsc, dave
CC=golang-codereviews
https://golang.org/cl/137890043

We can't translate misaligned things to Go, so start rejecting them in C.

The only one in any build appears to be EpollEvent on linux/amd64.
Fix that.

LGTM=r
R=golang-codereviews, r, dvyukov
CC=golang-codereviews, iant
https://golang.org/cl/137020043

In an earlier CL I wrote a separate Go-only version, but that broke Plan 9,
because the Go-only version assumed a non-Plan 9 system.

Translate the real ones instead.

LGTM=r
R=golang-codereviews, r
CC=0intro, golang-codereviews, iant, khr
https://golang.org/cl/140050044

Under the race detector most of the samples go into race runtime,
because of that freebsd race builder constantly fails on this test.

LGTM=bradfitz, rsc
R=golang-codereviews, bradfitz, rsc
CC=golang-codereviews, minux
https://golang.org/cl/133370043

This avoids allocating at the panic sites.

LGTM=r, khr
R=golang-codereviews, r, khr
CC=dvyukov, golang-codereviews, iant, khr
https://golang.org/cl/136020043

LGTM=rsc, dvyukov
R=golang-codereviews, bradfitz, rsc, dvyukov
CC=golang-codereviews
https://golang.org/cl/136980044

See RFC 3986 §3.2.1.
Fixes #6573.

LGTM=bradfitz
R=golang-codereviews, bradfitz
CC=golang-codereviews
https://golang.org/cl/126560043

Fixes script used to sanity-check the heading-detection heuristic of go/doc.
Fixes #8467.

LGTM=gri
R=golang-codereviews, gobot, gri
CC=golang-codereviews
https://golang.org/cl/128720043

LGTM=gri
R=golang-codereviews, bradfitz, gri
CC=golang-codereviews
https://golang.org/cl/133330043

Tested on linux/amd64 too this time.

LGTM=bradfitz
R=golang-codereviews, bradfitz
CC=dave, golang-codereviews, iant, rsc
https://golang.org/cl/140050043

The net/http package supports setting the HTTP Authorization header
using the Basic Authentication Scheme as defined in RFC 2617, but does
not provide support for extracting the username and password from an
authenticated request using the Basic Authentication Scheme.

Add BasicAuth method to *http.Request that returns the username and
password from authenticated requests using the Basic Authentication
Scheme.

Fixes #6779.

LGTM=bradfitz
R=golang-codereviews, josharian, bradfitz, alberto.garcia.hierro, blakesgentry
CC=golang-codereviews
https://golang.org/cl/76540043

In CL 131450043, which raised it to 160,
I'd raise it to 192 if necessary.
Apparently it is necessary on windows/amd64.

One note for those concerned about the growth:
in the old segmented stack world, we wasted this much
space at the bottom of every stack segment.
In the new contiguous stack world, each goroutine has
only one stack segment, so we only waste this much space
once per goroutine. So even raising the limit further might
still be a net savings.

Fixes windows/amd64 build.

TBR=r
CC=golang-codereviews
https://golang.org/cl/132480043

Renaming the C SysAlloc will let Go define a prototype without exporting it.
For use in cpuprof.goc's translation to Go.

LGTM=mdempsky
R=golang-codereviews, mdempsky
CC=golang-codereviews, iant
https://golang.org/cl/140060043

Actually it mostly deletes code -- alg.print and alg.copy go away.
There was only one usage of alg.print for debug purposes.
Alg.copy is used in chan.goc, but Keith replaces them with
memcopy during conversion, so alg.copy is not needed as well.
Converting them would be significant amount of work
for no visible benefit.

LGTM=crawshaw, rsc, khr
R=golang-codereviews, crawshaw, khr
CC=golang-codereviews, rsc
https://golang.org/cl/139930044