Same idea as heap profile: how did each thread get created?
Low memory (256 bytes per OS thread), high reward for
programs that suddenly have many threads running.
Fixes#1477.
R=golang-dev, r, dvyukov
CC=golang-dev
https://golang.org/cl/5639059
This changes makes constant propagation compare 'from' values using node
pointers rather than symbol names when checking to see whether a set
operation is redundant. When a function is inlined multiple times in a
calling function its arguments will share symbol names even though the values
are different. Prior to this fix the bug409 test would hit a case with 6g
where an LEAQ instruction was incorrectly eliminated from the second inlined
function call. 8g appears to have had the same bug, but the test did not fail
there.
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5646044
Be careful when printing line comments with incorrect
position information. Maintain additional state
impliedSemi: when set, a comment containing a newline
would imply a semicolon and thus placement must be
delayed.
Precompute state information pertaining to the next
comment for faster checks (the printer is marginally
faster now despite additional checks for each comment).
No effect on existing src, misc sources.
Fixes#1505.
R=rsc
CC=golang-dev
https://golang.org/cl/5598054
Commands such as "dist version > VERSION" will cause
the shell to create an empty VERSION file and set dist's
stdout to its fd. dist in turn looks at VERSION and uses
its content if available, which is empty at this point.
Fix that by ignoring VERSION if it's empty.
Also prevent cmdversion from running findgoversion a
second time. It was already loaded by init.
R=adg, gustavo, rsc
CC=golang-dev
https://golang.org/cl/5639044
As a convenience to people working on the tools,
leave Makefiles that invoke the go dist tool appropriately.
They are not used during the build.
R=golang-dev, bradfitz, n13m3y3r, gustavo
CC=golang-dev
https://golang.org/cl/5636050
This is the same heuristic that build.ScanDir uses.
It avoids considering 'resource fork' files on OS X;
the resource for x.go is ._x.go.
R=gri
CC=golang-dev
https://golang.org/cl/5616073
Unexports runtime.MemStats and rename MemStatsType to MemStats.
The new accessor requires passing a pointer to a user-allocated
MemStats structure.
Fixes#2572.
R=bradfitz, rsc, bradfitz, gustavo
CC=golang-dev, remy
https://golang.org/cl/5616072
Passing the CGO_CFLAGS to cgo is required to make alternative include
directories work when building a cgo project.
R=rsc
CC=golang-dev
https://golang.org/cl/5635048
This fix makes the goFilesPackage helper function print the errors from
package imports and exit similar to how the packagesForBuild function does.
Without this change, when invoking "go build *.go" with, for example,
an old import path, the following stack trace is generated:
panic: runtime error: invalid memory address or nil pointer dereference
goroutine 1 [running]:
go/build.(*Tree).PkgDir(...)
/opt/go/src/pkg/go/build/path.go:52 +0xfb
main.(*builder).action(...)
/opt/go/src/cmd/go/build.go:327 +0xb8
main.(*builder).action(...)
/opt/go/src/cmd/go/build.go:335 +0x208
main.runBuild(...)
/opt/go/src/cmd/go/build.go:129 +0x386
main.main()
/opt/go/src/cmd/go/main.go:126 +0x2d8
Fixes#2865.
R=rsc, dvyukov, r
CC=golang-dev
https://golang.org/cl/5624052
Flush stdout before writing to stderr, to avoid
reordering output.
Allow amd64 from uname -m (FreeBSD).
TBR=golang-dev
CC=golang-dev
https://golang.org/cl/5629051
goc2c moves here.
parallel builds like old makefiles (-j4).
add clean command.
add banner command.
implement Go version check.
real argument parsing (same as 6g etc)
Windows changes will be a separate CL.
R=golang-dev, bradfitz, iant
CC=golang-dev
https://golang.org/cl/5622058
Thanks to Andrey Mirtchovski for tracking this down.
This was broken by CL 5528077 which removed the InsertSemis
flag from go/scanner - as a result, semicolons are now always
inserted and the respective indexer code checked for the
wrong token.
Replaced the code by a direct identifier test.
R=rsc
CC=golang-dev
https://golang.org/cl/5606065
The go- is redundant now that the directory is required
to be inside $GOROOT. Rob LGTMed the idea.
R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/5618044
This reduces the overhead necessary to work with OS-specific
file details, hides the implementation of FileStat, and
preserves the implementation-specific nature of Sys.
Expressions such as:
stat.(*os.FileInfo).Sys.(*syscall.Stat_t).Uid
fi1.(*os.FileStat).SameFile(fi2.(*os.FileStat))
Are now spelled as::
stat.Sys().(*syscall.Stat_t).Uid
os.SameFile(fi1, fi2)
R=cw, bradfitz, rsc
CC=golang-dev
https://golang.org/cl/5448079
dist is short for distribution. This is the new Go distribution tool.
The plan is to replace the Makefiles with what amounts to
'go tool dist bootstrap', although it cannot be invoked like
that since it is in charge of getting us to the point where we
can build the go command.
It will also add additional commands to replace bash scripts
like test/run (go tool dist testrun), eventually eliminating our
dependence on not just bash but all the Unix tools and all
of cygwin.
This is strong enough to build (cc *.c) and run (a.out bootstrap)
to build not just the C libraries and tools but also the basic
Go packages up to the bootstrap form of the go command
(go_bootstrap). I've run it successfully on both Linux and Windows.
This means that once we've switched to this tool in the build,
we can delete the buildscripts.
This tool is not nearly as nice as the go tool. There are many
special cases that turn into simple if statements or tables in
the code. Please forgive that. C does not enjoy the benefits
that we designed into Go.
I was planning to wait to do this until after Go 1, but the
Windows builders are both broken due to a bug in either
make or bash or both involving the parsing of quoted command
arguments. Make thinks it is invoking
quietgcc -fno-common -I"c:/go/include" -ggdb -O2 -c foo.c
but bash (quietgcc is a bash script) thinks it is being invoked as
quietgcc -fno-common '-Ic:/go/include -ggdb' -O2 -c foo.c
which obviously does not have the desired effect. Rather than fight
these clumsy ports, I accelerated the schedule for the new tool.
We should be completely off cygwin (using just the mingw gcc port,
which is much more standalone) before Go 1.
It is big for a single CL, and for that I apologize. I can cut it into
separate CLs along file boundaries if people would prefer that.
R=golang-dev, adg, gri, bradfitz, alex.brainman, dsymonds, iant, ality, hcwfrichter
CC=golang-dev
https://golang.org/cl/5620045
Shenghou Ma
Robert Griesemer
Dmitriy Vyukov
Russ Cox
Jamie Gennis
Brad Fitzpatrick
Rob Pike
Nigel Tao
Gustavo Niemeyer
Rémy Oudompheng
Anthony Martin
Sanjay Menakuru
Jeff Hodges
Luuk van Dijk
Kyle Lemons
Alex Brainman
Mikio Hara