Besides being more correct, it protects against people accidentally
exchanging the permission and open mode arguments to Open.
R=rsc
CC=golang-dev
https://golang.org/cl/1904045
Goroutine 1:
Call Read on read half of pipe, entering pipeHalf.rw.
Check ioclosed field, which is false.
Send data to p.c1
Wait for response on p.c2.
Goroutine 2:
Call Close on read half of pipe, entering pipeHalf.close.
Set closed field.
Send error to p.cclose.
Set ioclosed field.
Send 1 to p.done.
Return and exit goroutine.
Goroutine 3:
This is the goroutine running pipe.run, and for some reason
it has started late.
Read error from p.rclose; set rerr and continue.
Read 1 from p.done; increment ndone and continue.
Read data from r1 (sent by goroutine 1); set r1 = nil and continue
Now goroutine 1 is waiting for a response, and goroutine 3 is
waiting for something else to happen.
This patch fixes the race by having the runner check whether
the read half is closed when it is asked for read data, and
similarly for the corresponding race on the write half.
This patch also fixes the similar race in which ndone gets
bumped up to 2 while there is a reader or writer waiting.
There is still another race to fix. It is possible for the
read half and the write half to both be closed, and for the
runner goroutine to exit, all before the runner goroutine sees
the request from a reader. E.g., in the above, have goroutine
2 also close the write half, and have goroutine 3 see both
done messages before it sees the request from goroutine 1.
R=rsc
CC=golang-dev
https://golang.org/cl/1862045
One goroutine started up and was waiting in rw. Then another
goroutine decided to close the pipe. The closing goroutine
stalled calling p.io.Lock() in pipeHalf.close. (This happened
in gccgo). If the closing goroutine had been able to set the
ioclosed flag, it would have gone on to tell the runner that
the pipe was closed, which would then send an EINVAL to the
goroutine sleeping in rw. Unlocking p.io before sleeping in
rw avoids the race.
R=rsc, rsc1
CC=golang-dev
https://golang.org/cl/1682048
* renamed channels to say what gets sent
* use channel closed status instead of racy check of boolean
R=nigeltao_golang
CC=golang-dev
https://golang.org/cl/196065
parsing and printing to new syntax.
Use -oldparser to parse the old syntax,
use -oldprinter to print the old syntax.
2) Change default gofmt formatting settings
to use tabs for indentation only and to use
spaces for alignment. This will make the code
alignment insensitive to an editor's tabwidth.
Use -spaces=false to use tabs for alignment.
3) Manually changed src/exp/parser/parser_test.go
so that it doesn't try to parse the parser's
source files using the old syntax (they have
new syntax now).
4) gofmt -w src misc test/bench
3rd set of files.
R=rsc
CC=golang-dev
https://golang.org/cl/180048
Use them in Copy and Copyn.
Speed up ReadFile by using ReadFrom and avoiding Copy altogether (a minor win).
R=rsc, gri
CC=golang-dev
https://golang.org/cl/166041
the bash scripts and makefiles for building go didn't take into account
the fact $GOROOT / $GOBIN could both be directories containing whitespaces,
and was not possible to build it in such a situation.
this commit adjusts the various makefiles/scripts to make it aware of that
possibility, and now it builds successfully when using a path with whitespaces
as well.
Fixes#115.
R=rsc, dsymonds1
https://golang.org/cl/157067
- enabled for function declarations (not just function literals)
- applied gofmt -w $GOROOT/src
(look for instance at src/pkg/debug/elf/elf.go)
R=r, rsc
CC=go-dev
http://go/go-review/1026006
whole-package compilation. new Makefiles,
tests now in separate package
bytes
flag
fmt
io
math
once
os
reflect
strconv
sync
time
utf8
delete import "xxx" in package xxx.
inside package xxx, xxx is not declared
anymore so s/xxx.//g
delete file and package level forward declarations.
note the new internal_test.go and sync
and strconv to provide public access to
internals during testing. the installed version
of the package omits that file and thus does
not open the internals to all clients.
R=r
OCL=33065
CL=33097
echo back context of call in error if likely to be useful.
For example, if os.Open("/etc/passwd", os.O_RDONLY)
fails with syscall.EPERM, it returns as the os.Error
&PathError{
Op: "open",
Path: "/etc/passwd"
Error: os.EPERM
}
which formats as
open /etc/passwd: permission denied
Not converted:
datafmt
go/...
google/...
regexp
tabwriter
template
R=r
DELTA=1153 (561 added, 156 deleted, 436 changed)
OCL=30738
CL=30781
