When a process is forcefully killed (for example, with SIGKILL on unix), its ProccessState.Exited() will return false.
Change-Id: I8cebc8d28f2ba1b687c145f6d941647fc3a10665
GitHub-Last-Rev: 414ae1980f
GitHub-Pull-Request: golang/go#48871
Reviewed-on: https://go-review.googlesource.com/c/go/+/354698
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Alexander Rakoczy <alex@golang.org>
Run-TryBot: Alexander Rakoczy <alex@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Fixes#43894
Change-Id: I2add7b8a4f6ae69a5ef1c48703fde21a4b74307c
Reviewed-on: https://go-review.googlesource.com/c/go/+/321852
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Exposes ErrProcessDone variable in windows and plan9
also returns this error code instead of
errors.New("os: process already finished")
Fixes#42311
Change-Id: Ie807b6526e7b6c27636e6bffe5ff0c904b319be4
GitHub-Last-Rev: 2153e0d702
GitHub-Pull-Request: golang/go#42313
Reviewed-on: https://go-review.googlesource.com/c/go/+/266997
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Dmitri Shuralyov <dmitshur@golang.org>
It is not clear from documentation what the Process.Kill does. And it
leads to reccuring confusion about Cmd.Start/Wait methods.
Fixes#24220
Change-Id: I66609d21d2954e195d13648014681530eed8ea6c
Reviewed-on: https://go-review.googlesource.com/98715
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
There should not be a comma before "and" in the original text,
because what follows is not a complete sentence. Rewrite.
Change-Id: Ie99f204cc87e911fb46149e2eb65e132fa1eb63a
Reviewed-on: https://go-review.googlesource.com/87020
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
When we write a cached test result, we now also write a log of the
environment variables and files inspected by the test run,
along with a hash of their content. Before reusing a cached test result,
we recompute the hash of the content specified by the log, and only
use the result if that content has not changed.
This makes test caching behave correctly for tests that consult
environment variables or stat or read files or directories.
Fixes#22593.
Change-Id: I8608798e73c90e0c1911a38bf7e03e1232d784dc
Reviewed-on: https://go-review.googlesource.com/81895
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Code movement only.
If someone finds function 'foo' in "foo_linux.go",
they will expect that the Window version of 'foo' exists in "foo_windows.go".
Current code doesn't follow this manner.
For example, 'sameFile' exists in "file_unix.go",
"stat_plan9.go" and "types_windows.go".
The CL address that problem by following rules:
* readdir family => dir.go, dir_$GOOS.go
* stat family => stat.go, stat_$GOOS.go
* path-functions => path_$GOOS.go
* sameFile => types.go, types_$GOOS.go
* process-functions => exec.go, exec_$GOOS.go
* hostname => sys.go, sys_$GOOS.go
Change-Id: Ic3c64663ce0b2a364d7a414351cd3c772e70187b
Reviewed-on: https://go-review.googlesource.com/27035
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
On systems that support the POSIX.1-2008 waitid function, we can use it
to block until a wait will succeed. This avoids a possible race
condition: if a program calls p.Kill/p.Signal and p.Wait from two
different goroutines, then it is possible for the wait to complete just
before the signal is sent. In that case, it is possible that the system
will start a new process using the same PID between the wait and the
signal, causing the signal to be sent to the wrong process. The
Process.isdone field attempts to avoid that race, but there is a small
gap of time between when wait returns and isdone is set when the race
can occur.
This CL avoids that race by using waitid to wait until the process has
exited without actually collecting the PID. Then it sets isdone, then
waits for any active signals to complete, and only then collects the PID.
No test because any plausible test would require starting enough
processes to recycle all the process IDs.
Update #13987.
Update #16028.
Change-Id: Id2939431991d3b355dfb22f08793585fc0568ce8
Reviewed-on: https://go-review.googlesource.com/23967
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
The tree's pretty inconsistent about single space vs double space
after a period in documentation. Make it consistently a single space,
per earlier decisions. This means contributors won't be confused by
misleading precedence.
This CL doesn't use go/doc to parse. It only addresses // comments.
It was generated with:
$ perl -i -npe 's,^(\s*// .+[a-z]\.) +([A-Z]),$1 $2,' $(git grep -l -E '^\s*//(.+\.) +([A-Z])')
$ go test go/doc -update
Change-Id: Iccdb99c37c797ef1f804a94b22ba5ee4b500c4f7
Reviewed-on: https://go-review.googlesource.com/20022
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Dave Day <djd@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Process.handle was accessed without synchronization while wait() and
signal() could be called concurrently.
A first solution was to add a Mutex in Process but it was probably too
invasive given Process.handle is only used on Windows.
This version uses atomic operations to read the handle value. There is
still a race between isDone() and the value of the handle, but it only
leads to slightly incorrect error codes. The caller may get a:
errors.New("os: process already finished")
instead of:
syscall.EINVAL
which sounds harmless.
Fixes#9382
Change-Id: Iefcc687a1166d5961c8f27154647b9b15a0f748a
Reviewed-on: https://go-review.googlesource.com/9904
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Run-TryBot: Alex Brainman <alex.brainman@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Forest Johnson
Ian Lance Taylor
Alwin Doss
Yury Smolsky
Austin Clements
Russ Cox
Brad Fitzpatrick
Hiroshi Ioka
Patrick Mezard