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cloudflared-mirror
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TUN-4356: Set AUTOMAXPROCS to the CPU limit when running in a Linux container

This commit is contained in:
Adam Chalmers 2021-05-06 12:22:43 -05:00 committed by Areg Harutyunyan
parent 209091da39
commit 07af2a33b7
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GPG Key ID: 97A3DFFE8E9320B7
28 changed files with 1244 additions and 0 deletions
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1
cmd/cloudflared/main.go
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@ -10,6 +10,7 @@ import (
homedir "github.com/mitchellh/go-homedir"
"github.com/pkg/errors"
"github.com/urfave/cli/v2"
_ "go.uber.org/automaxprocs"
"github.com/cloudflare/cloudflared/cmd/cloudflared/access"
"github.com/cloudflare/cloudflared/cmd/cloudflared/cliutil"

1
go.mod
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@ -43,6 +43,7 @@ require (
github.com/russross/blackfriday/v2 v2.1.0 // indirect
github.com/stretchr/testify v1.6.0
github.com/urfave/cli/v2 v2.2.0
go.uber.org/automaxprocs v1.4.0
golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a
golang.org/x/net v0.0.0-20200904194848-62affa334b73
golang.org/x/oauth2 v0.0.0-20200902213428-5d25da1a8d43 // indirect

2
go.sum
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@ -609,6 +609,8 @@ go.opencensus.io v0.22.4/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
go.uber.org/atomic v1.3.2/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
go.uber.org/atomic v1.5.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ=
go.uber.org/atomic v1.6.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ=
go.uber.org/automaxprocs v1.4.0 h1:CpDZl6aOlLhReez+8S3eEotD7Jx0Os++lemPlMULQP0=
go.uber.org/automaxprocs v1.4.0/go.mod h1:/mTEdr7LvHhs0v7mjdxDreTz1OG5zdZGqgOnhWiR/+Q=
go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
go.uber.org/multierr v1.3.0/go.mod h1:VgVr7evmIr6uPjLBxg28wmKNXyqE9akIJ5XnfpiKl+4=
go.uber.org/multierr v1.5.0/go.mod h1:FeouvMocqHpRaaGuG9EjoKcStLC43Zu/fmqdUMPcKYU=

14
vendor/go.uber.org/automaxprocs/.codecov.yml generated vendored Normal file
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@ -0,0 +1,14 @@
coverage:
range: 80..100
round: down
precision: 2
status:
project: # measuring the overall project coverage
default: # context, you can create multiple ones with custom titles
enabled: yes # must be yes|true to enable this status
target: 90% # specify the target coverage for each commit status
# option: "auto" (must increase from parent commit or pull request base)
# option: "X%" a static target percentage to hit
if_not_found: success # if parent is not found report status as success, error, or failure
if_ci_failed: error # if ci fails report status as success, error, or failure

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vendor/go.uber.org/automaxprocs/.gitignore generated vendored Normal file
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@ -0,0 +1,33 @@
# Compiled Object files, Static and Dynamic libs (Shared Objects)
*.o
*.a
*.so
# Folders
_obj
_test
vendor
# Architecture specific extensions/prefixes
*.[568vq]
[568vq].out
*.cgo1.go
*.cgo2.c
_cgo_defun.c
_cgo_gotypes.go
_cgo_export.*
_testmain.go
*.exe
*.test
*.prof
*.pprof
*.out
*.log
coverage.txt
/bin
cover.out
cover.html

24
vendor/go.uber.org/automaxprocs/.travis.yml generated vendored Normal file
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@ -0,0 +1,24 @@
language: go
sudo: false
go_import_path: go.uber.org/automaxprocs
env:
global:
- GO111MODULE=on
matrix:
include:
- go: oldstable
- go: stable
env: LINT=1
install:
- make install
script:
- test -z "$LINT" || make lint
- make test
after_success:
- make cover
- bash <(curl -s https://codecov.io/bash)

26
vendor/go.uber.org/automaxprocs/CHANGELOG.md generated vendored Normal file
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@ -0,0 +1,26 @@
# Changelog
## v1.4.0 (2021-02-01)
- Support colons in cgroup names.
- Remove linters from runtime dependencies.
## v1.3.0 (2020-01-23)
- Migrate to Go modules.
## v1.2.0 (2018-02-22)
- Fixed quota clamping to always round down rather than up; Rather than
guaranteeing constant throttling at saturation, instead assume that the
fractional CPU was added as a hedge for factors outside of Go's scheduler.
## v1.1.0 (2017-11-10)
- Log the new value of `GOMAXPROCS` rather than the current value.
- Make logs more explicit about whether `GOMAXPROCS` was modified or not.
- Allow customization of the minimum `GOMAXPROCS`, and modify default from 2 to 1.
## v1.0.0 (2017-08-09)
- Initial release.

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vendor/go.uber.org/automaxprocs/CODE_OF_CONDUCT.md generated vendored Normal file
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@ -0,0 +1,75 @@
# Contributor Covenant Code of Conduct
## Our Pledge
In the interest of fostering an open and welcoming environment, we as
contributors and maintainers pledge to making participation in our project and
our community a harassment-free experience for everyone, regardless of age,
body size, disability, ethnicity, gender identity and expression, level of
experience, nationality, personal appearance, race, religion, or sexual
identity and orientation.
## Our Standards
Examples of behavior that contributes to creating a positive environment
include:
* Using welcoming and inclusive language
* Being respectful of differing viewpoints and experiences
* Gracefully accepting constructive criticism
* Focusing on what is best for the community
* Showing empathy towards other community members
Examples of unacceptable behavior by participants include:
* The use of sexualized language or imagery and unwelcome sexual attention or
advances
* Trolling, insulting/derogatory comments, and personal or political attacks
* Public or private harassment
* Publishing others' private information, such as a physical or electronic
address, without explicit permission
* Other conduct which could reasonably be considered inappropriate in a
professional setting
## Our Responsibilities
Project maintainers are responsible for clarifying the standards of acceptable
behavior and are expected to take appropriate and fair corrective action in
response to any instances of unacceptable behavior.
Project maintainers have the right and responsibility to remove, edit, or
reject comments, commits, code, wiki edits, issues, and other contributions
that are not aligned to this Code of Conduct, or to ban temporarily or
permanently any contributor for other behaviors that they deem inappropriate,
threatening, offensive, or harmful.
## Scope
This Code of Conduct applies both within project spaces and in public spaces
when an individual is representing the project or its community. Examples of
representing a project or community include using an official project e-mail
address, posting via an official social media account, or acting as an
appointed representative at an online or offline event. Representation of a
project may be further defined and clarified by project maintainers.
## Enforcement
Instances of abusive, harassing, or otherwise unacceptable behavior may be
reported by contacting the project team at oss-conduct@uber.com. The project
team will review and investigate all complaints, and will respond in a way
that it deems appropriate to the circumstances. The project team is obligated
to maintain confidentiality with regard to the reporter of an incident.
Further details of specific enforcement policies may be posted separately.
Project maintainers who do not follow or enforce the Code of Conduct in good
faith may face temporary or permanent repercussions as determined by other
members of the project's leadership.
## Attribution
This Code of Conduct is adapted from the [Contributor Covenant][homepage],
version 1.4, available at
[http://contributor-covenant.org/version/1/4][version].
[homepage]: http://contributor-covenant.org
[version]: http://contributor-covenant.org/version/1/4/

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vendor/go.uber.org/automaxprocs/CONTRIBUTING.md generated vendored Normal file
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@ -0,0 +1,81 @@
# Contributing
We'd love your help improving this package!
If you'd like to add new exported APIs, please [open an issue][open-issue]
describing your proposal &mdash; discussing API changes ahead of time makes
pull request review much smoother. In your issue, pull request, and any other
communications, please remember to treat your fellow contributors with
respect! We take our [code of conduct](CODE_OF_CONDUCT.md) seriously.
Note that you'll need to sign [Uber's Contributor License Agreement][cla]
before we can accept any of your contributions. If necessary, a bot will remind
you to accept the CLA when you open your pull request.
## Setup
[Fork][fork], then clone the repository:
```
mkdir -p $GOPATH/src/go.uber.org
cd $GOPATH/src/go.uber.org
git clone git@github.com:your_github_username/automaxprocs.git
cd automaxprocs
git remote add upstream https://github.com/uber-go/automaxprocs.git
git fetch upstream
```
Install the test dependencies:
```
make dependencies
```
Make sure that the tests and the linters pass:
```
make test
make lint
```
If you're not using the minor version of Go specified in the Makefile's
`LINTABLE_MINOR_VERSIONS` variable, `make lint` doesn't do anything. This is
fine, but it means that you'll only discover lint failures after you open your
pull request.
## Making Changes
Start by creating a new branch for your changes:
```
cd $GOPATH/src/go.uber.org/automaxprocs
git checkout master
git fetch upstream
git rebase upstream/master
git checkout -b cool_new_feature
```
Make your changes, then ensure that `make lint` and `make test` still pass. If
you're satisfied with your changes, push them to your fork.
```
git push origin cool_new_feature
```
Then use the GitHub UI to open a pull request.
At this point, you're waiting on us to review your changes. We *try* to respond
to issues and pull requests within a few business days, and we may suggest some
improvements or alternatives. Once your changes are approved, one of the
project maintainers will merge them.
We're much more likely to approve your changes if you:
* Add tests for new functionality.
* Write a [good commit message][commit-message].
* Maintain backward compatibility.
[fork]: https://github.com/uber-go/automaxprocs/fork
[open-issue]: https://github.com/uber-go/automaxprocs/issues/new
[cla]: https://cla-assistant.io/uber-go/automaxprocs
[commit-message]: http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html

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vendor/go.uber.org/automaxprocs/LICENSE generated vendored Normal file
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@ -0,0 +1,19 @@
Copyright (c) 2017 Uber Technologies, Inc.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

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vendor/go.uber.org/automaxprocs/Makefile generated vendored Normal file
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@ -0,0 +1,46 @@
export GOBIN ?= $(shell pwd)/bin
GO_FILES := $(shell \
find . '(' -path '*/.*' -o -path './vendor' ')' -prune \
-o -name '*.go' -print | cut -b3-)
GOLINT = $(GOBIN)/golint
STATICCHECK = $(GOBIN)/staticcheck
.PHONY: build
build:
go build ./...
.PHONY: install
install:
go mod download
.PHONY: test
test:
go test -race ./...
.PHONY: cover
cover:
go test -coverprofile=cover.out -covermode=atomic -coverpkg=./... ./...
go tool cover -html=cover.out -o cover.html
$(GOLINT): tools/go.mod
cd tools && go install golang.org/x/lint/golint
$(STATICCHECK): tools/go.mod
cd tools && go install honnef.co/go/tools/cmd/staticcheck
.PHONY: lint
lint: $(GOLINT) $(STATICCHECK)
@rm -rf lint.log
@echo "Checking gofmt"
@gofmt -d -s $(GO_FILES) 2>&1 | tee lint.log
@echo "Checking go vet"
@go vet ./... 2>&1 | tee -a lint.log
@echo "Checking golint"
@$(GOLINT) ./... | tee -a lint.log
@echo "Checking staticcheck"
@$(STATICCHECK) ./... 2>&1 | tee -a lint.log
@echo "Checking for license headers..."
@./.build/check_license.sh | tee -a lint.log
@[ ! -s lint.log ]

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vendor/go.uber.org/automaxprocs/README.md generated vendored Normal file
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@ -0,0 +1,46 @@
# automaxprocs [![GoDoc][doc-img]][doc] [![Build Status][ci-img]][ci] [![Coverage Status][cov-img]][cov]
Automatically set `GOMAXPROCS` to match Linux container CPU quota.
## Installation
`go get -u go.uber.org/automaxprocs`
## Quick Start
```go
import _ "go.uber.org/automaxprocs"
func main() {
// Your application logic here.
}
```
## Development Status: Stable
All APIs are finalized, and no breaking changes will be made in the 1.x series
of releases. Users of semver-aware dependency management systems should pin
automaxprocs to `^1`.
## Contributing
We encourage and support an active, healthy community of contributors &mdash;
including you! Details are in the [contribution guide](CONTRIBUTING.md) and
the [code of conduct](CODE_OF_CONDUCT.md). The automaxprocs maintainers keep
an eye on issues and pull requests, but you can also report any negative
conduct to oss-conduct@uber.com. That email list is a private, safe space;
even the automaxprocs maintainers don't have access, so don't hesitate to hold
us to a high standard.
<hr>
Released under the [MIT License](LICENSE).
[doc-img]: https://godoc.org/go.uber.org/automaxprocs?status.svg
[doc]: https://godoc.org/go.uber.org/automaxprocs
[ci-img]: https://travis-ci.com/uber-go/automaxprocs.svg?branch=master
[ci]: https://travis-ci.com/uber-go/automaxprocs
[cov-img]: https://codecov.io/gh/uber-go/automaxprocs/branch/master/graph/badge.svg
[cov]: https://codecov.io/gh/uber-go/automaxprocs

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vendor/go.uber.org/automaxprocs/automaxprocs.go generated vendored Normal file
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@ -0,0 +1,33 @@
// Copyright (c) 2017 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// Package automaxprocs automatically sets GOMAXPROCS to match the Linux
// container CPU quota, if any.
package automaxprocs // import "go.uber.org/automaxprocs"
import (
"log"
"go.uber.org/automaxprocs/maxprocs"
)
func init() {
maxprocs.Set(maxprocs.Logger(log.Printf))
}

7
vendor/go.uber.org/automaxprocs/glide.yaml generated vendored Normal file
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@ -0,0 +1,7 @@
package: go.uber.org/automaxprocs
import: []
testImport:
- package: github.com/stretchr/testify
version: ^1.1.4
subpackages:
- assert

9
vendor/go.uber.org/automaxprocs/go.mod generated vendored Normal file
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@ -0,0 +1,9 @@
module go.uber.org/automaxprocs
go 1.13
require (
github.com/kr/pretty v0.1.0 // indirect
github.com/stretchr/testify v1.4.0
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect
)

18
vendor/go.uber.org/automaxprocs/go.sum generated vendored Normal file
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@ -0,0 +1,18 @@
github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

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vendor/go.uber.org/automaxprocs/internal/cgroups/cgroup.go generated vendored Normal file
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@ -0,0 +1,78 @@
// Copyright (c) 2017 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// +build linux
package cgroups
import (
"bufio"
"io"
"os"
"path/filepath"
"strconv"
)
// CGroup represents the data structure for a Linux control group.
type CGroup struct {
path string
}
// NewCGroup returns a new *CGroup from a given path.
func NewCGroup(path string) *CGroup {
return &CGroup{path: path}
}
// Path returns the path of the CGroup*.
func (cg *CGroup) Path() string {
return cg.path
}
// ParamPath returns the path of the given cgroup param under itself.
func (cg *CGroup) ParamPath(param string) string {
return filepath.Join(cg.path, param)
}
// readFirstLine reads the first line from a cgroup param file.
func (cg *CGroup) readFirstLine(param string) (string, error) {
paramFile, err := os.Open(cg.ParamPath(param))
if err != nil {
return "", err
}
defer paramFile.Close()
scanner := bufio.NewScanner(paramFile)
if scanner.Scan() {
return scanner.Text(), nil
}
if err := scanner.Err(); err != nil {
return "", err
}
return "", io.ErrUnexpectedEOF
}
// readInt parses the first line from a cgroup param file as int.
func (cg *CGroup) readInt(param string) (int, error) {
text, err := cg.readFirstLine(param)
if err != nil {
return 0, err
}
return strconv.Atoi(text)
}

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// Copyright (c) 2017 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// +build linux
package cgroups
const (
// _cgroupFSType is the Linux CGroup file system type used in
// `/proc/$PID/mountinfo`.
_cgroupFSType = "cgroup"
// _cgroupSubsysCPU is the CPU CGroup subsystem.
_cgroupSubsysCPU = "cpu"
// _cgroupSubsysCPUAcct is the CPU accounting CGroup subsystem.
_cgroupSubsysCPUAcct = "cpuacct"
// _cgroupSubsysCPUSet is the CPUSet CGroup subsystem.
_cgroupSubsysCPUSet = "cpuset"
// _cgroupSubsysMemory is the Memory CGroup subsystem.
_cgroupSubsysMemory = "memory"
// _cgroupCPUCFSQuotaUsParam is the file name for the CGroup CFS quota
// parameter.
_cgroupCPUCFSQuotaUsParam = "cpu.cfs_quota_us"
// _cgroupCPUCFSPeriodUsParam is the file name for the CGroup CFS period
// parameter.
_cgroupCPUCFSPeriodUsParam = "cpu.cfs_period_us"
)
const (
_procPathCGroup = "/proc/self/cgroup"
_procPathMountInfo = "/proc/self/mountinfo"
)
// CGroups is a map that associates each CGroup with its subsystem name.
type CGroups map[string]*CGroup
// NewCGroups returns a new *CGroups from given `mountinfo` and `cgroup` files
// under for some process under `/proc` file system (see also proc(5) for more
// information).
func NewCGroups(procPathMountInfo, procPathCGroup string) (CGroups, error) {
cgroupSubsystems, err := parseCGroupSubsystems(procPathCGroup)
if err != nil {
return nil, err
}
cgroups := make(CGroups)
newMountPoint := func(mp *MountPoint) error {
if mp.FSType != _cgroupFSType {
return nil
}
for _, opt := range mp.SuperOptions {
subsys, exists := cgroupSubsystems[opt]
if !exists {
continue
}
cgroupPath, err := mp.Translate(subsys.Name)
if err != nil {
return err
}
cgroups[opt] = NewCGroup(cgroupPath)
}
return nil
}
if err := parseMountInfo(procPathMountInfo, newMountPoint); err != nil {
return nil, err
}
return cgroups, nil
}
// NewCGroupsForCurrentProcess returns a new *CGroups instance for the current
// process.
func NewCGroupsForCurrentProcess() (CGroups, error) {
return NewCGroups(_procPathMountInfo, _procPathCGroup)
}
// CPUQuota returns the CPU quota applied with the CPU cgroup controller.
// It is a result of `cpu.cfs_quota_us / cpu.cfs_period_us`. If the value of
// `cpu.cfs_quota_us` was not set (-1), the method returns `(-1, nil)`.
func (cg CGroups) CPUQuota() (float64, bool, error) {
cpuCGroup, exists := cg[_cgroupSubsysCPU]
if !exists {
return -1, false, nil
}
cfsQuotaUs, err := cpuCGroup.readInt(_cgroupCPUCFSQuotaUsParam)
if defined := cfsQuotaUs > 0; err != nil || !defined {
return -1, defined, err
}
cfsPeriodUs, err := cpuCGroup.readInt(_cgroupCPUCFSPeriodUsParam)
if err != nil {
return -1, false, err
}
return float64(cfsQuotaUs) / float64(cfsPeriodUs), true, nil
}

23
vendor/go.uber.org/automaxprocs/internal/cgroups/doc.go generated vendored Normal file
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// Copyright (c) 2017 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// Package cgroups provides utilities to access Linux control group (CGroups)
// parameters (CPU quota, for example) for a given process.
package cgroups

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// Copyright (c) 2017 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// +build linux
package cgroups
import "fmt"
type cgroupSubsysFormatInvalidError struct {
line string
}
type mountPointFormatInvalidError struct {
line string
}
type pathNotExposedFromMountPointError struct {
mountPoint string
root string
path string
}
func (err cgroupSubsysFormatInvalidError) Error() string {
return fmt.Sprintf("invalid format for CGroupSubsys: %q", err.line)
}
func (err mountPointFormatInvalidError) Error() string {
return fmt.Sprintf("invalid format for MountPoint: %q", err.line)
}
func (err pathNotExposedFromMountPointError) Error() string {
return fmt.Sprintf("path %q is not a descendant of mount point root %q and cannot be exposed from %q", err.path, err.root, err.mountPoint)
}

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// Copyright (c) 2017 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// +build linux
package cgroups
import (
"bufio"
"os"
"path/filepath"
"strconv"
"strings"
)
const (
_mountInfoSep = " "
_mountInfoOptsSep = ","
_mountInfoOptionalFieldsSep = "-"
)
const (
_miFieldIDMountID = iota
_miFieldIDParentID
_miFieldIDDeviceID
_miFieldIDRoot
_miFieldIDMountPoint
_miFieldIDOptions
_miFieldIDOptionalFields
_miFieldCountFirstHalf
)
const (
_miFieldOffsetFSType = iota
_miFieldOffsetMountSource
_miFieldOffsetSuperOptions
_miFieldCountSecondHalf
)
const _miFieldCountMin = _miFieldCountFirstHalf + _miFieldCountSecondHalf
// MountPoint is the data structure for the mount points in
// `/proc/$PID/mountinfo`. See also proc(5) for more information.
type MountPoint struct {
MountID int
ParentID int
DeviceID string
Root string
MountPoint string
Options []string
OptionalFields []string
FSType string
MountSource string
SuperOptions []string
}
// NewMountPointFromLine parses a line read from `/proc/$PID/mountinfo` and
// returns a new *MountPoint.
func NewMountPointFromLine(line string) (*MountPoint, error) {
fields := strings.Split(line, _mountInfoSep)
if len(fields) < _miFieldCountMin {
return nil, mountPointFormatInvalidError{line}
}
mountID, err := strconv.Atoi(fields[_miFieldIDMountID])
if err != nil {
return nil, err
}
parentID, err := strconv.Atoi(fields[_miFieldIDParentID])
if err != nil {
return nil, err
}
for i, field := range fields[_miFieldIDOptionalFields:] {
if field == _mountInfoOptionalFieldsSep {
fsTypeStart := _miFieldIDOptionalFields + i + 1
if len(fields) != fsTypeStart+_miFieldCountSecondHalf {
return nil, mountPointFormatInvalidError{line}
}
miFieldIDFSType := _miFieldOffsetFSType + fsTypeStart
miFieldIDMountSource := _miFieldOffsetMountSource + fsTypeStart
miFieldIDSuperOptions := _miFieldOffsetSuperOptions + fsTypeStart
return &MountPoint{
MountID: mountID,
ParentID: parentID,
DeviceID: fields[_miFieldIDDeviceID],
Root: fields[_miFieldIDRoot],
MountPoint: fields[_miFieldIDMountPoint],
Options: strings.Split(fields[_miFieldIDOptions], _mountInfoOptsSep),
OptionalFields: fields[_miFieldIDOptionalFields:(fsTypeStart - 1)],
FSType: fields[miFieldIDFSType],
MountSource: fields[miFieldIDMountSource],
SuperOptions: strings.Split(fields[miFieldIDSuperOptions], _mountInfoOptsSep),
}, nil
}
}
return nil, mountPointFormatInvalidError{line}
}
// Translate converts an absolute path inside the *MountPoint's file system to
// the host file system path in the mount namespace the *MountPoint belongs to.
func (mp *MountPoint) Translate(absPath string) (string, error) {
relPath, err := filepath.Rel(mp.Root, absPath)
if err != nil {
return "", err
}
if relPath == ".." || strings.HasPrefix(relPath, "../") {
return "", pathNotExposedFromMountPointError{
mountPoint: mp.MountPoint,
root: mp.Root,
path: absPath,
}
}
return filepath.Join(mp.MountPoint, relPath), nil
}
// parseMountInfo parses procPathMountInfo (usually at `/proc/$PID/mountinfo`)
// and yields parsed *MountPoint into newMountPoint.
func parseMountInfo(procPathMountInfo string, newMountPoint func(*MountPoint) error) error {
mountInfoFile, err := os.Open(procPathMountInfo)
if err != nil {
return err
}
defer mountInfoFile.Close()
scanner := bufio.NewScanner(mountInfoFile)
for scanner.Scan() {
mountPoint, err := NewMountPointFromLine(scanner.Text())
if err != nil {
return err
}
if err := newMountPoint(mountPoint); err != nil {
return err
}
}
return scanner.Err()
}

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// Copyright (c) 2017 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// +build linux
package cgroups
import (
"bufio"
"os"
"strconv"
"strings"
)
const (
_cgroupSep = ":"
_cgroupSubsysSep = ","
)
const (
_csFieldIDID = iota
_csFieldIDSubsystems
_csFieldIDName
_csFieldCount
)
// CGroupSubsys represents the data structure for entities in
// `/proc/$PID/cgroup`. See also proc(5) for more information.
type CGroupSubsys struct {
ID int
Subsystems []string
Name string
}
// NewCGroupSubsysFromLine returns a new *CGroupSubsys by parsing a string in
// the format of `/proc/$PID/cgroup`
func NewCGroupSubsysFromLine(line string) (*CGroupSubsys, error) {
fields := strings.SplitN(line, _cgroupSep, _csFieldCount)
if len(fields) != _csFieldCount {
return nil, cgroupSubsysFormatInvalidError{line}
}
id, err := strconv.Atoi(fields[_csFieldIDID])
if err != nil {
return nil, err
}
cgroup := &CGroupSubsys{
ID: id,
Subsystems: strings.Split(fields[_csFieldIDSubsystems], _cgroupSubsysSep),
Name: fields[_csFieldIDName],
}
return cgroup, nil
}
// parseCGroupSubsystems parses procPathCGroup (usually at `/proc/$PID/cgroup`)
// and returns a new map[string]*CGroupSubsys.
func parseCGroupSubsystems(procPathCGroup string) (map[string]*CGroupSubsys, error) {
cgroupFile, err := os.Open(procPathCGroup)
if err != nil {
return nil, err
}
defer cgroupFile.Close()
scanner := bufio.NewScanner(cgroupFile)
subsystems := make(map[string]*CGroupSubsys)
for scanner.Scan() {
cgroup, err := NewCGroupSubsysFromLine(scanner.Text())
if err != nil {
return nil, err
}
for _, subsys := range cgroup.Subsystems {
subsystems[subsys] = cgroup
}
}
if err := scanner.Err(); err != nil {
return nil, err
}
return subsystems, nil
}

49
vendor/go.uber.org/automaxprocs/internal/runtime/cpu_quota_linux.go generated vendored Normal file
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@ -0,0 +1,49 @@
// Copyright (c) 2017 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// +build linux
package runtime
import (
"math"
cg "go.uber.org/automaxprocs/internal/cgroups"
)
// CPUQuotaToGOMAXPROCS converts the CPU quota applied to the calling process
// to a valid GOMAXPROCS value.
func CPUQuotaToGOMAXPROCS(minValue int) (int, CPUQuotaStatus, error) {
cgroups, err := cg.NewCGroupsForCurrentProcess()
if err != nil {
return -1, CPUQuotaUndefined, err
}
quota, defined, err := cgroups.CPUQuota()
if !defined || err != nil {
return -1, CPUQuotaUndefined, err
}
maxProcs := int(math.Floor(quota))
if minValue > 0 && maxProcs < minValue {
return minValue, CPUQuotaMinUsed, nil
}
return maxProcs, CPUQuotaUsed, nil
}

30
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@ -0,0 +1,30 @@
// Copyright (c) 2017 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// +build !linux
package runtime
// CPUQuotaToGOMAXPROCS converts the CPU quota applied to the calling process
// to a valid GOMAXPROCS value. This is Linux-specific and not supported in the
// current OS.
func CPUQuotaToGOMAXPROCS(_ int) (int, CPUQuotaStatus, error) {
return -1, CPUQuotaUndefined, nil
}

33
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@ -0,0 +1,33 @@
// Copyright (c) 2017 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package runtime
// CPUQuotaStatus presents the status of how CPU quota is used
type CPUQuotaStatus int
const (
// CPUQuotaUndefined is returned when CPU quota is undefined
CPUQuotaUndefined CPUQuotaStatus = iota
// CPUQuotaUsed is returned when a valid CPU quota can be used
CPUQuotaUsed
// CPUQuotaMinUsed is return when CPU quota is smaller than the min value
CPUQuotaMinUsed
)

130
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// Copyright (c) 2017 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// Package maxprocs lets Go programs easily configure runtime.GOMAXPROCS to
// match the configured Linux CPU quota. Unlike the top-level automaxprocs
// package, it lets the caller configure logging and handle errors.
package maxprocs // import "go.uber.org/automaxprocs/maxprocs"
import (
"os"
"runtime"
iruntime "go.uber.org/automaxprocs/internal/runtime"
)
const _maxProcsKey = "GOMAXPROCS"
func currentMaxProcs() int {
return runtime.GOMAXPROCS(0)
}
type config struct {
printf func(string, ...interface{})
procs func(int) (int, iruntime.CPUQuotaStatus, error)
minGOMAXPROCS int
}
func (c *config) log(fmt string, args ...interface{}) {
if c.printf != nil {
c.printf(fmt, args...)
}
}
// An Option alters the behavior of Set.
type Option interface {
apply(*config)
}
// Logger uses the supplied printf implementation for log output. By default,
// Set doesn't log anything.
func Logger(printf func(string, ...interface{})) Option {
return optionFunc(func(cfg *config) {
cfg.printf = printf
})
}
// Min sets the minimum GOMAXPROCS value that will be used.
// Any value below 1 is ignored.
func Min(n int) Option {
return optionFunc(func(cfg *config) {
if n >= 1 {
cfg.minGOMAXPROCS = n
}
})
}
type optionFunc func(*config)
func (of optionFunc) apply(cfg *config) { of(cfg) }
// Set GOMAXPROCS to match the Linux container CPU quota (if any), returning
// any error encountered and an undo function.
//
// Set is a no-op on non-Linux systems and in Linux environments without a
// configured CPU quota.
func Set(opts ...Option) (func(), error) {
cfg := &config{
procs: iruntime.CPUQuotaToGOMAXPROCS,
minGOMAXPROCS: 1,
}
for _, o := range opts {
o.apply(cfg)
}
undoNoop := func() {
cfg.log("maxprocs: No GOMAXPROCS change to reset")
}
// Honor the GOMAXPROCS environment variable if present. Otherwise, amend
// `runtime.GOMAXPROCS()` with the current process' CPU quota if the OS is
// Linux, and guarantee a minimum value of 1. The minimum guaranteed value
// can be overriden using `maxprocs.Min()`.
if max, exists := os.LookupEnv(_maxProcsKey); exists {
cfg.log("maxprocs: Honoring GOMAXPROCS=%q as set in environment", max)
return undoNoop, nil
}
maxProcs, status, err := cfg.procs(cfg.minGOMAXPROCS)
if err != nil {
return undoNoop, err
}
if status == iruntime.CPUQuotaUndefined {
cfg.log("maxprocs: Leaving GOMAXPROCS=%v: CPU quota undefined", currentMaxProcs())
return undoNoop, nil
}
prev := currentMaxProcs()
undo := func() {
cfg.log("maxprocs: Resetting GOMAXPROCS to %v", prev)
runtime.GOMAXPROCS(prev)
}
switch status {
case iruntime.CPUQuotaMinUsed:
cfg.log("maxprocs: Updating GOMAXPROCS=%v: using minimum allowed GOMAXPROCS", maxProcs)
case iruntime.CPUQuotaUsed:
cfg.log("maxprocs: Updating GOMAXPROCS=%v: determined from CPU quota", maxProcs)
}
runtime.GOMAXPROCS(maxProcs)
return undo, nil
}

24
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// Copyright (c) 2017 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package maxprocs
// Version is the current package version.
const Version = "1.4.0"

6
vendor/modules.txt vendored
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@ -250,6 +250,12 @@ github.com/stretchr/testify/require
## explicit
github.com/urfave/cli/v2
github.com/urfave/cli/v2/altsrc
# go.uber.org/automaxprocs v1.4.0
## explicit
go.uber.org/automaxprocs
go.uber.org/automaxprocs/internal/cgroups
go.uber.org/automaxprocs/internal/runtime
go.uber.org/automaxprocs/maxprocs
# golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a
## explicit
golang.org/x/crypto/blake2b