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authorLibravatar Rutger Broekhoff2023-12-29 21:31:53 +0100
committerLibravatar Rutger Broekhoff2023-12-29 21:31:53 +0100
commit404aeae4545d2426c089a5f8d5e82dae56f5212b (patch)
tree2d84e00af272b39fc04f3795ae06bc48970e57b5 /vendor/github.com/modern-go/concurrent
parent209d8b0187ed025dec9ac149ebcced3462877bff (diff)
downloadgitolfs3-404aeae4545d2426c089a5f8d5e82dae56f5212b.tar.gz
gitolfs3-404aeae4545d2426c089a5f8d5e82dae56f5212b.zip
Make Nix builds work
Diffstat (limited to 'vendor/github.com/modern-go/concurrent')
-rw-r--r--vendor/github.com/modern-go/concurrent/.gitignore1
-rw-r--r--vendor/github.com/modern-go/concurrent/.travis.yml14
-rw-r--r--vendor/github.com/modern-go/concurrent/LICENSE201
-rw-r--r--vendor/github.com/modern-go/concurrent/README.md49
-rw-r--r--vendor/github.com/modern-go/concurrent/executor.go14
-rw-r--r--vendor/github.com/modern-go/concurrent/go_above_19.go15
-rw-r--r--vendor/github.com/modern-go/concurrent/go_below_19.go33
-rw-r--r--vendor/github.com/modern-go/concurrent/log.go13
-rw-r--r--vendor/github.com/modern-go/concurrent/test.sh12
-rw-r--r--vendor/github.com/modern-go/concurrent/unbounded_executor.go119
10 files changed, 471 insertions, 0 deletions
diff --git a/vendor/github.com/modern-go/concurrent/.gitignore b/vendor/github.com/modern-go/concurrent/.gitignore
new file mode 100644
index 0000000..3f2bc47
--- /dev/null
+++ b/vendor/github.com/modern-go/concurrent/.gitignore
@@ -0,0 +1 @@
/coverage.txt
diff --git a/vendor/github.com/modern-go/concurrent/.travis.yml b/vendor/github.com/modern-go/concurrent/.travis.yml
new file mode 100644
index 0000000..449e67c
--- /dev/null
+++ b/vendor/github.com/modern-go/concurrent/.travis.yml
@@ -0,0 +1,14 @@
1language: go
2
3go:
4 - 1.8.x
5 - 1.x
6
7before_install:
8 - go get -t -v ./...
9
10script:
11 - ./test.sh
12
13after_success:
14 - bash <(curl -s https://codecov.io/bash)
diff --git a/vendor/github.com/modern-go/concurrent/LICENSE b/vendor/github.com/modern-go/concurrent/LICENSE
new file mode 100644
index 0000000..261eeb9
--- /dev/null
+++ b/vendor/github.com/modern-go/concurrent/LICENSE
@@ -0,0 +1,201 @@
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diff --git a/vendor/github.com/modern-go/concurrent/README.md b/vendor/github.com/modern-go/concurrent/README.md
new file mode 100644
index 0000000..acab320
--- /dev/null
+++ b/vendor/github.com/modern-go/concurrent/README.md
@@ -0,0 +1,49 @@
1# concurrent
2
3[![Sourcegraph](https://sourcegraph.com/github.com/modern-go/concurrent/-/badge.svg)](https://sourcegraph.com/github.com/modern-go/concurrent?badge)
4[![GoDoc](http://img.shields.io/badge/go-documentation-blue.svg?style=flat-square)](http://godoc.org/github.com/modern-go/concurrent)
5[![Build Status](https://travis-ci.org/modern-go/concurrent.svg?branch=master)](https://travis-ci.org/modern-go/concurrent)
6[![codecov](https://codecov.io/gh/modern-go/concurrent/branch/master/graph/badge.svg)](https://codecov.io/gh/modern-go/concurrent)
7[![rcard](https://goreportcard.com/badge/github.com/modern-go/concurrent)](https://goreportcard.com/report/github.com/modern-go/concurrent)
8[![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://raw.githubusercontent.com/modern-go/concurrent/master/LICENSE)
9
10* concurrent.Map: backport sync.Map for go below 1.9
11* concurrent.Executor: goroutine with explicit ownership and cancellable
12
13# concurrent.Map
14
15because sync.Map is only available in go 1.9, we can use concurrent.Map to make code portable
16
17```go
18m := concurrent.NewMap()
19m.Store("hello", "world")
20elem, found := m.Load("hello")
21// elem will be "world"
22// found will be true
23```
24
25# concurrent.Executor
26
27```go
28executor := concurrent.NewUnboundedExecutor()
29executor.Go(func(ctx context.Context) {
30 everyMillisecond := time.NewTicker(time.Millisecond)
31 for {
32 select {
33 case <-ctx.Done():
34 fmt.Println("goroutine exited")
35 return
36 case <-everyMillisecond.C:
37 // do something
38 }
39 }
40})
41time.Sleep(time.Second)
42executor.StopAndWaitForever()
43fmt.Println("executor stopped")
44```
45
46attach goroutine to executor instance, so that we can
47
48* cancel it by stop the executor with Stop/StopAndWait/StopAndWaitForever
49* handle panic by callback: the default behavior will no longer crash your application \ No newline at end of file
diff --git a/vendor/github.com/modern-go/concurrent/executor.go b/vendor/github.com/modern-go/concurrent/executor.go
new file mode 100644
index 0000000..623dba1
--- /dev/null
+++ b/vendor/github.com/modern-go/concurrent/executor.go
@@ -0,0 +1,14 @@
1package concurrent
2
3import "context"
4
5// Executor replace go keyword to start a new goroutine
6// the goroutine should cancel itself if the context passed in has been cancelled
7// the goroutine started by the executor, is owned by the executor
8// we can cancel all executors owned by the executor just by stop the executor itself
9// however Executor interface does not Stop method, the one starting and owning executor
10// should use the concrete type of executor, instead of this interface.
11type Executor interface {
12 // Go starts a new goroutine controlled by the context
13 Go(handler func(ctx context.Context))
14}
diff --git a/vendor/github.com/modern-go/concurrent/go_above_19.go b/vendor/github.com/modern-go/concurrent/go_above_19.go
new file mode 100644
index 0000000..aeabf8c
--- /dev/null
+++ b/vendor/github.com/modern-go/concurrent/go_above_19.go
@@ -0,0 +1,15 @@
1//+build go1.9
2
3package concurrent
4
5import "sync"
6
7// Map is a wrapper for sync.Map introduced in go1.9
8type Map struct {
9 sync.Map
10}
11
12// NewMap creates a thread safe Map
13func NewMap() *Map {
14 return &Map{}
15}
diff --git a/vendor/github.com/modern-go/concurrent/go_below_19.go b/vendor/github.com/modern-go/concurrent/go_below_19.go
new file mode 100644
index 0000000..b9c8df7
--- /dev/null
+++ b/vendor/github.com/modern-go/concurrent/go_below_19.go
@@ -0,0 +1,33 @@
1//+build !go1.9
2
3package concurrent
4
5import "sync"
6
7// Map implements a thread safe map for go version below 1.9 using mutex
8type Map struct {
9 lock sync.RWMutex
10 data map[interface{}]interface{}
11}
12
13// NewMap creates a thread safe map
14func NewMap() *Map {
15 return &Map{
16 data: make(map[interface{}]interface{}, 32),
17 }
18}
19
20// Load is same as sync.Map Load
21func (m *Map) Load(key interface{}) (elem interface{}, found bool) {
22 m.lock.RLock()
23 elem, found = m.data[key]
24 m.lock.RUnlock()
25 return
26}
27
28// Load is same as sync.Map Store
29func (m *Map) Store(key interface{}, elem interface{}) {
30 m.lock.Lock()
31 m.data[key] = elem
32 m.lock.Unlock()
33}
diff --git a/vendor/github.com/modern-go/concurrent/log.go b/vendor/github.com/modern-go/concurrent/log.go
new file mode 100644
index 0000000..9756fcc
--- /dev/null
+++ b/vendor/github.com/modern-go/concurrent/log.go
@@ -0,0 +1,13 @@
1package concurrent
2
3import (
4 "os"
5 "log"
6 "io/ioutil"
7)
8
9// ErrorLogger is used to print out error, can be set to writer other than stderr
10var ErrorLogger = log.New(os.Stderr, "", 0)
11
12// InfoLogger is used to print informational message, default to off
13var InfoLogger = log.New(ioutil.Discard, "", 0) \ No newline at end of file
diff --git a/vendor/github.com/modern-go/concurrent/test.sh b/vendor/github.com/modern-go/concurrent/test.sh
new file mode 100644
index 0000000..d1e6b2e
--- /dev/null
+++ b/vendor/github.com/modern-go/concurrent/test.sh
@@ -0,0 +1,12 @@
1#!/usr/bin/env bash
2
3set -e
4echo "" > coverage.txt
5
6for d in $(go list ./... | grep -v vendor); do
7 go test -coverprofile=profile.out -coverpkg=github.com/modern-go/concurrent $d
8 if [ -f profile.out ]; then
9 cat profile.out >> coverage.txt
10 rm profile.out
11 fi
12done
diff --git a/vendor/github.com/modern-go/concurrent/unbounded_executor.go b/vendor/github.com/modern-go/concurrent/unbounded_executor.go
new file mode 100644
index 0000000..05a77dc
--- /dev/null
+++ b/vendor/github.com/modern-go/concurrent/unbounded_executor.go
@@ -0,0 +1,119 @@
1package concurrent
2
3import (
4 "context"
5 "fmt"
6 "runtime"
7 "runtime/debug"
8 "sync"
9 "time"
10 "reflect"
11)
12
13// HandlePanic logs goroutine panic by default
14var HandlePanic = func(recovered interface{}, funcName string) {
15 ErrorLogger.Println(fmt.Sprintf("%s panic: %v", funcName, recovered))
16 ErrorLogger.Println(string(debug.Stack()))
17}
18
19// UnboundedExecutor is a executor without limits on counts of alive goroutines
20// it tracks the goroutine started by it, and can cancel them when shutdown
21type UnboundedExecutor struct {
22 ctx context.Context
23 cancel context.CancelFunc
24 activeGoroutinesMutex *sync.Mutex
25 activeGoroutines map[string]int
26 HandlePanic func(recovered interface{}, funcName string)
27}
28
29// GlobalUnboundedExecutor has the life cycle of the program itself
30// any goroutine want to be shutdown before main exit can be started from this executor
31// GlobalUnboundedExecutor expects the main function to call stop
32// it does not magically knows the main function exits
33var GlobalUnboundedExecutor = NewUnboundedExecutor()
34
35// NewUnboundedExecutor creates a new UnboundedExecutor,
36// UnboundedExecutor can not be created by &UnboundedExecutor{}
37// HandlePanic can be set with a callback to override global HandlePanic
38func NewUnboundedExecutor() *UnboundedExecutor {
39 ctx, cancel := context.WithCancel(context.TODO())
40 return &UnboundedExecutor{
41 ctx: ctx,
42 cancel: cancel,
43 activeGoroutinesMutex: &sync.Mutex{},
44 activeGoroutines: map[string]int{},
45 }
46}
47
48// Go starts a new goroutine and tracks its lifecycle.
49// Panic will be recovered and logged automatically, except for StopSignal
50func (executor *UnboundedExecutor) Go(handler func(ctx context.Context)) {
51 pc := reflect.ValueOf(handler).Pointer()
52 f := runtime.FuncForPC(pc)
53 funcName := f.Name()
54 file, line := f.FileLine(pc)
55 executor.activeGoroutinesMutex.Lock()
56 defer executor.activeGoroutinesMutex.Unlock()
57 startFrom := fmt.Sprintf("%s:%d", file, line)
58 executor.activeGoroutines[startFrom] += 1
59 go func() {
60 defer func() {
61 recovered := recover()
62 // if you want to quit a goroutine without trigger HandlePanic
63 // use runtime.Goexit() to quit
64 if recovered != nil {
65 if executor.HandlePanic == nil {
66 HandlePanic(recovered, funcName)
67 } else {
68 executor.HandlePanic(recovered, funcName)
69 }
70 }
71 executor.activeGoroutinesMutex.Lock()
72 executor.activeGoroutines[startFrom] -= 1
73 executor.activeGoroutinesMutex.Unlock()
74 }()
75 handler(executor.ctx)
76 }()
77}
78
79// Stop cancel all goroutines started by this executor without wait
80func (executor *UnboundedExecutor) Stop() {
81 executor.cancel()
82}
83
84// StopAndWaitForever cancel all goroutines started by this executor and
85// wait until all goroutines exited
86func (executor *UnboundedExecutor) StopAndWaitForever() {
87 executor.StopAndWait(context.Background())
88}
89
90// StopAndWait cancel all goroutines started by this executor and wait.
91// Wait can be cancelled by the context passed in.
92func (executor *UnboundedExecutor) StopAndWait(ctx context.Context) {
93 executor.cancel()
94 for {
95 oneHundredMilliseconds := time.NewTimer(time.Millisecond * 100)
96 select {
97 case <-oneHundredMilliseconds.C:
98 if executor.checkNoActiveGoroutines() {
99 return
100 }
101 case <-ctx.Done():
102 return
103 }
104 }
105}
106
107func (executor *UnboundedExecutor) checkNoActiveGoroutines() bool {
108 executor.activeGoroutinesMutex.Lock()
109 defer executor.activeGoroutinesMutex.Unlock()
110 for startFrom, count := range executor.activeGoroutines {
111 if count > 0 {
112 InfoLogger.Println("UnboundedExecutor is still waiting goroutines to quit",
113 "startFrom", startFrom,
114 "count", count)
115 return false
116 }
117 }
118 return true
119}