How to use State method of wait Package
Best Testcontainers-go code snippet using wait.State
miner_test.go
Source:miner_test.go 
...46func (m *mockBackend) TxPool() *core.TxPool {47 return m.txPool48}49type testBlockChain struct {50 statedb *state.StateDB51 gasLimit uint6452 chainHeadFeed *event.Feed53}54func (bc *testBlockChain) CurrentBlock() *types.Block {55 return types.NewBlock(&types.Header{56 GasLimit: bc.gasLimit,57 }, nil, nil, nil, trie.NewStackTrie(nil))58}59func (bc *testBlockChain) GetBlock(hash common.Hash, number uint64) *types.Block {60 return bc.CurrentBlock()61}62func (bc *testBlockChain) StateAt(common.Hash) (*state.StateDB, error) {63 return bc.statedb, nil64}65func (bc *testBlockChain) SubscribeChainHeadEvent(ch chan<- core.ChainHeadEvent) event.Subscription {66 return bc.chainHeadFeed.Subscribe(ch)67}68func TestMiner(t *testing.T) {69 miner, mux := createMiner(t)70 miner.Start(common.HexToAddress("0x12345"))71 waitForMiningState(t, miner, true)72 // Start the downloader73 mux.Post(downloader.StartEvent{})74 waitForMiningState(t, miner, false)75 // Stop the downloader and wait for the update loop to run76 mux.Post(downloader.DoneEvent{})77 waitForMiningState(t, miner, true)78 // Subsequent downloader events after a successful DoneEvent should not cause the79 // miner to start or stop. This prevents a security vulnerability80 // that would allow entities to present fake high blocks that would81 // stop mining operations by causing a downloader sync82 // until it was discovered they were invalid, whereon mining would resume.83 mux.Post(downloader.StartEvent{})84 waitForMiningState(t, miner, true)85 mux.Post(downloader.FailedEvent{})86 waitForMiningState(t, miner, true)87}88// TestMinerDownloaderFirstFails tests that mining is only89// permitted to run indefinitely once the downloader sees a DoneEvent (success).90// An initial FailedEvent should allow mining to stop on a subsequent91// downloader StartEvent.92func TestMinerDownloaderFirstFails(t *testing.T) {93 miner, mux := createMiner(t)94 miner.Start(common.HexToAddress("0x12345"))95 waitForMiningState(t, miner, true)96 // Start the downloader97 mux.Post(downloader.StartEvent{})98 waitForMiningState(t, miner, false)99 // Stop the downloader and wait for the update loop to run100 mux.Post(downloader.FailedEvent{})101 waitForMiningState(t, miner, true)102 // Since the downloader hasn't yet emitted a successful DoneEvent,103 // we expect the miner to stop on next StartEvent.104 mux.Post(downloader.StartEvent{})105 waitForMiningState(t, miner, false)106 // Downloader finally succeeds.107 mux.Post(downloader.DoneEvent{})108 waitForMiningState(t, miner, true)109 // Downloader starts again.110 // Since it has achieved a DoneEvent once, we expect miner111 // state to be unchanged.112 mux.Post(downloader.StartEvent{})113 waitForMiningState(t, miner, true)114 mux.Post(downloader.FailedEvent{})115 waitForMiningState(t, miner, true)116}117func TestMinerStartStopAfterDownloaderEvents(t *testing.T) {118 miner, mux := createMiner(t)119 miner.Start(common.HexToAddress("0x12345"))120 waitForMiningState(t, miner, true)121 // Start the downloader122 mux.Post(downloader.StartEvent{})123 waitForMiningState(t, miner, false)124 // Downloader finally succeeds.125 mux.Post(downloader.DoneEvent{})126 waitForMiningState(t, miner, true)127 miner.Stop()128 waitForMiningState(t, miner, false)129 miner.Start(common.HexToAddress("0x678910"))130 waitForMiningState(t, miner, true)131 miner.Stop()132 waitForMiningState(t, miner, false)133}134func TestStartWhileDownload(t *testing.T) {135 miner, mux := createMiner(t)136 waitForMiningState(t, miner, false)137 miner.Start(common.HexToAddress("0x12345"))138 waitForMiningState(t, miner, true)139 // Stop the downloader and wait for the update loop to run140 mux.Post(downloader.StartEvent{})141 waitForMiningState(t, miner, false)142 // Starting the miner after the downloader should not work143 miner.Start(common.HexToAddress("0x12345"))144 waitForMiningState(t, miner, false)145}146func TestStartStopMiner(t *testing.T) {147 miner, _ := createMiner(t)148 waitForMiningState(t, miner, false)149 miner.Start(common.HexToAddress("0x12345"))150 waitForMiningState(t, miner, true)151 miner.Stop()152 waitForMiningState(t, miner, false)153}154func TestCloseMiner(t *testing.T) {155 miner, _ := createMiner(t)156 waitForMiningState(t, miner, false)157 miner.Start(common.HexToAddress("0x12345"))158 waitForMiningState(t, miner, true)159 // Terminate the miner and wait for the update loop to run160 miner.Close()161 waitForMiningState(t, miner, false)162}163// TestMinerSetEtherbase checks that etherbase becomes set even if mining isn't164// possible at the moment165func TestMinerSetEtherbase(t *testing.T) {166 miner, mux := createMiner(t)167 // Start with a 'bad' mining address168 miner.Start(common.HexToAddress("0xdead"))169 waitForMiningState(t, miner, true)170 // Start the downloader171 mux.Post(downloader.StartEvent{})172 waitForMiningState(t, miner, false)173 // Now user tries to configure proper mining address174 miner.Start(common.HexToAddress("0x1337"))175 // Stop the downloader and wait for the update loop to run176 mux.Post(downloader.DoneEvent{})177 waitForMiningState(t, miner, true)178 // The miner should now be using the good address179 if got, exp := miner.coinbase, common.HexToAddress("0x1337"); got != exp {180 t.Fatalf("Wrong coinbase, got %x expected %x", got, exp)181 }182}183// waitForMiningState waits until either184// * the desired mining state was reached185// * a timeout was reached which fails the test186func waitForMiningState(t *testing.T, m *Miner, mining bool) {187 t.Helper()188 var state bool189 for i := 0; i < 100; i++ {190 time.Sleep(10 * time.Millisecond)191 if state = m.Mining(); state == mining {192 return193 }194 }195 t.Fatalf("Mining() == %t, want %t", state, mining)196}197func createMiner(t *testing.T) (*Miner, *event.TypeMux) {198 // Create Ethash config199 config := Config{200 Etherbase: common.HexToAddress("123456789"),...
state.go
Source:state.go
...18)19// type _dtype int20//21// var _d _dtype22// State stores all the common state data used in pod23type State struct {24 sync.Mutex25 WaitGroup sync.WaitGroup26 KillAll qu.C27 // Config is the pod all-in-one server config28 Config *config.Config29 // ConfigMap30 ConfigMap map[string]opt.Option31 // StateCfg is a reference to the main node state configuration struct32 StateCfg *active.Config33 // ActiveNet is the active net parameters34 ActiveNet *chaincfg.Params35 // Language libraries36 Language *lang.Lexicon37 // Node is the run state of the node38 Node atomic.Bool39 // NodeReady is closed when it is ready then always returns40 NodeReady qu.C41 // NodeKill is the killswitch for the Node42 NodeKill qu.C43 // Wallet is the run state of the wallet44 Wallet atomic.Bool45 // WalletKill is the killswitch for the Wallet46 WalletKill qu.C47 // RPCServer is needed to directly query data48 RPCServer *chainrpc.Server49 // NodeChan relays the chain RPC server to the main50 NodeChan chan *chainrpc.Server51 // // WalletServer is needed to query the wallet52 // WalletServer *wallet.Wallet53 // ChainClientReady signals when the chain client is ready54 ChainClientReady qu.C55 // ChainClient is the wallet's chain RPC client56 ChainClient *chainclient.RPCClient57 // RealNode is the main node58 RealNode *chainrpc.Node59 // Hashrate is the current total hashrate from kopach workers taking work from this node60 Hashrate atomic.Uint6461 // Controller is the state of the controller62 Controller *ctrl.State63 // OtherNodesCounter is the count of nodes connected automatically on the LAN64 OtherNodesCounter atomic.Int3265 waitChangers []string66 waitCounter int67 Syncing *atomic.Bool68 IsGUI bool69}70func (cx *State) WaitAdd() {71 cx.WaitGroup.Add(1)72 _, file, line, _ := runtime.Caller(1)73 record := fmt.Sprintf("+ %s:%d", file, line)74 cx.waitChangers = append(cx.waitChangers, record)75 cx.waitCounter++76 D.Ln("added to waitgroup", record, cx.waitCounter)77 D.Ln(cx.PrintWaitChangers())78}79func (cx *State) WaitDone() {80 _, file, line, _ := runtime.Caller(1)81 record := fmt.Sprintf("- %s:%d", file, line)82 cx.waitChangers = append(cx.waitChangers, record)83 cx.waitCounter--84 D.Ln("removed from waitgroup", record, cx.waitCounter)85 D.Ln(cx.PrintWaitChangers())86 qu.PrintChanState()87 cx.WaitGroup.Done()88}89func (cx *State) WaitWait() {90 D.Ln(cx.PrintWaitChangers())91 cx.WaitGroup.Wait()92}93func (cx *State) PrintWaitChangers() string {94 o := "Calls that change context waitgroup values:\n"95 for i := range cx.waitChangers {96 o += strings.Repeat(" ", 48)97 o += cx.waitChangers[i] + "\n"98 }99 o += strings.Repeat(" ", 48)100 o += "current total:"101 o += fmt.Sprint(cx.waitCounter)102 return o103}104func GetContext(cx *State) *chainrpc.Context {105 return &chainrpc.Context{106 Config: cx.Config, StateCfg: cx.StateCfg, ActiveNet: cx.ActiveNet,107 Hashrate: cx.Hashrate,108 }109}110// func (cx *State) IsCurrent() (is bool) {111// rn := cx.RealNode112// cc := rn.ConnectedCount()113// othernodes := cx.OtherNodesCounter.Load()114// if !cx.Config.LAN.True() {115// cc -= othernodes116// }117// D.Ln(cc, "nodes connected")118// connected := cc > 0119// is = rn.Chain.IsCurrent() &&120// rn.SyncManager.IsCurrent() &&121// connected &&122// rn.Chain.BestChain.Height() >= rn.HighestKnown.Load() || cx.Config.Solo.True()123// D.Ln(124// "is current:", is, "-", rn.Chain.IsCurrent(), rn.SyncManager.IsCurrent(),...
main.go
Source:main.go
1package main2import (3 "fmt"4 "sync"5 "sync/atomic"6 "unsafe"7)8type noCopy struct{}9// Lock is a no-op used by -copylocks checker from `go vet`.10func (*noCopy) Lock() {}11func (*noCopy) Unlock() {}12type User struct {13 //noCopy noCopy14 Name string15 Info *Info16}17type Info struct {18 Age int19 Number int20}21func main() {22 wg := sync.WaitGroup{}23 wg.Add(100)24 for i := 0; i < 100; i++ {25 go func() {26 defer wg.Done()27 fmt.Println(i)28 }()29 }30 wg.Wait()31}32func f(i int, wg sync.WaitGroup) {33 fmt.Println(i)34 wg.Done()35}36//func main() {37// wg := sync.WaitGroup{}38// wg.Add(1)39// doDeadLock(wg)40// wg.Wait()41// //u := User{42// // Name: "asong",43// // Info: &Info{44// // Age: 10,45// // Number: 24,46// // },47// //}48// //u1 := u49// //u1.Name = "Golang梦工å"50// //u1.Info.Age = 3051// //fmt.Println(u.Info.Age,u.Name)52// //fmt.Println(u1.Info.Age,u1.Name)53//}54func exampleToNoCopy() {55}56type httpPkg struct{}57func (httpPkg) Get(url string) {}58var http httpPkg59func exampleDemo() {60 var wg sync.WaitGroup61 var urls = []string{62 "http://www.golang.org/",63 "http://www.google.com/",64 "http://www.somestupidname.com/",65 }66 for _, url := range urls {67 // Increment the WaitGroup counter.68 wg.Add(1)69 // Launch a goroutine to fetch the URL.70 go func(url string) {71 // Decrement the counter when the goroutine completes.72 defer wg.Done()73 // Fetch the URL.74 http.Get(url)75 }(url)76 }77 // Wait for all HTTP fetches to complete.78 wg.Wait()79}80func exampleImplWaitGroup() {81 done := make(chan struct{}) // æ¶10份ä¿æ¤è´¹82 count := 10 // 10个马ä»83 for i:=0;i < count;i++{84 go func(i int) {85 defer func() {86 done <- struct {}{}87 }()88 fmt.Printf("马ä»%då·æ¶ä¿æ¤è´¹\n",i)89 }(i)90 }91 for i:=0;i< count;i++{92 <- done93 fmt.Printf("马ä»%då·å·²ç»æ¶å®ä¿æ¤è´¹\n",i)94 }95 fmt.Println("ææ马ä»å·²ç»å¹²å®æ´»äºï¼å¼å§é
å§æ¶è´¹ï½")96}97func doDeadLock(wg sync.WaitGroup) {98 defer wg.Done()99 fmt.Println("do something")100}101type MyWaitGroup struct {102 state1 [3]uint32103}104// state returns pointers to the state and sema fields stored within wg.state1.105func (wg *MyWaitGroup) state() (statep *uint64, semap *uint32) {106 if uintptr(unsafe.Pointer(&wg.state1))%8 == 0 {107 return (*uint64)(unsafe.Pointer(&wg.state1)), &wg.state1[2]108 } else {109 return (*uint64)(unsafe.Pointer(&wg.state1[1])), &wg.state1[0]110 }111}112func (wg *MyWaitGroup) Add(delta int) {113 statep, _ := wg.state()114 state := atomic.AddUint64(statep, uint64(delta)<<32)115 v := int32(state >> 32)116 w := uint32(state)117 fmt.Println(v,w)118}119// Done decrements the WaitGroup counter by one.120func (wg *MyWaitGroup) Done() {121 wg.Add(-1)122}123// Wait blocks until the WaitGroup counter is zero.124func (wg *MyWaitGroup) Wait() {125 statep, _ := wg.state()126 for {127 state := atomic.LoadUint64(statep)128 v := int32(state >> 32)129 w := uint32(state)130 fmt.Println(v,w)131 if v == 0 {132 return133 }134 // Increment waiters count.135 if atomic.CompareAndSwapUint64(statep, state, state+1) {136 v = int32(state >> 32)137 w = uint32(state)138 fmt.Println(state,v,w)139 if *statep != 0 {140 panic("sync: WaitGroup is reused before previous Wait has returned")141 }142 return143 }144 }145}...
State
Using AI Code Generation
1import (2func main() {3 c1 := make(chan string, 1)4 go func() {5 time.Sleep(time.Second * 2)6 }()7 select {8 fmt.Println(res)9 case <-time.After(time.Second * 1):10 fmt.Println("timeout 1")11 }12 c2 := make(chan string, 1)13 go func() {14 time.Sleep(time.Second * 2)15 }()16 select {17 fmt.Println(res)18 case <-time.After(time.Second * 3):19 fmt.Println("timeout 2")20 }21}22import (23func main() {24 ticker := time.NewTicker(time.Millisecond * 500)25 go func() {26 for t := range ticker.C {27 fmt.Println("Tick at", t)28 }29 }()30 time.Sleep(time.Millisecond * 1600)31 ticker.Stop()32 fmt.Println("Ticker stopped")33}34import (35func main() {36 timer1 := time.NewTimer(time
State
Using AI Code Generation
1import (2func main() {3 wg.Add(1)4 go func() {5 count("sheep")6 wg.Done()7 }()8 wg.Wait()9}10func count(thing string) {11 for i := 1; i <= 5; i++ {12 fmt.Println(i, thing)13 time.Sleep(time.Millisecond * 500)14 }15}
State
Using AI Code Generation
1import (2func main() {3 wg.Add(1)4 go func() {5 defer wg.Done()6 fmt.Println("Hello")7 }()8 wg.Add(1)9 go func() {10 defer wg.Done()11 fmt.Println("World")12 }()13 time.Sleep(time.Second)14 state := wg.State()15 fmt.Printf("%+v16 wg.Wait()17}18{Count:2 Waiters:0 NoCopy:sync.noCopy{}}19import (20func main() {21 wg.Add(1)22 go func() {23 defer wg.Done()24 fmt.Println("Hello")25 }()26 wg.Add(1)27 go func() {28 defer wg.Done()29 fmt.Println("World")30 }()31 wg.Wait()32}33import (34func main() {35 wg.Add(1)36 go func() {37 defer wg.Done()38 fmt.Println("Hello")39 }()40 wg.Add(1)41 go func() {42 defer wg.Done()43 fmt.Println("World")44 }()45 done := make(chan bool)46 go func() {47 wg.Wait()48 }()49 select {50 fmt.Println("Waited for long time")51 case <-time.After(500 * time.Millisecond):52 fmt.Println("Waited for short time")53 }54}55import (56func main() {57 wg.Add(1)58 go func() {59 defer wg.Done()60 fmt.Println("Hello")61 }()62 wg.Add(1)63 go func() {64 defer wg.Done()65 fmt.Println("World")66 }()67 wg.Add(-1)68 wg.Wait()69}
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