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How to use checkLock method of main Package

Best Rod code snippet using main.checkLock

writer.go

Source:writer.go

...33	// typical user operation latency34	tick := time.Tick(150 * time.Millisecond)35	for range tick {36		const retries = 537		checkLock := func(err error) bool {38			if err == nil {39				return false40			}41			if isLocked(err) {42				log.Println(err, "retrying")43				return true44			}45			check(err)46			return false47		}48		for i := 0; i < retries; i++ {49			tx, err := db.BeginTx(context.Background(), &sql.TxOptions{50				Isolation: sql.LevelSerializable,51			})52			if checkLock(err) {53				continue54			}55			var i int56			row := tx.QueryRow("SELECT v FROM t1 WHERE id = 1")57			checkLock(row.Scan(&i))58			i++59			_, err = tx.Exec("UPDATE t1 SET v = $1 WHERE id = 1", i)60			if checkLock(err) {61				continue62			}63			// typical local file operation latency64			wait := 75 * time.Millisecond65			if *slow {66				// typical network latency67				wait = 250 * time.Millisecond68			}69			time.Sleep(wait)70			if checkLock(tx.Commit()) {71				tx.Rollback()72				continue73			}74			break75		}76		fmt.Print(".")77		if *interactive {78			var i string79			fmt.Scanln(&i)80		}81	}82}83func check(err error) {84	if err != nil {...

ruready.go

Source:ruready.go

...18    Port int `short:"p" long:"port" default:"8099" description:"Server port"`19    Version bool `short:"v" long:"version"  description:"Shows version information"`20}21var cmdArgs []string22var checkLock sync.Mutex23var lastCheck time.Time = time.Time{}24var isReady bool = false25var meta_version string = "N/A"26func checkIsReady() bool {27    checkLock.Lock()28    defer checkLock.Unlock()29    if !isReady {30        now := time.Now()31        secondsSinceLastCheck := int(now.Sub(lastCheck).Seconds())32        if secondsSinceLastCheck > opts.CacheTime {33            lastCheck = now;34            err := exec.Command(opts.Command, cmdArgs...).Run()35            isReady = err == nil36        }37    }38    return isReady39}40func readyHandler(w http.ResponseWriter, r *http.Request) {41    if !checkIsReady() {42        w.WriteHeader(http.StatusServiceUnavailable)...

main.go

Source:main.go

...7)8// This example shows how to detect the hanging points of golang code.9// It's actually a general way to debug any golang project.10func main() {11	defer checkLock()()12	go yourCodeHere()13}14// Put your code here, press Ctrl+C when you feel the program is hanging.15// Read each goroutine's stack that is related to your own code logic.16func yourCodeHere() {17	page := rod.New().MustConnect().MustPage("http://mdn.dev")18	go page.MustElement("not-exists")19}20// For this example you will find something like this below:21/*22goroutine 7 [select]:23github.com/moredure/xrod.(*Page).MustElement(0xc00037e000, 0xc00063a0f0, 0x1, 0x1, 0x0)24	rod/must.go:425 +0x4d25created by main.yourCodeHere26	rod/lib/examples/debug-deadlock/main.go:22 +0xb827*/28// From it we know the line 22 is blocking the code.29func checkLock() func() {30	ctx := gotrace.Signal()31	ignored := gotrace.IgnoreCurrent()32	return func() {33		fmt.Println(gotrace.Wait(ctx, ignored))34	}35}...

checkLock

Using AI Code Generation

1import (2func main() {3	wg.Add(2)4	go func() {5		checkLock()6		wg.Done()7	}()8	go func() {9		checkLock()10		wg.Done()11	}()12	wg.Wait()13}14func checkLock() {15	m.Lock()16	fmt.Println("Locked:", m)17	m.Unlock()18	fmt.Println("Unlocked:", m)19}20Locked: {state:1 sema:0}21Unlocked: {state:0 sema:0}22Locked: {state:1 sema:0}23Unlocked: {state:0 sema:0}24import (25func main() {26	wg.Add(2)27	go func() {28		checkLock()29		wg.Done()30	}()31	go func() {32		checkLock()33		wg.Done()34	}()35	wg.Wait()36}37func checkLock() {38	m.Lock()39	fmt.Println("Locked:", m)40}41Locked: {state:1 sema:0}42import (

checkLock

Using AI Code Generation

1import (2func main() {3    wg.Add(1)4    go func() {5        defer wg.Done()6        main.checkLock()7    }()8    wg.Wait()9}10import (11func main() {12    wg.Add(1)13    go func() {14        defer wg.Done()15        main.checkLock()16    }()17    wg.Wait()18}19import (20func main() {21    wg.Add(1)22    go func() {23        defer wg.Done()24        main.checkLock()25    }()26    wg.Wait()27}28import (29func main() {30    wg.Add(1)31    go func() {32        defer wg.Done()33        main.checkLock()34    }()35    wg.Wait()36}37import (38func main() {39    wg.Add(1)40    go func() {41        defer wg.Done()42        main.checkLock()43    }()44    wg.Wait()45}46import (47func main() {48    wg.Add(1)49    go func() {50        defer wg.Done()51        main.checkLock()52    }()53    wg.Wait()54}55import (56func main() {57    wg.Add(1)58    go func() {59        defer wg.Done()60        main.checkLock()61    }()62    wg.Wait()63}

checkLock

Using AI Code Generation

1checkLock()2checkLock()3checkLock()4import (5func main() {6	fmt.Println("Hello, World!")7	go func() {8		time.Sleep(1 * time.Second)9	}()10	checkLock(&lock)11	fmt.Println("Hello, World!")12	checkLock(&lock)13	fmt.Println("Hello, World!")14	checkLock(&lock)15	fmt.Println("Hello, World!")16	checkLock(&lock)17}18func checkLock(lock *int) {19	for *lock == 0 {20	}21}

checkLock

Using AI Code Generation

1import (2func main() {3	wg.Add(1)4	go func() {5		defer wg.Done()6		main.checkLock()7	}()8	wg.Wait()9}10import (11func main() {12	wg.Add(1)13	go func() {14		defer wg.Done()15		main.checkLock()16	}()17	wg.Wait()18}19./1.go:10: main.checkLock undefined (type func() has no field or method checkLock)20./2.go:10: main.checkLock undefined (type func() has no field or method checkLock)21./3.go:10: main.checkLock undefined (type func() has no field or method checkLock)22How can I access main.checkLock() method from other go files?23import (

checkLock

Using AI Code Generation

1import (2func main() {3	fmt.Println("CPU's ", runtime.NumCPU())4	fmt.Println("GoRoutines ", runtime.NumGoroutine())5	wg.Add(2)6	go func() {7		checkLock(&mu)8		wg.Done()9	}()10	go func() {11		checkLock(&mu)12		wg.Done()13	}()14	fmt.Println("CPU's ", runtime.NumCPU())15	fmt.Println("GoRoutines ", runtime.NumGoroutine())16	wg.Wait()17}18func checkLock(mu *sync.Mutex) {19	mu.Lock()20	fmt.Println("Locked")21	time.Sleep(time.Second)22	mu.Unlock()23	fmt.Println("Unlocked")24}25import (26func main() {27	fmt.Println("CPU's ", runtime.NumCPU())28	fmt.Println("GoRoutines ", runtime.NumGoroutine())29	wg.Add(2)30	go func() {31		checkLock(&mu)32		wg.Done()33	}()34	go func() {35		checkLock(&mu)36		wg.Done()37	}()38	fmt.Println("CPU's ", runtime.NumCPU())39	fmt.Println("GoRoutines ", runtime.NumGoroutine())40	wg.Wait()41}42func checkLock(mu *sync.Mutex) {43	mu.Lock()44	fmt.Println("Locked")45	time.Sleep(time.Second)46	mu.Unlock()47	fmt.Println("Unlocked")48}

checkLock

Using AI Code Generation

1import "fmt"2func main() {3  fmt.Println("Hello World")4  main.checkLock()5}6import "fmt"7func main() {8  fmt.Println("Hello World")9}10func checkLock() {11  fmt.Println("Hello World")12}

checkLock

Using AI Code Generation

1import "fmt"2func main() {3    var s = new(Struct)4    s.checkLock()5    fmt.Println("Hello, playground")6}7import "fmt"8type Struct struct {9}10func (s *Struct) checkLock() {11    fmt.Println("Hello, playground")12}13./2.go:6: s.checkLock undefined (type *Struct has no field or method checkLock)14import "fmt"15type Struct struct{}16func (s *Struct) checkLock() {17    fmt.Println("Hello, playground")18}19func main() {20    var s = new(Struct)21    s.checkLock()22    fmt.Println("Hello, playground")23}

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