How to use Inc method of main Package

Best Syzkaller code snippet using main.Inc

pg.go

Source:pg.go Github

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1// Copyright 2016 Platina Systems, Inc. All rights reserved.2// Use of this source code is governed by a BSD-style3// license that can be found in the LICENSE file.4package ip45import (6 "github.com/platinasystems/go/elib/parse"7 "github.com/platinasystems/go/vnet"8 "github.com/platinasystems/go/vnet/icmp4"9 "github.com/platinasystems/go/vnet/ip"10 "github.com/platinasystems/go/vnet/pg"11 "fmt"12 "math/rand"13)14type pgStream struct {15 pg.Stream16 ai_src, ai_dst addressIncrement17}18type pgMain struct {19 v *vnet.Vnet20 protocolMap map[ip.Protocol]pg.StreamType21 icmpMain22}23func (m *pgMain) initProtocolMap() {24 if m.protocolMap != nil {25 return26 }27 m.protocolMap = make(map[ip.Protocol]pg.StreamType)28 m.protocolMap[ip.ICMP] = pg.GetStreamType(m.v, "icmp4")29}30func (m *pgMain) Name() string { return "ip4" }31var defaultHeader = Header{32 Protocol: ip.UDP,33 Src: Address{0x1, 0x2, 0x3, 0x4},34 Dst: Address{0x5, 0x6, 0x7, 0x8},35 Tos: 0,36 Ttl: 255,37 Ip_version_and_header_length: 0x45,38 Fragment_id: vnet.Uint16(0x1234).FromHost(),39 Flags_and_fragment_offset: DontFragment.FromHost(),40}41func (m *pgMain) ParseStream(in *parse.Input) (r pg.Streamer, err error) {42 m.initProtocolMap()43 var s pgStream44 h := defaultHeader45 for !in.End() {46 var min, max uint6447 switch {48 case in.Parse("%v", &h):49 incLoop:50 for {51 switch {52 case in.Parse("src %v-%v", &min, &max):53 s.addInc(true, false, &h, min, max)54 case in.Parse("src %v", &max):55 s.addInc(true, false, &h, 0, max-1)56 case in.Parse("dst %v-%v", &min, &max):57 s.addInc(false, false, &h, min, max)58 case in.Parse("dst %v", &max):59 s.addInc(false, false, &h, 0, max-1)60 case in.Parse("rand%*om src %v-%v", &min, &max):61 s.addInc(true, true, &h, min, max)62 case in.Parse("rand%*om dst %v-%v", &min, &max):63 s.addInc(false, true, &h, min, max)64 default:65 break incLoop66 }67 }68 s.AddHeader(&h)69 if t, ok := m.protocolMap[h.Protocol]; ok {70 var sub_r pg.Streamer71 sub_r, err = t.ParseStream(in)72 if err != nil {73 err = fmt.Errorf("ip4 %s: %s `%s'", t.Name(), err, in)74 return75 }76 s.AddStreamer(sub_r)77 }78 default:79 in.ParseError()80 }81 }82 if err == nil {83 r = &s84 }85 return86}87func (s *pgStream) addInc(isSrc, isRandom bool, h *Header, min, max uint64) {88 if max < min {89 max = min90 }91 ai := addressIncrement{92 min: min,93 max: max,94 cur: min,95 isRandom: isRandom,96 }97 if isSrc {98 ai.base = h.Src99 s.ai_src = ai100 } else {101 ai.base = h.Dst102 s.ai_dst = ai103 }104}105type addressIncrement struct {106 base Address107 cur uint64108 min uint64109 max uint64110 isRandom bool111}112func (ai *addressIncrement) valid() bool { return ai.max != ai.min }113func (ai *addressIncrement) do(dst []vnet.Ref, dataOffset uint, isSrc bool) {114 for i := range dst {115 h := (*Header)(dst[i].DataOffset(dataOffset))116 v := ai.cur117 if ai.isRandom {118 v = uint64(rand.Intn(int(1 + ai.max - ai.min)))119 }120 a := &h.Dst121 if isSrc {122 a = &h.Src123 }124 *a = ai.base125 a.Add(v)126 h.Checksum = h.ComputeChecksum()127 ai.cur++...

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competition.go

Source:competition.go Github

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1package main2import (3 "fmt"4 "runtime"5 "sync"6 "sync/atomic"7)8//如果两个或者多个 goroutine 在没有互相同步的情况下，访问某个共享的资源，并试图同时9//读和写这个资源，就处于相互竞争的状态，这种情况被称作竞争状态（race candition）。竞争状态10//的存在是让并发程序变得复杂的地方，十分容易引起潜在问题。对一个共享资源的读和写操作必11//须是原子化的，换句话说，同一时刻只能有一个 goroutine 对共享资源进行读和写操作。12var (13 // counter 是所有 goroutine 都要增加其值的变量14 num int6415 // wg 用来等待程序结束16 wg sync.WaitGroup17)18// main 是所有 Go 程序的入口19func main() {20 // 计数加 2，表示要等待两个 goroutine21 wg.Add(2)22 // 创建两个 goroutine23 //go incCounter(1)24 //go incCounter(2)25 go incNum(1)26 go incNum(2)27 // 等待 goroutine 结束28 wg.Wait()29 fmt.Println("Final Num:", num)30}31// incCounter 增加包里 num 变量的值32func incCounter(id int) {33 // 在函数退出时调用 Done 来通知 main 函数工作已经完成34 defer wg.Done()35 for count := 0; count < 2; count++ {36 // 捕获 num 的值37 value := num38 // 当前 goroutine 从线程退出，并放回到队列39 // 用于将 goroutine 从当前线程退出，40 //给其他 goroutine 运行的机会。在两次操作中间这样做的目的是强制调度器切换两个 goroutine，41 //以便让竞争状态的效果变得更明显。42 runtime.Gosched()43 // 增加本地 value 变量的值44 value++45 // 将该值保存回 counter46 num = value47 }48}49//每个 goroutine 都会覆盖另一个 goroutine 的工作。这种覆盖发生在 goroutine 切换的时候。每50//个 goroutine 创造了一个 num 变量的副本，之后就切换到另一个 goroutine。当这个 goroutine51//再次运行的时候， num 变量的值已经改变了，但是 goroutine 并没有更新自己的那个副本的52//值，而是继续使用这个副本的值，用这个值递增，并存回 num 变量，结果覆盖了另一个53//goroutine 完成的工作。54// 用原子函数锁住共享资源55// 原子函数能够以很底层的加锁机制来同步访问整型变量和指针。56func incNum(id int) {57 defer wg.Done()58 for count := 0; count < 2; count++ {59 // 安全地对num 加 160 atomic.AddInt64(&num, 1)61 runtime.Gosched()62 }63}...

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example1.go

Source:example1.go Github

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...32 value := counter33 // Yield the thread and be placed back in queue.34 // DO NOT USE IN PRODUCTION CODE!35 runtime.Gosched()36 // Increment our local value of Counter.37 value++38 // Store the value back into Counter.39 counter = value40 }41 // Tell main we are done.42 wg.Done()43}44/*45==================46WARNING: DATA RACE47Write by goroutine 5:48 main.incCounter()49 /Users/bill/Spaces/Go/Projects/src/github.com/gobridge/gotraining/06-concurrency_channels/02-race_conditions/example1/example1.go:54 +0x7650Previous read by goroutine 6:...

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Inc

Using AI Code Generation

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1import "fmt"2func main() {3 fmt.Println(Inc())4}5import "fmt"6func main() {7 fmt.Println(Inc())8}9import "fmt"10func main() {11 fmt.Println(Inc())12}13import "fmt"14func main() {15 fmt.Println(Inc())16}17import "fmt"18func main() {19 fmt.Println(Inc())20}21import "fmt"22func main() {23 fmt.Println(Inc())24}25import "fmt"26func main() {27 fmt.Println(Inc())28}29import "fmt"30func main() {31 fmt.Println(Inc())32}33import "fmt"34func main() {35 fmt.Println(Inc())36}37import "fmt"38func main() {39 fmt.Println(Inc())40}41import "fmt"42func main() {43 fmt.Println(Inc())44}45import "fmt"46func main() {47 fmt.Println(Inc())48}49import "fmt"50func main() {51 fmt.Println(Inc())52}53import "fmt"54func main() {55 fmt.Println(Inc())56}57import "fmt"

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Inc

Using AI Code Generation

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1import (2func main() {3 fmt.Println("main")4 main.Inc()5}6import (7func main() {8 fmt.Println("main")9 main.Inc()10}11import (12func main() {13 fmt.Println("main")14 main.Inc()15}16import (17func main() {18 fmt.Println("main")19 main.Inc()20}21import (22func main() {23 fmt.Println("main")24 main.Inc()25}26import (27func main() {28 fmt.Println("main")29 main.Inc()30}31import (32func main() {33 fmt.Println("main")34 main.Inc()35}36import (37func main() {38 fmt.Println("main")39 main.Inc()40}41import (42func main() {43 fmt.Println("main")44 main.Inc()45}46import (47func main() {48 fmt.Println("main")49 main.Inc()50}51import (52func main() {53 fmt.Println("main")

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Inc

Using AI Code Generation

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1import "fmt"2func main() {3 fmt.Println(Inc())4}5func Inc() int {6}7import "fmt"8func main() {9 fmt.Println(main.Inc())10}11import "fmt"12func main() {13 fmt.Println(Inc())14}15import "fmt"16func main() {17 fmt.Println(Inc())18}19import "fmt"20func main() {21 fmt.Println(m.Inc())22}23In the above example, we have imported the main package without specifying the path of the main

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Inc

Using AI Code Generation

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1import (2func main() {3 counter := main.Counter{0}4 counter.Inc()5 counter.Inc()6 counter.Inc()7 println(counter.Value())8}9import (10func TestCounter(t *testing.T) {11 counter := Counter{0}12 counter.Inc()13 counter.Inc()14 counter.Inc()15 if counter.Value() != 3 {16 t.Errorf("Expected 3, got %d", counter.Value())17 }18}19import (20func BenchmarkCounter(b *testing.B) {21 counter := Counter{0}22 for i := 0; i < b.N; i++ {23 counter.Inc()24 }25}

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Inc

Using AI Code Generation

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1import "fmt"2func main() {3 fmt.Println(Inc())4}5func Inc() int {6}7import "fmt"8func main() {9 fmt.Println(main.Inc())10}11import "fmt"12func main() {13 fmt.Println(Inc())14}15import "fmt"16func main() {17 fmt.Println(Inc())18}19import "fmt"20func main() {21 fmt.Println(m.Inc())22}23In the above example, we have imported the main package without specifying the path of the main

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Inc

Using AI Code Generation

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1import (2func main() {3 fmt.Println(main.Inc(2))4}5func Inc(i int) int {6}7import (

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Inc

Using AI Code Generation

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1import "fmt"2import "main"3func main() {4 fmt.Println(main.Inc(7))5}6func main() {7 fmt.Println(2.Inc(2))8}9func Inc(i int) int {10}11import (12func main() {13 fmt.Println(2.Inc(2))14}

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