10 examples of 'golang mutex' in Go

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36func main() {
37 var l = sync.Mutex{}
38 var c = sync.NewCond(&l)
39
40 for _, site := range sites {
41 println("starting scraper for " + site)
42 go scrapeSite(site, c)
43 }
44 for doneCount < len(sites) {
45 time.Sleep(1 * time.Second)
46 }
47 println("Done!")
48}
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235func (s *Server) getMutex() (cluster.Mutex, error) {
236 s.mutexMutex.Lock()
237 defer s.mutexMutex.Unlock()
238
239 if s.mutex != nil {
240 return s.mutex, nil
241 }
242
243 mutex, err := s.cluster.Mutex(lockKey)
244 if err != nil {
245 return nil, err
246 }
247
248 s.mutex = mutex
249
250 return s.mutex, nil
251}
18func main() {
19 runtime.LockOSThread()
20 pid := os.Getpid()
21 printPid(pid)
22 time.Sleep(10 * time.Second)
23
24 for {
25 printPid(pid)
26 sayhi()
27 }
28}
15func main() {
16 go foo()
17 go foo()
18
19 // go fooByAtomic()
20 // go fooByAtomic()
21
22 // go fooByMoreScope()
23 // go fooByMoreScope()
24
25 time.Sleep(time.Second)
26}
105func main() {
106 cpu, _ := strconv.Atoi(os.Args[1])
107 lib := os.Args[2]
108 method := os.Args[3]
109 fmt.Println("using CPUs:", cpu)
110 runtime.GOMAXPROCS(cpu)
111 num_routines := 6
112 num_renders := 20
113
114 if method == "chan" {
115 if lib == "rubex" {
116 render_pages2("rubex", re2, num_routines, num_renders)
117 } else {
118 render_pages2("regexp", re1, num_routines, num_renders)
119 }
120 } else {
121 if lib == "rubex" {
122 render_pages("rubex", re2, num_routines, num_renders)
123 } else {
124 render_pages("regexp", re1, num_routines, num_renders)
125 }
126
127 }
128 d, _ := time.ParseDuration("5s")
129 for i := 0; i < 100; i++ {
130 fmt.Println("goroutine:", runtime.NumGoroutine())
131 time.Sleep(d)
132
133 }
134 fmt.Println("Done")
135}
10func main() {
11 var mu sync.Mutex
12 if rand.Int() > 0 {
13 mu.Unlock()
14 } else {
15 mu.Lock()
16 }
17 a = 5
18 _ = a
19}
2148func OpenMutex(desiredAccess uint32, inheritHandle bool, name *uint16) (handle Handle, err error) {
2149 var _p0 uint32
2150 if inheritHandle {
2151 _p0 = 1
2152 } else {
2153 _p0 = 0
2154 }
2155 r0, _, e1 := syscall.Syscall(procOpenMutexW.Addr(), 3, uintptr(desiredAccess), uintptr(_p0), uintptr(unsafe.Pointer(name)))
2156 handle = Handle(r0)
2157 if handle == 0 {
2158 if e1 != 0 {
2159 err = errnoErr(e1)
2160 } else {
2161 err = syscall.EINVAL
2162 }
2163 }
2164 return
2165}
90func (cs *clusterStorage) Lock() error {
91 err := cs.mutexGoReady()
92 if err != nil {
93 return err
94 }
95
96 return cs.mutex.Lock()
97}
271func (c *Context) lockWithMutex(mutex *sync.Mutex) {
272 c.mutex.Lock()
273 mutex.Lock()
274}
9func main() {
10 mutex := sync.Mutex{}
11 mutex.Lock()
12 mutex.Unlock()
13 a = 5
14}

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