Readers-Writers Problem with Go

readerswriters.go

package readerswriters

import "sync"

var mutex = new(sync.RWMutex)

func writer(data []byte) {
    mutex.Lock()
    defer mutex.Unlock()
  
    // Write to data.
}

func reader(data []byte) {
    mutex.RLock()
    defer mutex.RUnlock()
  
    // Read from data.
}

func main() {
    for i := 0; i < NumberOfReaders; i++ {
        go reader()
    }
    for i := 0; i < NumberOfWriters; i++ {
        go writer()
    }
}