Method performWrite

chapter7/patterns/semaphore/semaphore.go:200–216

performWrite performs the actual write work.

()

// performWrite performs the actual write work.
func (rw *readerWriter) performWrite() {
	// Wait a random number of milliseconds before we write again.
	time.Sleep(time.Duration(rand.Intn(1000)) * time.Millisecond)

	log.Printf("%s\t: *****> Writing Pending\n", rw.name)

	// Get a write lock for this critical section.
	rw.WriteLock()

	// Simulate some writing work.
	log.Printf("%s\t: *****> Writing Start", rw.name)
	time.Sleep(time.Duration(rand.Intn(1000)) * time.Millisecond)
	log.Printf("%s\t: *****> Writing Finish", rw.name)

	// Release the write lock for this critical section.
	rw.WriteUnlock()
}

// ReadLock guarantees only the maximum number of goroutines can read at a time.
func (rw *readerWriter) ReadLock(reader int) {