panic_test.go

package main

import (
	"sync"
	"testing"
)

// BenchmarkPanicRecovery	 1000000	      1025 ns/op
func BenchmarkPanicRecovery(b *testing.B) {
	buffer := []byte{0, 1, 2, 3}

	lock := sync.Mutex{}

	for i := 0; i < b.N; i++ {
		lock.Lock()
		go func() {
			defer func() {
				if r := recover(); r != nil {

				}

				lock.Unlock()
			}()

			buffer[5] = 4
		}()
	}
}

// BenchmarkBoundsCheck	 5000000	       548 ns/op
func BenchmarkBoundsCheck(b *testing.B) {
	buffer := []byte{0, 1, 2, 3}

	lock := sync.Mutex{}

	for i := 0; i < b.N; i++ {
		lock.Lock()
		go func() {
			defer func() {
				if r := recover(); r != nil {

				}

				lock.Unlock()
			}()

			if len(buffer) > 5 {
				buffer[5] = 4
			}
		}()
	}
}