Исходники и презентации

lessons/sync_primitives/atomic_performance/perf_test.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"sync"
+	"sync/atomic"
+	"testing"
+)
+
+// go test -bench=. perf_test.go
+
+func BenchmarkMutexAdd(b *testing.B) {
+	var number int32
+	var mutex sync.Mutex
+	for i := 0; i < b.N; i++ {
+		mutex.Lock()
+		number++
+		mutex.Unlock()
+	}
+}
+
+func BenchmarkAtomicAdd(b *testing.B) {
+	var number atomic.Int32
+	for i := 0; i < b.N; i++ {
+		number.Add(1)
+	}
+}
+
+func BenchmarkAdd(b *testing.B) {
+	var number int32
+	for i := 0; i < b.N; i++ {
+		number++
+	}
+}