chore(sync): improved

Change-Id: Ia96d0e564c448c58b3a2bde71c141b2fe8d4a3f2

sync.go

@@ -65,15 +65,15 @@ func (m *Mutex[T]) Unlock(newData ...T) {
 	m.inner.Unlock()
 }
 
-// LockScope securely read and write the data in the mutex.
-func (m *Mutex[T]) LockScope(f func(T) T) {
+// LockScope securely read and write the data in the Mutex[T].
+func (m *Mutex[T]) LockScope(f func(old T) (new T)) {
 	m.inner.Lock()
 	defer m.inner.Unlock()
 	m.data = f(m.data)
 }
 
-// TryLockScope tries to securely read and write the data in the mutex.
-func (m *Mutex[T]) TryLockScope(f func(T) T) {
+// TryLockScope tries to securely read and write the data in the Mutex[T].
+func (m *Mutex[T]) TryLockScope(f func(old T) (new T)) {
 	if m.inner.TryLock() {
 		defer m.inner.Unlock()
 		m.data = f(m.data)
@@ -138,19 +138,19 @@ func (m *RWMutex[T]) Unlock(newData ...T) {
 	m.inner.Unlock()
 }
 
-// TryLockScope tries to securely read and write the data in the mutex.
-func (m *RWMutex[T]) TryLockScope(f func(T) T) {
+// TryLockScope tries to securely read and write the data in the RWMutex[T].
+func (m *RWMutex[T]) TryLockScope(write func(old T) (new T)) {
 	if m.inner.TryLock() {
 		defer m.inner.Unlock()
-		m.data = f(m.data)
+		m.data = write(m.data)
 	}
 }
 
-// LockScope securely read and write the data in the rwmutex.
-func (m *RWMutex[T]) LockScope(f func(T) T) {
+// LockScope securely read and write the data in the RWMutex[T].
+func (m *RWMutex[T]) LockScope(write func(old T) (new T)) {
 	m.inner.Lock()
 	defer m.inner.Unlock()
-	m.data = f(m.data)
+	m.data = write(m.data)
 }
 
 // Happens-before relationships are indicated to the race detector via:
@@ -196,19 +196,19 @@ func (m *RWMutex[T]) RUnlock() {
 	m.inner.RUnlock()
 }
 
-// TryRLockScope tries to securely read the data in the mutex.
-func (m *RWMutex[T]) TryRLockScope(f func(T) T) {
+// TryRLockScope tries to securely read the data in the RWMutex[T].
+func (m *RWMutex[T]) TryRLockScope(read func(T)) {
 	if m.inner.TryRLock() {
 		defer m.inner.RUnlock()
-		m.data = f(m.data)
+		read(m.data)
 	}
 }
 
-// RLockScope securely read the data in the rwmutex.
-func (m *RWMutex[T]) RLockScope(f func(T) T) {
+// RLockScope securely read the data in the RWMutex[T].
+func (m *RWMutex[T]) RLockScope(read func(T)) {
 	m.inner.RLock()
 	defer m.inner.RUnlock()
-	m.data = f(m.data)
+	read(m.data)
 }
 
 // SyncMap is a better generic-type wrapper for `sync.Map`.