VB.net: is a safe solution for my stream really safe?

Question

I added the following extensions for my project to create a list of safe threads:

Extensions If I want to perform a simple operation on my list

   <Extension()> _
    Public Sub Action(Of T)(ByVal list As List(Of T), ByVal action As Action(Of List(Of T)))
        SyncLock (list)
            action(list)
        End SyncLock
    End Sub

If I want to pass more than one parameter, I could just expand it with more elements ...

<Extension()> _
Public Sub Action(Of T)(ByVal list As List(Of T), ByVal action As Action(Of List(Of T), T), ByVal item As T)
    SyncLock (list)
        Action(list, item)
    End SyncLock
End Sub

Actions I created the following example actions:

Private Sub Read(Of T)(ByVal list As List(Of T))
    Console.WriteLine("Read")
    For Each item As T In list
        Console.WriteLine(item.ToString)
        Thread.Sleep(10)
    Next
End Sub

as well as one that takes a parameter:

Private Sub Write(Of T)(ByVal list As List(Of T), ByVal item As T)
    Thread.Sleep(100)
    list.Add(item)
    Console.WriteLine("Write")
End Sub

Initiation Then in my various threads I will call my actions with:

list.Action(AddressOf Read)

or

list.Action(AddressOf Write2, 10)

Are these Extenxion methods safe or do you have other recommendations? It is similar to the List.Foreach method, which performs an action.

Answer 1

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