Question

I am writing some class in c# that have a function

Print(string s)

In the last version i found out that this function called from many threads and every time this function called it should be locked. In C language i can rename this function to

PrintA(string s) 

and change the header file to something like

#define Print(a) {Lock(PrintA) //
                  { //
                      PrintA(a) //
                  } //
                 } 

Is it possible to write something like this in C#?
I just want to change one place instead multiple place all over the code.

Answer 1

There are no macros in C#. To add synchronization to a method, you can use:

void Print(string s)
{
    lock (lockObject) { PrintA(s); }
}

You’ll need to define a lock object, simply add a field to your class

private readonly object lockObject = new object();

[MethodImpl(MethodImplOptions.Synchronized)] is less recommended as it uses this as the lock object, which means users can interfere with locking logic and cause deadlocks.