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A reader wote me to ask a question about variable lifetimes. Consider the following code:

class Mutex
{
       public Mutex(string name)
       {
             hMutex = Kernel32.CreateMutex(null,false,name);
             Kernel32.WaitForSingleObject(hMutex,0);
       }
       ~Mutex()
       {
             Kernel32.ReleaseMutex(hMutex);
       }
}
class MyClass
{
       void MyFunc()
       {
             Mutex m = new Mutex("MyGlobalMutex");
              
             // (some code here which accesses, or calls functions which access, a shared resource...
             // Note: no explicit reference to m, especially no call to destroy or clean up m!)
       }
}

Will the mutex will be held for the duration of method MyFunc()?

Answer to follow in the next post