We help IT Professionals succeed at work.
Get Started

C++ using a critical section

deleyd
deleyd asked
on
1,684 Views
Last Modified: 2014-01-15
I see a lovely Critical Section wrapper at http://scriptionary.com/2008/08/22/criticalsection-wrapper-class/

Now I just need some example code of how to use it properly. This will be for unmanaged C++ code.

Say I have a class, MyClass, and that class has a private variable, myVariable (an integer, or a long if that's better, or unsigned integer, whatever works best, if it makes a difference), and I want to be able to safely write and read that variable from multiple threads, so I need to make sure one thread isn't writing while another is reading.

So I have a class CriticalSection.h defined (from the link above).

And now I have MyClass.h:
#pragma once
class MyClass
{
public:
  MyClass(void);
  ~MyClass(void);

private:
  int myVariable;
  void ThreadSafeWrite(int i);
  int  ThreadSafeRead();

public:
  SetMyVariable(int i) {
    ThreadSafeWrite(i);
  }
  int GetMyVariable(void) {
    return ThreadSafeRead();
  }
};

Open in new window

Now I'm not sure, do I have MyClass inherit CriticalSection? And how would I implement ThreadSafeRead and ThreadSafeWrite?
Comment
Watch Question
Top Expert 2013
Commented:
This problem has been solved!
Unlock 1 Answer and 10 Comments.
See Answer
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE