Hi,

I'm looking for some advice on the best approach to synchronising access to properties of an object in C++. The application has an internal cache of objects which have 10 properties. These objects are to be requested in sets which can then have their properties modified and be re-saved. They can be accessed by 2-4 threads at any given time but access is not intense so my options are:

1. Lock the property accessors for each object using a critical section. This means lots of critical sections - one for each object.

2. Return copies of the objects when requested and have an update function which locks a single critical section to update the object properties when appropriate.

I think option 2 seems the most efficient but I just want to see if I'm missing a hidden 3rd option which would be more appropriate.

Thanks, J