Guidelines of when to use locking
- by miguel
I would like to know if there are any guidelineswhich a developer should follow as to when (and where) to place locks.
For instance: I understand that code such as this should be locked, to avoid the possibility of another thread changing the value of SomeHeapValue unexpectedly.
class Foo
{
public SomeHeapObject myObject;
public void DoSummat(object inputValue_)
{
myObject.SomeHeapValue = inputValue_;
}
}
My question is, however, how deep does one go with the locking? For instance, if we have this code:
class Foo
{
public SomeHeapObject myObject;
public void DoSummat(object inputValue_)
{
myObject.SomeHeapValue = GetSomeHeapValue();
}
}
Should we lock in the DoSummat(...) method, or should we lock in the GetSomeHeapValue() method?
Are there any guidelines that you all keep in mind when strcturing multi-threaded code?
