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Diffstat (limited to 'ACE/examples/Smart_Pointers/README')
| -rw-r--r-- | ACE/examples/Smart_Pointers/README | 29 |
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diff --git a/ACE/examples/Smart_Pointers/README b/ACE/examples/Smart_Pointers/README new file mode 100644 index 00000000000..a23ea1eb828 --- /dev/null +++ b/ACE/examples/Smart_Pointers/README @@ -0,0 +1,29 @@ +$Id$ + +Smart Pointers Example +---------------------- + +This example shows the use of the various smart pointer classes +available in ACE. + +There are two programs in this example. Each program implements a +similar set of classes, but with a different style of using smart +pointers. + +The Widget example is written such that objects may only pass raw +pointers between them, and use smart pointers to manage the object +lifetimes. An advantage of this style is the fine-grained control +over the type of smart pointer used in each situation. For example, +if you know that in a particular section of code there is no +concurrency involved, you can strategise ACE_Refcounted_Auto_Ptr on +ACE_Null_Mutex to eliminate locking overhead. Disadvantages of this +style include greater programming complexity and certain ownership +use cases not being easily supported. + +The Gadget example is written such that objects are always passed +around using one of the ACE_Strong_Bound_Ptr/ACE_Weak_Bound_Ptr +pair of smart pointers. The advantage of this style is the +reduction in complexity of object lifetime management (almost as +"good" as Java ;-) The disadvantage is that you pay a cost for the +reference counting and locking overhead even in situations where it +may not be strictly necessary. |