HOWTO resolve circular references in ns-3 memory disposal: Difference between revisions
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| Line 5: | Line 5: | ||
public: | public: | ||
static TypeId GetTypeId (void); | static TypeId GetTypeId (void); | ||
Callback<void> m_callback; | Callback<void> m_callback; | ||
}; | }; | ||
| Line 12: | Line 11: | ||
public: | public: | ||
static TypeId GetTypeId (void); | static TypeId GetTypeId (void); | ||
void CallbackMethodB() | void CallbackMethodB (void); | ||
}; | }; | ||
<pre> | <pre> | ||
int main(int argc, char* argv[]) | int main(int argc, char* argv[]) | ||
| Line 40: | Line 28: | ||
==15749== still reachable: 10,360 bytes in 5 blocks | ==15749== still reachable: 10,360 bytes in 5 blocks | ||
==15749== suppressed: 0 bytes in 0 blocks | ==15749== suppressed: 0 bytes in 0 blocks | ||
The preferred way to handle reference cycles like this in ns-3 is to use Object::Dispose(). This method will call the DoDispose method on the object that it is called on as well as all other objects aggregated on to it. | |||
Revision as of 17:43, 30 August 2013
HOWTO resolve smart pointer circular references in ns-3 memory disposal
class A : public Object
{
public:
static TypeId GetTypeId (void);
Callback<void> m_callback;
};
class B : public Object
{
public:
static TypeId GetTypeId (void);
void CallbackMethodB (void);
};
int main(int argc, char* argv[])
{
Ptr<A> a = CreateObject<A>();
Ptr<B> b = CreateObject<B>();
a->m_callback = MakeCallback (&B::CallbackMethodB, b);
b->AggregateObject(a);
}
==15749== LEAK SUMMARY:
==15749== definitely lost: 40 bytes in 1 blocks
==15749== indirectly lost: 152 bytes in 5 blocks
==15749== possibly lost: 0 bytes in 0 blocks
==15749== still reachable: 10,360 bytes in 5 blocks
==15749== suppressed: 0 bytes in 0 blocks
The preferred way to handle reference cycles like this in ns-3 is to use Object::Dispose(). This method will call the DoDispose method on the object that it is called on as well as all other objects aggregated on to it.