author | Mathieu Lacage <mathieu.lacage@sophia.inria.fr> |
Mon, 27 Aug 2007 20:25:15 +0200 | |
changeset 1368 | e75dc1a2a5fb |
parent 1340 | a8d774560c2b |
child 1371 | bebf690257c9 |
permissions | -rw-r--r-- |
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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */ |
956a76f5fd56
a replacement for the Interface base class
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
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/* |
956a76f5fd56
a replacement for the Interface base class
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* Copyright (c) 2007 INRIA, Gustavo Carneiro |
956a76f5fd56
a replacement for the Interface base class
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* |
956a76f5fd56
a replacement for the Interface base class
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* This program is free software; you can redistribute it and/or modify |
956a76f5fd56
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* it under the terms of the GNU General Public License version 2 as |
956a76f5fd56
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* published by the Free Software Foundation; |
956a76f5fd56
a replacement for the Interface base class
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
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* |
956a76f5fd56
a replacement for the Interface base class
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* This program is distributed in the hope that it will be useful, |
956a76f5fd56
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
956a76f5fd56
a replacement for the Interface base class
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
956a76f5fd56
a replacement for the Interface base class
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* GNU General Public License for more details. |
956a76f5fd56
a replacement for the Interface base class
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
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* |
956a76f5fd56
a replacement for the Interface base class
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
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* You should have received a copy of the GNU General Public License |
956a76f5fd56
a replacement for the Interface base class
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
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* along with this program; if not, write to the Free Software |
956a76f5fd56
a replacement for the Interface base class
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
956a76f5fd56
a replacement for the Interface base class
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
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* |
956a76f5fd56
a replacement for the Interface base class
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* Authors: Gustavo Carneiro <gjcarneiro@gmail.com>, |
956a76f5fd56
a replacement for the Interface base class
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* Mathieu Lacage <mathieu.lacage@sophia.inria.fr> |
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*/ |
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#ifndef OBJECT_H |
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#define OBJECT_H |
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|
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#include <stdint.h> |
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#include <string> |
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#include "ptr.h" |
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|
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namespace ns3 { |
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class TraceResolver; |
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class TraceContext; |
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class CallbackBase; |
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/** |
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* \brief a unique identifier for an interface. |
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* |
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* Instances of this class can be created only through |
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* calls to ns3::MakeInterfaceId. |
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* |
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* Note: This class is quite similar to COM's UUIDs. |
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*/ |
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port ComponentManager to Object from Interface
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class InterfaceId |
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{ |
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public: |
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/** |
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* \param name the name of the requested interface |
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* \returns the unique id associated with the requested |
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* name. |
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* |
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* This method cannot fail: it will crash if the input |
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* name is not a valid interface name. |
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*/ |
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static InterfaceId LookupByName (std::string name); |
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/** |
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* \param iid a unique id |
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* \returns the parent of the requested id, as registered |
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* by ns3::MakeInterfaceId. |
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* |
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* This method cannot fail: it will crash if the input |
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* id is not a valid interface id. |
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*/ |
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static InterfaceId LookupParent (InterfaceId iid); |
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~InterfaceId (); |
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private: |
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InterfaceId (uint16_t iid); |
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friend InterfaceId MakeInterfaceId (std::string name, const InterfaceId &parent); |
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friend InterfaceId MakeObjectInterfaceId (void); |
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friend bool operator == (const InterfaceId &a, const InterfaceId &b); |
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friend bool operator != (const InterfaceId &a, const InterfaceId &b); |
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uint16_t m_iid; |
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}; |
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/** |
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* \param name of the new InterfaceId to create. |
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* \param parent the "parent" of the InterfaceId to create. |
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* \returns a new InterfaceId |
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* \relates InterfaceId |
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* |
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* Every InterfaceId is a child of another InterfaceId. The |
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* top-most InterfaceId is Object::iid and its parent is |
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* itself. |
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*/ |
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InterfaceId |
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MakeInterfaceId (std::string name, const InterfaceId &parent); |
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/** |
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* \brief a base class which provides memory management and object aggregation |
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* |
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* Note: This base class is quite similar in spirit to IUnknown in COM or |
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* BonoboObject in Bonobo: it provides three main methods: Ref, Unref and |
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* QueryInterface. |
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*/ |
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class Object |
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{ |
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public: |
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static const InterfaceId iid; |
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Object (); |
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virtual ~Object (); |
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/** |
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* Increment the reference count. This method should not be called |
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* by user code. Object instances are expected to be used in conjunction |
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* of the Ptr template which would make calling Ref unecessary and |
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* dangerous. |
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*/ |
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inline void Ref (void) const; |
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/** |
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* Decrement the reference count. This method should not be called |
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* by user code. Object instances are expected to be used in conjunction |
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* of the Ptr template which would make calling Ref unecessary and |
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* dangerous. |
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*/ |
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inline void Unref (void) const; |
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/** |
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* \param iid the interface requested |
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* \returns a pointer to the requested interface or zero if it could not be found. |
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* |
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*/ |
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template <typename T> |
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Ptr<T> QueryInterface (InterfaceId iid) const; |
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/** |
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* Run the DoDispose methods of this object and all the |
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* objects aggregated to it. |
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* After calling this method, the object is expected to be |
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* totally unusable except for the Ref and Unref methods. |
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* It is an error to call Dispose twice on the same object |
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* instance |
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*/ |
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void Dispose (void); |
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/** |
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* \param other another object pointer |
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* |
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* This method aggregates the two objects together: after this |
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* method returns, it becomes possible to call QueryInterface |
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* on one to get the other, and vice-versa. |
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*/ |
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void AddInterface (Ptr<Object> other); |
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void TraceConnect (std::string path, const CallbackBase &cb); |
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void TraceDisconnect (std::string path, const CallbackBase &cb); |
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virtual Ptr<TraceResolver> GetTraceResolver (void); |
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protected: |
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/** |
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* \param iid an InterfaceId |
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* |
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* Every subclass which defines a new InterfaceId for itself |
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* should register this InterfaceId by calling this method |
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* from its constructor. |
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*/ |
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void SetInterfaceId (InterfaceId iid); |
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/** |
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* This method is called by Object::Dispose. |
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* Subclasses are expected to override this method and chain |
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* up to their parent's implementation once they are done. |
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*/ |
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virtual void DoDispose (void); |
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private: |
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Ptr<Object> DoQueryInterface (InterfaceId iid) const; |
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bool Check (void) const; |
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void MaybeDelete (void) const; |
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mutable uint32_t m_count; |
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InterfaceId m_iid; |
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bool m_disposed; |
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Object *m_next; |
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}; |
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} // namespace ns3 |
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namespace ns3 { |
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void |
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Object::Ref (void) const |
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{ |
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m_count++; |
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} |
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void |
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178 |
Object::Unref (void) const |
701
aa179c876b22
optimization suggested by gustavo
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
699
diff
changeset
|
179 |
{ |
aa179c876b22
optimization suggested by gustavo
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parents:
699
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|
180 |
NS_ASSERT (Check ()); |
aa179c876b22
optimization suggested by gustavo
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parents:
699
diff
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|
181 |
m_count--; |
aa179c876b22
optimization suggested by gustavo
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parents:
699
diff
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|
182 |
if (m_count == 0) |
aa179c876b22
optimization suggested by gustavo
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
699
diff
changeset
|
183 |
{ |
aa179c876b22
optimization suggested by gustavo
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
699
diff
changeset
|
184 |
MaybeDelete (); |
aa179c876b22
optimization suggested by gustavo
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
699
diff
changeset
|
185 |
} |
aa179c876b22
optimization suggested by gustavo
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
699
diff
changeset
|
186 |
} |
aa179c876b22
optimization suggested by gustavo
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
699
diff
changeset
|
187 |
|
699
956a76f5fd56
a replacement for the Interface base class
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff
changeset
|
188 |
template <typename T> |
956a76f5fd56
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parents:
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189 |
Ptr<T> |
709
b5c7825babf3
make QueryInterface const
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
708
diff
changeset
|
190 |
Object::QueryInterface (InterfaceId iid) const |
699
956a76f5fd56
a replacement for the Interface base class
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parents:
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changeset
|
191 |
{ |
706
8b0bf4623c9d
rename InterfaceObject to Object
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
703
diff
changeset
|
192 |
Ptr<Object> found = DoQueryInterface (iid); |
699
956a76f5fd56
a replacement for the Interface base class
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parents:
diff
changeset
|
193 |
if (found != 0) |
956a76f5fd56
a replacement for the Interface base class
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff
changeset
|
194 |
{ |
956a76f5fd56
a replacement for the Interface base class
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff
changeset
|
195 |
return Ptr<T> (dynamic_cast<T *> (PeekPointer (found))); |
956a76f5fd56
a replacement for the Interface base class
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff
changeset
|
196 |
} |
956a76f5fd56
a replacement for the Interface base class
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff
changeset
|
197 |
return 0; |
956a76f5fd56
a replacement for the Interface base class
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff
changeset
|
198 |
} |
956a76f5fd56
a replacement for the Interface base class
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff
changeset
|
199 |
|
956a76f5fd56
a replacement for the Interface base class
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff
changeset
|
200 |
} // namespace ns3 |
956a76f5fd56
a replacement for the Interface base class
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parents:
diff
changeset
|
201 |
|
706
8b0bf4623c9d
rename InterfaceObject to Object
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
703
diff
changeset
|
202 |
#endif /* OBJECT_H */ |
699
956a76f5fd56
a replacement for the Interface base class
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
diff
changeset
|
203 |