Orocos Real-Time Toolkit  2.8.3
MQTemplateProtocol.hpp
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1 /***************************************************************************
2  tag: Peter Soetens Thu Oct 22 11:59:07 CEST 2009 MQTemplateProtocol.hpp
3 
4  MQTemplateProtocol.hpp - description
5  -------------------
6  begin : Thu October 22 2009
7  copyright : (C) 2009 Peter Soetens
8  email : peter@thesourcworks.com
9 
10  ***************************************************************************
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37 
38 
39 #ifndef ORO_MQ_TEMPATE_PROTOCOL_HPP
40 #define ORO_MQ_TEMPATE_PROTOCOL_HPP
41 
42 #include "MQLib.hpp"
43 #include "../../types/TypeMarshaller.hpp"
44 #include "MQChannelElement.hpp"
46 
47 #include <boost/type_traits/has_virtual_destructor.hpp>
48 #include <boost/static_assert.hpp>
49 
50 namespace RTT
51 { namespace mqueue
52  {
60  template<class T>
62  : public MQTemplateProtocolBase<T>
63  {
64  public:
70  BOOST_STATIC_ASSERT( !boost::has_virtual_destructor<T>::value );
74  typedef T UserType;
75 
76  virtual std::pair<void const*,int> fillBlob( base::DataSourceBase::shared_ptr source, void* blob, int size, void* cookie) const
77  {
78  if ( sizeof(T) <= (unsigned int)size)
79  return std::make_pair(source->getRawConstPointer(), int(sizeof(T)));
80  return std::make_pair((void const*)0,int(0));
81  }
82 
83  virtual bool updateFromBlob(const void* blob, int size, base::DataSourceBase::shared_ptr target, void* cookie) const
84  {
86  assert( size == sizeof(T) );
87  if ( ad ) {
88  ad->set( *(T*)(blob) );
89  return true;
90  }
91  return false;
92  }
93 
94  virtual unsigned int getSampleSize(base::DataSourceBase::shared_ptr ignored, void* cookie) const
95  {
96  // re-implement this in case of complex types, like std::vector<T>.
97  return sizeof(T);
98  }
99  };
100 }
101 }
102 
103 #endif
For each transportable type T, specify the conversion functions.
virtual void set(param_t t)=0
Set this DataSource with a value.
virtual unsigned int getSampleSize(base::DataSourceBase::shared_ptr ignored, void *cookie) const
Returns the size in bytes of a marshalled data element.
For each transportable type T, specify the conversion functions.
T UserType
The given T parameter is the type for reading DataSources.
virtual std::pair< void const *, int > fillBlob(base::DataSourceBase::shared_ptr source, void *blob, int size, void *cookie) const
Create an transportable object for a protocol which contains the value of source. ...
boost::intrusive_ptr< AssignableDataSource< T > > shared_ptr
Use this type to store a pointer to an AssignableDataSource.
Definition: DataSource.hpp:198
static AssignableDataSource< T > * narrow(base::DataSourceBase *db)
This method narrows a base::DataSourceBase to a typeded AssignableDataSource, possibly returning a ne...
Definition: DataSource.inl:72
BOOST_STATIC_ASSERT(!boost::has_virtual_destructor< T >::value)
We don&#39;t support types with virtual functions ! TODO: use this type trait to make the necessary adjus...
boost::intrusive_ptr< DataSourceBase > shared_ptr
Use this type to store a pointer to a DataSourceBase.
Contains TaskContext, Activity, OperationCaller, Operation, Property, InputPort, OutputPort, Attribute.
Definition: Activity.cpp:51
virtual bool updateFromBlob(const void *blob, int size, base::DataSourceBase::shared_ptr target, void *cookie) const
Update target with the contents of blob which is an object of a protocol.