Teuchos Package Browser (Single Doxygen Collection)  Version of the Day
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Groups Pages
Teuchos_RCPStdSharedPtrConversions.hpp
Go to the documentation of this file.
1 // @HEADER
2 // ***********************************************************************
3 //
4 // Teuchos: Common Tools Package
5 // Copyright (2004) Sandia Corporation
6 //
7 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
8 // license for use of this work by or on behalf of the U.S. Government.
9 //
10 // Redistribution and use in source and binary forms, with or without
11 // modification, are permitted provided that the following conditions are
12 // met:
13 //
14 // 1. Redistributions of source code must retain the above copyright
15 // notice, this list of conditions and the following disclaimer.
16 //
17 // 2. Redistributions in binary form must reproduce the above copyright
18 // notice, this list of conditions and the following disclaimer in the
19 // documentation and/or other materials provided with the distribution.
20 //
21 // 3. Neither the name of the Corporation nor the names of the
22 // contributors may be used to endorse or promote products derived from
23 // this software without specific prior written permission.
24 //
25 // THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
26 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
29 // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
30 // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
31 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
32 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 //
37 // Questions? Contact Michael A. Heroux (maherou@sandia.gov)
38 //
39 // ***********************************************************************
40 // @HEADER
41 
42 #ifndef TEUCHOS_RCP_STD_SHAREDPTR_CONVERSIONS_HPP
43 #define TEUCHOS_RCP_STD_SHAREDPTR_CONVERSIONS_HPP
44 
46 #include "Teuchos_RCP.hpp"
47 
48 
49 template<class T>
51 Teuchos::rcp( const std::shared_ptr<T> &sptr )
52 {
53  if (sptr.get()) {
54  // First, see if the RCP is in the shared_ptr deleter object
55  const StdSharedPtrRCPDeleter<T>
56  *rcpd = std::get_deleter<StdSharedPtrRCPDeleter<T> >(sptr);
57  if (rcpd) {
58  return rcpd->ptr();
59  }
60 #ifdef TEUCHOS_DEBUG
61  // Second, see if the an RCP node pointing to this type already exists
62  // from being wrapped already from a prior call to this function where the
63  // add_new_RCPNode(...) function could have been called already!.
64  RCPNode* existingRCPNode = RCPNodeTracer::getExistingRCPNode(sptr.get());
65  if (existingRCPNode) {
66  return RCP<T>(sptr.get(), RCPNodeHandle(existingRCPNode, RCP_STRONG, false));
67  }
68 #endif
69  // Lastly, we just create a new RCP and RCPNode ...
70  return rcpWithDealloc(sptr.get(), DeallocStdSharedPtr<T>(sptr), true);
71  }
72  return null;
73 }
74 
75 
76 template<class T>
77 std::shared_ptr<T>
78 Teuchos::get_shared_ptr( const RCP<T> &rcp )
79 {
80  if (nonnull(rcp)) {
81  Ptr<const DeallocStdSharedPtr<T> >
82  dbsp = get_optional_dealloc<DeallocStdSharedPtr<T> >(rcp);
83  if (nonnull(dbsp)) {
84  return dbsp->ptr();
85  }
86  return std::shared_ptr<T>(rcp.get(), StdSharedPtrRCPDeleter<T>(rcp));
87  }
88  return std::shared_ptr<T>();
89 }
90 
91 
92 #endif // TEUCHOS_RCP_STD_SHAREDPTR_CONVERSIONS_HPP
RCP< T > rcp(const boost::shared_ptr< T > &sptr)
Conversion function that takes in a boost::shared_ptr object and spits out a Teuchos::RCP object...
TEUCHOS_DEPRECATED RCP< T > rcp(T *p, Dealloc_T dealloc, bool owns_mem)
Deprecated.
Smart reference counting pointer class for automatic garbage collection.
RCP< T > rcpWithDealloc(T *p, Dealloc_T dealloc, bool owns_mem=true)
Initialize from a raw pointer with a deallocation policy.
Reference-counted pointer class and non-member templated function implementations.
bool nonnull(const ArrayRCP< T > &p)
Returns true if p.get()!=NULL.