HDK
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Pages
StreamManager.h
Go to the documentation of this file.
1 //-*****************************************************************************
2 //
3 // Copyright (c) 2013,
4 // Sony Pictures Imageworks Inc. and
5 // Industrial Light & Magic, a division of Lucasfilm Entertainment Company Ltd.
6 //
7 // All rights reserved.
8 //
9 // Redistribution and use in source and binary forms, with or without
10 // modification, are permitted provided that the following conditions are
11 // met:
12 // * Redistributions of source code must retain the above copyright
13 // notice, this list of conditions and the following disclaimer.
14 // * Redistributions in binary form must reproduce the above
15 // copyright notice, this list of conditions and the following disclaimer
16 // in the documentation and/or other materials provided with the
17 // distribution.
18 // * Neither the name of Sony Pictures Imageworks, nor
19 // Industrial Light & Magic, nor the names of their contributors may be used
20 // to endorse or promote products derived from this software without specific
21 // prior written permission.
22 //
23 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
26 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
27 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
28 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
29 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
30 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
31 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
32 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
33 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 //
35 //-*****************************************************************************
36 
37 #ifndef _Alembic_AbcCoreOgawa_StreamManager_h_
38 #define _Alembic_AbcCoreOgawa_StreamManager_h_
39 
42 
43 #if !defined(ALEMBIC_LIB_USES_TR1) && __cplusplus >= 201103L
44 #include <atomic>
45 #endif
46 
47 namespace Alembic {
48 namespace AbcCoreOgawa {
49 namespace ALEMBIC_VERSION_NS {
50 
51 class StreamID;
52 typedef Alembic::Util::shared_ptr< StreamID > StreamIDPtr;
53 
54 //-*****************************************************************************
56 {
57 public:
58  StreamManager( std::size_t iNumStreams );
60  StreamIDPtr get();
61 private:
62  friend class StreamID;
63  void put( std::size_t iStreamID );
64 
65  std::size_t m_numStreams;
66 
67  // for the locked implementation
68  std::vector< std::size_t > m_streamIDs;
69  std::size_t m_curStream;
70  Alembic::Util::mutex m_lock;
71 
72  // for the CAS impl
73 #if !defined(ALEMBIC_LIB_USES_TR1) && __cplusplus >= 201103L
74  std::atomic< Alembic::Util::int64_t > m_streams;
75 #else
76  Alembic::Util::int64_t m_streams;
77 #endif
78 
79  StreamIDPtr m_default;
80 };
81 
82 //-*****************************************************************************
84 {
85 public:
86  ~StreamID();
87  std::size_t getID() { return m_streamID; }
88 private:
89  friend class StreamManager;
90  StreamID( StreamManager * iManager, std::size_t iStreamID );
91  StreamManager * m_manager;
92  std::size_t m_streamID;
93 };
94 
95 
96 } // End namespace ALEMBIC_VERSION_NS
97 
98 using namespace ALEMBIC_VERSION_NS;
99 
100 } // End namespace AbcCoreOgawa
101 } // End namespace Alembic
102 
103 #endif
Alembic::Util::shared_ptr< StreamID > StreamIDPtr
Definition: StreamManager.h:51
#define ALEMBIC_VERSION_NS
Definition: Foundation.h:104