threads.C
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1 // The libMesh Finite Element Library.
2 // Copyright (C) 2002-2014 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner
3 
4 // This library is free software; you can redistribute it and/or
5 // modify it under the terms of the GNU Lesser General Public
6 // License as published by the Free Software Foundation; either
7 // version 2.1 of the License, or (at your option) any later version.
8 
9 // This library is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 // Lesser General Public License for more details.
13 
14 // You should have received a copy of the GNU Lesser General Public
15 // License along with this library; if not, write to the Free Software
16 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 
18 
19 // System Includes
20 
21 // Local Includes
22 #include "libmesh/threads.h"
23 
24 #if LIBMESH_HAVE_OPENMP
25 #include <omp.h>
26 #endif
27 
28 namespace libMesh
29 {
30 
31 #if !defined(LIBMESH_HAVE_TBB_API) && defined(LIBMESH_HAVE_PTHREAD)
32  std::map<pthread_t, unsigned int> Threads::_pthread_unique_ids;
34 
36  {
37 #if LIBMESH_HAVE_OPENMP
38  return omp_get_thread_num();
39 #else
40  spin_mutex::scoped_lock lock(_pthread_unique_id_mutex);
41  return _pthread_unique_ids[pthread_self()];
42 #endif
43  }
44 #endif
45 
46 //-------------------------------------------------------------------------
47 // Threads:: object instantiation
50 bool Threads::in_threads = false;
51 
52 
53 } // namespace libMesh

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