Imported healpix tree

external/healpix/cxxsupport/openmp_support.h

@@ -0,0 +1,89 @@
+/*
+ *  This file is part of libcxxsupport.
+ *
+ *  libcxxsupport is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  libcxxsupport is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with libcxxsupport; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+/*
+ *  libcxxsupport is being developed at the Max-Planck-Institut fuer Astrophysik
+ *  and financially supported by the Deutsches Zentrum fuer Luft- und Raumfahrt
+ *  (DLR).
+ */
+
+/*
+ *  Copyright (C) 2005, 2006, 2007, 2009, 2010 Max-Planck-Society
+ *  \author Martin Reinecke
+ */
+
+#ifndef PLANCK_OPENMP_SUPPORT_H
+#define PLANCK_OPENMP_SUPPORT_H
+
+#ifdef _OPENMP
+#include <omp.h>
+#endif
+
+#include "cxxutils.h"
+
+inline bool openmp_enabled()
+  {
+#ifdef _OPENMP
+  return true;
+#else
+  return false;
+#endif
+  }
+
+inline int openmp_max_threads ()
+  {
+#ifdef _OPENMP
+  return omp_get_max_threads();
+#else
+  return 1;
+#endif
+  }
+
+inline int openmp_num_threads ()
+  {
+#ifdef _OPENMP
+  return omp_get_num_threads();
+#else
+  return 1;
+#endif
+  }
+
+inline int openmp_thread_num ()
+  {
+#ifdef _OPENMP
+  return omp_get_thread_num();
+#else
+  return 0;
+#endif
+  }
+
+/*! Calculates the range of indices between \a glo and \a ghi which
+    must be processed by this thread and returns it in \a lo and \a hi.
+
+    The indices \a ghi and \a hi are "one past the last real index",
+    in analogy to the STL iterators. */
+inline void openmp_calc_share (int64 glo, int64 ghi, int64 &lo, int64 &hi)
+  {
+#ifdef _OPENMP
+  calcShareGeneral (glo,ghi,omp_get_num_threads(),omp_get_thread_num(),lo,hi);
+#else
+  lo=glo; hi=ghi;
+#endif
+  }
+
+#endif