text: ///////////////////////////////////////////////////////////////////////////
  //
  // Copyright (c) DreamWorks Animation LLC
  //
  // All rights reserved. This software is distributed under the
  // Mozilla Public License 2.0 ( http://www.mozilla.org/MPL/2.0/ )
  //
  // Redistributions of source code must retain the above copyright
  // and license notice and the following restrictions and disclaimer.
  //
  // *     Neither the name of DreamWorks Animation nor the names of
  // its contributors may be used to endorse or promote products derived
  // from this software without specific prior written permission.
  //
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY INDIRECT, INCIDENTAL,
  // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  // IN NO EVENT SHALL THE COPYRIGHT HOLDERS' AND CONTRIBUTORS' AGGREGATE
  // LIABILITY FOR ALL CLAIMS REGARDLESS OF THEIR BASIS EXCEED US$250.00.
  //
  ///////////////////////////////////////////////////////////////////////////
  
  #include "openvdb.h"
  #include "io/DelayedLoadMetadata.h"
  //#ifdef OPENVDB_ENABLE_POINTS
  #include "points/PointDataGrid.h"
  //#endif
  #include "tools/PointIndexGrid.h"
  #include "util/logging.h"
  #include <tbb/mutex.h>
  #ifdef OPENVDB_USE_BLOSC
  #include <blosc.h>
  #endif
  
  // If using an OPENVDB_ABI_VERSION_NUMBER that has been deprecated, issue an error
  // directive. This can be optionally suppressed by defining OPENVDB_USE_DEPRECATED_ABI.
  // Do this in the .cc of openvdb.cc to ensure this decision is made at the time of
  // building the core library
  #ifndef OPENVDB_USE_DEPRECATED_ABI
      #if OPENVDB_ABI_VERSION_NUMBER <= 3
          #error ABI <= 3 is deprecated, define OPENVDB_USE_DEPRECATED_ABI to suppress this error
      #endif
  #endif
  
  namespace openvdb {
  OPENVDB_USE_VERSION_NAMESPACE
  namespace OPENVDB_VERSION_NAME {
  
  typedef tbb::mutex Mutex;
  typedef Mutex::scoped_lock Lock;
  
  namespace {
  // Declare this at file scope to ensure thread-safe initialization.
  Mutex sInitMutex;
  bool sIsInitialized = false;
  }
  
  void
  initialize()
  {
      Lock lock(sInitMutex);
      if (sIsInitialized) return;
  
      logging::initialize();
  
      // Register metadata.
      Metadata::clearRegistry();
      BoolMetadata::registerType();
      DoubleMetadata::registerType();
      FloatMetadata::registerType();
      Int32Metadata::registerType();
      Int64Metadata::registerType();
      StringMetadata::registerType();
      Vec2IMetadata::registerType();
      Vec2SMetadata::registerType();
      Vec2DMetadata::registerType();
      Vec3IMetadata::registerType();
      Vec3SMetadata::registerType();
      Vec3DMetadata::registerType();
      Vec4IMetadata::registerType();
      Vec4SMetadata::registerType();
      Vec4DMetadata::registerType();
      Mat4SMetadata::registerType();
      Mat4DMetadata::registerType();
  
      // Register maps
      math::MapRegistry::clear();
      math::AffineMap::registerMap();
      math::UnitaryMap::registerMap();
      math::ScaleMap::registerMap();
      math::UniformScaleMap::registerMap();
      math::TranslationMap::registerMap();
      math::ScaleTranslateMap::registerMap();
      math::UniformScaleTranslateMap::registerMap();
      math::NonlinearFrustumMap::registerMap();
  
      // Register common grid types.
      GridBase::clearRegistry();
      BoolGrid::registerGrid();
      MaskGrid::registerGrid();
      FloatGrid::registerGrid();
      DoubleGrid::registerGrid();
      Int32Grid::registerGrid();
      Int64Grid::registerGrid();
      StringGrid::registerGrid();
      Vec3IGrid::registerGrid();
      Vec3SGrid::registerGrid();
      Vec3DGrid::registerGrid();
  
      // Register types associated with point index grids.
      Metadata::registerType(typeNameAsString<PointIndex32>(), Int32Metadata::createMetadata);
      Metadata::registerType(typeNameAsString<PointIndex64>(), Int64Metadata::createMetadata);
      tools::PointIndexGrid::registerGrid();
  
      // Register types associated with point data grids.
  //#ifdef OPENVDB_ENABLE_POINTS
      points::internal::initialize();
  //#endif
  
      // Register delay load metadata
      io::DelayedLoadMetadata::registerType();
  
  #ifdef OPENVDB_USE_BLOSC
      blosc_init();
      if (blosc_set_compressor("lz4") < 0) {
          OPENVDB_LOG_WARN("Blosc LZ4 compressor is unavailable");
      }
      /// @todo blosc_set_nthreads(int nthreads);
  #endif
  
  #ifdef __ICC
  // Disable ICC "assignment to statically allocated variable" warning.
  // This assignment is mutex-protected and therefore thread-safe.
  __pragma(warning(disable:1711))
  #endif
  
      sIsInitialized = true;
  
  #ifdef __ICC
  __pragma(warning(default:1711))
  #endif
  }
  
  
  void
  uninitialize()
  {
      Lock lock(sInitMutex);
  
  #ifdef __ICC
  // Disable ICC "assignment to statically allocated variable" warning.
  // This assignment is mutex-protected and therefore thread-safe.
  __pragma(warning(disable:1711))
  #endif
  
      sIsInitialized = false;
  
  #ifdef __ICC
  __pragma(warning(default:1711))
  #endif
  
      Metadata::clearRegistry();
      GridBase::clearRegistry();
      math::MapRegistry::clear();
  
  //#ifdef OPENVDB_ENABLE_POINTS
      points::internal::uninitialize();
  //#endif
  
  #ifdef OPENVDB_USE_BLOSC
      // We don't want to destroy Blosc, because it might have been
      // initialized by some other library.
      //blosc_destroy();
  #endif
  }
  
  } // namespace OPENVDB_VERSION_NAME
  } // namespace openvdb
  
  // Copyright (c) DreamWorks Animation LLC
  // All rights reserved. This software is distributed under the
  // Mozilla Public License 2.0 ( http://www.mozilla.org/MPL/2.0/ )
  