src/gromacs/mdtypes/forcebuffers.cpp

   1 /*
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  35 /*! \internal \file
  36  * \brief
  37  * Implements the ForceBuffers class
  38  *
  39  * \author Berk Hess <hess@kth.se>
  40  * \ingroup module_mdtypes
  41  */
  42
  43 #include "gmxpre.h"
  44
  45 #include "forcebuffers.h"
  46
  47 #include "gromacs/gpu_utils/hostallocator.h"
  48
  49 namespace gmx
  50 {
  51
  52 ForceBuffers::ForceBuffers(PinningPolicy pinningPolicy) : force_({}, { pinningPolicy }), view_({})
  53 {
  54 }
  55
  56 ForceBuffers::~ForceBuffers() = default;
  57
  58 ForceBuffers& ForceBuffers::operator=(ForceBuffers const& o)
  59 {
  60     auto oForce = o.view().force();
  61     resize(oForce.size());
  62     std::copy(oForce.begin(), oForce.end(), view().force().begin());
  63
  64     return *this;
  65 }
  66
  67 PinningPolicy ForceBuffers::pinningPolicy() const
  68 {
  69     return force_.get_allocator().pinningPolicy();
  70 }
  71
  72 void ForceBuffers::resize(int numAtoms)
  73 {
  74     force_.resizeWithPadding(numAtoms);
  75     view_ = ForceBuffersView(force_.arrayRefWithPadding());
  76 }
  77
  78 } // namespace gmx