Comm_Group_Noparallel.cpp

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#include <Comm_Group_Noparallel.h>
#include <cstring>
 
Implemente_instanciable_sans_constructeur_ni_destructeur(Comm_Group_Noparallel,"Comm_Group_Noparallel",Comm_Group);
 
int Comm_Group_Noparallel::sending_ = 0;
 
/*! @brief Constructor for the "All" group.
 *
 */
Comm_Group_Noparallel::Comm_Group_Noparallel() { Comm_Group::init_group_trio(1 /* nproc */, 0 /* rank */); }
Comm_Group_Noparallel::~Comm_Group_Noparallel() { }
 
/*! @brief Constructor for a sub-group.
 *
 */
void Comm_Group_Noparallel::init_group(const ArrOfInt& pe_list)
{
  assert(pe_list.size_array() == 1);
  Comm_Group::init_group(pe_list);
}
 
void Comm_Group_Noparallel::abort() const { }
 
Sortie& Comm_Group_Noparallel::printOn(Sortie& os) const
{
  assert(0);
  exit();
  return os;
}
 
Entree& Comm_Group_Noparallel::readOn(Entree& is)
{
  assert(0);
  exit();
  return is;
}
 
void Comm_Group_Noparallel::barrier(int tag) const { return; }
 
int Comm_Group_Noparallel::reverse_send_recv_list(const ArrOfInt& src_list, ArrOfInt& dest_list) const
{
  assert(src_list.size_array() == 0);
  assert(dest_list.size_array() == 0);
  return 0;
}
 
void Comm_Group_Noparallel::send_recv_start(const ArrOfInt& send_list, const ArrOfInt& send_size, const char *const*const send_buffers, const ArrOfInt& recv_list, const ArrOfInt& recv_size,
                                            char *const*const recv_buffers, TypeHint typehint) const
{
  assert(sending_ == 0);
  if (send_list.size_array() == 1 && send_list[0] == 0 &&
      recv_list.size_array() == 1 && recv_list[0] == 0 &&
      send_size.size_array() == 1 && recv_size.size_array() == 1
      && send_size[0] == recv_size[0])
    {
      memcpy(recv_buffers[0], send_buffers[0], send_size[0]);
    }
  else
    {
      assert(recv_list.size_array() == 0);
      assert(send_list.size_array() == 0);
    }
  sending_ = 1;
  return;
}
 
void Comm_Group_Noparallel::send_recv_finish() const
{
  assert(sending_);
  sending_ = 0;
}
 
void Comm_Group_Noparallel::send(int pe, const void *buffer, int size, int tag) const { assert(0); }
 
void Comm_Group_Noparallel::recv(int pe, void *buffer, int size, int tag) const { assert(0); }
 
void Comm_Group_Noparallel::broadcast(void *buffer, int size, int pe_source) const { return; }
 
void Comm_Group_Noparallel::all_to_all(const void *src_buffer, void *dest_buffer, int data_size) const
{
  memcpy(dest_buffer, src_buffer, data_size);
}
 
void Comm_Group_Noparallel::gather(const void *src_buffer, void *dest_buffer, int data_size, int root) const
{
  memcpy(dest_buffer, src_buffer, data_size);
}
 
void Comm_Group_Noparallel::all_gather(const void *src_buffer, void *dest_buffer, int data_size) const
{
  memcpy(dest_buffer, src_buffer, data_size);
}
 
void Comm_Group_Noparallel::all_gatherv(const void *src_buffer, void *dest_buffer, int send_size, const int* recv_size, const int* displs) const
{
  memcpy(dest_buffer, src_buffer, recv_size[0]);
}