Method next

3rd_party/Src/ode/ode/src/obstack.cpp:117–130

void *dObStack::next (int num_bytes)
{
  // this functions like alloc, except that no new storage is ever allocated
  if (!current_arena) return 0;
  current_ofs += num_bytes;
  ROUND_UP_OFFSET_TO_EFFICIENT_SIZE (current_arena,current_ofs);
  if (current_ofs >= current_arena->used) {
    current_arena = current_arena->next;
    if (!current_arena) return 0;
    current_ofs = sizeof (Arena);
    ROUND_UP_OFFSET_TO_EFFICIENT_SIZE (current_arena,current_ofs);
  }
  return ((char*) current_arena) + current_ofs;
}