ceph/src/crimson/os/seastore/onode.cc

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3
   4 #include "onode.h"
   5 #include "include/encoding.h"
   6
   7 namespace crimson::os::seastore {
   8
   9 size_t Onode::size() const
  10 {
  11   return ceph::encoded_sizeof(*this);
  12 }
  13
  14 void Onode::encode(void* buffer, size_t len)
  15 {
  16   struct [[gnu::packed]] encoded_t {
  17     uint8_t struct_v;
  18     uint8_t struct_compat;
  19     uint32_t struct_len;
  20     uint32_t len;
  21     char data[];
  22   };
  23   auto p = reinterpret_cast<encoded_t*>(buffer);
  24   assert(std::numeric_limits<uint16_t>::max() >= size());
  25   assert(len >= size());
  26   p->struct_v = 1;
  27   p->struct_compat = 1;
  28   p->struct_len = sizeof(encoded_t) + payload.size();
  29   p->len = payload.size();
  30   std::memcpy(p->data, payload.data(), payload.size());
  31 }
  32
  33 bool operator==(const Onode& lhs, const Onode& rhs)
  34 {
  35   return lhs.get() == rhs.get();
  36 }
  37
  38 std::ostream& operator<<(std::ostream &out, const Onode &rhs)
  39 {
  40   return out << rhs.get();
  41 }
  42
  43 }
  44