ceph/src/common/RefCountedObj.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 "include/ceph_assert.h"
   5
   6 #include "common/RefCountedObj.h"
   7 #include "common/ceph_context.h"
   8 #include "common/dout.h"
   9 #include "common/valgrind.h"
  10
  11 namespace TOPNSPC::common {
  12 RefCountedObject::~RefCountedObject()
  13 {
  14   ceph_assert(nref == 0);
  15 }
  16
  17 void RefCountedObject::put() const {
  18   CephContext *local_cct = cct;
  19   auto v = --nref;
  20   if (local_cct) {
  21     lsubdout(local_cct, refs, 1) << "RefCountedObject::put " << this << " "
  22                    << (v + 1) << " -> " << v
  23                    << dendl;
  24   }
  25   if (v == 0) {
  26     ANNOTATE_HAPPENS_AFTER(&nref);
  27     ANNOTATE_HAPPENS_BEFORE_FORGET_ALL(&nref);
  28     delete this;
  29   } else {
  30     ANNOTATE_HAPPENS_BEFORE(&nref);
  31   }
  32 }
  33
  34 void RefCountedObject::_get() const {
  35   auto v = ++nref;
  36   ceph_assert(v > 1); /* it should never happen that _get() sees nref == 0 */
  37   if (cct) {
  38     lsubdout(cct, refs, 1) << "RefCountedObject::get " << this << " "
  39              << (v - 1) << " -> " << v << dendl;
  40   }
  41 }
  42
  43 }