icuSources/common/sharedobject.cpp

   1 /*
   2 ******************************************************************************
   3 * Copyright (C) 2014, International Business Machines
   4 * Corporation and others.  All Rights Reserved.
   5 ******************************************************************************
   6 * sharedobject.cpp
   7 */
   8 #include "sharedobject.h"
   9
  10 U_NAMESPACE_BEGIN
  11 SharedObject::~SharedObject() {}
  12
  13 void
  14 SharedObject::addRef() const {
  15     umtx_atomic_inc(&totalRefCount);
  16 }
  17
  18 void
  19 SharedObject::removeRef() const {
  20     if(umtx_atomic_dec(&totalRefCount) == 0) {
  21         delete this;
  22     }
  23 }
  24
  25 void
  26 SharedObject::addSoftRef() const {
  27     addRef();
  28     umtx_atomic_inc(&softRefCount);
  29 }
  30
  31 void
  32 SharedObject::removeSoftRef() const {
  33     umtx_atomic_dec(&softRefCount);
  34     removeRef();
  35 }
  36
  37 UBool
  38 SharedObject::allSoftReferences() const {
  39     return umtx_loadAcquire(totalRefCount) == umtx_loadAcquire(softRefCount);
  40 }
  41
  42 int32_t
  43 SharedObject::getRefCount() const {
  44     return umtx_loadAcquire(totalRefCount);
  45 }
  46
  47 int32_t
  48 SharedObject::getSoftRefCount() const {
  49     return umtx_loadAcquire(softRefCount);
  50 }
  51
  52 void
  53 SharedObject::deleteIfZeroRefCount() const {
  54     if(getRefCount() == 0) {
  55         delete this;
  56     }
  57 }
  58
  59 U_NAMESPACE_END