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Implement "weak pointer" behavior on Topology Path canonicalization hash table.

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This commit is contained in:
Adam Ierymenko 2016-09-02 12:34:02 -07:00
parent d1101441b3
commit 4931e44998
3 changed files with 49 additions and 57 deletions
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28
node/SharedPtr.hpp
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@ -119,15 +119,39 @@ public:
inline T *ptr() const throw() { return _ptr; }
/**
* Set this pointer to null
* Set this pointer to NULL
*/
inline void zero()
{
if (_ptr) {
if (--_ptr->__refCount <= 0)
delete _ptr;
_ptr = (T *)0;
}
}
/**
* Set this pointer to NULL if this is the only pointer holding the object
*
* @return True if object was deleted and SharedPtr is now NULL (or was already NULL)
*/
inline bool reclaimIfWeak()
{
if (_ptr) {
if (++_ptr->__refCount <= 2) {
if (--_ptr->__refCount <= 1) {
delete _ptr;
_ptr = (T *)0;
return true;
} else {
return false;
}
} else {
return false;
}
} else {
return true;
}
_ptr = (T *)0;
}
inline bool operator==(const SharedPtr &sp) const throw() { return (_ptr == sp._ptr); }