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Bug 1161627 - part 3 - remove TemporaryRef<T> from RefPtr.h; r=ehsan

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This commit is contained in:
Nathan Froyd 2015-05-05 13:22:12 -04:00
parent 974d8120f2
commit a2f2f68970
1 changed files with 1 additions and 53 deletions
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54
mfbt/RefPtr.h
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@ -30,7 +30,6 @@ namespace mozilla {
template<typename T> class RefCounted;
template<typename T> class RefPtr;
template<typename T> class TemporaryRef;
template<typename T> class OutParamRef;
template<typename T> OutParamRef<T> byRef(RefPtr<T>&);
@ -227,7 +226,6 @@ template<typename T>
class RefPtr
{
// To allow them to use unref()
friend class TemporaryRef<T>;
friend class OutParamRef<T>;
struct DontRef {};
@ -235,7 +233,6 @@ class RefPtr
public:
RefPtr() : mPtr(0) {}
RefPtr(const RefPtr& aOther) : mPtr(ref(aOther.mPtr)) {}
MOZ_IMPLICIT RefPtr(const TemporaryRef<T>& aOther) : mPtr(aOther.take()) {}
MOZ_IMPLICIT RefPtr(already_AddRefed<T>& aOther) : mPtr(aOther.take()) {}
MOZ_IMPLICIT RefPtr(already_AddRefed<T>&& aOther) : mPtr(aOther.take()) {}
MOZ_IMPLICIT RefPtr(T* aVal) : mPtr(ref(aVal)) {}
@ -250,11 +247,6 @@ public:
assign(ref(aOther.mPtr));
return *this;
}
RefPtr& operator=(const TemporaryRef<T>& aOther)
{
assign(aOther.take());
return *this;
}
RefPtr& operator=(already_AddRefed<T>& aOther)
{
assign(aOther.take());
@ -315,50 +307,6 @@ private:
}
};
/**
* TemporaryRef<T> represents an object that holds a temporary
* reference to a T. TemporaryRef objects can't be manually ref'd or
* unref'd (being temporaries, not lvalues), so can only relinquish
* references to other objects, or unref on destruction.
*/
template<typename T>
class TemporaryRef
{
// To allow it to construct TemporaryRef from a bare T*
friend class RefPtr<T>;
typedef typename RefPtr<T>::DontRef DontRef;
public:
// Please see already_AddRefed for a description of what these constructors
// do.
TemporaryRef() : mPtr(nullptr) {}
typedef void (TemporaryRef::* MatchNullptr)(double, float);
MOZ_IMPLICIT TemporaryRef(MatchNullptr aRawPtr) : mPtr(nullptr) {}
explicit TemporaryRef(T* aVal) : mPtr(RefPtr<T>::ref(aVal)) {}
TemporaryRef(const TemporaryRef& aOther) : mPtr(aOther.take()) {}
template<typename U>
TemporaryRef(const TemporaryRef<U>& aOther) : mPtr(aOther.take()) {}
~TemporaryRef() { RefPtr<T>::unref(mPtr); }
MOZ_WARN_UNUSED_RESULT T* take() const
{
T* tmp = mPtr;
mPtr = nullptr;
return tmp;
}
private:
TemporaryRef(T* aVal, const DontRef&) : mPtr(aVal) {}
mutable T* MOZ_OWNING_REF mPtr;
void operator=(const TemporaryRef&) = delete;
};
/**
* OutParamRef is a wrapper that tracks a refcounted pointer passed as
* an outparam argument to a function. OutParamRef implements COM T**
@ -369,7 +317,7 @@ private:
* returns the same T* passed to it through the T** outparam, as long
* as the callee obeys the COM discipline.
*
* Prefer returning TemporaryRef<T> from functions over creating T**
* Prefer returning already_AddRefed<T> from functions over creating T**
* outparams and passing OutParamRef<T> to T**. Prefer RefPtr<T>*
* outparams over T** outparams.
*/