#ifndef LLVM_ADT_INTRUSIVE_REF_CNT_PTR
#define LLVM_ADT_INTRUSIVE_REF_CNT_PTR
-#include <cassert>
-
#include "llvm/Support/Casting.h"
+#include "llvm/Support/Compiler.h"
+#include <memory>
namespace llvm {
/// RefCountedBase - A generic base class for objects that wish to
/// have their lifetimes managed using reference counts. Classes
/// subclass RefCountedBase to obtain such functionality, and are
-/// typically handled with IntrusivePtr "smart pointers" (see below)
+/// typically handled with IntrusiveRefCntPtr "smart pointers" (see below)
/// which automatically handle the management of reference counts.
/// Objects that subclass RefCountedBase should not be allocated on
/// the stack, as invoking "delete" (which is called when the
}
template <typename T>
- friend class IntrusiveRefCntPtr;
+ friend struct IntrusiveRefCntPtrInfo;
};
explicit IntrusiveRefCntPtr() : Obj(0) {}
- explicit IntrusiveRefCntPtr(T* obj) : Obj(obj) {
+ IntrusiveRefCntPtr(T* obj) : Obj(obj) {
retain();
}
retain();
}
- template <class X>
- IntrusiveRefCntPtr(const IntrusiveRefCntPtr<X>& S)
- : Obj(S.getPtr()) {
- retain();
+#if LLVM_USE_RVALUE_REFERENCES
+ IntrusiveRefCntPtr(IntrusiveRefCntPtr&& S) : Obj(S.Obj) {
+ S.Obj = 0;
}
- IntrusiveRefCntPtr& operator=(const IntrusiveRefCntPtr& S) {
- replace(S.getPtr());
- return *this;
+ template <class X>
+ IntrusiveRefCntPtr(IntrusiveRefCntPtr<X>&& S) : Obj(S.getPtr()) {
+ S.Obj = 0;
}
+#endif
template <class X>
- IntrusiveRefCntPtr& operator=(const IntrusiveRefCntPtr<X>& S) {
- replace(S.getPtr());
- return *this;
+ IntrusiveRefCntPtr(const IntrusiveRefCntPtr<X>& S)
+ : Obj(S.getPtr()) {
+ retain();
}
- IntrusiveRefCntPtr& operator=(T * S) {
- replace(S);
+ IntrusiveRefCntPtr& operator=(IntrusiveRefCntPtr S) {
+ swap(S);
return *this;
}
private:
void retain() { if (Obj) IntrusiveRefCntPtrInfo<T>::retain(Obj); }
void release() { if (Obj) IntrusiveRefCntPtrInfo<T>::release(Obj); }
-
- void replace(T* S) {
- this_type(S).swap(*this);
- }
};
template<class T, class U>