Add basic support for intrinsics. Move sp<> into RScpp.
Change-Id: I74cdee7069a624ded5091d53db3a4b8ce9894033
diff --git a/cpp/util/StrongPointer.h b/cpp/util/StrongPointer.h
new file mode 100644
index 0000000..0f68615
--- /dev/null
+++ b/cpp/util/StrongPointer.h
@@ -0,0 +1,222 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef RS_STRONG_POINTER_H
+#define RS_STRONG_POINTER_H
+
+//#include <cutils/atomic.h>
+
+#include <stdint.h>
+#include <sys/types.h>
+#include <stdlib.h>
+
+// ---------------------------------------------------------------------------
+namespace android {
+namespace RSC {
+
+class TextOutput;
+TextOutput& printStrongPointer(TextOutput& to, const void* val);
+
+template<typename T> class wp;
+
+// ---------------------------------------------------------------------------
+
+#define COMPARE(_op_) \
+inline bool operator _op_ (const sp<T>& o) const { \
+ return m_ptr _op_ o.m_ptr; \
+} \
+inline bool operator _op_ (const T* o) const { \
+ return m_ptr _op_ o; \
+} \
+template<typename U> \
+inline bool operator _op_ (const sp<U>& o) const { \
+ return m_ptr _op_ o.m_ptr; \
+} \
+template<typename U> \
+inline bool operator _op_ (const U* o) const { \
+ return m_ptr _op_ o; \
+} \
+inline bool operator _op_ (const wp<T>& o) const { \
+ return m_ptr _op_ o.m_ptr; \
+} \
+template<typename U> \
+inline bool operator _op_ (const wp<U>& o) const { \
+ return m_ptr _op_ o.m_ptr; \
+}
+
+// ---------------------------------------------------------------------------
+
+template <typename T>
+class sp
+{
+public:
+ inline sp() : m_ptr(0) { }
+
+ sp(T* other);
+ sp(const sp<T>& other);
+ template<typename U> sp(U* other);
+ template<typename U> sp(const sp<U>& other);
+
+ ~sp();
+
+ // Assignment
+
+ sp& operator = (T* other);
+ sp& operator = (const sp<T>& other);
+
+ template<typename U> sp& operator = (const sp<U>& other);
+ template<typename U> sp& operator = (U* other);
+
+ //! Special optimization for use by ProcessState (and nobody else).
+ void force_set(T* other);
+
+ // Reset
+
+ void clear();
+
+ // Accessors
+
+ inline T& operator* () const { return *m_ptr; }
+ inline T* operator-> () const { return m_ptr; }
+ inline T* get() const { return m_ptr; }
+
+ // Operators
+
+ COMPARE(==)
+ COMPARE(!=)
+ COMPARE(>)
+ COMPARE(<)
+ COMPARE(<=)
+ COMPARE(>=)
+
+private:
+ template<typename Y> friend class sp;
+ template<typename Y> friend class wp;
+ void set_pointer(T* ptr);
+ T* m_ptr;
+};
+
+#undef COMPARE
+
+template <typename T>
+TextOutput& operator<<(TextOutput& to, const sp<T>& val);
+
+// ---------------------------------------------------------------------------
+// No user serviceable parts below here.
+
+template<typename T>
+sp<T>::sp(T* other)
+: m_ptr(other)
+ {
+ if (other) other->incStrong(this);
+ }
+
+template<typename T>
+sp<T>::sp(const sp<T>& other)
+: m_ptr(other.m_ptr)
+ {
+ if (m_ptr) m_ptr->incStrong(this);
+ }
+
+template<typename T> template<typename U>
+sp<T>::sp(U* other) : m_ptr(other)
+{
+ if (other) ((T*)other)->incStrong(this);
+}
+
+template<typename T> template<typename U>
+sp<T>::sp(const sp<U>& other)
+: m_ptr(other.m_ptr)
+ {
+ if (m_ptr) m_ptr->incStrong(this);
+ }
+
+template<typename T>
+sp<T>::~sp()
+{
+ if (m_ptr) m_ptr->decStrong(this);
+}
+
+template<typename T>
+sp<T>& sp<T>::operator = (const sp<T>& other) {
+ T* otherPtr(other.m_ptr);
+ if (otherPtr) otherPtr->incStrong(this);
+ if (m_ptr) m_ptr->decStrong(this);
+ m_ptr = otherPtr;
+ return *this;
+}
+
+template<typename T>
+sp<T>& sp<T>::operator = (T* other)
+{
+ if (other) other->incStrong(this);
+ if (m_ptr) m_ptr->decStrong(this);
+ m_ptr = other;
+ return *this;
+}
+
+template<typename T> template<typename U>
+sp<T>& sp<T>::operator = (const sp<U>& other)
+{
+ T* otherPtr(other.m_ptr);
+ if (otherPtr) otherPtr->incStrong(this);
+ if (m_ptr) m_ptr->decStrong(this);
+ m_ptr = otherPtr;
+ return *this;
+}
+
+template<typename T> template<typename U>
+sp<T>& sp<T>::operator = (U* other)
+{
+ if (other) ((T*)other)->incStrong(this);
+ if (m_ptr) m_ptr->decStrong(this);
+ m_ptr = other;
+ return *this;
+}
+
+template<typename T>
+void sp<T>::force_set(T* other)
+{
+ other->forceIncStrong(this);
+ m_ptr = other;
+}
+
+template<typename T>
+void sp<T>::clear()
+{
+ if (m_ptr) {
+ m_ptr->decStrong(this);
+ m_ptr = 0;
+ }
+}
+
+template<typename T>
+void sp<T>::set_pointer(T* ptr) {
+ m_ptr = ptr;
+}
+
+template <typename T>
+inline TextOutput& operator<<(TextOutput& to, const sp<T>& val)
+{
+ return printStrongPointer(to, val.get());
+}
+
+}; // namespace RSC
+}; // namespace android
+
+// ---------------------------------------------------------------------------
+
+#endif // RS_STRONG_POINTER_H