Templatize GrNonAtomicRef

src/gpu/GrNonAtomicRef.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrNonAtomicRef_DEFINED
 #define GrNonAtomicRef_DEFINED
 
 #include "SkRefCnt.h"
 #include "SkTArray.h"
 
 /**
  * A simple non-atomic ref used in the GrBackend when we don't want to pay for the overhead of a
  * threadsafe ref counted object
  */
-class GrNonAtomicRef : public SkNoncopyable {
+template<typename TSubclass> class GrNonAtomicRef : public SkNoncopyable {
 public:
     GrNonAtomicRef() : fRefCnt(1) {}
-    virtual ~GrNonAtomicRef() {
+
+#ifdef SK_DEBUG
+    ~GrNonAtomicRef() {
         // fRefCnt can be one when a subclass is created statically
         SkASSERT((0 == fRefCnt || 1 == fRefCnt));
         // Set to invalid values.
-        SkDEBUGCODE(fRefCnt = -10;)
+        fRefCnt = -10;
     }
+#endif
 
     void ref() const {
         // Once the ref cnt reaches zero it should never be ref'ed again.
         SkASSERT(fRefCnt > 0);
         ++fRefCnt;
     }
 
     void unref() const {
         SkASSERT(fRefCnt > 0);
         --fRefCnt;
         if (0 == fRefCnt) {
-            delete this;
+            GrTDeleteNonAtomicRef(static_cast<const TSubclass*>(this));
             return;
         }
     }
 
 private:
     mutable int32_t fRefCnt;
 
     typedef SkNoncopyable INHERITED;
 };
 
+template<typename T> inline void GrTDeleteNonAtomicRef(const T* ref) {
+    delete ref;
+}
+
 #endif