Bug 729403 (part 1) - Add Vector::sizeOf{In,Ex}cludingThis(). r=luke.

--HG--
extra : rebase_source : 850abf71178c5a23198561560d00ecd970db0cc1

js/public/Vector.h

@@ -499,6 +499,17 @@ class Vector : private AllocPolicy
      * shifting existing elements from |t + 1| onward one position lower.
      */
     void erase(T *t);
+
+    /*
+     * Measure the size of the Vector's heap-allocated storage.
+     */
+    size_t sizeOfExcludingThis(JSMallocSizeOfFun mallocSizeOf) const;
+
+    /* 
+     * Like sizeOfExcludingThis, but also measures the size of the Vector
+     * object (which must be heap-allocated) itself.
+     */
+    size_t sizeOfIncludingThis(JSMallocSizeOfFun mallocSizeOf) const;
 };
 
 /* This does the re-entrancy check plus several other sanity checks. */
@@ -996,6 +1007,20 @@ Vector<T,N,AP>::replaceRawBuffer(T *p, size_t length)
 #endif
 }
 
+template <class T, size_t N, class AP>
+inline size_t
+Vector<T,N,AP>::sizeOfExcludingThis(JSMallocSizeOfFun mallocSizeOf) const
+{
+    return usingInlineStorage() ? 0 : mallocSizeOf(beginNoCheck());
+}
+
+template <class T, size_t N, class AP>
+inline size_t
+Vector<T,N,AP>::sizeOfIncludingThis(JSMallocSizeOfFun mallocSizeOf) const
+{
+    return mallocSizeOf(this) + sizeOfExcludingThis(mallocSizeOf);
+}
+
 }  /* namespace js */
 
 #ifdef _MSC_VER