Added RefCountedMallocedMemory

Which takes ownership over a chunk of memory allocated with malloc or calloc
and must then be freed using free().

Review URL: https://codereview.chromium.org/78603002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236675 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 20 insertions, 0 deletions

diff --git a/base/memory/ref_counted_memory.h b/base/memory/ref_counted_memory.h
index fd5e8a0..d2987c5 100644
--- a/base/memory/ref_counted_memory.h
+++ b/base/memory/ref_counted_memory.h
@@ -113,6 +113,26 @@ class BASE_EXPORT RefCountedString : public RefCountedMemory {
   DISALLOW_COPY_AND_ASSIGN(RefCountedString);
 };
 
+// An implementation of RefCountedMemory that holds a chunk of memory
+// previously allocated with malloc or calloc, and that therefore must be freed
+// using free().
+class BASE_EXPORT RefCountedMallocedMemory : public base::RefCountedMemory {
+ public:
+  RefCountedMallocedMemory(void* data, size_t length);
+
+  // Overridden from RefCountedMemory:
+  virtual const unsigned char* front() const OVERRIDE;
+  virtual size_t size() const OVERRIDE;
+
+ private:
+  virtual ~RefCountedMallocedMemory();
+
+  unsigned char* data_;
+  size_t length_;
+
+  DISALLOW_COPY_AND_ASSIGN(RefCountedMallocedMemory);
+};
+
 }  // namespace base
 
 #endif  // BASE_MEMORY_REF_COUNTED_MEMORY_H_