commit 291cd8fac37a2efa026713d198d653bc083881db
author Danil Chapovalov <danilchap@webrtc.org> Fri Sep 09 15:32:33 2016
committer Danil Chapovalov <danilchap@webrtc.org> Fri Sep 09 15:32:43 2016
tree f82b4cf3e9921fd9fbfcccd9ba1ad7efcc2dabb5
parent 96f2c4df316769806d11e25cfbf698a5cf501584

CopyOnWriteBuffer::SetSize to smaller size memcpy less.

R=kwiberg@webrtc.org

Review URL: https://codereview.webrtc.org/2317283004 .

Cr-Commit-Position: refs/heads/master@{#14166}

webrtc/base/copyonwritebuffer.h

diff --git a/webrtc/base/copyonwritebuffer.h b/webrtc/base/copyonwritebuffer.h
index 72fb4ee..108aaa1 100644
--- a/webrtc/base/copyonwritebuffer.h
+++ b/webrtc/base/copyonwritebuffer.h
@@ -222,7 +222,13 @@
       return;
     }
 
-    CloneDataIfReferenced(std::max(buffer_->capacity(), size));
+    // Clone data if referenced.
+    if (!buffer_->HasOneRef()) {
+      buffer_ = new RefCountedObject<Buffer>(
+          buffer_->data(),
+          std::min(buffer_->size(), size),
+          std::max(buffer_->capacity(), size));
+    }
     buffer_->SetSize(size);
     RTC_DCHECK(IsConsistent());
   }