Made tensor copies a little more efficient.

davisking · davisking · commit ccdb77212a81 · 2016-10-10T18:26:09.000-04:00
diff --git a/dlib/dnn/tensor.h b/dlib/dnn/tensor.h
@@ -292,15 +292,13 @@ namespace dlib
 
         resizable_tensor(const resizable_tensor& item) : _annotation(item.annotation()) 
         {
-            // TODO, do the copy with cuda?
             copy_size(item);
-            std::memcpy(data_instance.host(), item.host(), data_instance.size()*sizeof(float));
+            memcpy(data_instance, item.data_instance);
         }
         resizable_tensor(const tensor& item) : _annotation(item.annotation()) 
         {
-            // TODO, do the copy with cuda?
             copy_size(item);
-            std::memcpy(data_instance.host(), item.host(), data_instance.size()*sizeof(float));
+            memcpy(*this, item);
         }
 
         resizable_tensor(resizable_tensor&& item) { swap(item); }

Original file line number	Diff line number	Diff line change
`@@ -292,15 +292,13 @@ namespace dlib`
`292`	`292`
`293`	`293`	`resizable_tensor(const resizable_tensor& item) : _annotation(item.annotation())`
`294`	`294`	`{`
`295`		`- // TODO, do the copy with cuda?`
`296`	`295`	`copy_size(item);`
`297`		`- std::memcpy(data_instance.host(), item.host(), data_instance.size()*sizeof(float));`
	`296`	`+ memcpy(data_instance, item.data_instance);`
`298`	`297`	`}`
`299`	`298`	`resizable_tensor(const tensor& item) : _annotation(item.annotation())`
`300`	`299`	`{`
`301`		`- // TODO, do the copy with cuda?`
`302`	`300`	`copy_size(item);`
`303`		`- std::memcpy(data_instance.host(), item.host(), data_instance.size()*sizeof(float));`
	`301`	`+ memcpy(*this, item);`
`304`	`302`	`}`
`305`	`303`
`306`	`304`	`resizable_tensor(resizable_tensor&& item) { swap(item); }`