1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/xpcom/tests/SizeTest02.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,89 @@
1.4 +// Test02.cpp
1.5 +
1.6 +#include "nsIDOMNode.h"
1.7 +#include "nsCOMPtr.h"
1.8 +#include "nsString.h"
1.9 +
1.10 +NS_DEF_PTR(nsIDOMNode);
1.11 +
1.12 + /*
1.13 + This test file compares the generated code size of similar functions between raw
1.14 + COM interface pointers (|AddRef|ing and |Release|ing by hand) and |nsCOMPtr|s.
1.15 +
1.16 + Function size results were determined by examining dissassembly of the generated code.
1.17 + mXXX is the size of the generated code on the Macintosh. wXXX is the size on Windows.
1.18 + For these tests, all reasonable optimizations were enabled and exceptions were
1.19 + disabled (just as we build for release).
1.20 +
1.21 + The tests in this file explore more complicated functionality: assigning a pointer
1.22 + to be reference counted into a [raw, nsCOMPtr] object using |QueryInterface|;
1.23 + ensuring that it is |AddRef|ed and |Release|d appropriately; calling through the pointer
1.24 + to a function supplied by the underlying COM interface. The tests in this file expand
1.25 + on the tests in "Test01.cpp" by adding |QueryInterface|.
1.26 +
1.27 + Windows:
1.28 + raw01 52
1.29 + nsCOMPtr 63
1.30 + raw 66
1.31 + nsCOMPtr* 68
1.32 +
1.33 + Macintosh:
1.34 + nsCOMPtr 120 (1.0000)
1.35 + Raw01 128 (1.1429) i.e., 14.29% bigger than nsCOMPtr
1.36 + Raw00 144 (1.2000)
1.37 + */
1.38 +
1.39 +
1.40 +void // nsresult
1.41 +Test02_Raw00( nsISupports* aDOMNode, nsString* aResult )
1.42 + // m144, w66
1.43 + {
1.44 +// -- the following code is assumed, but is commented out so we compare only
1.45 +// the relevent generated code
1.46 +
1.47 +// if ( !aDOMNode )
1.48 +// return NS_ERROR_NULL_POINTER;
1.49 +
1.50 + nsIDOMNode* node = 0;
1.51 + nsresult status = aDOMNode->QueryInterface(NS_GET_IID(nsIDOMNode), (void**)&node);
1.52 + if ( NS_SUCCEEDED(status) )
1.53 + {
1.54 + node->GetNodeName(*aResult);
1.55 + }
1.56 +
1.57 + NS_IF_RELEASE(node);
1.58 +
1.59 +// return status;
1.60 + }
1.61 +
1.62 +void // nsresult
1.63 +Test02_Raw01( nsISupports* aDOMNode, nsString* aResult )
1.64 + // m128, w52
1.65 + {
1.66 +// if ( !aDOMNode )
1.67 +// return NS_ERROR_NULL_POINTER;
1.68 +
1.69 + nsIDOMNode* node;
1.70 + nsresult status = aDOMNode->QueryInterface(NS_GET_IID(nsIDOMNode), (void**)&node);
1.71 + if ( NS_SUCCEEDED(status) )
1.72 + {
1.73 + node->GetNodeName(*aResult);
1.74 + NS_RELEASE(node);
1.75 + }
1.76 +
1.77 +// return status;
1.78 + }
1.79 +
1.80 +void // nsresult
1.81 +Test02_nsCOMPtr( nsISupports* aDOMNode, nsString* aResult )
1.82 + // m120, w63/68
1.83 + {
1.84 + nsresult status;
1.85 + nsCOMPtr<nsIDOMNode> node = do_QueryInterface(aDOMNode, &status);
1.86 +
1.87 + if ( node )
1.88 + node->GetNodeName(*aResult);
1.89 +
1.90 +// return status;
1.91 + }
1.92 +
