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// Test02.cpp
#include "nsINode.h"
#include "nsCOMPtr.h"
#include "nsString.h"
NS_DEF_PTR(nsINode);
/*
This test file compares the generated code size of similar functions
between raw COM interface pointers (|AddRef|ing and |Release|ing by hand) and
|nsCOMPtr|s.
Function size results were determined by examining dissassembly of the
generated code. mXXX is the size of the generated code on the Macintosh. wXXX
is the size on Windows. For these tests, all reasonable optimizations were
enabled and exceptions were disabled (just as we build for release).
The tests in this file explore more complicated functionality: assigning
a pointer to be reference counted into a [raw, nsCOMPtr] object using
|QueryInterface|; ensuring that it is |AddRef|ed and |Release|d
appropriately; calling through the pointer to a function supplied by the
underlying COM interface. The tests in this file expand on the tests in
"Test01.cpp" by adding |QueryInterface|.
Windows:
raw01
52 nsCOMPtr 63 raw
66 nsCOMPtr* 68
Macintosh:
nsCOMPtr 120 (1.0000) Raw01
128 (1.1429) i.e., 14.29% bigger than nsCOMPtr Raw00
144 (1.2000)
*/
void // nsresult
Test02_Raw00(nsISupports* aDOMNode, nsString* aResult)
// m144, w66
{
// -- the following code is assumed, but is commented out so we compare only
// the relevent generated code
// if ( !aDOMNode )
// return NS_ERROR_NULL_POINTER;
nsINode* node = 0;
nsresult status =
aDOMNode->QueryInterface(NS_GET_IID(nsINode), (void**)&node);
if (NS_SUCCEEDED(status)) {
node->GetNodeName(*aResult);
}
NS_IF_RELEASE(node);
// return status;
}
void // nsresult
Test02_Raw01(nsISupports* aDOMNode, nsString* aResult)
// m128, w52
{
// if ( !aDOMNode )
// return NS_ERROR_NULL_POINTER;
nsINode* node;
nsresult status =
aDOMNode->QueryInterface(NS_GET_IID(nsINode), (void**)&node);
if (NS_SUCCEEDED(status)) {
node->GetNodeName(*aResult);
NS_RELEASE(node);
}
// return status;
}
void // nsresult
Test02_nsCOMPtr(nsISupports* aDOMNode, nsString* aResult)
// m120, w63/68
{
nsresult status;
nsCOMPtr<nsINode> node = do_QueryInterface(aDOMNode, &status);
if (node) node->GetNodeName(*aResult);
// return status;
}