forked from mirrors/gecko-dev
6f45c666bc
# ignore-this-changeset Differential Revision: https://phabricator.services.mozilla.com/D14595 --HG-- extra : moz-landing-system : lando
87 lines
2.3 KiB
C++
87 lines
2.3 KiB
C++
// Test02.cpp
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#include "nsINode.h"
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#include "nsCOMPtr.h"
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#include "nsString.h"
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NS_DEF_PTR(nsINode);
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/*
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This test file compares the generated code size of similar functions
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between raw COM interface pointers (|AddRef|ing and |Release|ing by hand) and
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|nsCOMPtr|s.
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Function size results were determined by examining dissassembly of the
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generated code. mXXX is the size of the generated code on the Macintosh. wXXX
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is the size on Windows. For these tests, all reasonable optimizations were
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enabled and exceptions were disabled (just as we build for release).
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The tests in this file explore more complicated functionality: assigning
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a pointer to be reference counted into a [raw, nsCOMPtr] object using
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|QueryInterface|; ensuring that it is |AddRef|ed and |Release|d
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appropriately; calling through the pointer to a function supplied by the
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underlying COM interface. The tests in this file expand on the tests in
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"Test01.cpp" by adding |QueryInterface|.
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Windows:
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raw01
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52 nsCOMPtr 63 raw
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66 nsCOMPtr* 68
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Macintosh:
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nsCOMPtr 120 (1.0000) Raw01
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128 (1.1429) i.e., 14.29% bigger than nsCOMPtr Raw00
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144 (1.2000)
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*/
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void // nsresult
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Test02_Raw00(nsISupports* aDOMNode, nsString* aResult)
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// m144, w66
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{
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// -- the following code is assumed, but is commented out so we compare only
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// the relevent generated code
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// if ( !aDOMNode )
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// return NS_ERROR_NULL_POINTER;
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nsINode* node = 0;
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nsresult status =
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aDOMNode->QueryInterface(NS_GET_IID(nsINode), (void**)&node);
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if (NS_SUCCEEDED(status)) {
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node->GetNodeName(*aResult);
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}
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NS_IF_RELEASE(node);
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// return status;
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}
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void // nsresult
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Test02_Raw01(nsISupports* aDOMNode, nsString* aResult)
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// m128, w52
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{
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// if ( !aDOMNode )
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// return NS_ERROR_NULL_POINTER;
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nsINode* node;
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nsresult status =
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aDOMNode->QueryInterface(NS_GET_IID(nsINode), (void**)&node);
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if (NS_SUCCEEDED(status)) {
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node->GetNodeName(*aResult);
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NS_RELEASE(node);
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}
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// return status;
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}
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void // nsresult
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Test02_nsCOMPtr(nsISupports* aDOMNode, nsString* aResult)
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// m120, w63/68
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{
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nsresult status;
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nsCOMPtr<nsINode> node = do_QueryInterface(aDOMNode, &status);
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if (node) node->GetNodeName(*aResult);
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// return status;
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}
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