зеркало из https://github.com/mozilla/gecko-dev.git
113 строки
2.8 KiB
C++
113 строки
2.8 KiB
C++
// Test02.cpp
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#include "nsIDOMNode.h"
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#include "nsCOMPtr.h"
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#include "nsIPtr.h"
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#ifdef __MWERKS__
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#pragma exceptions off
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#endif
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NS_DEF_PTR(nsIDOMNode);
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/*
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This test file compares the generated code size of similar functions between raw
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COM interface pointers (|AddRef|ing and |Release|ing by hand), |nsCOMPtr|s, and
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the smart-pointer macro defined in "nsIPtr.h".
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Function size results were determined by examining dissassembly of the generated code.
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mXXX is the size of the generated code on the Macintosh. wXXX is the size on Windows.
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For these tests, all reasonable optimizations were enabled and exceptions were
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disabled (just as we build for release).
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The tests in this file explore more complicated functionality: assigning a pointer
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to be reference counted into a [raw, nsCOMPtr, nsIPtr] object using |QueryInterface|;
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ensuring that it is |AddRef|ed and |Release|d appropriately; calling through the pointer
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to a function supplied by the underlying COM interface. The tests in this file expand
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on the tests in "Test01.cpp" by adding |QueryInterface|.
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Windows:
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raw01 52
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nsCOMPtr 63
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raw 66
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nsCOMPtr* 68
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nsIPtr 66 + 196
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Macintosh:
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nsCOMPtr 120 (1.0000)
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Raw01 128 (1.1429) i.e., 14.29% bigger than nsCOMPtr
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Raw00 144 (1.2000)
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nsIPtr 196 (1.6333)
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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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nsIDOMNode* node = 0;
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nsresult status = aDOMNode->QueryInterface(NS_GET_IID(nsIDOMNode), (void**)&node);
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if ( NS_SUCCEEDED(status) )
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{
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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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nsIDOMNode* node;
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nsresult status = aDOMNode->QueryInterface(NS_GET_IID(nsIDOMNode(, (void**)&node);
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if ( NS_SUCCEEDED(status) )
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{
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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<nsIDOMNode> node = do_QueryInterface(aDOMNode, &status);
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if ( node )
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node->GetNodeName(*aResult);
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// return status;
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}
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void // nsresult
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Test02_nsIPtr( nsISupports* aDOMNode, nsString* aResult )
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// m196, w66
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{
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// if ( !aDOMNode )
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// return NS_ERROR_NULL_POINTER;
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nsIDOMNodePtr node;
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nsresult status = aDOMNode->QueryInterface(NS_GET_IID(nsIDOMNode), node.Query());
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if ( NS_SUCCEEDED(status) )
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node->GetNodeName(*aResult);
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// return status;
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}
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