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author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
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committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
tree | 10027f336435511475e392454359edea8e25895d /xpcom/tests/SizeTest02.cpp | |
parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
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Add m-esr52 at 52.6.0
Diffstat (limited to 'xpcom/tests/SizeTest02.cpp')
-rw-r--r-- | xpcom/tests/SizeTest02.cpp | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/xpcom/tests/SizeTest02.cpp b/xpcom/tests/SizeTest02.cpp new file mode 100644 index 000000000..9fcd1a0ca --- /dev/null +++ b/xpcom/tests/SizeTest02.cpp @@ -0,0 +1,89 @@ +// Test02.cpp + +#include "nsIDOMNode.h" +#include "nsCOMPtr.h" +#include "nsString.h" + +NS_DEF_PTR(nsIDOMNode); + + /* + 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; + + nsIDOMNode* node = 0; + nsresult status = aDOMNode->QueryInterface(NS_GET_IID(nsIDOMNode), (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; + + nsIDOMNode* node; + nsresult status = aDOMNode->QueryInterface(NS_GET_IID(nsIDOMNode), (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<nsIDOMNode> node = do_QueryInterface(aDOMNode, &status); + + if ( node ) + node->GetNodeName(*aResult); + +// return status; + } + |