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POProfiling a dynamic pinvoke
 

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    <p>I am working on MSIL profiler and encountered problems with <code>ManagedToUnmanagedTransition</code> and <code>UnmanagedToManagedTransition</code> callbacks of <code>ICorProfilerCallback</code> interface.</p> <p>What I want to retrieve is an information about method being called (name and module name it resides in).</p> <p>So far it was working fine. Until so called dynamic pinvoke occured (described in detail at: <a href="http://blogs.msdn.com/b/jonathanswift/archive/2006/10/03/dynamically-calling-an-unmanaged-dll-from-.net-_2800_c_23002900_.aspx" rel="noreferrer">http://blogs.msdn.com/b/jonathanswift/archive/2006/10/03/dynamically-calling-an-unmanaged-dll-from-.net-_2800_c_23002900_.aspx</a>)</p> <p>In this scenario <code>IMetaDataImport::GetPinvokeMap</code> fails. Also <code>IMetaDataAssemblyImport::GetAssemblyProps</code> returns "dynamic_pinvoke" as a name of the assembly.</p> <pre><code>profiler_1_0-&gt;GetTokenAndMetaDataFromFunction(function_id, IID_IMetaDataImport, (IUnknown**) &amp;imd_import, &amp;md_token); imd_import-&gt;GetPinvokeMap(md_token, &amp;mapping, module_name, buffer_size, &amp;chars_read, &amp;md_module_ref); // here the fail occurs profiler_1_0-&gt;GetTokenAndMetaDataFromFunction(function_id, IID_IMetaDataAssemblyImport, (IUnknown**) &amp;imd_assembly_import, &amp;md_token); imd_assembly_import-&gt;GetAssemblyFromScope(&amp;md_assembly); imd_assembly_import-&gt;GetAssemblyProps(md_assembly, 0, 0, 0, assembly_name, buffer_size, &amp;chars_read, 0, 0); // assembly_name is set to "dynamic_pinvoke" </code></pre> <p>How to obtain a module name (.dll) and a name of function being pinvoked through dynamic pinvoke?</p>
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    1. COVery good question!!! Did you try (when you get "dynamic_pinvoke") to skip GetPinvokeMap and to switch to StackWalk64 family functions? (http://msdn.microsoft.com/en-us/library/windows/desktop/ms680650(v=vs.85).aspx)
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    2. CODocument the HRESULT return values, on *all* of these calls.
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    3. CO@HansPassant: all calls returns S_OK but GetPinvokeMap which ends up with 0x80131130 (CLDB_E_RECORD_NOTFOUND).
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