November 2007
Intermediate to advanced
848 pages
27h 15m
English
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Function Forwarders
A function forwarder is an entry in a DLL’s export section that redirects a function call to another function in another DLL. For example, if you run the Visual C++ DumpBin utility on the Windows Vista Kernel32.dll, you’ll see a part of the output that looks like this:
C:\Windows\System32>DumpBin -Exports Kernel32.dll (some output omitted) 75 49 CloseThreadpoolIo (forwarded to NTDLL.TpReleaseIoCompletion) 76 4A CloseThreadpoolTimer (forwarded to NTDLL.TpReleaseTimer) 77 4B CloseThreadpoolWait (forwarded to NTDLL.TpReleaseWait) 78 4C CloseThreadpoolWork (forwarded to NTDLL.TpReleaseWork) (remainder of output omitted)
This output shows four forwarded functions. Whenever your application calls CloseThreadpoolIo, CloseThreadpoolTimer ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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