This paper presents a new Win32 API emulation layer called nt2unix. It supports source code compatible Win32 console applications on UNIX. We focus on the emulation of specific Win32 features used for systems programming like exception handling, virtual memory management, Windows NT multithreading / synchronization and the WinSock API for networking. As a case study, we ported the all-software distributed shared memory (DSM) system SVMlib- consisting of about 15.000 lines of C++ code written natively for the Win32 API- to Sun Solaris 2.5 with absolutely no source code changes
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