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#-------------------------------------------------------------------------
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#
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# Makefile for utils
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#
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# $Header: /cvsroot/pgsql/src/utils/Attic/Makefile,v 1.19 2002/11/02 02:00:35 momjian Exp $
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#
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# dllinit.o is only built on Win32 platform.
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#
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#-------------------------------------------------------------------------
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subdir = src/utils
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top_builddir = ../..
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include $(top_builddir)/src/Makefile.global |
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all: |
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clean distclean maintainer-clean: |
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rm -f dllinit.o
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#include <cygwin/version.h> |
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#if CYGWIN_VERSION_DLL_MAJOR < 1001 |
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/* dllinit.c -- Portable DLL initialization.
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Copyright (C) 1998 Free Software Foundation, Inc. |
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Contributed by Mumit Khan (khan@xraylith.wisc.edu). |
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I've used DllMain as the DLL "main" since that's the most common |
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usage. MSVC and Mingw32 both default to DllMain as the standard |
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callback from the linker entry point. Cygwin32 b19+ uses essentially |
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the same, albeit slightly differently implemented, scheme. Please |
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see DECLARE_CYGWIN_DLL macro in <cygwin32/cygwin_dll.h> for more |
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info on how Cygwin32 uses the callback function. |
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The real entry point is typically always defined by the runtime |
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library, and usually never overridden by (casual) user. What you can |
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override however is the callback routine that the entry point calls, |
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and this file provides such a callback function, DllMain. |
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Mingw32: The default entry point for mingw32 is DllMainCRTStartup |
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which is defined in libmingw32.a This in turn calls DllMain which is |
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defined here. If not defined, there is a stub in libmingw32.a which |
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does nothing. |
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Cygwin32: The default entry point for cygwin32 b19 or newer is |
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__cygwin32_dll_entry which is defined in libcygwin.a. This in turn |
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calls the routine you supply to the DECLARE_CYGWIN_DLL (see below) |
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and, for this example, I've chose DllMain to be consistent with all |
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the other platforms. |
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MSVC: MSVC runtime calls DllMain, just like Mingw32. |
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Summary: If you need to do anything special in DllMain, just add it |
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here. Otherwise, the default setup should be just fine for 99%+ of |
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the time. I strongly suggest that you *not* change the entry point, |
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but rather change DllMain as appropriate. |
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*/ |
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#define WIN32_LEAN_AND_MEAN |
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#include <windows.h> |
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#undef WIN32_LEAN_AND_MEAN |
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#include <stdio.h> |
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BOOL APIENTRY DllMain(HINSTANCE hInst, DWORD reason, |
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LPVOID reserved /* Not used. */ ); |
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#ifdef __CYGWIN__ |
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#include <cygwin/cygwin_dll.h> |
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DECLARE_CYGWIN_DLL(DllMain); |
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/* save hInstance from DllMain */ |
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HINSTANCE __hDllInstance_base; |
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#endif /* __CYGWIN__ */ |
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struct _reent *_impure_ptr; |
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extern struct _reent *__imp_reent_data; |
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/*
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*---------------------------------------------------------------------- |
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* |
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* DllMain |
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* |
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* This routine is called by the Mingw32, Cygwin32 or VC++ C run |
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* time library init code, or the Borland DllEntryPoint routine. It |
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* is responsible for initializing various dynamically loaded |
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* libraries. |
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* |
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* Results: |
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* TRUE on sucess, FALSE on failure. |
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* |
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* Side effects: |
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* |
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*---------------------------------------------------------------------- |
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*/ |
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BOOL APIENTRY |
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DllMain( |
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HINSTANCE hInst /* Library instance handle. */ , |
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DWORD reason /* Reason this function is being called. */ , |
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LPVOID reserved /* Not used. */ ) |
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{ |
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#ifdef __CYGWIN__ |
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__hDllInstance_base = hInst; |
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#endif /* __CYGWIN__ */ |
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_impure_ptr = __imp_reent_data; |
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switch (reason) |
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{ |
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case DLL_PROCESS_ATTACH: |
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break; |
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case DLL_PROCESS_DETACH: |
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break; |
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case DLL_THREAD_ATTACH: |
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break; |
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case DLL_THREAD_DETACH: |
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break; |
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} |
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return TRUE; |
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} |
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#endif /* CYGWIN_VERSION_DLL_MAJOR < 1001 */ |
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