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85 lines
2.2 KiB
C
85 lines
2.2 KiB
C
/*-------------------------------------------------------------------------
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*
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* mingwcompat.c
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* MinGW compatibility functions
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*
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* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/port/win32/mingwcompat.c,v 1.9 2010/02/09 19:55:14 mha Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#include "postgres.h"
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#ifndef WIN32_ONLY_COMPILER
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/*
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* MingW defines an extern to this struct, but the actual struct isn't present
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* in any library. It's trivial enough that we can safely defined it
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* ourselves.
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*/
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const struct in6_addr in6addr_any = {{{0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0}}};
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/*
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* This file contains loaders for functions that are missing in the MinGW
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* import libraries. It's only for actual Win32 API functions, so they are
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* all present in proper Win32 compilers.
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*/
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static HMODULE kernel32 = NULL;
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/*
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* Load DLL file just once regardless of how many functions
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* we load/call in it.
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*/
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static void
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LoadKernel32()
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{
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if (kernel32 != NULL)
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return;
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kernel32 = LoadLibraryEx("kernel32.dll", NULL, 0);
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if (kernel32 == NULL)
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ereport(FATAL,
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(errmsg_internal("could not load kernel32.dll: %d",
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(int) GetLastError())));
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}
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/*
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* Replacement for RegisterWaitForSingleObject(), which lives in
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* kernel32.dll
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*/
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typedef
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BOOL (WINAPI * __RegisterWaitForSingleObject)
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(PHANDLE, HANDLE, WAITORTIMERCALLBACK, PVOID, ULONG, ULONG);
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static __RegisterWaitForSingleObject _RegisterWaitForSingleObject = NULL;
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BOOL WINAPI
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RegisterWaitForSingleObject(PHANDLE phNewWaitObject,
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HANDLE hObject,
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WAITORTIMERCALLBACK Callback,
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PVOID Context,
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ULONG dwMilliseconds,
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ULONG dwFlags)
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{
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if (_RegisterWaitForSingleObject == NULL)
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{
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LoadKernel32();
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_RegisterWaitForSingleObject = (__RegisterWaitForSingleObject)
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GetProcAddress(kernel32, "RegisterWaitForSingleObject");
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if (_RegisterWaitForSingleObject == NULL)
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ereport(FATAL,
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(errmsg_internal("could not locate RegisterWaitForSingleObject in kernel32.dll: %d",
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(int) GetLastError())));
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}
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return (_RegisterWaitForSingleObject)
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(phNewWaitObject, hObject, Callback, Context, dwMilliseconds, dwFlags);
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}
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#endif
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