janwas
1861448e6c
also rename wchar -> utf8 to avoid conflict with <wchar.h> (requires rebuild of workspace) (unfortunately copying history fails to "502 bad gateway"; had to delete old + add new independently) This was SVN commit r7340.
96 lines
3.3 KiB
C++
96 lines
3.3 KiB
C++
/* Copyright (c) 2010 Wildfire Games
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* windows-specific module init and shutdown mechanism
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*/
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#include "precompiled.h"
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#include "lib/sysdep/os/win/winit.h"
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#include "lib/sysdep/os/win/win.h" // GetTickCount for quick'n dirty timing
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// see http://blogs.msdn.com/larryosterman/archive/2004/09/27/234840.aspx
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// for discussion of a similar mechanism.
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//
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// note: this module is kept distinct from the CRT's init/shutdown mechanism
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// to insulate against changes there. another advantage is that callbacks
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// can return LibError instead of int.
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// currently (2008-02-17) the init groups are populated as follows:
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// critical : wposix
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// early : wutil
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// early2 : whrt, wdbg_heap
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// main : waio, wsock, wtime, wdir_watch
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// late : wsdl
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typedef LibError (*PfnLibError)();
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// pointers to start and end of function tables.
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// notes:
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// - COFF tosses out empty segments, so we have to put in one value
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// (zero, because CallFunctionPointers has to ignore entries =0 anyway).
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// - ASCII '$' and 'Z' come before resp. after '0'..'9', so use that to
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// bound the section names.
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__declspec(allocate(".WINIT$I$")) PfnLibError initBegin = 0;
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__declspec(allocate(".WINIT$IZ")) PfnLibError initEnd = 0;
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__declspec(allocate(".WINIT$S$")) PfnLibError shutdownBegin = 0;
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__declspec(allocate(".WINIT$SZ")) PfnLibError shutdownEnd = 0;
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// note: #pragma comment(linker, "/include") is not necessary since
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// these are referenced below.
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/**
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* call into a range of function pointers.
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* @param [begin, end): STL-style range
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*
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* note: pointers = 0 are ignored. this is because the above placeholders
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* are initialized to 0 and because the range may be larger than
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* expected due to COFF section padding (with zeroes).
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**/
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static void CallFunctionPointers(PfnLibError* begin, PfnLibError* end)
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{
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const DWORD t0 = GetTickCount();
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for(PfnLibError* ppfunc = begin; ppfunc < end; ppfunc++)
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{
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if(*ppfunc)
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{
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(*ppfunc)();
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}
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}
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const DWORD t1 = GetTickCount();
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debug_printf(L"WINIT| total elapsed time in callbacks %d ms (+-10)\n", t1-t0);
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}
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void winit_CallInitFunctions()
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{
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CallFunctionPointers(&initBegin, &initEnd);
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}
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void winit_CallShutdownFunctions()
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{
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CallFunctionPointers(&shutdownBegin, &shutdownEnd);
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}
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