janwas
cccd6849a7
lib_errors.cpp: replace with status.cpp, adapt to needs at work wutil: fix runtime warning reported via feedback box config: merge CONFIG_PARANOIA and !CONFIG_FINAL into CONFIG_ENABLE_CHECKS add openmp, pointer_typedefs.h This was SVN commit r9410.
51 lines
2.3 KiB
C
51 lines
2.3 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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* I/O completion port
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*/
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#ifndef INCLUDED_WIOCP
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#define INCLUDED_WIOCP
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#include "lib/sysdep/os/win/win.h"
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// this appears to be the best solution for IO notification.
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// there are three alternatives:
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// - multiple threads with blocking I/O. this is rather inefficient when
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// many directories (e.g. mods) are being watched.
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// - normal overlapped I/O: build a contiguous array of the hEvents
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// in all OVERLAPPED structures, and WaitForMultipleObjects.
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// it would be cumbersome to update this array when adding/removing watches.
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// - callback notification: a notification function is called when the thread
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// that initiated the I/O (ReadDirectoryChangesW) enters an alertable
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// wait state. it is desirable for notifications to arrive at a single
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// known point - see dir_watch_Poll. however, other APIs might also
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// trigger APC delivery.
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// @param hIOCP 0 to create a new port
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extern void AttachToCompletionPort(HANDLE hFile, HANDLE& hIOCP, ULONG_PTR key, DWORD numConcurrentThreads = 0);
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extern Status PollCompletionPort(HANDLE hIOCP, DWORD timeout, DWORD& bytesTransferred, ULONG_PTR& key, OVERLAPPED*& ovl);
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#endif // #ifndef INCLUDED_WIOCP
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