mirror of
https://gitea.wildfiregames.com/0ad/0ad
synced 2026-06-17 05:44:08 -07:00
43137fef3f
Differential Revision: https://code.wildfiregames.com/D716
Refs 09e974e1cb
Reviewed By: bb
Change in agreement with leper.
This was SVN commit r19899.
56 lines
2.1 KiB
C++
56 lines
2.1 KiB
C++
/* Copyright (C) 2015 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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#include "precompiled.h"
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#include "lib/sysdep/os/win/wiocp.h"
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#include "lib/file/file.h" // ERR::IO
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#include "lib/sysdep/os/win/wutil.h"
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void AttachToCompletionPort(HANDLE hFile, HANDLE& hIOCP, ULONG_PTR key, DWORD numConcurrentThreads)
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{
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WinScopedPreserveLastError s; // CreateIoCompletionPort
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// (when called for the first time, ends up creating hIOCP)
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hIOCP = CreateIoCompletionPort(hFile, hIOCP, key, numConcurrentThreads);
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ENSURE(wutil_IsValidHandle(hIOCP));
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}
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Status PollCompletionPort(HANDLE hIOCP, DWORD timeout, DWORD& bytesTransferred, ULONG_PTR& key, OVERLAPPED*& ovl)
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{
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if(hIOCP == 0)
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return ERR::INVALID_HANDLE; // NOWARN (happens if called before the first Attach)
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WinScopedPreserveLastError s;
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bytesTransferred = 0;
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key = 0;
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ovl = 0;
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if(GetQueuedCompletionStatus(hIOCP, &bytesTransferred, &key, &ovl, timeout))
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return INFO::OK;
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const Status ret = StatusFromWin();
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if(ret == ERR::AGAIN || ret == ERR::ABORTED) // avoid polluting last error
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SetLastError(0);
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return ret; // NOWARN (let caller decide what to do)
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}
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