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synced 2026-07-04 05:55:47 -07:00
4663ac0fe7
the old debug_assert always ran and tested the expression, which slows down release builds. wrapping them in #ifndef NDEBUG is clumsy. the new ASSERT behaves like assert and ENSURE like the old debug_assert. Let's change any time-critical but not-super-important ENSURE to ASSERT to speed up release builds. (already done in bits.h and unique_range.h) This was SVN commit r9362.
32 lines
1,021 B
C++
32 lines
1,021 B
C++
#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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LibError 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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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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if(GetLastError() == WAIT_TIMEOUT)
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return ERR::AGAIN; // NOWARN (nothing pending)
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else
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return ERR::FAIL; // NOWARN (let caller decide what to do)
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}
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