1// Copyright (c) 2011 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#ifndef NET_BASE_WINSOCK_UTIL_H_ 6#define NET_BASE_WINSOCK_UTIL_H_ 7#pragma once 8 9#include <winsock2.h> 10 11namespace net { 12 13// Assert that the (manual-reset) event object is not signaled. 14void AssertEventNotSignaled(WSAEVENT hEvent); 15 16// If the (manual-reset) event object is signaled, resets it and returns true. 17// Otherwise, does nothing and returns false. Called after a Winsock function 18// succeeds synchronously 19// 20// Our testing shows that except in rare cases (when running inside QEMU), 21// the event object is already signaled at this point, so we call this method 22// to avoid a context switch in common cases. This is just a performance 23// optimization. The code still works if this function simply returns false. 24bool ResetEventIfSignaled(WSAEVENT hEvent); 25 26} // namespace net 27 28#endif // NET_BASE_WINSOCK_UTIL_H_ 29