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/*
* Copyright (C) 2021 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <android-base/macros.h>
#include <functional>
namespace android::nlinterceptor {
/**
* Handy-dandy helper to get the size of a statically initialized array.
*
* \param N the array to get the size of.
* \return the size of the array.
*/
template <typename T, size_t N>
size_t countof(T (&)[N]) {
return N;
}
/**
* Helper to check if socket is readable (POLLIN is set).
*
* \param revents pollfd.revents value to check.
* \return true if socket is ready to read.
*/
bool isSocketReadable(short revents);
/**
* Helper to check if socket is bad (POLLERR, POLLHUP or POLLNVAL is set).
*
* \param revents pollfd.revents value to check.
* \return true if socket is bad.
*/
bool isSocketBad(short revents);
} // namespace android::nlinterceptor
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