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/*
* Copyright (C) 2005-2019 Team Kodi
* This file is part of Kodi - https://kodi.tv
*
* SPDX-License-Identifier: GPL-2.0-or-later
* See LICENSES/README.md for more information.
*/
#pragma once
#include "threads/SystemClock.h"
#include <chrono>
#include <thread>
namespace ConditionPoll
{
/**
* This is usually enough time for the condition to have occurred in a test.
*/
constexpr unsigned int defaultTimeout{20000};
/**
* poll until the lambda returns true or the timeout occurs. If the timeout occurs then
* the function will return false. Otherwise it will return true.
*/
template<typename L> inline bool poll(unsigned int timeoutMillis, L lambda)
{
XbmcThreads::EndTime<> endTime{std::chrono::milliseconds(timeoutMillis)};
bool lastValue = false;
while (!endTime.IsTimePast() && (lastValue = lambda()) == false)
std::this_thread::sleep_for(std::chrono::milliseconds(50));
return lastValue;
}
/**
* poll until the lambda returns true or the defaultTimeout occurs. If the timeout occurs then
* the function will return false. Otherwise it will return true.
*/
template<typename L> inline bool poll(L lambda)
{
return poll(defaultTimeout, lambda);
}
}
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