/usr/include/uhd/utils/tasks.hpp is in libuhd-dev 3.10.3.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Copyright 2011-2012 Ettus Research LLC
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
#ifndef INCLUDED_UHD_UTILS_TASKS_HPP
#define INCLUDED_UHD_UTILS_TASKS_HPP
#include <uhd/config.hpp>
#include <boost/shared_ptr.hpp>
#include <boost/function.hpp>
#include <boost/utility.hpp>
namespace uhd{
class UHD_API task : boost::noncopyable{
public:
typedef boost::shared_ptr<task> sptr;
typedef boost::function<void(void)> task_fcn_type;
/*!
* Create a new task object with function callback.
* The task function callback will be run in a loop.
* until the thread is interrupted by the deconstructor.
*
* A task should return in a reasonable amount of time
* or may block forever under the following conditions:
* - The blocking call is interruptible.
* - The task polls the interrupt condition.
*
* \param task_fcn the task callback function
* \return a new task object
*/
static sptr make(const task_fcn_type &task_fcn);
};
} //namespace uhd
#endif /* INCLUDED_UHD_UTILS_TASKS_HPP */
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