61 lines
1.5 KiB
C++
61 lines
1.5 KiB
C++
|
/*
|
||
|
|
* 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.
|
||
|
|
*
|
||
|
|
* Copyright 2018 Danny Robson <danny@nerdcruft.net>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef CRUFT_UTIL_JOB_MONITOR_HPP
|
||
|
|
#define CRUFT_UTIL_JOB_MONITOR_HPP
|
||
|
|
|
||
|
|
#include <mutex>
|
||
|
|
#include <utility>
|
||
|
|
#include <functional>
|
||
|
|
|
||
|
|
|
||
|
|
namespace util::job {
|
||
|
|
template <typename ValueT, typename MutexT = std::mutex>
|
||
|
|
class monitor {
|
||
|
|
public:
|
||
|
|
template <typename ...Args>
|
||
|
|
monitor (Args &&...args):
|
||
|
|
m_value (std::forward<Args> (args)...)
|
||
|
|
{ ; }
|
||
|
|
|
||
|
|
class proxy {
|
||
|
|
public:
|
||
|
|
proxy (MutexT &_mutex, ValueT &_value):
|
||
|
|
m_guard (_mutex),
|
||
|
|
m_value (_value)
|
||
|
|
{ ; }
|
||
|
|
|
||
|
|
ValueT* operator-> ()
|
||
|
|
{
|
||
|
|
return &m_value;
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
std::lock_guard<MutexT> m_guard;
|
||
|
|
ValueT &m_value;
|
||
|
|
};
|
||
|
|
|
||
|
|
auto acquire (void) { return proxy (m_mutex, m_value); }
|
||
|
|
auto operator-> () { return acquire (); }
|
||
|
|
|
||
|
|
private:
|
||
|
|
MutexT m_mutex;
|
||
|
|
ValueT m_value;
|
||
|
|
};
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif
|