Import Geant4 10.7.0.beta source tree

2020-06-26 10:23:25 +02:00
parent c02c370437
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+//
+// MIT License
+// Copyright (c) 2020 Jonathan R. Madsen
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED
+// "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
+// LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+// Tasking class header file
+//
+// Class Description:
+//
+// This file creates an abstract base class for the thread-pool tasking
+// system
+//
+// ---------------------------------------------------------------
+// Author: Jonathan Madsen (Feb 13th 2018)
+// ---------------------------------------------------------------
+
+#pragma once
+
+#include "PTL/AutoLock.hh"
+#include "PTL/TaskAllocator.hh"
+#include "PTL/Threading.hh"
+
+#include <atomic>
+#include <cstddef>
+#include <cstdint>
+#include <functional>
+#include <future>
+#include <string>
+#include <thread>
+#include <tuple>
+#include <utility>
+
+namespace PTL
+{
+class VTaskGroup;
+class ThreadPool;
+
+//======================================================================================//
+
+/// \brief VTask is the abstract class stored in thread_pool
+class VTask
+{
+public:
+    typedef std::thread::id       tid_type;
+    typedef size_t                size_type;
+    typedef VTask                 this_type;
+    typedef std::atomic_uintmax_t count_t;
+    typedef VTask*                iterator;
+    typedef const VTask*          const_iterator;
+    typedef std::function<void()> void_func_t;
+
+public:
+    VTask();
+    explicit VTask(VTaskGroup* task_group);
+    explicit VTask(ThreadPool* pool);
+    virtual ~VTask();
+
+public:
+    // execution operator
+    virtual void operator()() = 0;
+
+public:
+    // used by thread_pool
+    void                operator--();
+    virtual bool        is_native_task() const;
+    virtual ThreadPool* pool() const;
+    VTaskGroup*         group() const { return m_group; }
+
+public:
+    // used by task tree
+    iterator begin() { return this; }
+    iterator end() { return this + 1; }
+
+    const_iterator begin() const { return this; }
+    const_iterator end() const { return this + 1; }
+
+    const_iterator cbegin() const { return this; }
+    const_iterator cend() const { return this + 1; }
+
+    intmax_t&       depth() { return m_depth; }
+    const intmax_t& depth() const { return m_depth; }
+
+protected:
+    static tid_type this_tid() { return std::this_thread::get_id(); }
+
+protected:
+    intmax_t    m_depth;
+    VTaskGroup* m_group;
+    ThreadPool* m_pool;
+    void_func_t m_func = []() {};
+};
+
+//======================================================================================//
+
+}  // namespace PTL