forked from jiuyuan/JYCache
110 lines
3.1 KiB
C
110 lines
3.1 KiB
C
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/*
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* s3fs - FUSE-based file system backed by Amazon S3
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*
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* Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef S3FS_THREADPOOLMAN_H_
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#define S3FS_THREADPOOLMAN_H_
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#include <atomic>
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#include <list>
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#include <memory>
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#include <vector>
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#include "psemaphore.h"
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//------------------------------------------------
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// Typedefs for functions and structures
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//------------------------------------------------
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//
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// Prototype function
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//
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typedef void* (*thpoolman_worker)(void*); // same as start_routine for pthread_create function
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//
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// Parameter structure
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//
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// [NOTE]
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// The args member is a value that is an argument of the worker function.
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// The psem member is allowed nullptr. If it is not nullptr, the post() method is
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// called when finishing the function.
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//
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struct thpoolman_param
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{
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void* args;
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Semaphore* psem;
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thpoolman_worker pfunc;
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thpoolman_param() : args(nullptr), psem(nullptr), pfunc(nullptr) {}
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};
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typedef std::list<std::unique_ptr<thpoolman_param>> thpoolman_params_t;
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typedef std::vector<pthread_t> thread_list_t;
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//------------------------------------------------
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// Class ThreadPoolMan
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//------------------------------------------------
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class ThreadPoolMan
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{
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private:
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static ThreadPoolMan* singleton;
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std::atomic<bool> is_exit;
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Semaphore thpoolman_sem;
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bool is_lock_init;
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pthread_mutex_t thread_list_lock;
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thread_list_t thread_list;
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thpoolman_params_t instruction_list;
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private:
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static void* Worker(void* arg);
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explicit ThreadPoolMan(int count = 1);
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~ThreadPoolMan();
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ThreadPoolMan(const ThreadPoolMan&) = delete;
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ThreadPoolMan(ThreadPoolMan&&) = delete;
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ThreadPoolMan& operator=(const ThreadPoolMan&) = delete;
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ThreadPoolMan& operator=(ThreadPoolMan&&) = delete;
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bool IsExit() const;
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void SetExitFlag(bool exit_flag);
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bool StopThreads();
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bool StartThreads(int count);
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bool SetInstruction(std::unique_ptr<thpoolman_param> pparam);
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public:
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static bool Initialize(int count);
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static void Destroy();
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static bool Instruct(std::unique_ptr<thpoolman_param> pparam);
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};
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#endif // S3FS_THREADPOOLMAN_H_
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/*
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* Local variables:
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* tab-width: 4
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* c-basic-offset: 4
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* End:
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* vim600: expandtab sw=4 ts=4 fdm=marker
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* vim<600: expandtab sw=4 ts=4
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*/
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