forked from jiuyuan/JYCache
72 lines
2.1 KiB
C
72 lines
2.1 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_FDCACHE_PSEUDOFD_H_
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#define S3FS_FDCACHE_PSEUDOFD_H_
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#include <vector>
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//------------------------------------------------
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// Typdefs
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//------------------------------------------------
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// List of pseudo fd in use
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//
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typedef std::vector<int> pseudofd_list_t;
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//------------------------------------------------
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// Class PseudoFdManager
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//------------------------------------------------
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class PseudoFdManager
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{
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private:
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pseudofd_list_t pseudofd_list;
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bool is_lock_init;
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pthread_mutex_t pseudofd_list_lock; // protects pseudofd_list
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private:
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static PseudoFdManager& GetManager();
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PseudoFdManager();
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~PseudoFdManager();
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PseudoFdManager(const PseudoFdManager&) = delete;
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PseudoFdManager(PseudoFdManager&&) = delete;
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PseudoFdManager& operator=(const PseudoFdManager&) = delete;
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PseudoFdManager& operator=(PseudoFdManager&&) = delete;
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int GetUnusedMinPseudoFd() const;
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int CreatePseudoFd();
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bool ReleasePseudoFd(int fd);
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public:
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static int Get();
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static bool Release(int fd);
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};
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#endif // S3FS_FDCACHE_PSEUDOFD_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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