112 lines
5.0 KiB
C++
112 lines
5.0 KiB
C++
/*
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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_FDINFO_H_
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#define S3FS_FDCACHE_FDINFO_H_
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#include <memory>
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#include <mutex>
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#include <string>
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#include "common.h"
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#include "fdcache_entity.h"
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#include "psemaphore.h"
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#include "metaheader.h"
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#include "types.h"
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class UntreatedParts;
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//------------------------------------------------
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// Class PseudoFdInfo
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//------------------------------------------------
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class PseudoFdInfo
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{
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private:
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int pseudo_fd;
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int physical_fd;
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int flags; // flags at open
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mutable std::mutex upload_list_lock; // protects upload_id/fd, upload_list, etc.
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std::string upload_id GUARDED_BY(upload_list_lock); //
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int upload_fd GUARDED_BY(upload_list_lock); // duplicated fd for uploading
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filepart_list_t upload_list GUARDED_BY(upload_list_lock);
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petagpool etag_entities GUARDED_BY(upload_list_lock); // list of etag string and part number entities(to maintain the etag entity even if MPPART_INFO is destroyed)
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int instruct_count GUARDED_BY(upload_list_lock); // number of instructions for processing by threads
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int last_result GUARDED_BY(upload_list_lock); // the result of thread processing
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Semaphore uploaded_sem; // use a semaphore to trigger an upload completion like event flag
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private:
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bool Clear();
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void CloseUploadFd();
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bool OpenUploadFd();
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bool ResetUploadInfo() REQUIRES(upload_list_lock);
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bool RowInitialUploadInfo(const std::string& id, bool is_cancel_mp);
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void IncreaseInstructionCount();
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bool GetUploadInfo(std::string& id, int& fd) const;
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bool ParallelMultipartUpload(const char* path, const mp_part_list_t& mplist, bool is_copy);
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bool InsertUploadPart(off_t start, off_t size, int part_num, bool is_copy, etagpair** ppetag);
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bool CancelAllThreads();
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bool ExtractUploadPartsFromUntreatedArea(off_t untreated_start, off_t untreated_size, mp_part_list_t& to_upload_list, filepart_list_t& cancel_upload_list, off_t max_mp_size);
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bool IsUploadingHasLock() const REQUIRES(upload_list_lock);
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public:
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explicit PseudoFdInfo(int fd = -1, int open_flags = 0);
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~PseudoFdInfo();
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PseudoFdInfo(const PseudoFdInfo&) = delete;
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PseudoFdInfo(PseudoFdInfo&&) = delete;
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PseudoFdInfo& operator=(const PseudoFdInfo&) = delete;
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PseudoFdInfo& operator=(PseudoFdInfo&&) = delete;
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int GetPhysicalFd() const { return physical_fd; }
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int GetPseudoFd() const { return pseudo_fd; }
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int GetFlags() const { return flags; }
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bool Writable() const;
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bool Readable() const;
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bool Set(int fd, int open_flags);
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bool ClearUploadInfo(bool is_cancel_mp = false);
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bool InitialUploadInfo(const std::string& id){ return RowInitialUploadInfo(id, true); }
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bool IsUploading() const;
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bool GetUploadId(std::string& id) const;
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bool GetEtaglist(etaglist_t& list) const;
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bool AppendUploadPart(off_t start, off_t size, bool is_copy = false, etagpair** ppetag = nullptr);
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bool ParallelMultipartUploadAll(const char* path, const mp_part_list_t& to_upload_list, const mp_part_list_t& copy_list, int& result);
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int PreMultipartUploadRequest(const std::string& strpath, const headers_t& meta);
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int WaitAllThreadsExit();
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ssize_t UploadBoundaryLastUntreatedArea(const char* path, headers_t& meta, FdEntity* pfdent) REQUIRES(pfdent->GetMutex());
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bool ExtractUploadPartsFromAllArea(UntreatedParts& untreated_list, mp_part_list_t& to_upload_list, mp_part_list_t& to_copy_list, mp_part_list_t& to_download_list, filepart_list_t& cancel_upload_list, bool& wait_upload_complete, off_t max_mp_size, off_t file_size, bool use_copy);
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};
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typedef std::map<int, std::unique_ptr<PseudoFdInfo>> fdinfo_map_t;
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#endif // S3FS_FDCACHE_FDINFO_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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