66 lines
1.6 KiB
C++
66 lines
1.6 KiB
C++
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2013, 2014, 2015.
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This program is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the Free
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Software Foundation, either version 3 of the License, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along with
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this program. If not, see <http://www.gnu.org/licenses/>.
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block.h
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Blocks in the filesystem.
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*******************************************************************************/
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#ifndef BLOCK_H
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#define BLOCK_H
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class Device;
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class Block
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{
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public:
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Block();
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Block(Device* device, uint32_t block_id);
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~Block();
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void Construct(Device* device, uint32_t block_id);
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void Destruct();
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public:
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pthread_mutex_t modify_lock;
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pthread_cond_t transit_done_cond;
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Block* prev_block;
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Block* next_block;
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Block* prev_hashed;
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Block* next_hashed;
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Block* prev_dirty;
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Block* next_dirty;
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Device* device;
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size_t reference_count;
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uint32_t block_id;
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bool dirty;
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bool is_in_transit;
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uint8_t* block_data;
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public:
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void Refer();
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void Unref();
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void Sync();
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void BeginWrite();
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void FinishWrite();
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void Use();
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void Unlink();
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void Prelink();
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};
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#endif
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