42 lines
982 B
C
42 lines
982 B
C
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#ifndef THIN_PROVISIONING_CACHE_STREAM_H
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#define THIN_PROVISIONING_CACHE_STREAM_H
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#include "thin-provisioning/chunk_stream.h"
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//----------------------------------------------------------------
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namespace thin_provisioning {
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using namespace bcache;
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class cache_stream : public chunk_stream {
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public:
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cache_stream(std::string const &path,
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block_address block_size,
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size_t cache_mem);
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virtual block_address nr_chunks() const;
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virtual void rewind();
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virtual bool advance(block_address count = 1ull);
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virtual block_address index() const;
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virtual chunk const &get() const;
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private:
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void load(block_address b);
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block_address block_size_;
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block_address nr_blocks_;
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block_address cache_blocks_;
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int fd_;
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validator::ptr v_;
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std::auto_ptr<block_cache> cache_;
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block_address current_index_;
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block_cache::auto_block current_block_;
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chunk current_chunk_;
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};
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}
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//----------------------------------------------------------------
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#endif
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