40 rader
817 B
40 rader
817 B
//
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// Created by 马也驰 on 2025/1/3.
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//
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#ifndef LEVELDB_GC_EXECUTOR_H
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#define LEVELDB_GC_EXECUTOR_H
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#include <cstdint>
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#include <cstdlib>
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#include <string>
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class VlogGC;
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class gc_executor {
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public:
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explicit gc_executor() {}
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~gc_executor() = default;
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public:
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static void exec_gc(VlogGC *vlog_gc_, size_t old_vlog_num, size_t new_vlog_num);
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private:
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static inline bool value_deleted(uint16_t value_len) {
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return !(value_len >> 15);
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}
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static inline uint16_t get_value_len(char *value) {
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uint16_t value_len;
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memcpy(&value_len, value, sizeof(uint16_t));
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return value_len;
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}
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static inline size_t get_value_slotnum(char *value) {
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size_t slot_num;
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memcpy(&slot_num, &value[sizeof(uint16_t)], sizeof(size_t));
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return slot_num;
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}
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};
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#endif // LEVELDB_GC_EXECUTOR_H
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