半完成bucket

include/types/int32.h

@@ -0,0 +1,26 @@
+#ifndef _TYPE_INT32_H_
+#define _TYPE_INT32_H_
+
+#include <stdint.h>
+#include "../types.h"
+
+#define INT32_BUCKET_SZ (256)
+#define INT32_INDEX_SZ ((INT32_BUCKET_SZ+1)*(PAGESZ+8))
+
+// len(buf) >= INT32_INDEX_SZ = (PAGESZ+8)*(256+1) = 4104*257 = 1054728 (1M)
+// 256个哈希桶, 多出来一个是机动空间, 用于加载溢出桶
+void* create_int32_index(int fd, void* buf);
+
+void* load_int32_index(int fd, uint64_t ptr, void* buf);
+
+int remove_int32_index(int fd, void* index);
+
+uint64_t count_int32_items(int fd, void* index);
+
+int insert_int32_item(int fd, void* index, key_t k, uint64_t ptr);
+
+uint64_t find_item_by_int32_key(int fd, void* index, key_t k);
+
+uint64_t remove_item_by_int32_key(int fd, void* index, key_t k);
+
+#endif