From 5b1960ccbdda1a99ccd22638bb4721ee5c4c3331 Mon Sep 17 00:00:00 2001
From: Douglas Rumbaugh <dbr4@psu.edu>
Date: Mon, 8 May 2023 13:30:20 -0400
Subject: Record.h: Renamed record_t to Record for POSIX compliance.

Required for compliance with POSIX B.2.12.

The other _t types, key_t, val_t, header_t, etc. will be revised later
when switching over to a templated version of this code.
---
 include/util/Record.h | 65 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 include/util/Record.h

(limited to 'include/util/Record.h')

diff --git a/include/util/Record.h b/include/util/Record.h
new file mode 100644
index 0000000..7e64959
--- /dev/null
+++ b/include/util/Record.h
@@ -0,0 +1,65 @@
+/*
+ * include/util/record.h
+ *
+ * Copyright (C) 2023 Douglas Rumbaugh <drumbaugh@psu.edu>
+ *                    Dong Xie <dongx@psu.edu>
+ *
+ * All rights reserved. Published under the Modified BSD License.
+ *
+ */
+#pragma once
+
+#include <cstring>
+
+#include "util/base.h"
+
+namespace de {
+
+typedef uint32_t hdr_t;
+typedef uint64_t key_t;
+typedef uint32_t value_t;
+typedef uint64_t weight_t;
+
+struct Record {
+    key_t key;
+    value_t value;
+    hdr_t header;
+    weight_t weight;
+
+    inline bool match(key_t k, value_t v, bool is_tombstone) const {
+        return (key == k) && (value == v) && ((header & 1) == is_tombstone);
+    }
+
+    inline void set_delete_status() {
+        header |= 2;
+    }
+
+    inline bool get_delete_status() const {
+        return header & 2;
+    }
+
+    inline bool is_tombstone() const {
+        return header & 1;
+    }
+
+    inline int match(const Record* other) const {
+        return key == other->key && value == other->value;
+    }
+
+    inline bool operator<(const Record& other) const {
+        return key < other.key || (key == other.key && value < other.value);
+    }
+
+    inline bool lt(const key_t& k, const value_t& v) const {
+        return key < k || (key == k && value < v);
+    }
+};
+
+static_assert(sizeof(Record) == 24, "Record is not 24 bytes long.");
+
+static bool memtable_record_cmp(const Record& a, const Record& b) {
+    return (a.key < b.key) || (a.key == b.key && a.value < b.value)
+        || (a.key == b.key && a.value == b.value && a.header < b.header);
+}
+
+}
-- 
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