add old lci module

lci/src/hd/mem.cpp

@@ -0,0 +1,21 @@
+#include "hd/mem.h"
+
+/* 通过SysInfo接口获取内存使用情况 失败会返回NULL */
+MemoryInfo getMemoryUsageWithSysinfo() {
+	MemoryInfo memInfo = {0};
+	struct sysinfo si;
+
+	if (sysinfo(&si) == 0)
+	{
+		memInfo.totalMemory = si.totalram * si.mem_unit;
+		memInfo.freeMemory = si.freeram * si.mem_unit;
+		memInfo.usedMemory = memInfo.totalMemory - memInfo.freeMemory;
+
+		if (memInfo.totalMemory > 0)
+			memInfo.usageRate = 100.0 * memInfo.usedMemory / memInfo.totalMemory;
+	}
+	else
+		std::cerr << "sysinfo Call Failed" << std::endl;
+
+	return memInfo;
+}