unordered_tire/analysis6.cpp

#include <iostream>
#include <string>
#include <vector>
#include <unordered_map>
#include <chrono>
#include <cstdlib>
#include <fstream>
using namespace std;

#include <unistd.h>

int GetSysMemInfo() {  //获取系统当前可用内存
	int tSize = 0, resident = 0, share = 0;
	ifstream buffer("/proc/self/statm");
	buffer >> tSize >> resident >> share;
	buffer.close();

	long page_size_kb = sysconf(_SC_PAGE_SIZE) / 1024; // in case x86-64 is configured to use 2MB pages
	double rss = resident * page_size_kb;
	cout << "RSS: " << rss << " kB.\t\t";

	double shared_mem = share * page_size_kb;
	cout << "Shared Memory: " << shared_mem << " kB.\t\t";

	cout << "Private Memory: " << rss - shared_mem << "kB." << endl;
	return 0;
}

#include "list.h"
#include "tire.h"

const int N = 1e5;
const int M1 = 3;
const int M2 = 5;

struct Test {
	int num;
	string str;
};


void umap_test() {
	unordered_map<string, Test> umap;
	for (int i = 0; i < N; ++i) {
		Test test;
		test.num = i + 1;
		test.str = to_string(i + 1);
		umap.insert({ test.str, test });
	};
	cout << "umap: ";
	GetSysMemInfo();
}

void tire_test() {
	Tire<Test> tire;
	for (int i = 0; i < N; ++i) {
		Test test;
		test.num = i + 1;
		test.str = to_string(i + 1);
		tire.insert(test.str, test);
	};
	cout << "tire: ";
	GetSysMemInfo();
}

int main() {
	Tire<Test> tire;
	unordered_map<string, Test> umap;
	cout << "main: ";
	GetSysMemInfo();

	// group 2
	umap_test();
	// group 1
	tire_test();

	cout << "main: ";
	GetSysMemInfo();
	return 0;
}