Snapman系統中TCC執行效率和C#執行效率對比

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Snapman集合了TCC編譯器可以直接編譯執行C語言指令碼，其指令碼執行效率和C#編譯器進行效率對比，包括下面3方面：

1、函數執行效率

2、數字轉換成字串

3、字串的疊加

這是C#代碼：

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;namespace TestEfficiency{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        int fibonacci(int n)        {            if (n == 1 || n == 2)                return 1;            return fibonacci(n - 1) + fibonacci(n - 2);        }        string numberConvert()        {            string result = "";            for (int i = 0; i < 14000000; i++ )            {                result = i.ToString();            }            return result;        }        string stringAppend()        {            string conc = "StringBuilder sb = new StringBuilder(1024);";            StringBuilder sb = new StringBuilder(1024);            for (int i = 0; i < 1400; i++)            {                sb = new StringBuilder(1024);                for (int j = 0; j < 10000; j++ )                {                    sb.Append(conc);                }            }            return sb.ToString();        }        private void button1_Click(object sender, EventArgs e)        {            DateTime fbeforDT = System.DateTime.Now;            fibonacci(45);             DateTime fafterDT = System.DateTime.Now;            TimeSpan ts = fafterDT.Subtract(fbeforDT);            textBox1.Text = string.Format("fibonacci spend: {0}ms.", ts.TotalMilliseconds);            DateTime nbeforDT = System.DateTime.Now;            numberConvert();            DateTime nafterDT = System.DateTime.Now;            TimeSpan nts = nafterDT.Subtract(nbeforDT);            textBox2.Text = string.Format("numberConvert spend: {0}ms.", nts.TotalMilliseconds);            DateTime sbeforDT = System.DateTime.Now;            stringAppend();            DateTime safterDT = System.DateTime.Now;            TimeSpan sts = safterDT.Subtract(sbeforDT);            textBox3.Text = string.Format("stringAppend spend: {0}ms.", sts.TotalMilliseconds);        }    }}

這是C#編譯出來Release的頁面：

這是Snapman系統中寫的TCC指令碼代碼：

int fibonacci(int n)  {      if(n==1||n==2)          return 1;      return fibonacci(n-1) + fibonacci(n-2);  }char* numberConvert(){    char* result = (char*)malloc(128);    for (int i = 0; i < 14000000; i++ )    {        itoa(i,result,10);    }    return result;}char* stringAppend(){    char* conc = "StringBuilder sb = new StringBuilder(1024);";    char* sb = (char*)malloc(1024),*p;    int len = 1024, cl = strlen(conc), curlen = 0;    for (int i = 0; i < 1400; i++)    {        free(sb);        len = 1024;        curlen = 0;        sb = (char*)malloc(1024);        for(int j = 0; j < 10000; j++)        {            if(curlen + cl > len)            {                p = (char*)malloc(len*2);                memcpy(p,sb,curlen);                free(sb);                sb = p;                len *= 2;            }            memcpy(sb+curlen,conc,cl);            curlen += cl;        }    }    sb[curlen] = 0;    return sb;}void main(){    int starTicc = GetTickCount();    fibonacci(45);    wPrint(L"fibonacci spend: %dms",GetTickCount() - starTicc);        starTicc = GetTickCount();    free(numberConvert());    wPrint(L"numberConvert spend: %dms",GetTickCount() - starTicc);        starTicc = GetTickCount();    free(stringAppend());    wPrint(L"stringAppend spend: %dms",GetTickCount() - starTicc);}

 這是Snapman頁面：

兩種代碼的設計和實現方法完全一樣，其運行結果對比：

C#執行結果：

Snapman執行結果：

結論：對比結果發現C#除了最高效的StringBuilder和TCC字串操作執行速度接近外其他的運行速度都要比Snapman的運行速度慢一些，所以Snapman的指令碼運行速度是非常快速的。

Snapman的首頁：http://www.snapman.xyz

 

Snapman系統中TCC執行效率和C#執行效率對比