怎么把cpu的性能曲线改成正弦波

Question

#include
#include
#include
#include
5
6 using namespace std;
7
8 //得到循环0xFFFFFFFF次用的秒数
9 unsigned int test()
10 {
11 unsigned int c = 0xFFFFFFFF;
12
13 time_t t1, t2;
14 time(&t1);
15
16 for(unsigned int i = 0; i < c; i++)
17 ;
18 time(&t2);
19 return (unsigned int)(t2 -t1);
20
21 }
22
23
24 #define T 20000 //周期时间 20秒
25 #define C 100 //采样点时间间隔
26 #define PI 3.1415 //PI
27 const unsigned int count = 0xFFFFFFFF / (test() *1000); //采样间隔可以执行的循环数目
28 const unsigned int N = T/C; //周期内采样点数目
29 unsigned int v[N] = { 0 }; //所有采样点连续执行循环数
30 unsigned int mt[N] = { 0 }; //所有采样点休眠毫秒数
31
32 int main()
33 {
34 //计算循环次数和休眠时间
35 for(int i = 0; i < N; i++)
36 {
37 double x = 2 * PI * i / N;
38 double r = (sin(x) + 1) / 2;
39

40 mt[i] = C - r * C;
41 v[i] = r * C * count;
42 }
43 for(;;)
44 {
45 for(int i = 0; i < N; i++)
46 {
47 for(int j = 0; j < v[i]; j++)
48 ;
49 Sleep(mt[i]);
50 }
51 }
52 }
这段程序如何编译

Answer 1

看《编程之美》

http://blog.csdn.net/fssssssss/article/details/7483763
http://blog.csdn.net/wesweeky/article/details/6402564