学校网站源码php,网站建设易网宣,怎么用阿里云建设网站,access数据库网站开发2011-02-23 14:51:19其实也是WINDOWS下的通用办法啦#xff0c;只不过我用PYTHON表达。用win32api.GetSystemTime()不是太精确#xff0c;值15毫秒才变一下#xff0c;最好用time.clock()#xff0c;这个能到毫秒级#xff0c;最精确的办法是用QueryPerformanceFrequency(…2011-02-23 14:51:19其实也是WINDOWS下的通用办法啦只不过我用PYTHON表达。用win32api.GetSystemTime()不是太精确值15毫秒才变一下最好用time.clock()这个能到毫秒级最精确的办法是用QueryPerformanceFrequency()函数和QueryPerformanceCounter()函数。用CPU周期计时很精确。win32api里没定义调用办法如下import time,ctypesfreq ctypes.c_longlong(0)ctypes.windll.kernel32.QueryPerformanceFrequency(ctypes.byref(freq))ffreq.valueprint fctypes.windll.kernel32.QueryPerformanceCounter(ctypes.byref(freq))n1freq.valueprint n1time.sleep(1)ctypes.windll.kernel32.QueryPerformanceCounter(ctypes.byref(freq))n2freq.valueprint n2print (n2-n1)/(f0.)
