Thread View: cn.bbs.comp.unix.programming.kernel
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Started by �������
Wed, 13 Mar 2002 13:03
Re: ��̣����ں˿ռ���λ�õ�ǰϵͳʱ�䣿
Author: �������
Date: Wed, 13 Mar 2002 13:03
Date: Wed, 13 Mar 2002 13:03
20 lines
1827 bytes
1827 bytes
xtime�ṹ�У�һ�����룬һ���ǵ�ǰ���ڵ�����(10e-6 us)
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#define rdtsc(low,high) \
__asm__ __volatile__("rdtsc" : "=a" (low), "=d" (high))
��һ�²�CPUƵ�ʵ�__initfunc(static unsigned long calibrate_tsc(void))����
arch/i386/kernel/time.c
�� �� lefty.bbs@apue.dhs.org (Ʋ��) �Ĵ������ᵽ: ��
: Thanks ��ʵ����ͨ��CURRENT_TIME���Ի�õ�ǰ��ϵͳʱ�䣬ֻ�ǻ��
: ��ʱ��������Ϊ��λ�ģ���֪������λ�ø�߾��ȵ�ʱ�䣬������������ȵ�
--
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