/*#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?

#define?FILE_LEN?1024*1024
*/

#include?“head.h“

void?Show_Stati（）
{
	int?who?=?RUSAGE_SELF;
	struct?rusage?usage;
	int?success_flag;

	success_flag?=?getrusage（who?&usage）;
	
	if?（success_flag?==?-1）
	{
		printf（“Process?statistics?is?unknown.?\n“）;
	}
	else
	{
		long?user_time?=?usage.ru_utime.tv_sec*1000?+?usage.ru_utime.tv_usec/1000;
		long?sys_time?=?usage.ru_stime.tv_sec*1000?+?usage.ru_stime.tv_usec/1000;
		long?involun?=?usage.ru_nivcsw;
		long?volun?=?usage.ru_nvcsw;
		long?iopf?=?usage.ru_majflt;
		long?uniopf?=?usage.ru_minflt;
		
		printf（“The?amount?of?user?time?used?（milliseconds）:?%ld?\n“?user_time）;
		printf（“The?amount?of?system?time?used?（milliseconds）:?%ld?\n“?sys_time）;
		printf（“The?number?of?times?the?process?was?preempted?involuntarily?（milliseconds）:?%ld?\n“?involun）;
		printf（“The?number?of?times?the?process?gave?up?the?CPU?voluntarily?（milliseconds）:?%ld?\n“?volun）;
		printf（“The?number?of?page?faults?with?I/O:?%ld?\n“?iopf）;
		printf（“The?number?of?page?faults?without?I/O:?%ld?\n“?uniopf）;
		printf（“\n“）;
	}
}


int?main（int?argc?char?*argv[]）
{
??	struct?timeval?tv0;
????struct?timeval?tv1;	
????struct?timezone?tz0;
????struct?timezone?tz1;
????int?walk_clock_time?=?0;
????
????//獲取進程運行前墻上時鐘時間					
	gettimeofday（&tv0?&tz0）;
????
	sleep（5）;
	FILE?*file;
	char?file_content[FILE_LEN];
	int??len?=?0;

	file?=?fopen（argv[0]?“r“）;
	len?=?fread（file_content?sizeof（char）?FILE_LEN?file）;
	
	printf（“\n“）;
	printf（“%s“?file_content）;
	printf（“The?length?of?file?is?%d?\n“?len）;	??
	printf（“\n“）;
	
	//獲取進程運行后墻上時鐘時間
	gettimeofday（&tv1?&tz1）;
				
	walk_clock_time?=?（tv1.tv_sec?-?tv0.tv_sec）*1000?+?（tv1.tv_usec?-?tv0.tv_usec）/1000;	
	printf（“\n“）;		
	printf（“The?“wall-clock”?time?for?the?command?to?execute?（milliseconds）:?%d?\n“?walk_clock_time）;
				
	Show_Stati（）;	
	
	return?0;
}??

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????2097??2007-07-23?04:03??實驗四\shell_prompt\back_cat.c

?????文件???????2077??2007-07-23?03:51??實驗四\shell_prompt\back_cat.c~

?????文件???????9496??2007-07-23?04:44??實驗四\shell_prompt\back_cat.out

?????文件???????2219??2007-07-23?04:03??實驗四\shell_prompt\back_ls.c

?????文件???????2199??2007-07-23?03:51??實驗四\shell_prompt\back_ls.c~

?????文件???????9533??2007-07-23?04:44??實驗四\shell_prompt\back_ls.out

?????文件????????351??2007-07-23?04:03??實驗四\shell_prompt\head.h

?????文件????????351??2007-07-23?03:52??實驗四\shell_prompt\head.h~

?????文件????????351??2007-07-23?04:43??實驗四\shell_prompt\Makefile

?????文件????????345??2007-07-23?04:38??實驗四\shell_prompt\makefile~

?????文件???????6394??2007-07-23?04:09??實驗四\shell_prompt\my.c

?????文件???????6390??2007-07-23?04:06??實驗四\shell_prompt\my.c~

?????文件??????14574??2007-07-23?04:44??實驗四\shell_prompt\my.out

?????文件????????116??2007-07-23?05:09??實驗四\shell_prompt\Readme

?????目錄??????????0??2011-01-04?16:34??實驗四\shell_prompt

?????目錄??????????0??2011-01-04?16:34??實驗四

-----------?---------??----------?-----??----

????????????????56493????????????????????16