/*****************************************************************************/
//?/opt/t500/tools/uclibc/bin/mips-uclibc-gcc?-static?-o?mytop2?mytop2.c
/*
?*??????cpu.c?--?simple?CPU?usage?reporting?tool.
?*
?*??????（C）?Copyright?2000?Greg?Ungerer?（gerg@lineo.com）
?*/

/*****************************************************************************/

#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?


#define?VALID_PROCSTATE?0xa84b62fc

struct?procState
{
????????char?procname[32];
????????FILE?*?fp;
????????int?pid;
????????unsigned?int?utimeold;
????????unsigned?int?utimenew;
????????unsigned?int?stimeold;
????????unsigned?int?stimenew;
????????unsigned?int?allold;
????????unsigned?int?allnew;
????????int?valid;
};

#define?MAX_THREADS_NUM?100
struct?procState?lanProc[MAX_THREADS_NUM];
int?procTotal=0;
char?targetProcName[64]=““;
int?targetProcPid=0;

char?taskName[64]=““;
FILE????????????*taskfp;
FILE????????????*statfp;

char?*version?=?“1.0.0“;
char????????????*procdevice?=?“/proc/stat“;

struct?dirent?*taskdirent;
DIR?*?taskdir;

struct?stats
{
????????unsigned?int????user;
????????unsigned?int????nice;
????????unsigned?int????system;
????????unsigned?int????idle;
????????unsigned?int????total;
};

void?readprocessstat（?void?）;

int?getdata（struct?stats?*st）
{
????????unsigned?char???buf[80];
????????int?i;


????????for（i=0;i????????{
????????????????if?（（lanProc[i].fp?=?fopen（lanProc[i].procname“r“））?==?NULL）?{
??????????????????????fprintf（stderr?“ERROR:?failed?errno=%d\n“?errno）;
??????????????????????exit（-1）;
????????????????}

????????????????fscanf（lanProc[i].fp?“%d?%s?%s?%s?%s?%s?%s?%s?%s?%s?%s?%s?%s?%lu?%lu“?&lanProc[i].pid
???????????????????????&buf[0]&buf[0]&buf[0]&buf[0]&buf[0]&buf[0]&buf[0]&buf[0]&buf[0]&buf[0]&buf[0]&buf[0]
???????????????????????&lanProc[i].utimenew&lanProc[i].stimenew）;
								fclose（lanProc[i].fp）;
????????}

????????if?（（statfp?=?fopen（procdevice?“r“））?==?NULL）?{
????????????????fprintf（stderr?“ERROR:?failed?to?open?%s?errno=%d\n“
????????????????????????procdevice?errno）;
????????????????exit（0）;
????????}

????????fscanf（statfp?“%s?%d?%d?%d?%d“?&buf[0]?&st->user?&st->nice&st->system?&st->idle）;
				fclose（statfp）;
				
????????st->total?=?st->user?+?st->nice?+?st->system?+?st->idle;
????????for（i=0;i????????{
????????????????lanProc[i].allnew?=?lanProc[i].utimenew?+?lanProc[i].stimenew;
????????}

????????return（0）;
}

void?usage（FILE?*fp?int?rc）
{
????????fprintf（fp?“Usage:?cpu?[-h?ra]?[-s?seconds]?[-c?count]?“
????????????????“[-d?]\n\n“）;
????????fprintf（fp?“????????-h?????????????this?help\n“）;