main.c

linux 系统下通过top机制

#include "machine.h"
#include <stdio.h>
#include <unistd.h>

int machine_init(struct statics * statics);
void get_system_info(struct system_info *info);        
void read_one_proc_stat(pid_t pid, struct top_proc *proc);
char *format_next_process(struct top_proc *p);

int main()
{
	 struct statics stat;
	 machine_init(&stat);
	 struct system_info info;
	 get_system_info(&info);
	 struct top_proc proc;
	 
	 
	 for(;;)
	 {
		 printf("Used CPU:%.1f%%\n",(float)info.cpustates[0]/10);
		 printf("Nice CPU:%.1f%%\n",(float)info.cpustates[1]/10);
		 printf("System CPU:%.1f%%\n",(float)info.cpustates[2]/10);
		 printf("Idle CPU:%.1f%%\n",(float)info.cpustates[3]/10);
		 
		 printf("total memroy:%d\n", info.memory[0]);
		 printf("free memroy:%d\n", info.memory[1]);
		 printf("buffers:%d\n", info.memory[2]);
		 printf("cached:%d\n", info.memory[3]);
		 printf("total swap:%d\n", info.memory[4]);
		 printf("free swap:%d\n", info.memory[5]);
	
		 sleep(2);
		 printf("..................................\n");
		 get_system_info(&info);
		 
		 read_one_proc_stat( (pid_t)7443, &proc);
	
		 struct top_proc *p = &proc;
	
		printf("%s\n",format_next_process(p));
	 }
	return 0;
}