main.c

这是一个针对linux操作系统的任务管理器

#include <stdio.h>
#include <stdlib.h>
#include <gtk/gtk.h>
#include <dirent.h>
#include <string.h>

GtkWidget *ssslabel;
GtkWidget *rrrlabel;


void restart(void)
{
	system("reboot");
}

void shutdown(void)
{
	system("halt");
}

gint delete_event( GtkWidget *widget,
             GdkEvent *event,
             gpointer   data )
{
    gtk_main_quit ();
    return FALSE;
}

void get_cpu_rate(float *temp)
{	
	FILE * fp;
        int i=0;
        float cpu,sum,user,nice,system,idle,iowait,irq,softirq;
        char _buf1[256];
	char *buf1 = _buf1;
        
        fp=fopen("/proc/stat","r");
        fgets(buf1,256,fp);

        for(i=0;i<256;i++){
   	if(buf1[i]==' ') break;
	}
        for(;i<256;i++){
   	if(buf1[i]!=' ') break;
	}
        buf1=buf1+i;
        user=atof(buf1);

        for(i=0;i<256;i++){
   	if(buf1[i]==' ') break;
	}
        for(;i<256;i++){
   	if(buf1[i]!=' ') break;
	}
        buf1+=i;
        nice=atof(buf1);

        for(i=0;i<256;i++){
   	if(buf1[i]==' ') break;
	}
        for(;i<256;i++){
   	if(buf1[i]!=' ') break;
	}
        buf1+=i;
        system=atof(buf1);

        for(i=0;i<256;i++){
   	if(buf1[i]==' ') break;
	}
        for(;i<256;i++){
   	if(buf1[i]!=' ') break;
	}
        buf1+=i;
        idle=atof(buf1);

        for(i=0;i<256;i++){
   	if(buf1[i]==' ') break;
	}
        for(;i<256;i++){
   	if(buf1[i]!=' ') break;
	}
        buf1+=i;
        iowait=atof(buf1);

        for(i=0;i<256;i++){
   	if(buf1[i]==' ') break;
	}
        for(;i<256;i++){
   	if(buf1[i]!=' ') break;
	}
        buf1+=i;
        irq=atof(buf1);

        for(i=0;i<256;i++){
   	if(buf1[i]==' ') break;
	}
        for(;i<256;i++){
   	if(buf1[i]!=' ') break;
	}
        buf1+=i;
        softirq=atof(buf1);
        
        cpu=user+nice+system+idle+iowait+irq+softirq;
        sum=user+nice+system;
        temp[2]=(sum-temp[0])/(cpu-temp[1]);
        temp[0]=sum;
        temp[1]=cpu;
        sprintf(buf1,"CPU使用率：%.2f%%",temp[2]*100);
        gtk_label_set_text(GTK_LABEL(ssslabel),buf1);
        return;
}

void get_mem_info(void)
{
	FILE * fp;
        int i=0;
        char _buf1[100],_buf2[100],_buf3[100],_buf4[100];
        char *buf1=_buf1;
        char *buf2=_buf2;
        char *buf3=_buf3;
        char *buf4=_buf4;
        char buffer[1000];

        fp=fopen("/proc/meminfo","r");
        fgets(buf1,50,fp);
        for(i=0;i<50;i++){
   	if(buf1[i]==' ') break;
	}
        for(;i<50;i++){
   	if(buf1[i]!=' ') break;
	}
        buf1+=i;   
        buf1[12]='\0';
        
        fgets(buf2,50,fp);
        for(i=0;i<50;i++){
   	if(buf2[i]==' ') break;
	}
        for(;i<50;i++){
   	if(buf2[i]!=' ') break;
	}
        buf2+=i;   
        buf2[12]='\0';

        for(i=0;i<10;i++){
   	fgets(buf3,50,fp);
	}
        for(i=0;i<50;i++){
   	if(buf3[i]==' ') break;
	}
        for(;i<50;i++){
   	if(buf3[i]!=' ') break;
	}
        buf3+=i;   
        buf3[12]='\0';

        fgets(buf4,50,fp);
        for(i=0;i<50;i++){
   	if(buf4[i]==' ') break;
	}
        for(;i<50;i++){
   	if(buf4[i]!=' ') break;
	}
        buf4+=i;   
        buf4[12]='\0';

        fclose(fp);

        sprintf(buffer,"总内存：%s 剩余内存：%s\n总Swap：%s 剩余Swap：%s\n",buf1,buf2,buf3,buf4);        
        gtk_label_set_text(GTK_LABEL(rrrlabel),buffer);

        return;
}

gint func(gpointer temp)
{
        get_cpu_rate((float *)temp);
        get_mem_info();
	return TRUE;
}
    
char *get_cpu_name(char *buf1)
{

	FILE * fp;
	int i=0;
    	fp=fopen("/proc/cpuinfo","r");
	for(i=0;i<5;i++){
   	fgets(buf1,256,fp);
	}
	for(i=0;i<256;i++){
   	if(buf1[i]==':') break;
	}
	i+=2;
	buf1+=i;
	buf1[31]='\0';
	fclose(fp);
   	return buf1;
}

char *get_cpu_type(char *buf2)
{

	FILE * fp;
	int i=0;
    	fp=fopen("/proc/cpuinfo","r");
	for(i=0;i<2;i++){
   	fgets(buf2,256,fp);
	}
	for(i=0;i<256;i++){
   	if(buf2[i]==':') break;
	}
	i+=2;
	buf2+=i;
	buf2[12]='\0';
	fclose(fp);
   	return buf2;
}

char *get_cpu_f(char *buf3)
{

	FILE * fp;
	int i=0;
    	fp=fopen("/proc/cpuinfo","r");
	for(i=0;i<7;i++){
   	fgets(buf3,256,fp);
	}
	for(i=0;i<256;i++){
   	if(buf3[i]==':') break;
	}
	i+=2;
	buf3+=i;
	buf3[8]='\0';
	fclose(fp);
   	return buf3;
}

char *get_cache_size(char *buf4)
{

	FILE * fp;
	int i=0;
    	fp=fopen("/proc/cpuinfo","r");
	for(i=0;i<8;i++){
   	fgets(buf4,256,fp);
	}
	for(i=0;i<256;i++){
   	if(buf4[i]==':') break;
	}
	i+=2;
	buf4+=i;
	buf4[10]='\0';
	fclose(fp);
   	return buf4;
}

char *get_system_type(char *buf1)
{
	FILE * fp;
        int i=0;
        fp=fopen("/proc/version","r");
        fgets(buf1,256,fp);
        for(i=0;i<256;i++){
   	if(buf1[i]==' ') break;
	}
        buf1[i]='\0';
        fclose(fp);
        return buf1;
}

char *get_system_version(char *buf2)
{
	FILE * fp;
        int i=0;
        fp=fopen("/proc/version","r");
        fgets(buf2,256,fp);
        for(i=0;i<256;i++){
   	if(buf2[i]=='2') break;
	}
        buf2+=i;
        for(i=0;i<256;i++){
   	if(buf2[i]==' ') break;
	}
        buf2[i]='\0';
        fclose(fp);
        return buf2;
}

char *get_gcc_version(char *buf3)
{
	FILE * fp;
        int i=0;
        int j=0;
        fp=fopen("/proc/version","r");
        fgets(buf3,256,fp);
        for(i=0,j=0;i<256&&j<6;i++){
   	if(buf3[i]==' ') j++;
	}
        buf3+=i;
        for(i=0;i<256;i++){
   	if(buf3[i]==')') break;
	}