linux任务管理器
在redhat2.4.20-8下编译通过：
由于本程序窗口部分由glad工具编制，源代码不易贴出，现只给出部分回调函数的代码：
1，“退出”按钮回调函数：
void
on_button9_clicked (GtkButton *button,
gpointer user_data)
{
gtk_main_quit();
}
2，“关机”按钮回调函数：
void
on_button10_clicked (GtkButton *button,
gpointer user_data)
{
system("halt");
}
3，“重新启动”按钮回调函数：
void
on_button11_clicked (GtkButton *button,
gpointer user_data)
{
system("reboot");
}
4，“主机名”字符块回调函数：
void
on_label38_realize (GtkWidget *widget,
gpointer user_data)
{
FILE * fp;
char buf[256];
fp=fopen("/proc/sys/kernel/hostname","r");
fgets(buf,256,fp);
fclose(fp);
gtk_label_set_text(widget,buf);
}
5，“CPU型号”字符块回调函数：
void
on_label45_realize (GtkWidget *widget,
gpointer user_data)
{
FILE * fp;
int i,j=0;
char buf[256],buf1[256];
fp=fopen("/proc/cpuinfo","r");
for(i=0;i<5;i++){
fgets(buf,256,fp);
}
for(i=0;i<256;i++){
if(buf[i]==':') break;
}
i+=2;
for(;i<256;i++){
if(buf[i]==' ') break;
}
i+=1;
while(i<256){
if(buf[i]==' '){
i++;
}
else{
buf1[j]=buf[i];
j++;
i++;
}
}
fclose(fp);
gtk_label_set_text(widget,buf1);//cpu型号
}
6，“CPU主频”回调函数：
void
on_label46_realize (GtkWidget *widget,
gpointer user_data)
{
FILE * fp;
int i,j=0;
char buf[256],buf1[256];
fp=fopen("/proc/cpuinfo","r");
for(i=0;i<7;i++){
fgets(buf,256,fp);
}
for(i=0;i<256;i++){
if(buf[i]==':') break;
}
i+=2;
j=0;
for(;i<256;i++){
if(buf[i]==' ') break;
else{
buf1[j]=buf[i];
j++;
}
}
buf1[j]='/0';
fclose(fp);
gtk_label_set_text(widget,buf1);//cpu型号
}
7，“系统版本号”回调函数：
void
on_label39_realize (GtkWidget *widget,
gpointer user_data)
{
FILE * fp;
char buf[256];
fp=fopen("/proc/sys/kernel/osrelease","r");
fgets(buf,256,fp);
fclose(fp);
gtk_label_set_text(widget,buf);
}
8，“系统运行时间”回调函数：
void timeout_label40 (GtkWidget *widget,gpointer user_data){
FILE * fp;
int i,j;
char buf[64],buf1[64];
fp=fopen("/proc/uptime","r");
fgets(buf,64,fp);
j=0;
for(i=0;i<64;i++){
if(buf[i]==' ') break;
else {
buf1[j]=buf[i];
j++;
}
}
buf1[j]='/0';
fclose(fp);
gtk_label_set_text(widget,buf1);
}
void
on_label40_realize (GtkWidget *widget,
gpointer user_data)
{
gtk_timeout_add(200,timeout_label40,widget);
}
9，“CPU运行时间”回调函数：
void timeout_label42 (GtkWidget *widget,gpointer user_data)
{
FILE * fp;
int i,j;
char buf[64],buf1[64];
fp=fopen("/proc/uptime","r");
fgets(buf,64,fp);
for(i=0;i<64;i++){
if (buf[i]==' ') break;
}
i++;
j=0;
for(;i<64;i++){
if(buf[i]==' ') break;
else {
buf1[j]=buf[i];
j++;
}
}
buf1[j]='//';
buf1[j+1]='0';
fclose(fp);
gtk_label_set_text(widget,buf1);
}
void
on_label42_realize (GtkWidget *widget,
gpointer user_data)
{
gtk_timeout_add(200,timeout_label42,widget);
}
10，“内存信息”回调函数：
void
on_label51_realize (GtkWidget *widget,
gpointer user_data)
{
FILE * fp;
int i,j;
char buf[256],buf1[256];
fp=fopen("/proc/meminfo","r");
fgets(buf,256,fp);
fgets(buf,256,fp);
for(i=0;i<256;i++){
if (buf[i]==':') break;
}
i++;
for(;i<256;i++){
if (buf[i]!=' ') break;
}
j=0;
for(;i<256;i++){
if(buf[i]==' ') break;
else {
buf1[j]=buf[i];
j++;
}
}
buf1[j]='/0';
fclose(fp);
gtk_label_set_text(widget,buf1);
}
11，“SWAP信息”回调函数：
void
on_label53_realize (GtkWidget *widget,
gpointer user_data)
{
FILE * fp;
int i,j;
char buf[256],buf1[256];
fp=fopen("/proc/meminfo","r");
fgets(buf,256,fp);
fgets(buf,256,fp);
fgets(buf,256,fp);
for(i=0;i<256;i++){
if (buf[i]==':') break;
}
i++;
for(;i<256;i++){
if (buf[i]!=' ') break;
}
j=0;
for(;i<256;i++){
if(buf[i]==' ') break;
else {
buf1[j]=buf[i];
j++;
}
}
buf1[j]='/0';
fclose(fp);
gtk_label_set_text(widget,buf1);
}
12，“内存使用信息”回调函数：
void timeout_label52 (GtkWidget *widget,gpointer user_data)
{
FILE * fp;
int i,j;
char buf[256],buf1[256];
fp=fopen("/proc/meminfo","r");
fgets(buf,256,fp);
fgets(buf,256,fp);
for(i=0;i<256;i++){
if (buf[i]==':') break;
}
i++;
for(;i<256;i++){
if (buf[i]!=' ') break;
}
for(;i<256;i++){
if (buf[i]==' ') break;
}
for(;i<256;i++){
if (buf[i]!=' ') break;
}
j=0;
for(;i<256;i++){
if(buf[i]==' ') break;
else {
buf1[j]=buf[i];
j++;
}
}
buf1[j]='/0';
fclose(fp);
gtk_label_set_text(widget,buf1);
}
void
on_label52_realize (GtkWidget *widget,
gpointer user_data)
{
gtk_timeout_add(200,timeout_label52,widget);
}
13，“SWAT使用信息”回调函数：
void timeout_label54 (GtkWidget *widget, gpointer user_data)
{
FILE * fp;
int i,j;
char buf[256],buf1[256];
fp=fopen("/proc/meminfo","r");
fgets(buf,256,fp);
fgets(buf,256,fp);
fgets(buf,256,fp);
for(i=0;i<256;i++){
if (buf[i]==':') break;
}
i++;
for(;i<256;i++){
if (buf[i]!=' ') break;
}
for(;i<256;i++){
if (buf[i]==' ') break;
}
for(;i<256;i++){
if (buf[i]!=' ') break;
}
j=0;
for(;i<256;i++){
if(buf[i]==' ') break;
else {
buf1[j]=buf[i];
j++;
}
}
buf1[j]='/0';
fclose(fp);
gtk_label_set_text(widget,buf1);
}
void
on_label54_realize (GtkWidget *widget,
gpointer user_data)
{
gtk_timeout_add(200,timeout_label54,widget);
}
14，“进程显示”函数（此函数写在main.c中）：
void procc_see(GtkWidget * window)
{
GtkWidget *widget,*view;
GtkTextBuffer * buffer;
FILE *fp;
GtkTextIter p;
int i;
char *buf=malloc(2048*sizeof(char));
fp=popen("ps -l -x","r");
/*for(i=0;i<12288;i++)
{
fscanf(fp,"%c",&buf[i]);
if(buf[i]=='/0')break;
}
view = lookup_widget(window,"textview1");
buffer=gtk_text_buffer_new(NULL);
gtk_text_view_set_buffer(GTK_TEXT_VIEW(view), buffer);
gtk_text_buffer_set_text(buffer,buf,-1);*/
widget=lookup_widget(window,"textview1");
buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(widget));
buffer = gtk_text_buffer_new(gtk_text_buffer_get_tag_table(buffer));
gtk_text_view_set_buffer(GTK_TEXT_VIEW(widget), buffer);
g_object_unref(G_OBJECT(buffer));
gtk_text_buffer_get_end_iter(buffer, &p);
while((i = fread(buf, 1, sizeof(buf), fp)) > 0) {
GError *err = NULL;
gsize br, bw;
gchar *text;
if(!(text = g_locale_to_utf8(buf, i, &br, &bw, &err))) {
g_printerr("Failed locale to UTF-8 conversion: %s/n", err->message);
g_clear_error(&err);
break;
}
gtk_text_buffer_insert(buffer, &p, text, bw);
g_free(text);
}
pclose(fp);
}
15，“查看系统类型”回调函数：和前面“查看系统版本”的回调函数是一样的，只不过要用到的文件不同。
不做赘述。
最后，用命令：./autogen.sh和make install 编译。
说明：此进程管理器实现的功能较少，不过，用此模式编写的程序很容易扩充，主要是回调函数的编写，相关内容请查看有关书籍或Google！