for_each_process – 它是否迭代线程和进程?

我想迭代内核中的所有任务(线程和进程),并使用for_each_processmacros打印tid / pid和名称:

#define for_each_process(p) \ for (p = &init_task ; (p = next_task(p)) != &init_task ; ) 

我怎样才能区分线程和进程?

所以我会这样打印:

  if (p->real_parent->pid == NULL) printk("PROCESS: name: %s pid: %d \n",p->comm,p->pid); else printk("THREAD: name: %s tid: %d \n",p->comm,p->pid); 

Solutions Collecting From Web of "for_each_process – 它是否迭代线程和进程?"

下面的宏是你需要的:

 /* * Careful: do_each_thread/while_each_thread is a double loop so * 'break' will not work as expected - use goto instead. */ #define do_each_thread(g, t) \ for (g = t = &init_task ; (g = t = next_task(g)) != &init_task ; ) do #define while_each_thread(g, t) \ while ((t = next_thread(t)) != g) 

像这样使用它们:

  rcu_read_lock(); do_each_thread(g, t) { //... } while_each_thread(g, t); rcu_read_unlock();