linux内核中与进程相关的数据结构（基于linux3.16-rc4）

1.进程描述符

 1 struct task_struct { 2  3 　　 volatile long state; 4  5 　　....... 6  7 　　 struct list_head tasks; 8  9 　　.......10 11 　　 struct mm_struct *mm, *active_mm;12 13 　　.......14 15 　　 struct vm_area_struct *vmacache[VMACACHE_SIZE];16 17 　　......18 19  　　pid_t pid;20 　　 pid_t tgid;21 22 　　.......23    }

所在文件：include/linux/sched.h

2.线程描述符（current指向该描述符，并通过该描述符找到进程描述符）

 1  struct thread_info { 2          struct task_struct      *task;                             /* main task structure */ 3          struct2. exec_domain  *exec_domain;              /* execution domain */ 4          __u32                        flags;                             /* low level flags */ 5          __u32                        status;                          /* thread synchronous flags     */ 6          __u32                        cpu;                             /* current CPU */ 7          int                              saved_PReempt_count; 8          mm_segment_t         addr_limit; 9          struct restart_block   restart_block;10          void __user               *sysenter_return;11          unsigned int              sig_on_uaccess_error:1;12          unsigned int              uaccess_err:1;              /* uaccess failed */13    };

所在文件：arch/x86/include/asm/thread_info.h

3.进程的内核栈

1   union thread_union {2 3 　　struct thread_info thread_info;4 5 　　unsigned long stack[THREAD_SIZE/sizeof(long)];6 7    }

所在文件：include/linux/sched.h

4.进程的运行队列

1 struct rt_prio_array {                            2 3 　　 DECLARE_BITMAP(bitmap, MAX_RT_PRIO+1);4 5 　 　struct list_head queue[MAX_RT_PRIO];6 7 　}

所在文件：kernel/sched/sched.h