include/linux/sched.h
384 struct task_struct {
385 volatile long state;
386 struct thread_info *thread_info;
387 atomic_t usage;
388 unsigned long flags;
389 unsigned long ptrace;
390
391 int lock_depth;
392
393 int prio, static_prio;
394 struct list_head run_list;
395 prio_array_t *array;
396
397 unsigned long sleep_avg;
398 long interactive_credit;
399 unsigned long long timestamp;
400 int activated;
401
302 unsigned long policy;
403 cpumask_t cpus_allowed;
404 unsigned int time_slice, first_time_slice;
405
406 struct list_head tasks;
407 struct list_head ptrace_children;
408 struct list_head ptrace_list;
409
410 struct mm_struct *mm, *active_mm;
...
413 struct linux_binfmt *binfmt;
414 int exit_code, exit_signal;
415 int pdeath_signal;
...
419 pid_t pid;
420 pid_t tgid;
...
426 struct task_struct *real_parent;
427 struct task_struct *parent;
428 struct list_head children;
429 struct list_head sibling;
430 struct task_struct *group_leader;
...
433 struct pid_link pids[PIDTYPE_MAX];
434
435 wait_queue_head_t wait_chldexit;
436 struct completion *vfork_done;
437 int __user *set_child_tid;
438 int __user *clear_child_tid;
439
440 unsigned long rt_priority;
441 unsigned long it_real_value, it_prof_value, it_virt_value;
442 unsigned long it_real_incr, it_prof_incr, it_virt_incr;
443 struct timer_list real_timer;
444 unsigned long utime, stime, cutime, cstime;
445 unsigned long nvcsw, nivcsw, cnvcsw, cnivcsw;
446 u64 start_time;
...
450 uid_t uid,euid,suid,fsuid;
451 gid_t gid,egid,sgid,fsgid;
452 struct group_info *group_info;
453 kernel_cap_t cap_effective, cap_inheritable, cap_permitted;
454 int keep_capabilities:1;
455 struct user_struct *user;
...
457 struct rlimit rlim[RLIM_NLIMITS];
458 unsigned short used_math;
459 char comm[16];
...
461 int link_count, total_link_count;
...
467 struct fs_struct *fs;
...
469 struct files_struct *files;
...
509 unsigned long ptrace_message;
510 siginfo_t *last_siginfo;
...
516 };
The following categories describe some of the types of things a process descriptor must keep track of during a process' lifespan: 進程運行中必須儲存的一些資訊類別
Process attributes進程屬性
Process relationships進程間關係
Process memory space進程記憶體空間
File management檔案管理
Signal management訊號管理
Process credentials進程信任狀態
Resource limits資源限制
Scheduling related fields調度相關的欄位
current宏指向當前進程資料結構描述符!可以自己寫一個小程式,將這些資訊都打出來!