1 #pragma once
2 
3 #include <common/glib.h>
4 #include <process/process.h>
5 
6 /*
7  * Scheduling policies
8  */
9 #define SCHED_NORMAL 0
10 #define SCHED_FIFO 1
11 #define SCHED_RR 2
12 #define SCHED_BATCH 3
13 /* SCHED_ISO: reserved but not implemented yet */
14 #define SCHED_IDLE 5
15 #define SCHED_DEADLINE 6
16 #define SCHED_MAX_POLICY_NUM SCHED_DEADLINE
17 
18 #define IS_VALID_SCHED_POLICY(_policy) ((_policy) > 0 && (_policy) <= SCHED_MAX_POLICY_NUM)
19 
20 // struct sched_param
21 // {
22 //     int sched_priority;
23 // };
24 // struct sched_attr
25 // {
26 //     uint32_t size;
27 
28 //     uint32_t sched_policy;
29 //     uint64_t sched_flags;
30 
31 //     /* SCHED_NORMAL, SCHED_BATCH */
32 //     int32_t sched_nice;
33 
34 //     /* SCHED_FIFO, SCHED_RR */
35 //     uint32_t sched_priority;
36 
37 //     /* SCHED_DEADLINE */
38 //     uint64_t sched_runtime;
39 //     uint64_t sched_deadline;
40 //     uint64_t sched_period;
41 
42 //     /* Utilization hints */
43 //     uint32_t sched_util_min;
44 //     uint32_t sched_util_max;
45 // };
46 
47 // static int __sched_setscheduler(struct process_control_block *p, const struct sched_attr *attr, bool user, bool pi);
48 // static int _sched_setscheduler(struct process_control_block *p, int policy, const struct sched_param *param,
49 //                                bool check);
50 // /**
51 //  * sched_setscheduler -设置进程的调度策略
52 //  * @param p 需要修改的pcb
53 //  * @param policy 需要设置的policy
54 //  * @param param structure containing the new RT priority. 目前没有用
55 //  *
56 //  * @return 成功返回0,否则返回对应的错误码
57 //  *
58 //  */
59 // int sched_setscheduler(struct process_control_block *p, int policy, const struct sched_param *param);
60 
61 // ================= Rust 实现 =============
62 extern void sched_update_jiffies();
63 extern void sched_init();
64 extern void sched();
65 extern void sched_enqueue(struct process_control_block *pcb);
66 
67 void switch_proc(struct process_control_block *prev, struct process_control_block *proc);
68