121 lines
3.2 KiB
C
Executable File
121 lines
3.2 KiB
C
Executable File
/**
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* @file thread.h
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* @author zhangzheng (1358745329@qq.com)
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* @brief
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* @version 0.1
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* @date 2023-09-14
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*
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* @copyright Copyright (c) 2023
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*
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*/
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#pragma once
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#include "kobject.h"
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#include "scheduler.h"
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#include "util.h"
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#include "arch.h"
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#include "ref.h"
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#define THREAD_BLOCK_SIZE 0x400 //!< 线程块大小，栈在块的顶部
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struct task;
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typedef struct task task_t;
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struct thread;
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typedef struct thread thread_t;
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enum thread_state
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{
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THREAD_IDLE,
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THREAD_DEAD,
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THREAD_SUSPEND, //!< 只有接收和发送ipc消息时才能挂起
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THREAD_READY,
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THREAD_TODEAD, //!< 该标志标志线程马上要死亡了，应该立刻停止操作
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};
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typedef struct
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{
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umword_t rg0[4]; //!< r0-r3
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umword_t r12;
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umword_t lr;
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umword_t pc;
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umword_t xpsr;
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} pf_s_t;
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typedef struct pf
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{
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umword_t rg1[8]; //!< r4-r11
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pf_s_t pf_s;
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} pf_t;
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typedef struct sp_info
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{
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void *user_sp; //!< 用户态的sp
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void *knl_sp; //!< 内核sp
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mword_t sp_type; //!< 使用的栈类型
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} sp_info_t;
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#define THREAD_MSG_BUG_LEN 128UL //!< 默认的消息寄存器大小
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#define MSG_BUF_HAS_DATA_FLAGS 0x01U //!< 已经有数据了
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#define MSG_BUF_RECV_R_FLAGS 0x02U //!< 接收来自recv_th的消息
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#define MSG_BUF_REPLY_FLAGS 0x04U //!< 回复消息给send_th
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typedef struct msg_buf
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{
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void *msg; //!< buf，长度是固定的 @see THREAD_MSG_BUG_LEN
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// uint8_t len; //!< 这里不是buf的大小，而是存储接收或者发送的长度
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msg_tag_t tag;
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} msg_buf_t;
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#define THREAD_MAIGC 0xdeadead //!< 用于栈溢出检测
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typedef struct thread
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{
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kobject_t kobj; //!< 内核对象节点
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// slist_head_t wait; //!< 用于等待队列
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sched_t sche; //!< 调度节点
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kobject_t *task; //!< 绑定的task
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sp_info_t sp; //!< sp信息
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ram_limit_t *lim; //!< 内存限制
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ref_counter_t ref; //!< 引用计数
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msg_buf_t msg; //!< 每个线程独有的消息缓存区
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enum thread_state status; //!< 线程状态
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umword_t magic; //!< maigc
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} thread_t;
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static inline void thread_set_msg_bug(thread_t *th, void *msg)
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{
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th->msg.msg = msg;
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}
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static inline enum thread_state thread_get_status(thread_t *th)
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{
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return th->status;
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}
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static inline pf_t *thread_get_pf(thread_t *th)
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{
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uint8_t *bottom = (uint8_t *)th;
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return ((pf_t *)(bottom + THREAD_BLOCK_SIZE)) - 1;
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}
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static inline thread_t *thread_get_current(void)
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{
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umword_t sp = arch_get_sp();
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thread_t *th = (thread_t *)(ALIGN_DOWN(sp, THREAD_BLOCK_SIZE));
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return th;
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}
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task_t *thread_get_current_task(void);
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task_t *thread_get_bind_task(thread_t *th);
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static inline pf_t *thread_get_current_pf(void)
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{
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return thread_get_pf(thread_get_current());
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}
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void thread_init(thread_t *th, ram_limit_t *lim);
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void thread_set_exc_regs(thread_t *th, umword_t pc, umword_t user_sp, umword_t ram, umword_t stack);
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thread_t *thread_create(ram_limit_t *ram);
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void thread_bind(thread_t *th, kobject_t *tk);
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void thread_unbind(thread_t *th);
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void thread_send_wait(thread_t *th);
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void thread_sched(void);
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void thread_suspend(thread_t *th);
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void thread_dead(thread_t *th);
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void thread_todead(thread_t *th, bool_t is_sche);
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void thread_ready(thread_t *th, bool_t is_sche); |