202 lines
5.4 KiB
C
Executable File
202 lines
5.4 KiB
C
Executable File
/**
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* @file thread.h
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* @author ATShining (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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#include <thread_arch.h>
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#include <atomics.h>
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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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#define THREAD_MSG_BUG_LEN CONFIG_THREAD_MSG_BUG_LEN //!< 最小的消息寄存器大小
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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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#define IPC_MSG_SIZE CONFIG_THREAD_IPC_MSG_LEN
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#define MAP_BUF_SIZE CONFIG_THREAD_MAP_BUF_LEN
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#define IPC_USER_SIZE 12
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#if (IPC_MSG_SIZE + MAP_BUF_SIZE + IPC_USER_SIZE) > THREAD_MSG_BUG_LEN
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#error "IPC MSG len error."
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#endif
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typedef struct ipc_msg
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{
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union
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{
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struct
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{
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umword_t msg_buf[IPC_MSG_SIZE / WORD_BYTES];
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umword_t map_buf[MAP_BUF_SIZE / WORD_BYTES];
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umword_t user[IPC_USER_SIZE / WORD_BYTES];
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};
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uint8_t data[THREAD_MSG_BUG_LEN];
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};
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} ipc_msg_t;
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typedef union ipc_timeout
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{
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umword_t raw;
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struct
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{
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uhmword_t send_timeout;
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uhmword_t recv_timeout;
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};
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} ipc_timeout_t;
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static inline ipc_timeout_t ipc_timeout_create2(uhmword_t send_timeout, uhmword_t recv_timeout)
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{
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return (ipc_timeout_t){
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.send_timeout = send_timeout,
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.recv_timeout = recv_timeout,
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};
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}
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static inline ipc_timeout_t ipc_timeout_create(umword_t raw)
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{
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return (ipc_timeout_t){
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.raw = raw,
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};
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}
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enum thread_state
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{
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THREAD_IDLE = 0, //!< 空闲状态
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THREAD_DEAD = 1, //!< 死亡状态
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THREAD_SUSPEND = 2, //!< 只有接收和发送ipc消息时才能挂起
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THREAD_READY = 3, //!< 在就绪队列中
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THREAD_TODEAD = 4, //!< 该标志标志线程马上要死亡了，执行完必要操作后，进入THREAD_DEAD状态
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};
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enum thread_ipc_state
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{
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THREAD_NONE,
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THREAD_SEND,
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THREAD_RECV,
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THREAD_WAIT,
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THREAD_TIMEOUT,
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THREAD_IPC_ABORT,
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};
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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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#if IS_ENABLED(CONFIG_MMU)
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void *umsg; //!< 消息对应的内核的地址
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#endif
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msg_tag_t tag; //!< 存放发送的临时标识
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} msg_buf_t;
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#define THREAD_MAGIC 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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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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slist_head_t futex_node; //!< futex使用
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#if IS_ENABLED(CONFIG_SMP)
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ipi_msg_t ipi_msg_node;
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#endif
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int cpu;
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atomic_t time_count;
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umword_t time_count_last;
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spinlock_t ipc_lock;
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msg_buf_t msg; //!< 每个线程独有的消息缓存区
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slist_head_t wait_send_head; //!< 等待头，那些节点等待给当前线程发送数据
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spinlock_t wait_send_head_lock; //!< 等待锁
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thread_t *last_send_th; //!< 当前线程上次接收到谁的数据
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kobject_t *ipc_kobj; //!< 发送者放到一个ipc对象中
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umword_t user_id; //!< 接收到的user_id
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enum thread_state status; //!< 线程状态
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enum thread_ipc_state ipc_status; //!< ipc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_buf(thread_t *th, void *msg, void *umsg)
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{
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th->msg.msg = msg;
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#if IS_ENABLED(CONFIG_MMU)
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th->msg.umsg = umsg;
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#endif
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}
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static inline void *thread_get_msg_buf(thread_t *th)
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{
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#if IS_ENABLED(CONFIG_MMU)
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return th->msg.umsg;
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#else
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return th->msg.msg;
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#endif
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}
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static inline void *thread_get_kmsg_buf(thread_t *th)
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{
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return th->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_task(thread_t *th);
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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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bool_t thread_sched(bool_t is_sche);
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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);
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void thread_ready_remote(thread_t *th, bool_t is_sche);
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void thread_suspend_sw(thread_t *th, bool_t is_sche);
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void thread_timeout_check(ssize_t tick);
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msg_tag_t thread_do_ipc(kobject_t *kobj, entry_frame_t *f, umword_t user_id);
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int thread_ipc_call(thread_t *to_th, msg_tag_t in_tag, msg_tag_t *ret_tag,
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ipc_timeout_t timout, umword_t *ret_user_id, bool_t is_call);
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