CoolPotOS/include/task.h

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#ifndef CRASHPOWEROS_TASK_H
#define CRASHPOWEROS_TASK_H
#include "memory.h"
typedef
enum task_state {
TASK_UNINIT = 0, // 未初始化
TASK_SLEEPING = 1, // 睡眠中
TASK_RUNNABLE = 2, // 可运行(也许正在运行)
TASK_ZOMBIE = 3, // 僵尸状态
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TASK_DEATH = 4 // 终止状态
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} task_state;
struct context {
uint32_t esp;
uint32_t ebp;
uint32_t ebx;
uint32_t esi;
uint32_t edi;
uint32_t eflags;
};
// 进程控制块 PCB
struct task_struct {
volatile task_state state; // 进程当前状态
int pid; // 进程标识符
char *name; // 进程名
void *stack; // 进程的内核栈地址
page_directory_t *pgd_dir; // 进程页表
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struct context context; // 上下文信息
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struct task_struct *next; // 链表指针
};
int32_t kernel_thread(int (*fn)(void *), void *arg, char *name);
void kthread_exit();
void print_proc();
void init_sched();
void schedule();
void change_task_to(struct task_struct *next);
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void task_kill(int pid);
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void kill_all_task();
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#endif //CRASHPOWEROS_TASK_H