os_kernel/kernel/main.c

#include "../lib/kernel/print.h"
#include "debug.h"
#include "init.h"
#include "memory.h"
#include "../thread/thread.h"
#include "interrupt.h"
#include "../device/console.h"
#include "../device/ioqueue.h"
#include "../device/keyboard.h"

void thread_a_func(void *);
void thread_b_func(void *);

int main(void)
{
    put_str("I am kernel\n");
    init_all();
    // asm volatile("sti"); // 使能中断
    // ASSERT(1 == 2);

    // void *addr = get_kernel_pages(4);
    // put_str("\n  get_kernel_page start vaddr is ");
    // put_int((uintptr_t)addr);
    // put_str("\n");

    thread_start("consumer_a", 31, thread_a_func, " A_");
    thread_start("consumer_b", 31, thread_b_func, " B_");

    intr_enable(); // 打开中断，使中断起作用
    // 主线程会一直执行, 直到被中断或被其他线程强制结束
    while (1)
        ;
    // {
    //     console_put_str("Main ");
    // }
    return 0;
}

void thread_a_func(void *arg)
{
    // 用 void 来表示通用类型，这样就可以传递任意类型的参数
    while (1)
    {
        enum intr_status old_status = intr_disable();
        if (!ioq_empty(&keyboard_buf))
        {
            console_put_str(arg);
            char byte = ioq_getchar(&keyboard_buf);
            console_put_char(byte);
        }
        intr_set_status(old_status);
    }
}
void thread_b_func(void *arg)
{
    while (1)
    {
        enum intr_status old_status = intr_disable();
        if (!ioq_empty(&keyboard_buf))
        {
            console_put_str(arg);
            char byte = ioq_getchar(&keyboard_buf);
            console_put_char(byte);
        }
        intr_set_status(old_status);
    }
}