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"
#include "../userprog/process.h"
#include "../userprog/syscall-init.h"
#include "../lib/user/syscall.h"

void kernel_thread_a_func(void *);
void kernel_thread_b_func(void *);
void user_prog_a(void *);
void user_prog_b(void *);

int test_var_a = 0, test_var_b = 0;
int prog_a_pid = 0, prog_b_pid = 0;

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");

    process_execute(user_prog_a, "user_prog_a");
    // process_execute(user_prog_b, "user_prog_b");

    intr_enable(); // 打开中断，使中断起作用
    console_put_str(" main_pid:0x");
    console_put_int(sys_getpid());
    console_put_str("\n");

    thread_start("kernel_thread_a_func", 31, kernel_thread_a_func, "argA ");
    thread_start("kernel_thread_a_func", 31, kernel_thread_b_func, "argB ");
    // 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)
        ;
    return 0;
}

/*在线程中运行的函数*/
void kernel_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
    char *para = arg;
    console_put_str(" thread_a_pid:0x");
    console_put_int(sys_getpid());
    console_put_char('\n');
    console_put_str(" prog_a_pid:0x");
    console_put_int(prog_a_pid);
    console_put_char('\n');
}
void kernel_thread_b_func(void *arg)
{
    char *para = arg;
    console_put_str(" thread_b_pid:0x");
    console_put_int(sys_getpid());
    console_put_char('\n');
    console_put_str(" prog_b_pid:0x");
    console_put_int(prog_b_pid);
    console_put_char('\n');
}

/*测试用户进程*/
void user_prog_a(void *UNUSED(arg))
{
    prog_a_pid = getpid();
    while (1)
        ;
}
void user_prog_b(void *UNUSED(arg))
{
    prog_b_pid = getpid();
    while (1)
        ;
}