线程中的延时函数的问题

#include <rtthread.h>
#define THREAD_STACK_SIZE   1024
#define THREAD_PRIORITY     20
#define THREAD_TIMESLICE    10
/* 线程入口 */
static void thread1_entry(void* parameter)
{
    rt_uint32_t count = 0;
    while (1)
    {
        count++;
        rt_kprintf("thread1: %d \n",count);
        if(count>200){
            break;
        }
        rt_thread_delay(1000);
     }
}
static void thread2_entry(void* parameter)
{
    rt_uint32_t count = 200;
    while (1)
    {
        count++;
        rt_kprintf("thread2: %d \n",count);
        if(count>400){
            break;
        }
        rt_thread_delay(2000);
     }
}
int main(void)
{
    rt_thread_t tid = RT_NULL;
    /* 创建线程 1 */
    tid = rt_thread_create("thread1",
                            thread1_entry, (void*)1,
                            THREAD_STACK_SIZE,
                            THREAD_PRIORITY, 5);//单次最大允许5ms
    if (tid != RT_NULL)
        rt_thread_startup(tid);
    /* 创建线程 2 */
    tid = rt_thread_create("thread2",
                            thread2_entry, (void*)2,
                            THREAD_STACK_SIZE,
                            THREAD_PRIORITY, 1); //单次最大允许允许1ms
    if (tid != RT_NULL)
        rt_thread_startup(tid);
    return 0;
}