5 rt-thread 僵尸线程怎么销毁，

发布于 2022-08-22 18:24:09 浏览：658 订阅该版

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20220822/2ea08425043ed80781d5a69ce40067c7.png)

rt-thread 僵尸线程怎么 销毁，一直占用资源

thread_play = rt_thread_create("wav_play",thread_wavplay, argv[1],2048, 2, 25);
    /* 启 动 线 程 */
    if (thread_play != RT_NULL) rt_thread_startup(thread_play);

void thread_wavplay(void* parameter)
{
    int fd = -1;
    uint8_t *buffer = NULL;
    struct wav_info *info = NULL;
    struct rt_audio_caps caps = {0};

//fd = open("/sd/sine.wav ", O_RDONLY);
		fd = open( (const char *)( parameter ), O_RDONLY);
    if (fd < 0)
    {
        rt_kprintf("open file failed!\n");
        goto __exit;
    }

buffer = rt_malloc(BUFSZ);

if (buffer == RT_NULL)
        goto __exit;

info = (struct wav_info *) rt_malloc(sizeof * info);
    if (info == RT_NULL)
        goto __exit;

if (read(fd, &(info->header), sizeof(struct RIFF_HEADER_DEF)) <= 0)
        goto __exit;
    if (read(fd, &(info->fmt_block),  sizeof(struct FMT_BLOCK_DEF)) <= 0)
        goto __exit;
    if (read(fd, &(info->data_block), sizeof(struct DATA_BLOCK_DEF)) <= 0)
        goto __exit;

rt_kprintf("wav information:\n");
    rt_kprintf("samplerate %d\n", info->fmt_block.wav_format.SamplesPerSec);
    rt_kprintf("channel %d\n", info->fmt_block.wav_format.Channels);

/* 根据设备名称查找 Audio 设备，获取设备句柄 */
    snd_dev = rt_device_find(SOUND_DEVICE_NAME);

/* 以只写方式打开 Audio 播放设备 */
    rt_device_open(snd_dev, RT_DEVICE_OFLAG_WRONLY);

/* 设置采样率、通道、采样位数等音频参数信息 */
    caps.main_type               = AUDIO_TYPE_OUTPUT;                           /* 输出类型（播放设备 ）*/
    caps.sub_type                = AUDIO_DSP_PARAM;                             /* 设置所有音频参数信息 */
    caps.udata.config.samplerate = info->fmt_block.wav_format.SamplesPerSec;    /* 采样率 */
    caps.udata.config.channels   = info->fmt_block.wav_format.Channels;         /* 采样通道 */
    caps.udata.config.samplebits = 16;                                          /* 采样位数 */
    rt_device_control(snd_dev, AUDIO_CTL_CONFIGURE, &caps);

while (1)
    {
        int length;
			  int i;
        uint16_t *p_buff; //wav 音频数据有符号
			  //int16_t  *p_buff; 
        /* 从文件系统读取 wav 文件的音频数据 */
        length = read(fd, buffer, BUFSZ);		  
			
			  p_buff = (uint16_t *)buffer;
			  
        if (length <= 0)
            break;

/* 向 Audio 设备写入音频数据 */
        rt_device_write(snd_dev, 0, buffer, length);
    }

/* 关闭 Audio 设备 */
    rt_device_close(snd_dev);

__exit:

if (fd >= 0)
        close(fd);

if (buffer)
       rt_free(buffer);

if (info)
        rt_free(info);

return  ;
}

sys workq   23  ready   
tidle0      31  ready 
这2个线程 一直都是  就绪状态， tidle0 应该是一直没执行， sys workq  没用到这个线程

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20220823/8039a0108b251eac532f6001eb3e2a4b.png)