2019-10-09 10:16:54 +08:00
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## tk\_ostream\_buffered\_t
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### 概述
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2019-11-15 11:33:43 +08:00
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先将数据写入一个缓存区，调用flush时才真正写入底层的ostream。
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2019-10-09 10:16:54 +08:00
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----------------------------------
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### 函数
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<p id="tk_ostream_buffered_t_methods">
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| 函数名称 | 说明 |
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| -------- | ------------ |
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2019-12-14 13:25:56 +08:00
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| <a href="#tk_ostream_buffered_t_tk_ostream_buffered_create">tk\_ostream\_buffered\_create</a> | 创建ostream对象。 |
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2019-11-15 11:33:43 +08:00
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| <a href="#tk_ostream_buffered_t_tk_ostream_buffered_get_size">tk\_ostream\_buffered\_get\_size</a> | 获取当前缓存数据的长度。 |
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2019-10-09 10:16:54 +08:00
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#### tk\_ostream\_buffered\_create 函数
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-----------------------
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* 函数功能：
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2019-12-14 13:25:56 +08:00
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> <p id="tk_ostream_buffered_t_tk_ostream_buffered_create">创建ostream对象。
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本函数自动增加real_ostream的引用计数。
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2019-10-09 10:16:54 +08:00
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* 函数原型：
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```
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tk_ostream_t* tk_ostream_buffered_create (tk_ostream_t* real_ostream);
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```
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* 参数说明：
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| 参数 | 类型 | 说明 |
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| -------- | ----- | --------- |
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| 返回值 | tk\_ostream\_t* | 返回ostream对象。 |
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| real\_ostream | tk\_ostream\_t* | 实际的ostream对象。 |
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#### tk\_ostream\_buffered\_get\_size 函数
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-----------------------
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* 函数功能：
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2019-11-15 11:33:43 +08:00
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> <p id="tk_ostream_buffered_t_tk_ostream_buffered_get_size">获取当前缓存数据的长度。
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2019-10-09 10:16:54 +08:00
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* 函数原型：
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```
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uint32_t tk_ostream_buffered_get_size (tk_ostream_t* ostream);
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```
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* 参数说明：
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| 参数 | 类型 | 说明 |
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| -------- | ----- | --------- |
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| 返回值 | uint32\_t | 返回缓存数据的长度。 |
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| ostream | tk\_ostream\_t* | ostream对象。 |
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