capric 最近的时间轴更新 capric 最近的时间轴更新 |
capricV2EX 第 228267 号会员，加入于 2017-04-29 07:50:15 +08:00今日活跃度排名 12749 |
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6 天前 回复了 bli22ard 创建的主题 › Rust › rust TcpStream 为什么设计读写一体 |
@bli22ard 实现在这里，就是很简单的 Arc 和 clone
```rust
/// Owned read half of a [`TcpStream`], created by [`into_split`].
///
/// Reading from an `OwnedReadHalf` is usually done using the convenience methods found
/// on the [`AsyncReadExt`] trait.
///
/// [`TcpStream`]: TcpStream
/// [`into_split`]: TcpStream::into_split()
/// [`AsyncReadExt`]: trait@crate::io::AsyncReadExt
#[derive(Debug)]
pub struct OwnedReadHalf {
inner: Arc<TcpStream>,
}
/// Owned write half of a [`TcpStream`], created by [`into_split`].
///
/// Note that in the [`AsyncWrite`] implementation of this type, [`poll_shutdown`] will
/// shut down the TCP stream in the write direction. Dropping the write half
/// will also shut down the write half of the TCP stream.
///
/// Writing to an `OwnedWriteHalf` is usually done using the convenience methods found
/// on the [`AsyncWriteExt`] trait.
///
/// [`TcpStream`]: TcpStream
/// [`into_split`]: TcpStream::into_split()
/// [`AsyncWrite`]: trait@crate::io::AsyncWrite
/// [`poll_shutdown`]: fn@crate::io::AsyncWrite::poll_shutdown
/// [`AsyncWriteExt`]: trait@crate::io::AsyncWriteExt
#[derive(Debug)]
pub struct OwnedWriteHalf {
inner: Arc<TcpStream>,
shutdown_on_drop: bool,
}
pub(crate) fn split_owned(stream: TcpStream) -> (OwnedReadHalf, OwnedWriteHalf) {
let arc = Arc::new(stream);
let read = OwnedReadHalf {
inner: Arc::clone(&arc),
};
let write = OwnedWriteHalf {
inner: arc,
shutdown_on_drop: true,
};
(read, write)
}
```
```rust
/// Owned read half of a [`TcpStream`], created by [`into_split`].
///
/// Reading from an `OwnedReadHalf` is usually done using the convenience methods found
/// on the [`AsyncReadExt`] trait.
///
/// [`TcpStream`]: TcpStream
/// [`into_split`]: TcpStream::into_split()
/// [`AsyncReadExt`]: trait@crate::io::AsyncReadExt
#[derive(Debug)]
pub struct OwnedReadHalf {
inner: Arc<TcpStream>,
}
/// Owned write half of a [`TcpStream`], created by [`into_split`].
///
/// Note that in the [`AsyncWrite`] implementation of this type, [`poll_shutdown`] will
/// shut down the TCP stream in the write direction. Dropping the write half
/// will also shut down the write half of the TCP stream.
///
/// Writing to an `OwnedWriteHalf` is usually done using the convenience methods found
/// on the [`AsyncWriteExt`] trait.
///
/// [`TcpStream`]: TcpStream
/// [`into_split`]: TcpStream::into_split()
/// [`AsyncWrite`]: trait@crate::io::AsyncWrite
/// [`poll_shutdown`]: fn@crate::io::AsyncWrite::poll_shutdown
/// [`AsyncWriteExt`]: trait@crate::io::AsyncWriteExt
#[derive(Debug)]
pub struct OwnedWriteHalf {
inner: Arc<TcpStream>,
shutdown_on_drop: bool,
}
pub(crate) fn split_owned(stream: TcpStream) -> (OwnedReadHalf, OwnedWriteHalf) {
let arc = Arc::new(stream);
let read = OwnedReadHalf {
inner: Arc::clone(&arc),
};
let write = OwnedWriteHalf {
inner: arc,
shutdown_on_drop: true,
};
(read, write)
}
```
7 天前 回复了 bli22ard 创建的主题 › Rust › rust TcpStream 为什么设计读写一体 |
39 天前 回复了 7911364440 创建的主题 › Windows › windows 怎么永久关闭自动更新 |
39 天前 回复了 Ritr 创建的主题 › 程序员 › 我想请教一下，如何发送鼠标或者键盘事件 |
你点击控件成功之后，给 A 窗口发送最小化消息 SendMessage(HWND, SC_MINIMIZE)就可以了吧
91 天前 回复了 KaynW 创建的主题 › 摄影 › 家用照片打印机有推荐的吗 |
@capric 6, 8, 10, A4 的相纸都支持，调整进纸仓的卡扣就行
91 天前 回复了 KaynW 创建的主题 › 摄影 › 家用照片打印机有推荐的吗 |
我家用惠普 4160L 喷墨自动双面，打 7 寸彩色照片或者 1 寸证件都很不能，咸鱼上收的，400-500 块，连供墨仓，墨水买兼容的，很便宜
95 天前 回复了 clevertension 创建的主题 › Python › 用 yolo 做实时视频检测, 摄像头接入超过 3 路， Python 内存占用就飙高，请问有没有解决办法? |
@clevertension 你这个 rtmp 是实时流吗，如果是实时流，一般只有 25/30/60 几种，不会有 7600 那么高，你统计出来 7600 fps ，应该绝大多数 frame 都是 None 。另外可以用 multiprocessing 和 queue 分发。
96 天前 回复了 clevertension 创建的主题 › Python › 用 yolo 做实时视频检测, 摄像头接入超过 3 路， Python 内存占用就飙高，请问有没有解决办法? |
@capric 还需要重新编译 opencv ，https://blog.csdn.net/jiexijihe945/article/details/125084488
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