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Merge pull request #1321 from ds797/patch-1
Update crossbeam and pc_keyboard
This commit is contained in:
Philipp Oppermann
GitHub
@@ -654,13 +654,13 @@ extern "x86-interrupt" fn keyboard_interrupt_handler(
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ترجمه کلیدهای دیگر نیز به همین روش کار می کند. خوشبختانه کرت ای با نام [`pc-keyboard`] برای ترجمه اسکنکد مجموعه های اسکنکد 1 و 2 وجود دارد ، بنابراین لازم نیست که خودمان این را پیاده سازی کنیم. برای استفاده از کرت ، آن را به `Cargo.toml` اضافه کرده و در`lib.rs` خود وارد می کنیم:
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[`pc-keyboard`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/
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[`pc-keyboard`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/
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```toml
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# in Cargo.toml
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[dependencies]
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pc-keyboard = "0.5.0"
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pc-keyboard = "0.7.0"
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```
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اکنون میتوانیم از این کرت برای باز نویسی `keyboard_interrupt_handler` استفاده کنیم:
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@@ -677,8 +677,8 @@ extern "x86-interrupt" fn keyboard_interrupt_handler(
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lazy_static! {
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static ref KEYBOARD: Mutex<Keyboard<layouts::Us104Key, ScancodeSet1>> =
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Mutex::new(Keyboard::new(layouts::Us104Key, ScancodeSet1,
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HandleControl::Ignore)
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Mutex::new(Keyboard::new(ScancodeSet1::new(),
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layouts::Us104Key, HandleControl::Ignore)
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);
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}
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@@ -704,17 +704,17 @@ extern "x86-interrupt" fn keyboard_interrupt_handler(
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ما از ماکرو `lazy_static` برای ایجاد یک شی ثابت [`Keyboard`] محافظت شده توسط Mutex استفاده می کنیم. `Keyboard` را با طرح صفحه کلید ایالات متحده و مجموعه اسکن کد 1 مقداردهی می کنیم. پارامتر [`HandleControl`] اجازه می دهد تا `ctrl+[a-z]` را به کاراکتر های `U+0001` تا `U+001A` نگاشت کنیم. ما نمی خواهیم چنین کاری انجام دهیم ، بنابراین از گزینه `Ignore` برای برخورد با `ctrl` مانند کلیدهای عادی استفاده می کنیم.
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[`HandleControl`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/enum.HandleControl.html
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[`HandleControl`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/enum.HandleControl.html
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در هر وقفه ، Mutex را قفل می کنیم ، اسکن کد را از کنترل کننده صفحه کلید می خوانیم و آن را به متد [`add_byte`] منتقل می کنیم ، که اسکن کد را به یک `<Option<KeyEvent` ترجمه می کند. [`KeyEvent`] حاوی كلیدی است كه باعث رویداد شده و آیا این یک رویداد فشردن یا رها کردن بوده است.
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[`Keyboard`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/struct.Keyboard.html
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[`add_byte`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/struct.Keyboard.html#method.add_byte
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[`KeyEvent`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/struct.KeyEvent.html
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[`Keyboard`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/struct.Keyboard.html
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[`add_byte`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/struct.Keyboard.html#method.add_byte
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[`KeyEvent`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/struct.KeyEvent.html
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برای تفسیر این رویداد کلید ، آن را به متد [`process_keyevent`] منتقل می کنیم ، که در صورت امکان رویداد کلید را به یک کاراکتر ترجمه می کند. به عنوان مثال ، بسته به فشردن کلید shift ، یک رویداد فشردن کلید `A` را به یک حرف کوچک `a` یا یک حرف بزرگ `A` ترجمه می کند.
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[`process_keyevent`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/struct.Keyboard.html#method.process_keyevent
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[`process_keyevent`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/struct.Keyboard.html#method.process_keyevent
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با استفاده از این کنترل کننده وقفه اصلاح شده اکنون می توانیم متن بنویسیم:
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@@ -655,13 +655,13 @@ extern "x86-interrupt" fn keyboard_interrupt_handler(
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他の文字も同じように変換することができます。幸運なことに、スキャンコードセットの1と2のスキャンコードを変換するための [`pc-keyboard`] というクレートがありますので、これを自分で実装する必要はありません。このクレートを使うために `Cargo.toml` に以下を追加し、`lib.rs` でインポートしましょう:
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[`pc-keyboard`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/
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[`pc-keyboard`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/
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```toml
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# in Cargo.toml
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[dependencies]
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pc-keyboard = "0.5.0"
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pc-keyboard = "0.7.0"
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```
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これでこのクレートを使って `keyboard_interrupt_handler` を書き直すことができます:
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@@ -678,8 +678,8 @@ extern "x86-interrupt" fn keyboard_interrupt_handler(
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lazy_static! {
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static ref KEYBOARD: Mutex<Keyboard<layouts::Us104Key, ScancodeSet1>> =
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Mutex::new(Keyboard::new(layouts::Us104Key, ScancodeSet1,
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HandleControl::Ignore)
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Mutex::new(Keyboard::new(ScancodeSet1::new(),
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layouts::Us104Key, HandleControl::Ignore)
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);
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}
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@@ -705,17 +705,17 @@ extern "x86-interrupt" fn keyboard_interrupt_handler(
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ミューテックスで保護された静的な [`Keyboard`] オブジェクトを作るために `lazy_static` マクロを使います。`Keyboard` は、レイアウトを US キーボードに、スキャンコードセットは1として初期化を行います。[`HandleControl`] パラメタは、`ctrl+[a-z]` を Unicode 文字の `U+0001` から `U+001A` にマッピングさせることができます。この機能は使いたくないので、`Ignore` オプションを使い `ctrl` キーを通常のキーと同様に扱います。
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[`HandleControl`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/enum.HandleControl.html
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[`HandleControl`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/enum.HandleControl.html
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各割り込みでは、ミューテックスをロックし、キーボードコントローラからスキャンコードを読み取り、それを読み取ったスキャンコードを `Option<KeyEvent>` に変換する [`add_byte`] メソッドに渡します。[`KeyEvent`] は、そのイベントを起こしたキーと、それが押されたのか離されたのかの情報を含んでいます。
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[`Keyboard`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/struct.Keyboard.html
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[`add_byte`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/struct.Keyboard.html#method.add_byte
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[`KeyEvent`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/struct.KeyEvent.html
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[`Keyboard`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/struct.Keyboard.html
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[`add_byte`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/struct.Keyboard.html#method.add_byte
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[`KeyEvent`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/struct.KeyEvent.html
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このキーイベントを解釈するために、変換可能であればキーイベントを文字に変換する [`process_keyevent`] メソッドにキーイベントを渡します。例えば `A` キーの押下イベントを、シフトキーが押されていたかによって小文字の `a` か大文字の `A` に変換します。
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[`process_keyevent`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/struct.Keyboard.html#method.process_keyevent
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[`process_keyevent`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/struct.Keyboard.html#method.process_keyevent
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修正した割り込みハンドラで、テキストが入力できるようになります:
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@@ -655,13 +655,13 @@ extern "x86-interrupt" fn keyboard_interrupt_handler(
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나머지 키를 인식하는 것도 위와 마찬가지 방법으로 진행하면 됩니다. 다행히도, [`pc-keyboard`] 크레이트가 1번/2번 스캔코드 셋을 해석하는 기능을 제공합니다. `Cargo.toml`에 이 크레이트를 추가하고 `lib.rs`에서 불러와 사용합니다.
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[`pc-keyboard`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/
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[`pc-keyboard`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/
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```toml
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# in Cargo.toml
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[dependencies]
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pc-keyboard = "0.5.0"
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pc-keyboard = "0.7.0"
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```
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`pc-keyboard` 크레이트를 사용해 `keyboard_interrupt_handler` 함수를 새로 작성합니다.
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@@ -678,8 +678,8 @@ extern "x86-interrupt" fn keyboard_interrupt_handler(
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lazy_static! {
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static ref KEYBOARD: Mutex<Keyboard<layouts::Us104Key, ScancodeSet1>> =
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Mutex::new(Keyboard::new(layouts::Us104Key, ScancodeSet1,
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HandleControl::Ignore)
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Mutex::new(Keyboard::new(ScancodeSet1::new(),
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layouts::Us104Key, HandleControl::Ignore)
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);
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}
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@@ -705,17 +705,17 @@ extern "x86-interrupt" fn keyboard_interrupt_handler(
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`lazy_static` 매크로를 사용해 Mutex로 감싼 [`Keyboard`] 타입의 static 오브젝트를 얻습니다. `Keyboard`가 미국 키보드 레이아웃과 1번 스캔코드 셋을 사용하도록 초기화합니다. [`HandleControl`] 매개변수를 사용하면 `ctrl+[a-z]` 키 입력을 유니코드 `U+0001`에서 `U+001A`까지 값에 대응시킬 수 있습니다. 우리는 그렇게 하지 않기 위해 해당 매개변수에 `Ignore` 옵션을 주고 `ctrl` 키를 일반 키로서 취급합니다.
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[`HandleControl`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/enum.HandleControl.html
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[`HandleControl`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/enum.HandleControl.html
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인터럽트마다 우리는 Mutex를 잠그고 키보드 컨트롤러로부터 스캔 코드를 읽어온 후, 그 스캔 코드를 [`add_byte`] 함수에 전달합니다. 이 함수는 스캔 코드를 `Option<KeyEvent>`으로 변환합니다. [`KeyEvent`] 타입은 입력된 키의 정보와 키의 누름/뗌 정보를 저장합니다.
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[`Keyboard`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/struct.Keyboard.html
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[`add_byte`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/struct.Keyboard.html#method.add_byte
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[`KeyEvent`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/struct.KeyEvent.html
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[`Keyboard`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/struct.Keyboard.html
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[`add_byte`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/struct.Keyboard.html#method.add_byte
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[`KeyEvent`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/struct.KeyEvent.html
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[`process_keyevent`] 함수가 인자로 받은 `KeyEvent`를 변환하여 입력된 키의 문자를 반환합니다 (변환 불가한 경우 `None` 반환). 예를 들어, `A`키 입력 시 shift키 입력 여부에 따라 소문자 `a` 또는 대문자 `A`를 얻습니다.
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[`process_keyevent`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/struct.Keyboard.html#method.process_keyevent
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[`process_keyevent`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/struct.Keyboard.html#method.process_keyevent
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수정한 인터럽트 처리 함수를 통해 텍스트를 입력한 대로 화면에 출력할 수 있습니다.
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@@ -649,13 +649,13 @@ Now we can write numbers:
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Translating the other keys works in the same way. Fortunately, there is a crate named [`pc-keyboard`] for translating scancodes of scancode sets 1 and 2, so we don't have to implement this ourselves. To use the crate, we add it to our `Cargo.toml` and import it in our `lib.rs`:
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[`pc-keyboard`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/
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[`pc-keyboard`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/
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```toml
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# in Cargo.toml
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[dependencies]
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pc-keyboard = "0.5.0"
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pc-keyboard = "0.7.0"
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```
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Now we can use this crate to rewrite our `keyboard_interrupt_handler`:
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@@ -672,8 +672,8 @@ extern "x86-interrupt" fn keyboard_interrupt_handler(
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lazy_static! {
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static ref KEYBOARD: Mutex<Keyboard<layouts::Us104Key, ScancodeSet1>> =
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Mutex::new(Keyboard::new(layouts::Us104Key, ScancodeSet1,
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HandleControl::Ignore)
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Mutex::new(Keyboard::new(ScancodeSet1::new(),
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layouts::Us104Key, HandleControl::Ignore)
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);
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}
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@@ -699,17 +699,17 @@ extern "x86-interrupt" fn keyboard_interrupt_handler(
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We use the `lazy_static` macro to create a static [`Keyboard`] object protected by a Mutex. We initialize the `Keyboard` with a US keyboard layout and the scancode set 1. The [`HandleControl`] parameter allows to map `ctrl+[a-z]` to the Unicode characters `U+0001` through `U+001A`. We don't want to do that, so we use the `Ignore` option to handle the `ctrl` like normal keys.
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[`HandleControl`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/enum.HandleControl.html
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[`HandleControl`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/enum.HandleControl.html
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On each interrupt, we lock the Mutex, read the scancode from the keyboard controller, and pass it to the [`add_byte`] method, which translates the scancode into an `Option<KeyEvent>`. The [`KeyEvent`] contains the key which caused the event and whether it was a press or release event.
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[`Keyboard`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/struct.Keyboard.html
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[`add_byte`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/struct.Keyboard.html#method.add_byte
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[`KeyEvent`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/struct.KeyEvent.html
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[`Keyboard`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/struct.Keyboard.html
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[`add_byte`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/struct.Keyboard.html#method.add_byte
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[`KeyEvent`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/struct.KeyEvent.html
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To interpret this key event, we pass it to the [`process_keyevent`] method, which translates the key event to a character, if possible. For example, it translates a press event of the `A` key to either a lowercase `a` character or an uppercase `A` character, depending on whether the shift key was pressed.
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[`process_keyevent`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/struct.Keyboard.html#method.process_keyevent
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[`process_keyevent`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/struct.Keyboard.html#method.process_keyevent
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With this modified interrupt handler, we can now write text:
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@@ -655,13 +655,13 @@ extern "x86-interrupt" fn keyboard_interrupt_handler(
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其他扫描码也可以通过同样的手段进行译码，不过真的很麻烦，好在 [`pc-keyboard`] crate 已经帮助我们实现了Set-1和Set-2的译码工作，所以无需自己去实现。所以我们只需要将下述内容添加到 `Cargo.toml`，并在 `lib.rs` 里进行引用：
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[`pc-keyboard`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/
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[`pc-keyboard`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/
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```toml
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# in Cargo.toml
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[dependencies]
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pc-keyboard = "0.5.0"
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pc-keyboard = "0.7.0"
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```
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现在我们可以使用新的crate对 `keyboard_interrupt_handler` 进行改写：
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@@ -678,8 +678,8 @@ extern "x86-interrupt" fn keyboard_interrupt_handler(
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lazy_static! {
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static ref KEYBOARD: Mutex<Keyboard<layouts::Us104Key, ScancodeSet1>> =
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Mutex::new(Keyboard::new(layouts::Us104Key, ScancodeSet1,
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HandleControl::Ignore)
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Mutex::new(Keyboard::new(ScancodeSet1::new(),
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layouts::Us104Key, HandleControl::Ignore)
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);
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}
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@@ -705,17 +705,17 @@ extern "x86-interrupt" fn keyboard_interrupt_handler(
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首先我们使用 `lazy_static` 宏创建一个受到Mutex同步锁保护的 [`Keyboard`] 对象，初始化参数为美式键盘布局以及Set-1。至于 [`HandleControl`]，它可以设定为将 `ctrl+[a-z]` 映射为Unicode字符 `U+0001` 至 `U+001A`，但我们不想这样，所以使用了 `Ignore` 选项让 `ctrl` 仅仅表现为一个正常键位。
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[`HandleControl`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/enum.HandleControl.html
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[`HandleControl`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/enum.HandleControl.html
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|
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对于每一个中断，我们都会为 KEYBOARD 加锁，从键盘控制器获取扫描码并将其传入 [`add_byte`] 函数，并将其转化为 `Option<KeyEvent>` 结构。[`KeyEvent`] 包括了触发本次中断的按键信息，以及子动作是按下还是释放。
|
||||
|
||||
[`Keyboard`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/struct.Keyboard.html
|
||||
[`add_byte`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/struct.Keyboard.html#method.add_byte
|
||||
[`KeyEvent`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/struct.KeyEvent.html
|
||||
[`Keyboard`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/struct.Keyboard.html
|
||||
[`add_byte`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/struct.Keyboard.html#method.add_byte
|
||||
[`KeyEvent`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/struct.KeyEvent.html
|
||||
|
||||
要处理KeyEvent，我们还需要将其传入 [`process_keyevent`] 函数，将其转换为人类可读的字符，若果有必要，也会对字符进行一些处理。典型例子就是，要判断 `A` 键按下后输入的是小写 `a` 还是大写 `A`，这要取决于shift键是否同时被按下。
|
||||
|
||||
[`process_keyevent`]: https://docs.rs/pc-keyboard/0.5.0/pc_keyboard/struct.Keyboard.html#method.process_keyevent
|
||||
[`process_keyevent`]: https://docs.rs/pc-keyboard/0.7.0/pc_keyboard/struct.Keyboard.html#method.process_keyevent
|
||||
|
||||
进行这些修改之后，我们就可以正常输入英文了：
|
||||
|
||||
|
||||
@@ -1363,8 +1363,8 @@ use crate::print;
|
||||
|
||||
pub async fn print_keypresses() {
|
||||
let mut scancodes = ScancodeStream::new();
|
||||
let mut keyboard = Keyboard::new(layouts::Us104Key, ScancodeSet1,
|
||||
HandleControl::Ignore);
|
||||
let mut keyboard = Keyboard::new(ScancodeSet1::new(),
|
||||
layouts::Us104Key, HandleControl::Ignore);
|
||||
|
||||
while let Some(scancode) = scancodes.next().await {
|
||||
if let Ok(Some(key_event)) = keyboard.add_byte(scancode) {
|
||||
|
||||
@@ -1055,7 +1055,7 @@ To use the type, we need to add a dependency on the `crossbeam-queue` crate:
|
||||
# in Cargo.toml
|
||||
|
||||
[dependencies.crossbeam-queue]
|
||||
version = "0.2.1"
|
||||
version = "0.3.11"
|
||||
default-features = false
|
||||
features = ["alloc"]
|
||||
```
|
||||
@@ -1233,8 +1233,8 @@ impl Stream for ScancodeStream {
|
||||
fn poll_next(self: Pin<&mut Self>, cx: &mut Context) -> Poll<Option<u8>> {
|
||||
let queue = SCANCODE_QUEUE.try_get().expect("not initialized");
|
||||
match queue.pop() {
|
||||
Ok(scancode) => Poll::Ready(Some(scancode)),
|
||||
Err(crossbeam_queue::PopError) => Poll::Pending,
|
||||
Some(scancode) => Poll::Ready(Some(scancode)),
|
||||
None => Poll::Pending,
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -1284,17 +1284,17 @@ impl Stream for ScancodeStream {
|
||||
.expect("scancode queue not initialized");
|
||||
|
||||
// fast path
|
||||
if let Ok(scancode) = queue.pop() {
|
||||
if let Some(scancode) = queue.pop() {
|
||||
return Poll::Ready(Some(scancode));
|
||||
}
|
||||
|
||||
WAKER.register(&cx.waker());
|
||||
match queue.pop() {
|
||||
Ok(scancode) => {
|
||||
Some(scancode) => {
|
||||
WAKER.take();
|
||||
Poll::Ready(Some(scancode))
|
||||
}
|
||||
Err(crossbeam_queue::PopError) => Poll::Pending,
|
||||
None => Poll::Pending,
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -1350,8 +1350,8 @@ use crate::print;
|
||||
|
||||
pub async fn print_keypresses() {
|
||||
let mut scancodes = ScancodeStream::new();
|
||||
let mut keyboard = Keyboard::new(layouts::Us104Key, ScancodeSet1,
|
||||
HandleControl::Ignore);
|
||||
let mut keyboard = Keyboard::new(ScancodeSet1::new(),
|
||||
layouts::Us104Key, HandleControl::Ignore);
|
||||
|
||||
while let Some(scancode) = scancodes.next().await {
|
||||
if let Ok(Some(key_event)) = keyboard.add_byte(scancode) {
|
||||
@@ -1546,7 +1546,7 @@ impl Executor {
|
||||
waker_cache,
|
||||
} = self;
|
||||
|
||||
while let Ok(task_id) = task_queue.pop() {
|
||||
while let Some(task_id) = task_queue.pop() {
|
||||
let task = match tasks.get_mut(&task_id) {
|
||||
Some(task) => task,
|
||||
None => continue, // task no longer exists
|
||||
|
||||
Reference in New Issue
Block a user