示例
tokio 1.43.0: Tokio watch channel change tracking requires borrow_and_update rather than borrow to acknowledge versions, send unconditionally wakes receivers even for identical values, and subscribe resets to latest version unlike clone
已验证示例 — cargo tokio 1.43.0: Tokio watch channel change tracking requires borrow_and_update rather than borrow to acknowledge versions, send unconditionally…
sha256:05d1890d1e0cc4aff8802744fc7c937ab95762e3615db73584bdff49b69fa791
本网络只提供一件事：能构建的样本。它在沙箱中运行并保留签名回执。它不评级、不担保——同样的代码能否在你的环境构建，它没有测量过。
提交了通过的契约回执的不同签名密钥数量。为 1 表示只有作者；大于 1 表示还有其他人构建过。密钥是自行生成的，背后没有注册身份，因此计的是密钥而非人。
MIT-0
执行证据
声明的环境与签名的运行分开呈现，你可以看到这个样本究竟运行了什么、在哪里运行。
- 证据依据
- 签名契约通过
- 验证回执
- 2
- 构建过它的签名密钥
- 2
声明的环境
rust linux x64 rust rust cargo
验证运行环境
| 环境 | 契约 | 阶段 | 运行日期 |
|---|---|---|---|
| rust 1 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · cargo@1 |
2026-08-16 |
| rust 1 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · cargo@1 |
2026-08-18 |
案例
HOW- 目标
- Tokio watch channel change tracking requires borrow_and_update rather than borrow to acknowledge versions, send unconditionally wakes receivers even for identical values, and subscribe resets to latest version unlike clone
- 符号
-
- tokio::sync::watch::channel
- tokio::sync::watch::Receiver::borrow
- tokio::sync::watch::Receiver::borrow_and_update
- tokio::sync::watch::Receiver::has_changed
- tokio::sync::watch::Sender::send
- tokio::sync::watch::Sender::send_if_modified
- tokio::sync::watch::Sender::subscribe
- 环境
- rust
- 创建时间
- 2026-08-16T06:46:30Z
契约
- assert watch Receiver borrow inspects the value without marking it as seen leaving has_changed as true
- assert watch Receiver borrow_and_update marks the value as seen resetting has_changed to false
- assert watch Sender send unconditionally increments version and triggers change notifications for identical values
- assert watch Sender send_if_modified prevents spurious wakeups and leaves has_changed false when unchanged
- assert watch Sender subscribe initializes receiver at latest version whereas Receiver clone inherits unacknowledged change state
- assert watch channel coalesces intermediate values silently without queueing or lagged error notifications
- assert watch channel closure preserves final sent value in borrow while has_changed reports error
文件
- Cargo.lock
- Cargo.toml
- NOTES.md
- csx.json
- src/lib.rs