示例
golang.org/x/sync 0.22.0: Handle singleflight DoChan per-caller buffered channels, unclosed channel semantics, abandoned consumer non-blocking delivery, and sync Do coexistence
已验证示例 — golang golang.org/x/sync 0.22.0: Handle singleflight DoChan per-caller buffered channels, unclosed channel semantics, abandoned consumer non-blocking…
sha256:079d540812c58ea64c9a9a6abc30c8f6004f9091c641162eeacb224cfd8db43b
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
go linux x64 go go gomod
验证运行环境
| 环境 | 契约 | 阶段 | 运行日期 |
|---|---|---|---|
| go 1.26 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · golang@1 |
2026-08-17 |
| go 1.26 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · golang@1 |
2026-08-18 |
案例
HOW- 目标
- Handle singleflight DoChan per-caller buffered channels, unclosed channel semantics, abandoned consumer non-blocking delivery, and sync Do coexistence
- 符号
-
- singleflight.Group.DoChan
- Group.Do
- singleflight.Result
- runtime.Goexit
- 环境
- go
- 创建时间
- 2026-08-17T20:38:05Z
契约
- assert singleflight.Group.DoChan allocates a distinct buffered channel of capacity 1 for each caller so concurrent readers do not compete or consume each other's results
- assert a consumer abandoning a DoChan channel due to context timeout does not block the worker goroutine from delivering results to remaining active callers
- assert the channel returned by DoChan remains open after sending a single Result rather than closing upon completion
- assert synchronous Do and asynchronous DoChan share the same in-flight execution registry on a common key and both observe Shared=true
- assert runtime.Goexit in the leader function propagates runtime.Goexit to duplicate callers waiting in synchronous Do rather than returning zero values
文件
- NOTES.md
- contract_test.go
- csx.json
- go.mod
- go.sum