Sample
tokio 1.53.1: Multiple notify_one calls on Tokio Notify store at most one permit when no waiters are present, while notify_waiters stores zero permits and wakes all registered waiters simultaneously
Verified sample for cargo tokio 1.53.1: Multiple notify_one calls on Tokio Notify store at most one permit when no waiters are present, while notify_waiters…
sha256:c481ed69af122f0e0a6296cd18ec1943aa3d391eb4058e3c1e4616b0ce9ceb6d
This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 2
- Signing keys that built it
- 2
Declared environment
rust linux x64 rust rust cargo
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| rust 1 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · cargo@1 |
2026-08-17 |
| rust 1 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · cargo@1 |
2026-08-18 |
Case
HOW- Goal
- Multiple notify_one calls on Tokio Notify store at most one permit when no waiters are present, while notify_waiters stores zero permits and wakes all registered waiters simultaneously
- Packages
- Symbols
-
- tokio::sync::Notify::notify_one
- tokio::sync::Notify::notified
- tokio::sync::Notify::notify_waiters
- Environment
- rust
- Created
- 2026-08-17T14:42:39Z
Contract
- Calling notify_one multiple times on Tokio Notify when no tasks are waiting stores at most one permit, so only the first subsequent notified future completes immediately while subsequent futures remain pending
- Calling notify_waiters when no tasks are waiting stores zero permits, leaving subsequent notified futures pending
- Calling notify_waiters wakes all currently registered waiting futures simultaneously
- Calling notify_one wakes exactly one registered waiting future while leaving other registered waiters pending
Files
- Cargo.lock
- Cargo.toml
- NOTES.md
- csx.json
- src/lib.rs