Decision Workspace
atomic-maybe-uninit vs arc-swap vs portable-atomic
Side-by-side comparison of Rust crates
50
atomic-maybe-uninit
growingv0.3.17
Atomic operations on potentially uninitialized integers.
73
arc-swap
stablev1.9.0
Atomically swappable Arc
69
portable-atomic
stablev1.13.1
Portable atomic types including support for 128-bit atomics, atomic float, etc.
Core Metrics
| atomic-maybe-uninit | arc-swap | portable-atomic | |
|---|---|---|---|
| Health Score | 50 | 73 | 69 |
| Total Downloads | 88.4K | 193.4M | 229.7M |
| 30d Downloads | 3.0K | 14.5M | 23.3M |
| Dependents | 7 | 8.8K | 1.9K |
| Releases | 42 | 45 | 52 |
| Last Updated | 16d ago | 6d ago | 13d ago |
| Age | 4y | 7y 11m | 4y 1m |
Health Breakdown
atomic-maybe-uninit
Maintenance
18
Quality
7
Community
7
Popularity
6
Documentation
12
arc-swap
Maintenance
18
Quality
16
Community
19
Popularity
8
Documentation
12
portable-atomic
Maintenance
18
Quality
18
Community
14
Popularity
8
Documentation
11
Technical Details
| atomic-maybe-uninit | arc-swap | portable-atomic | |
|---|---|---|---|
| Version | 0.3.17 | 1.9.0 | 1.13.1 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✓ Yes |
| License | Apache-2.0 OR MIT | MIT OR Apache-2.0 | Apache-2.0 OR MIT |
| Dependencies | 4 | 12 | 13 |
| Crate Size | 123KB | 81KB | 197KB |
| Features | 0 | 4 | 10 |
| Yanked % | 64.3% | 17.8% | 9.6% |
| Edition | 2021 | 2018 | 2018 |
| MSRV | 1.74 | — | 1.34 |
| Owners | 1 | 2 (team) | 1 |
Links
Quick Verdict
- •arc-swap leads with a health score of 73/100, but none of the options score above 80.
- •portable-atomic has the most downloads (229.7M), suggesting wider adoption.
- •arc-swap is depended on by 8.8K crates — strongest ecosystem trust.
- •atomic-maybe-uninit is pre-1.0 — API may change.