1use thiserror::Error;
2
3#[derive(Error, Debug)]
4pub enum FlashMapError {
5 #[error("CUDA initialization failed: {0}")]
6 CudaInit(String),
7
8 #[error("GPU memory allocation failed: {0}")]
9 GpuAlloc(String),
10
11 #[error("kernel launch failed: {0}")]
12 KernelLaunch(String),
13
14 #[error("host-device transfer failed: {0}")]
15 Transfer(String),
16
17 #[error(
18 "table full: {occupied} occupied of {capacity} capacity (load factor {load_factor:.1}%)"
19 )]
20 TableFull {
21 occupied: usize,
22 capacity: usize,
23 load_factor: f64,
24 },
25
26 #[error("capacity must be positive")]
27 ZeroCapacity,
28
29 #[error("no backend available: enable 'cuda' or 'rayon' feature")]
30 NoBackend,
31
32 #[error("device-resident API requires GPU backend (currently using Rayon)")]
33 GpuRequired,
34
35 #[error("internal lock poisoned")]
36 LockPoisoned,
37
38 #[error("async task join failed: {0}")]
39 AsyncJoin(String),
40}