forked from extern/nushell
a52386e837
# Description Our `ShellError` at the moment has a `std::mem::size_of<ShellError>` of 136 bytes (on AMD64). As a result `Value` directly storing the struct also required 136 bytes (thanks to alignment requirements). This change stores the `Value::Error` `ShellError` on the heap. Pro: - Value now needs just 80 bytes - Should be 1 cacheline less (still at least 2 cachelines) Con: - More small heap allocations when dealing with `Value::Error` - More heap fragmentation - Potential for additional required memcopies # Further code changes Includes a small refactor of `try` due to a type mismatch in its large match. # User-Facing Changes None for regular users. Plugin authors may have to update their matches on `Value` if they use `nu-protocol` Needs benchmarking to see if there is a benefit in real world workloads. **Update** small improvements in runtime for workloads with high volume of values. Significant reduction in maximum resident set size, when many values are held in memory. # Tests + Formatting |
||
|---|---|---|
| .. | ||
| ast | ||
| engine | ||
| value | ||
| alias.rs | ||
| cli_error.rs | ||
| config.rs | ||
| example.rs | ||
| exportable.rs | ||
| id.rs | ||
| lev_distance.rs | ||
| lib.rs | ||
| module.rs | ||
| pipeline_data.rs | ||
| plugin_signature.rs | ||
| shell_error.rs | ||
| signature.rs | ||
| span.rs | ||
| syntax_shape.rs | ||
| ty.rs | ||
| util.rs | ||
| variable.rs | ||