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Remove -t/--threads flag from nu (#8686)

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### What?

This PR removes the `--threads` flag from nu.exe:


![image](https://user-images.githubusercontent.com/26268125/229021408-bf78ce64-11f7-4354-a410-ed905b96bb5a.png)

### Why?

Darren added a `--threads` flag to `par-each` in
https://github.com/nushell/nushell/pull/8679, so it no longer respects
the global `--threads` flag. Now the only place `rayon` is used is [the
`table`
renderer](3db0aed9f7/crates/nu-command/src/viewers/table.rs (L15)).

I don't think anyone will actually want to specify the number of threads
used in `table`, and it would be confusing to leave this flag around
when it no longer does anything useful.

### Notes

Relevant `rayon` docs:
https://docs.rs/rayon/latest/rayon/struct.ThreadPoolBuilder.html#method.build_global
This commit is contained in:
Reilly Wood 2023-04-01 00:47:56 -07:00 committed by GitHub
parent 83ddf0ebe2
commit 678e942bd8
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2 changed files with 0 additions and 21 deletions
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3
src/command.rs
View File

@ -107,7 +107,6 @@ pub(crate) fn parse_commandline_args(
let log_level: Option<Expression> = call.get_flag_expr("log-level"); let log_level: Option<Expression> = call.get_flag_expr("log-level");
let log_target: Option<Expression> = call.get_flag_expr("log-target"); let log_target: Option<Expression> = call.get_flag_expr("log-target");
let execute: Option<Expression> = call.get_flag_expr("execute"); let execute: Option<Expression> = call.get_flag_expr("execute");
let threads: Option<Value> = call.get_flag(engine_state, &mut stack, "threads")?;
let table_mode: Option<Value> = let table_mode: Option<Value> =
call.get_flag(engine_state, &mut stack, "table-mode")?; call.get_flag(engine_state, &mut stack, "table-mode")?;
@ -181,7 +180,6 @@ pub(crate) fn parse_commandline_args(
log_level, log_level,
log_target, log_target,
execute, execute,
threads,
table_mode, table_mode,
}); });
} }
@ -213,7 +211,6 @@ pub(crate) struct NushellCliArgs {
pub(crate) log_level: Option<Spanned<String>>, pub(crate) log_level: Option<Spanned<String>>,
pub(crate) log_target: Option<Spanned<String>>, pub(crate) log_target: Option<Spanned<String>>,
pub(crate) execute: Option<Spanned<String>>, pub(crate) execute: Option<Spanned<String>>,
pub(crate) threads: Option<Value>,
pub(crate) table_mode: Option<Value>, pub(crate) table_mode: Option<Value>,
} }

18
src/main.rs
View File

@ -136,24 +136,6 @@ fn main() -> Result<()> {
use_color, use_color,
); );
start_time = std::time::Instant::now();
if let Some(t) = parsed_nu_cli_args.threads.clone() {
// 0 means to let rayon decide how many threads to use
let threads = t.as_i64().unwrap_or(0);
rayon::ThreadPoolBuilder::new()
.num_threads(threads as usize)
.build_global()
.expect("error setting number of threads");
}
perf(
"set rayon threads",
start_time,
file!(),
line!(),
column!(),
use_color,
);
start_time = std::time::Instant::now(); start_time = std::time::Instant::now();
if let Some(testbin) = &parsed_nu_cli_args.testbin { if let Some(testbin) = &parsed_nu_cli_args.testbin {
// Call out to the correct testbin // Call out to the correct testbin