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perf(es): Cache current_dir() system calls #9683

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merged 3 commits into from
Oct 29, 2024
Merged

perf(es): Cache current_dir() system calls #9683

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0da258d
perf: current_dir is syscall
kdy1 Oct 29, 2024
95c7f91
default_cwd
kdy1 Oct 29, 2024
8f0a7b0
Create silent-cows-brake.md
kdy1 Oct 29, 2024
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4 changes: 3 additions & 1 deletion crates/swc/src/config/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -842,7 +842,9 @@ pub struct CallerOptions {

#[cfg(not(all(target_arch = "wasm32", not(target_os = "wasi"))))]
fn default_cwd() -> PathBuf {
::std::env::current_dir().unwrap()
static CWD: Lazy<PathBuf> = Lazy::new(|| ::std::env::current_dir().unwrap());

CWD.clone()
}

/// `.swcrc` file
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12 changes: 9 additions & 3 deletions crates/swc_common/src/plugin/metadata.rs
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Original file line number Diff line number Diff line change
@@ -1,5 +1,7 @@
use std::env;

use once_cell::sync::Lazy;

use crate::collections::AHashMap;

/// Indexable key to the metadata context for a transform plugin.
Expand Down Expand Up @@ -48,12 +50,16 @@ impl TransformPluginMetadataContext {
env: String,
experimental: Option<AHashMap<String, String>>,
) -> Self {
static CWD: Lazy<Option<String>> = Lazy::new(|| {
env::current_dir()
.map(|cwd| cwd.as_path().to_string_lossy().to_string())
.ok()
});

TransformPluginMetadataContext {
filename,
env,
cwd: env::current_dir()
.map(|cwd| cwd.as_path().to_string_lossy().to_string())
.ok(),
cwd: CWD.clone(),
experimental: experimental.unwrap_or_default(),
}
}
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