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cat: avoid unnecessary allocation

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oech3
2026-04-12 16:31:52 +02:00
committed by Sylvestre Ledru
parent 9f50c8b42e
commit efd0f0cd10
1 changed files with 4 additions and 0 deletions
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src/uu/cat/src/cat.rs
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@@ -489,6 +489,10 @@ fn write_fast<R: FdReadable>(handle: &mut InputHandle<R>) -> CatResult<()> {
// If we're not on Linux or Android, or the splice() call failed, // If we're not on Linux or Android, or the splice() call failed,
// fall back on slower writing. // fall back on slower writing.
let mut stdout_lock = stdout.lock(); let mut stdout_lock = stdout.lock();
// stack allocation is overhead when splice succeed
#[cfg(any(target_os = "linux", target_os = "android"))]
let mut buf = vec![0; 1024 * 64];
#[cfg(not(any(target_os = "linux", target_os = "android")))]
let mut buf = [0; 1024 * 64]; let mut buf = [0; 1024 * 64];
loop { loop {
match handle.reader.read(&mut buf) { match handle.reader.read(&mut buf) {