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Code Issues Packages 1 Wiki Activity

perf(ext/http): from_maybe_shared_unchecked for header values (#19478)

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Prevents re-checking strings we already know are latin-1. Small
improvement: 115k->116k
This commit is contained in:
Matt Mastracci 2023-06-12 17:43:49 -06:00 committed by Bartek Iwańczuk
parent 4a4878f4a6
commit b480341fa6
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GPG key ID: 0C6BCDDC3B3AD750
1 changed files with 14 additions and 5 deletions
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19
ext/http/http_next.rs
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@ -16,6 +16,7 @@ use crate::slab::slab_insert;
use crate::slab::SlabId; use crate::slab::SlabId;
use crate::websocket_upgrade::WebSocketUpgrade; use crate::websocket_upgrade::WebSocketUpgrade;
use crate::LocalExecutor; use crate::LocalExecutor;
use bytes::Bytes;
use cache_control::CacheControl; use cache_control::CacheControl;
use deno_core::error::AnyError; use deno_core::error::AnyError;
use deno_core::futures::TryFutureExt; use deno_core::futures::TryFutureExt;
@ -376,12 +377,17 @@ pub fn op_http_read_request_body(
} }
#[op(fast)] #[op(fast)]
pub fn op_http_set_response_header(slab_id: SlabId, name: &str, value: &str) { pub fn op_http_set_response_header(
slab_id: SlabId,
name: ByteString,
value: ByteString,
) {
let mut http = slab_get(slab_id); let mut http = slab_get(slab_id);
let resp_headers = http.response().headers_mut(); let resp_headers = http.response().headers_mut();
// These are valid latin-1 strings // These are valid latin-1 strings
let name = HeaderName::from_bytes(name.as_bytes()).unwrap(); let name = HeaderName::from_bytes(&name).unwrap();
let value = HeaderValue::from_bytes(value.as_bytes()).unwrap(); // SAFETY: These are valid latin-1 strings
let value = unsafe { HeaderValue::from_maybe_shared_unchecked(value) };
resp_headers.append(name, value); resp_headers.append(name, value);
} }
@ -410,7 +416,9 @@ fn op_http_set_response_headers(
let v8_name: ByteString = from_v8(scope, name).unwrap(); let v8_name: ByteString = from_v8(scope, name).unwrap();
let v8_value: ByteString = from_v8(scope, value).unwrap(); let v8_value: ByteString = from_v8(scope, value).unwrap();
let header_name = HeaderName::from_bytes(&v8_name).unwrap(); let header_name = HeaderName::from_bytes(&v8_name).unwrap();
let header_value = HeaderValue::from_bytes(&v8_value).unwrap(); // SAFETY: These are valid latin-1 strings
let header_value =
unsafe { HeaderValue::from_maybe_shared_unchecked(v8_value) };
resp_headers.append(header_name, header_value); resp_headers.append(header_name, header_value);
} }
} }
@ -425,7 +433,8 @@ pub fn op_http_set_response_trailers(
for (name, value) in trailers { for (name, value) in trailers {
// These are valid latin-1 strings // These are valid latin-1 strings
let name = HeaderName::from_bytes(&name).unwrap(); let name = HeaderName::from_bytes(&name).unwrap();
let value = HeaderValue::from_bytes(&value).unwrap(); // SAFETY: These are valid latin-1 strings
let value = unsafe { HeaderValue::from_maybe_shared_unchecked(value) };
trailer_map.append(name, value); trailer_map.append(name, value);
} }
*http.trailers().borrow_mut() = Some(trailer_map); *http.trailers().borrow_mut() = Some(trailer_map);