From 9b2b8df927ac23cfa99016a684179f2a3198ba2e Mon Sep 17 00:00:00 2001 From: Divy Srivastava Date: Thu, 1 Dec 2022 21:29:15 -0800 Subject: feat(ops): Fast zero copy string arguments (#16777) Uses SeqOneByteString optimization to do zero-copy `&str` arguments in fast calls. - [x] Depends on https://github.com/denoland/rusty_v8/pull/1129 - [x] Depends on https://chromium-review.googlesource.com/c/v8/v8/+/4036884 - [x] Disable in async ops - [x] Make it work with owned `String` with an extra alloc in fast path. - [x] Support `Cow<'_, str>`. Owned for slow case, Borrowed for fast case ```rust #[op] fn op_string_len(s: &str) -> u32 { str.len() as u32 } ``` --- ops/optimizer_tests/owned_string.rs | 3 +++ 1 file changed, 3 insertions(+) create mode 100644 ops/optimizer_tests/owned_string.rs (limited to 'ops/optimizer_tests/owned_string.rs') diff --git a/ops/optimizer_tests/owned_string.rs b/ops/optimizer_tests/owned_string.rs new file mode 100644 index 000000000..102cf00fb --- /dev/null +++ b/ops/optimizer_tests/owned_string.rs @@ -0,0 +1,3 @@ +fn op_string_length(string: String) -> u32 { + string.len() as u32 +} -- cgit v1.2.3