This PR optimizes the case when `performance.measure()` needs to find
the startMark by name. It is a simple change on `findMostRecent` fn to
avoiding copying and reversing the complete entries list.
Adds minor missing tests for:
- `clearMarks()`, general
- `clearMeasures()`, general
- `measure()`, case when the startMarks name exists more than once
### Benchmarks
#### main
```
CPU | AMD Ryzen 7 PRO 6850U with Radeon Graphics
Runtime | Deno 2.0.0-rc.4 (x86_64-unknown-linux-gnu)
benchmark time/iter (avg) iter/s (min … max) p75 p99 p995
---------------------- ----------------------------- --------------------- --------------------------
worst case measure() 2.1 ms 486.9 ( 1.7 ms … 2.4 ms) 2.2 ms 2.4 ms 2.4 ms
```
#### this PR
```
CPU | AMD Ryzen 7 PRO 6850U with Radeon Graphics
Runtime | Deno 2.0.0-rc.4 (x86_64-unknown-linux-gnu)
benchmark time/iter (avg) iter/s (min … max) p75 p99 p995
---------------------- ----------------------------- --------------------- --------------------------
worst case measure() 966.3 µs 1,035 (876.9 µs … 1.1 ms) 1.0 ms 1.1 ms 1.1 ms
```
```ts
Deno.bench("worst case measure()", (b) => {
performance.mark('start');
for (let i = 0; i < 1e5; i += 1) {
performance.mark(crypto.randomUUID());
}
b.start();
performance.measure('total', 'start');
b.end();
performance.clearMarks();
performance.clearMeasures();
});
```
This fixes the fast path for `readableStreamCollectIntoUint8Array` to
only trigger if the readable stream has not yet been disturbed -
because otherwise we may not be able to close it if the
read errors.
Remove `--allow-hrtime` and `--deny-hrtime`. We are doing this because
it is already possible to get access to high resolution timers through
workers and SharedArrayBuffer.
Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>
To ensure consistency across the codebase, this commit refactors the
code in the `ext` folder to use `throw new Error`` instead of `throw`
for throwing errors.
Fixes https://github.com/denoland/deno/issues/25270
This is the release commit being forwarded back to main for 1.45.3
---------
Co-authored-by: bartlomieju <bartlomieju@users.noreply.github.com>
Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>
This is the release commit being forwarded back to main for 1.44.3
Co-authored-by: bartlomieju <bartlomieju@users.noreply.github.com>
Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>
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Fixes #20663.
---------
Co-authored-by: Asher Gomez <ashersaupingomez@gmail.com>
Co-authored-by: Divy Srivastava <dj.srivastava23@gmail.com>
I was able to use my experience with some of the Deno extensions to
flesh out their documentation a bit
I've provided docs for the following:
- web
- fetch
- net
- webidl
- url
- io
- crypto
- console
---------
Signed-off-by: Richard Carson <Rscarson@rogers.com>
Also removes permissions being passed in for node resolution. It was
completely useless because we only checked it for reading package.json
files, but Deno reading package.json files for resolution is perfectly
fine.
My guess is this is also a perf improvement because Deno is doing less
work.
This is the release commit being forwarded back to main for 1.44.1
Co-authored-by: devsnek <devsnek@users.noreply.github.com>
Co-authored-by: Divy Srivastava <dj.srivastava23@gmail.com>
This makes `DOMException`'s `stack` property behave the same as native
errors' – `stack` is now an own accessor property on every instance, and
the getter calls `Error.prepareStackTrace`.
Upgrades `deno_core` to 0.284.0.
---------
Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>
`createAsyncFromSyncIterator(x)` which is used in
`ReadableStream.from()` expects `x` as `Iterable` but, previous
implements specify `Iterator` or `IterableIterator`. If it was
`IterableIterator`, it would work, but if it was `Iterator`, an
exception will occur.
Tests have been merged into WPT.
https://github.com/web-platform-tests/wpt/pull/46365
---------
Co-authored-by: Asher Gomez <ashersaupingomez@gmail.com>
If `@@asyncIterator` is `null` or `undefined`, it should ignores and
fallback to `@@iterator`.
Tests have been merged into WPT.
https://github.com/web-platform-tests/wpt/pull/46374
The proposal of `ReadableStream.from` uses TC39 [GetIterator][] and
[GetMethod][] within it.
GetMethod treats null as undefined.
So if `@@asyncIterator` is `null` it should be ignored and fallback to
`@@iterator`.
[GetIterator]: https://tc39.es/ecma262/#sec-getiterator
[GetMethod]: https://tc39.es/ecma262/#sec-getmethod
```bash
> deno eval "ReadableStream.from({ [Symbol.asyncIterator]: null, [Symbol.iterator]: () => ({ next: () => ({ done: true }) }) }).pipeTo(new WritableStream())"
error: Uncaught (in promise) TypeError: obj[SymbolAsyncIterator] is not a function
ReadableStream.from({ [Symbol.asyncIterator]: null, [Symbol.iterator]: () => ({ next: () => ({ done: true }) }) }).pipeTo(new WritableStream())
^
at getIterator (ext:deno_web/06_streams.js:5105:38)
at Function.from (ext:deno_web/06_streams.js:5207:22)
at file:///D:/work/js/deno/tests/wpt/suite/$deno$eval:1:16
```
---------
Co-authored-by: Asher Gomez <ashersaupingomez@gmail.com>
This is a primordialization effort to improve resistance against users
tampering with the global `Object` prototype.
---------
Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>
Because the buffers are `MaybeUninit<V8Slice<u8>`, and the owner of the
`BoundedBufferChannel` is not obligated to read each and every bit of
data, we may find that some buffers were not automatically dropped if
unread by the time the `BoundedBufferChannelInner` is dropped.
Possible repro:
```
Deno.serve(() => new Response(new ReadableStream({ start(controller) { controller.enqueue(new Uint8Array(100_000_000)) } })));
```
```bash
while true; do curl localhost:8000 | dd count=1; done
```
