This commits changes "deno_core" to use jemalloc allocator as an
allocator
for V8 array buffers. This greatly improves our GC characteristics as we
are using
a lot of short lived array buffers. They no longer go through the
expensive
malloc/free cycle using the default Rust allocator, but instead use
jemallocator's
memory pool.
As a result the flamegraphs for WS/HTTP server flamegraphs no longer
show
stacks for malloc/free around ops that use ZeroCopyBuf and &[u8].
---------
Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>
This commit changes how paths for npm packages are handled,
by canonicalizing them when resolving. This is done so that instead
of returning
"node_modules/<package_name>@<version>/node_modules/<dep>/index.js"
(which is a symlink) we "node_modules/<dep>@<dep_version>/index.js.
Fixes https://github.com/denoland/deno/issues/18924
Fixes https://github.com/bluwy/create-vite-extra/issues/31
---------
Co-authored-by: David Sherret <dsherret@gmail.com>
Migrates some of existing async ops to generated wrappers introduced in
https://github.com/denoland/deno/pull/18887. As a result "core.opAsync2"
was removed.
I will follow up with more PRs that migrate all the async ops to
generated wrappers.
2 fixes related to sync fs:
* update the 2 sync methods on `Resource` trait to take `Rc<Self>`
(consistent with other methods)
* fix a bug in `StdFileResource::with_inner_and_metadata`, which
currently can trigger a panic if a sync method is called on a file with
a pending async operation. This could happen in the code path where
`File::try_clone`
[fails](39ece1fe0d/ext/io/lib.rs (L485-L489)).
Fixes #8858.
Fixes #8869.
```
$ target/debug/deno
Deno 1.32.5
exit using ctrl+d, ctrl+c, or close()
REPL is running with all permissions allowed.
To specify permissions, run `deno repl` with allow flags.
> Promise.reject(new Error("bar"));
Promise { <rejected> Error: bar
at <anonymous>:2:16 }
Uncaught (in promise) Error: bar
at <anonymous>:2:16
> reportError(new Error("baz"));
undefined
Uncaught Error: baz
at <anonymous>:2:13
>
About 2% improvement on WS/HTTP benchmarks, possibly unlocking more
optimizations in the future.
---------
Co-authored-by: Matt Mastracci <matthew@mastracci.com>
This is a rewrite of the `Deno.serve` API to live on top of hyper
1.0-rc3. The code should be more maintainable long-term, and avoids some
of the slower mpsc patterns that made the older code less efficient than
it could have been.
Missing features:
- `upgradeHttp` and `upgradeHttpRaw` (`upgradeWebSocket` is available,
however).
- Automatic compression is unavailable on responses.
This commit changes how "disabled" ops behave. Instead of using "void"
functions under the hood, they now explicitly throw errors saying
that a given op doesn't exist.
Alternative to https://github.com/denoland/deno/pull/18726.
This was suggested by @piscisaureus. It's a bit ugly, but it does the
work and makes cloning `JsRealm` very cheap, while not requiring
invasive changes.
Also managed to remove some vector and `v8::Global` clones which yields
about 5% improvement in the "async_ops_deferred.js" benchmark.
This PR:
```
time 1689 ms rate 592066
time 1722 ms rate 580720
time 1629 ms rate 613873
time 1578 ms rate 633713
time 1585 ms rate 630914
time 1574 ms rate 635324
```
`main` branch:
```
time 1687 ms rate 592768
time 1676 ms rate 596658
time 1651 ms rate 605693
time 1652 ms rate 605326
time 1638 ms rate 610500
```
This commit removes the dependencies on `deno_core` for the Fs trait.
This allows to move the trait into a different crate that does not
depend on core in the limit.
This adds a new `bounds` field to `deno_core::extension!` that expands
to `where` clauses on the generated code. This allows to add bounds to
the extension parameters, such as `Fs::File: Resource`.
```
./target/release/deno run cli/bench/async_ops_deferred.js
time 794 ms rate 1259445
time 786 ms rate 1272264
time 770 ms rate 1298701
time 784 ms rate 1275510
time 775 ms rate 1290322
time 786 ms rate 1272264
time 773 ms rate 1293661
time 771 ms rate 1297016
time 774 ms rate 1291989
time 767 ms rate 1303780
time 764 ms rate 1308900
time 768 ms rate 1302083
time 763 ms rate 1310615
time 761 ms rate 1314060
time 761 ms rate 1314060
time 762 ms rate 1312335
time 763 ms rate 1310615
time 759 ms rate 1317523
time 760 ms rate 1315789
time 761 ms rate 1314060
time 769 ms rate 1300390
time 763 ms rate 1310615
time 760 ms rate 1315789
time 763 ms rate 1310615
time 761 ms rate 1314060
time 759 ms rate 1317523
time 765 ms rate 1307189
time 760 ms rate 1315789
time 764 ms rate 1308900
time 763 ms rate 1310615
time 760 ms rate 1315789
time 757 ms rate 1321003
time 763 ms rate 1310615
time 759 ms rate 1317523
time 771 ms rate 1297016
time 759 ms rate 1317523
time 759 ms rate 1317523
time 763 ms rate 1310615
time 754 ms rate 1326259
time 755 ms rate 1324503
time 762 ms rate 1312335
time 752 ms rate 1329787
time 755 ms rate 1324503
time 754 ms rate 1326259
time 759 ms rate 1317523
time 754 ms rate 1326259
time 749 ms rate 1335113
time 753 ms rate 1328021
time 756 ms rate 1322751
time 753 ms rate 1328021
```
```
samply record -r 20000 target/release/deno run cli/bench/async_ops_deferred.js
```
https://share.firefox.dev/43Efvm6
Currently we are "waking up" the runtime if at the end of the event loop
tick there are ops that haven't been polled. Waking up incurs a syscall
and it appears we can do another tick of the event loop, without
going through the "wake up" machinery.
This commit refactors "deno_core" to do fewer boundary crossings
from Rust to V8. In other words we are now calling V8 from Rust fewer
times.
This is done by merging 3 distinct callbacks into a single one. Instead
of having "op resolve" callback, "next tick" callback and "macrotask
queue" callback, we now have only "Deno.core.eventLoopTick" callback,
which is responsible for doing the same actions previous 3 callbacks.
On each of the event loop we were doing at least 2 boundary crosses
(timers macrotask queue callback and unhandled promise rejection
callback) and up to 4 crosses if there were op response and next tick
callbacks coming from Node.js compatibility layer. Now this is all done
in a single callback.
Closes https://github.com/denoland/deno/issues/18620
This commit changes "eager ops" to directly return a response value
instead of calling "opresponse" callback in JavaScript. This saves
one boundary crossing and has a fantastic impact on the "async_ops.js"
benchmark:
```
v1.32.4
$ deno run cli/bench/async_ops.js
time 329 ms rate 3039513
time 322 ms rate 3105590
time 307 ms rate 3257328
time 301 ms rate 3322259
time 303 ms rate 3300330
time 306 ms rate 3267973
time 300 ms rate 3333333
time 301 ms rate 3322259
time 301 ms rate 3322259
time 301 ms rate 3322259
time 302 ms rate 3311258
time 301 ms rate 3322259
time 302 ms rate 3311258
time 302 ms rate 3311258
time 303 ms rate 3300330
```
```
this branch
$ ./target/release/deno run -A cli/bench/async_ops.js
time 257 ms rate 3891050
time 248 ms rate 4032258
time 251 ms rate 3984063
time 246 ms rate 4065040
time 238 ms rate 4201680
time 227 ms rate 4405286
time 228 ms rate 4385964
time 229 ms rate 4366812
time 228 ms rate 4385964
time 226 ms rate 4424778
time 226 ms rate 4424778
time 227 ms rate 4405286
time 228 ms rate 4385964
time 227 ms rate 4405286
time 228 ms rate 4385964
time 227 ms rate 4405286
time 229 ms rate 4366812
time 228 ms rate 4385964
```
Prerequisite for https://github.com/denoland/deno/pull/18652
This commit abstracts out the specifics of the underlying system calls
FS operations behind a new `FileSystem` and `File` trait in the
`ext/fs` extension.
This allows other embedders to re-use ext/fs, but substituting in a
different FS backend.
This is likely not the final form of these traits. Eventually they will
be entirely `deno_core::Resource` agnostic, and will live in a seperate
crate.
---------
Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>
Fixes #6259.
Adds the location for v8 syntax errors to the message (`message += " at
{location}"`) when rethrowing them for dynamic imports.
Discussing with @bartlomieju on discord I proposed just preserving v8's
error and not reconstructing it, allowing the standard stack trace to
just point to the syntax error instead of the dynamic import. But on
further thought this way has parity with SWC's syntax errors + has the
advantage of showing both the syntax error and dynamic import location.
```ts
// temp.js
await import("./temp2.js");
// temp2.js
function foo() {
await Promise.resolve();
}
// Before:
// error: Uncaught (in promise) SyntaxError: Unexpected reserved word
// await import("./temp2.js");
// ^
// at async file:///.../temp.js:1:1
// After:
// error: Uncaught (in promise) SyntaxError: Unexpected reserved word at file:///.../temp2.js:2:3
// await import("./temp2.js");
// ^
// at async file:///.../temp.js:1:1
```
This commit adds op_read_sync and op_write_sync to core. These ops are
similar to op_read and op_write, but they are synchronous. Just like the
async ops, they operate on generic `deno_core::Resource` objects. These
now have new `read_byob_sync` and `write_sync` methods, with default
implementations throwing "NotSupported" errors, just like the async
counterparts.
There are no `write_all` or `read` equivalents, because the
optimizations they unlock are not useful in synchronous contexts.
This is a follow-on to the earlier work in reducing string copies,
mainly focused on ensuring that ASCII strings are easy to provide to the
JS runtime.
While we are replacing a 16-byte reference in a number of places with a
24-byte structure (measured via `std::mem::size_of`), the reduction in
copies wins out over the additional size of the arguments passed into
functions.
Benchmarking shows approximately the same if not slightly less wallclock
time/instructions retired, but I believe this continues to open up
further refactoring opportunities.
