Fetch cancellation
This PR implements cancellation for fetch, and uses it for XHR. This means that fetch clients can now send a message to the fetch task asking for the network request to be aborted.
Previously, clients like XHR had abort functionality but would implement it by simply ignoring future messages from the network task; and would not actually cancel the network fetch.
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Continue http cache work
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Work in progress, and not quite worth a review yet. (Continuation of https://github.com/servo/servo/pull/4117)
TODO
- [ ] cache metadata (find some subset of`net_traits::Metadata` that can be shared across threads, it seems the problem is mainly stuff inside `hyper::header` in the `headers` field)
- [ ] determine which other fields of a `Response` need to be cached, so a full and valid one can be returned upon a cache hit.
- [ ] determine how to best share the cache across fetch threads (inside HttpState like I tried now?)
- [ ] Spend more time reading the spec and make sure the cache follows it where it matters.
- [ ] Make the current wpt tests pass.
- [ ] More...
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- [ ] `./mach test-tidy` does not report any errors
- [ ] These changes fix#12972 (github issue number if applicable).
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Doom cache entries based on the initial response, and prevent matching against doomed cache enties.
Evict cache entries that have passed their expiry date instead of matching them.
Document the cache. Refactor incomplete entries to lessen Option-itis.
Revalidate expired cache entries instead of unconditionally evicting them.
Forbid missing docs in cache code.
Revalidate must-revalidate entries.
Fetch content tests from a local HTTP server.
Track requests made to the test HTTP server.
Add a simple test that a cached resource with no expiry is not revalidated. Correct inverted expiry check in revalidation code.
Fix incorrect revalidation logic that dropped the consumer channels on the floor.
Ensure that requests are cached based on their request headers.
Run a separate http server instance for each test to avoid intermittent failures due to concurrent cache tests.
Add a test for uncacheable responses.
Address review comments.
Servo currently uses `heapsize`, but Stylo/Gecko use `malloc_size_of`.
`malloc_size_of` is better -- it handles various cases that `heapsize` does not
-- so this patch changes Servo to use `malloc_size_of`.
This patch makes the following changes to the `malloc_size_of` crate.
- Adds `MallocSizeOf` trait implementations for numerous types, some built-in
(e.g. `VecDeque`), some external and Servo-only (e.g. `string_cache`).
- Makes `enclosing_size_of_op` optional, because vanilla jemalloc doesn't
support that operation.
- For `HashSet`/`HashMap`, falls back to a computed estimate when
`enclosing_size_of_op` isn't available.
- Adds an extern "C" `malloc_size_of` function that does the actual heap
measurement; this is based on the same functions from the `heapsize` crate.
This patch makes the following changes elsewhere.
- Converts all the uses of `heapsize` to instead use `malloc_size_of`.
- Disables the "heapsize"/"heap_size" feature for the external crates that
provide it.
- Removes the `HeapSizeOf` implementation from `hashglobe`.
- Adds `ignore` annotations to a few `Rc`/`Arc`, because `malloc_size_of`
doesn't derive those types, unlike `heapsize`.
Fixes warnings from rust-lang/rust#44229 when `--enable-commonmark` is
passed to rustdoc.
This is mostly a global find-and-replace for bare URIs on lines by
themselves in doc comments.
* Add support for clip masks on text runs.
* Fix atomic ordering of items with multiple shadows.
* Update to bincode + ipc-channel with optimizations.
* Fix some plane splitting precision errors.
* Improve the anti-aliasing quality significantly.
* Add internal ClipChain support.
* Fix diacritic glyphs on Linux.
"`#[must_use]` on methods is experimental" and
"trait bounds are not (yet) enforced in type definitions"
are shown despite Cargo using `--cap-lints=allow` for dependencies.
Properly set origin of fetch requests
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These changes aim to fix#15247
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<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: -->
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix#15247 (github issue number if applicable).
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- [ ] There are tests for these changes
- [x] These changes do not require tests because cors is already tested with different origins
These changes require changes in tests, but I need help with that (see comments below).
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