Use better JS engine defaults
This adds in preferences for all the SM 39 available options (as
retrieved from Gecko), and uses the same defaults as Gecko. A few
properties are not supported yet, and incremental GC is still always
disabled regardless of the preference setting.
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The main issue was resources_dir_path. Every time it was called it would start from the executable's path and walk up the hierarchy to find a directory named "resources". The sandbox was granted permission to read from the found resources dir, but after the sandbox had been activated resources_dir_path would again start from the executable's path and try to find the resources dir. It would then fail with "Operation not permitted" when trying to canonicalize the path because it didn't have permissions to read metadata under ./target.
To fix this the resources dir path is now cached between resources_dir_path calls.
This adds in preferences for all the SM 39 available options (as
retrieved from Gecko), and uses the same defaults as Gecko. A few
properties are not supported yet, and incremental GC is still always
disabled regardless of the preference setting.
This also adds back in the options that were accidentally deleted when
\#10342 was rebased, which moved things from script_thread.rs to
script_runtime.rs.
Added --soft-fail option.
At the moment, wptrunner always runs the WPT tests with `servo --hard-fail`. To test hardening, we need to switch off `--hard-fail`. This PR introduces a `--soft-fail` option to do that.
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Skip printing the backtrace for RecvError/SendError
We currently get tons of useless backtraces clogging up the output when we have a panic cascade. This adds a handler that outputs a single line when a thread panics due to a sender or receiver hanging up, since this is almost always due to a panic cascade.
We could add a commandline arg that gets us back the old behavior, though I'm not sure if this is necessary.
r? @asajeffrey
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Load prefs.json from profile-dir if --profile-dir is specified at launch
In response to #10098
Tries to load `prefs.json` from the profile-dir and merge them into the preferences if `--profile-dir` is specified at launch. The profile-dir preferences take precedence over the default preferences, but command line preferences still take precedence over everything.
Also adds some tests for `prefs.rs`. These rely on the contents of `resources/prefs.json` (at least `test_get_set_reset_extend()` does), so they may need to be re-worked a bit.
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We currently get tons of useless backtraces clogging up the output when we have a panic cascade. This adds a handler that outputs a single line when a thread panics due to a sender or receiver hanging up, since this is almost always due to a panic cascade.
Allow setting preferences to false in WPT tests
First patch to servo - apologies if I did something stupid :)
This is a fix for #10161. I have squashed the commits into one.
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add a new command line flag --profile-dir [path]
add a new command line flag --profile-dir [path] that stores an optional directory path in the Opts struct in opts.rs, creating the directory if it does not exist.
For the Implement HTTP authorization UI and persistent sessions student project.
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Optimize flat display lists
Flat display lists were a 2x regression on the spheres demo. This patch series fixes that.
See the individual commits for more details.
r? @mrobinson
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Instead of producing a tree of stacking contexts, display list
generation now produces a flat list of display items and a tree of
stacking contexts. This will eventually allow display list construction
to produce and modify WebRender vertex buffers directly, removing the
overhead of display list conversion. This change also moves
layerization of the display list to the paint thread, since it isn't
currently useful for WebRender.
To accomplish this, display list generation now takes three passes of
the flow tree:
1. Calculation of absolute positions.
2. Collection of a tree of stacking contexts.
3. Creation of a list of display items.
After collection of display items, they are sorted based upon the index
of their parent stacking contexts and their position in CSS 2.1
Appendeix E stacking order.
This is a big change, but it actually simplifies display list generation.
Remove parallel display list construction
Parallel display list construction hasn't been shown to give any
performance gains. It is also incompatible with the current flat display
list implementation. Once flat display lists have landed, we can explore
possible benefits of parallel construction once again.
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