This removes paint threads, rust-layers dependency, and changes
optional webrender types to be required.
The use_webrender option has been removed, however I've left
the "-w" command line option in place so that wpt
runner can continue to pass that. Once it's removed from there
we can also remove the -w option.
Once this stage is complete, it should be fine to change the
display list building code to generate webrender display
lists directly and avoid the conversion step.
In most scenarios, where the user of Servo will not override the default
user agent, the user agent can be a `&'static str`. But since we allow
for customization, we currently use a `String` to represent the user
agent. This commit migrates the user agent to be represented as a
`Cow<'static, str>`, which (at the cost of ergonomics) prevents
unnecessary allocations whenever cloning the user agent string in the
scenario the user doesn't override the user agent.
Don't log in the middle of mutating a reentrant lock
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Moved assertion that we are the lock owner to after the lock release. The problem is that Servo uses a reentrant lock for logging, so logging in the middle of mutating the lock is A Bad Idea.
While I was at it, I tidied up the reentrant lock code.
cc @jdm
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infrastructure.
With this change, if you supply the `-Z signpost` flag, Instruments.app
can display Servo events overlaid with callstack data. Even better, you
can get call stack profiling for individual Servo events (one layout,
one network request, one style recalculation, etc.)
This adds a dependency on the `signpost` crate. On unsupported OS's,
this crate is an no-op.
Implement sequential fallback to float speculation
This shouldn't impact any pages that are already rendering correctly, but it is a very naive implementation of this pass.
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The style candidate cache had regressed a few times (see #12534), and my
intuition is that being able to disable all style sharing with a single rule in
the page is really unfortunate.
This commit redesigns the style sharing cache in order to be a optimistic cache,
but then reject candidates if they match different sibling-affecting selectors
in the page, for example.
So far the numbers have improved, but not so much as I'd wanted (~10%/20% of
non-incremental restyling time in general). The current implementation is really
dumb though (we recompute and re-match a lot of stuff), so we should be able to
optimise it quite a bit.
I have different ideas for improving it (that may or may not work), apart of the
low-hanging fruit like don't re-matching candidates all the time but I have to
measure the real impact.
Also, I need to verify it against try.
Fix a cached style cascade bug that only manifested in sequential mode
When copying cached styles, keep the `writing_mode` up to date.
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EDIT: The test is now working. I ran it with the first commit (the actual fix) reverted and it failed.
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Add a flag to dump the computed style values
I used this to trace #11818 to a style bug, rather than a layout bug.
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Removed panic channel, replaced by integrated logging and issue reporting
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Remove the previous ad hoc panic channel, replace it by an integrated logging and panicking mechanism, including crash reporting. All thread panics are now reported, not just content threads.
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Check for Resources on case sensitive filesystem
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Case where this is needed:
http://logs.glob.uno/?c=mozilla%23servo&s=1+Jul+2016&e=1+Jul+2016#c471192
Another option is to make the Resources folder on the mac .app bundle be lower case; however, it is standard to have `Resources` in a .app bundle.
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prefs: Make the preferences be guarded by a RwLock instead of a Mutex
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This should reduce unnecessary locks that happen when we read preferences.
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