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* Fix #5466
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Transition events are not yet supported, and the only animatable
properties are `top`, `right`, `bottom`, and `left`. However, all other
features of transitions are supported. There are no automated tests at
present because I'm not sure how best to test it, but three manual tests
are included.
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------------------------------------------------------------------------
BEFORE AFTER
------------------------------------------------------------------------
util::memory util::mem
- heap_size_of - heap_size_of (unchanged)
- SizeOf - HeapSizeOf
- size_of_excluding_self - heap_size_of_children
prof::mem prof::mem
- MemoryProfilerChan - ProfilerChan
- MemoryReport - Report
- MemoryReportsChan - ReportsChan
- MemoryReporter - Reporter
- MemoryProfilerMsg - ProfilerMsg
- {R,UnR}egisterMemoryReporter - {R,UnR}egisterReporter
- MemoryProfiler - Prof
- ReportsForest - ReportsForest (unchanged)
- ReportsTree - ReportsTree (unchanged)
- SystemMemoryReporter - SystemReporter
prof::time prof::time
- TimeProfilerChan - ProfilerChan
- TimerMetadata - TimerMetadata (unchanged)
- Formatable - Formattable [spelling!]
- TimeProfilerMsg - ProfilerMsg
- TimeProfilerCategory - ProfilerCategory
- TimeProfilerBuckets - ProfilerBuckets
- TimeProfiler - Profiler
- TimerMetadataFrameType - TimerMetadataFrameType (unchanged)
- TimerMetadataReflowType - TimerMetadataReflowType (unchanged)
- ProfilerMetadata - ProfilerMetadata (unchanged)
In a few places both prof::time and prof::mem are used, and so
module-qualification is needed to avoid overlap, e.g. time::Profiler and
mem::Profiler. Likewise with std::mem and prof::mem. This is not a big
deal.
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- Most of util::memory has been moved into profile::mem, though the
`SizeOf` trait and related things remain in util::memory. The
`SystemMemoryReporter` code is now in a submodule
profile::mem::system_reporter.
- util::time has been moved entirely into profile::time.
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This changeset implements the beginnings of fine-grained measurement of
Servo's data structures.
- It adds a new `SizeOf` trait, which is used to measure the memory used
by heap data structures, and implements it for some std types: Box,
String, Option, Arc, Vec, and DList.
- It adds a new `MemoryReporter` trait which is used to report memory
measurements from other threads to the memory profiler. Reporters are
registered and unregistered with the memory profiler, and the memory
profiler makes measurement requests of reporters when necessary.
- It plumbs a MemoryProfilerChan through to the layout task so it can
register a memory reporter.
- It implements the `SizeOf` trait for `DisplayList` and associated
types, and adds a memory reporter that uses it.
The display list hits 14.77 MiB when viewing
tests/html/perf-rainbow.html, and 2.51 MiB when viewing the Guardians of
the Galaxy Wikipedia page from servo-static-suite. Example output:
0.29: display-list::http://www.reddit.com/
0.00: display-list::http://static.adzerk.net/reddit/ads.html?sr=-reddit.com,loggedout&bust2#http://www.reddit.com
0.00: display-list::http://www.reddit.com/static/createadframe.html
There are a number of FIXME comments indicating sub-optimal things. This
is a big enough change for now that doing them as follow-ups seems best.
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Don't add a stylesheet if the current device does not match the media
query specified in a link or style tag.
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Also introduce a clear() function to layout data which will be used to clear items such as compositor layouts.
Clear the layout data when a node becomes display:none.
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This used to conflict with the util crate from the standard library, which
has long since been removed.
The import in layout has not been changed because of a conflict with the
util mod there.
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It is possible for a PaintTask to start exiting soon after sending new
buffers to the compositor. In that case, the compositor should return
the now unnecessary buffers to the PaintTask so that it can properly
free them.
To accomplish this, the compositor now keeps a hash map of paint task
channels per pipeline id. When a PaintTask exists, the constellation
informs the compositor that it can forget about it. Additionally, the
PaintTask should not wait for any buffers when the engine is doing a
complete shutdown. In that case, the compositor is already halted and
has simply let all buffers leak. We pipe through the shutdown type when
destroying the pipeline to make this decision.
Fixes #2641.
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Instead of creating a display list for the entire page, only create one
for an area that expands around the viewport. On my machine this makes
incremental layout of http://timecube.com 50% faster.
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Instead of looking at the display tree, have ContentBox(es)Query consult
the flow tree. This allow optimizing away parts of the display tree
later. To do this we need to be more careful about how we send reflow
requests, only querying the flow tree when possible.
Fixes #3790.
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This patch puts in the initial framework for incremental reflow. Nodes' styles
are no longer recalculated unless the node has changed.
I've been hacking on the general problem of incremental reflow for the past
couple weeks, and I've yet to get a full implementation that actually passes all
the reftests + wikipedia + cnn. Therefore, I'm going to try to land the different
parts of it one by one.
This patch only does incremental style recalc, without incremental flow
construction, inline-size bubbling, reflow, or display lists. Those will be coming
in that order as I finish them.
At least with this strategy, I can land a working version of incremental reflow,
even if not yet complete.
r? @pcwalton
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Fixes #3346.
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