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/*
* Copyright (C) 2025 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#import "config.h"
#import "RemoteMonotonicTimelineRegistry.h"
#if ENABLE(THREADED_ANIMATIONS)
#import <WebCore/AcceleratedTimeline.h>
#import <wtf/MonotonicTime.h>
#import <wtf/TZoneMallocInlines.h>
namespace WebKit {
WTF_MAKE_TZONE_ALLOCATED_IMPL(RemoteMonotonicTimelineRegistry);
void RemoteMonotonicTimelineRegistry::update(WebCore::ProcessIdentifier processIdentifier, const WebCore::AcceleratedTimelinesUpdate& timelinesUpdate, MonotonicTime now)
{
#if ASSERT_ENABLED
// Monotonic timelines are immutable, we should never see an updated monotonic timeline.
for (auto& changedTimelineRepresentation : timelinesUpdate.modified)
ASSERT(!changedTimelineRepresentation->isMonotonic());
#endif
auto addCreatedTimelines = [&] {
if (timelinesUpdate.created.isEmpty())
return;
auto& timelines = m_timelines.ensure(processIdentifier, [] {
return HashSet<Ref<RemoteMonotonicTimeline>>();
}).iterator->value;
for (auto& createdTimelineRepresentation : timelinesUpdate.created) {
if (!createdTimelineRepresentation->isMonotonic())
continue;
TimelineID timelineID { createdTimelineRepresentation->identifier(), processIdentifier };
// There should not be a pre-existing timeline for this identifier since we're creating it.
ASSERT([&] {
for (auto& existingTimeline : timelines) {
if (existingTimeline->identifier() == timelineID)
return false;
}
return true;
}());
ASSERT(createdTimelineRepresentation->originTime());
timelines.add(RemoteMonotonicTimeline::create(timelineID, *createdTimelineRepresentation->originTime(), now));
}
if (timelines.isEmpty())
m_timelines.remove(processIdentifier);
};
auto removeDestroyedTimelines = [&] {
if (timelinesUpdate.destroyed.isEmpty())
return;
auto iterator = m_timelines.find(processIdentifier);
if (iterator == m_timelines.end())
return;
auto& existingTimelines = iterator->value;
for (auto& destroyedTimelineIdentifier : timelinesUpdate.destroyed) {
TimelineID destroyedTimelineID { destroyedTimelineIdentifier, processIdentifier };
existingTimelines.removeIf([destroyedTimelineID](auto& existingTimeline) {
return existingTimeline->identifier() == destroyedTimelineID;
});
}
if (existingTimelines.isEmpty())
m_timelines.remove(processIdentifier);
};
addCreatedTimelines();
removeDestroyedTimelines();
}
RemoteMonotonicTimeline* RemoteMonotonicTimelineRegistry::get(const TimelineID& timelineID) const
{
auto it = m_timelines.find(timelineID.processIdentifier());
if (it == m_timelines.end())
return nullptr;
for (auto& timeline : it->value) {
if (timeline->identifier() == timelineID)
return timeline.ptr();
}
return nullptr;
}
void RemoteMonotonicTimelineRegistry::advanceCurrentTime(MonotonicTime now)
{
for (auto& timelines : m_timelines.values()) {
for (auto& timeline : timelines)
timeline->updateCurrentTime(now);
}
}
} // namespace WebKit
#endif // ENABLE(THREADED_ANIMATIONS)
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