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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/raster/tile_task.h"
#include <utility>
#include "base/check.h"
#include "base/feature_list.h"
#include "cc/base/features.h"
namespace cc {
TileTask::TileTask(
SupportsConcurrentExecution supports_concurrent_execution,
SupportsBackgroundThreadPriority supports_background_thread_priority,
TileTask::Vector* dependencies)
: supports_concurrent_execution_(supports_concurrent_execution),
supports_background_thread_priority_(supports_background_thread_priority),
dependencies_(dependencies ? std::move(*dependencies)
: TileTask::Vector()) {}
TileTask::~TileTask() {
DCHECK(did_complete_);
}
void TileTask::DidComplete() {
DCHECK(!did_complete_);
did_complete_ = true;
}
bool TileTask::HasCompleted() const {
return did_complete_;
}
bool TileTask::IsRasterTask() const {
return true;
}
bool TileTask::TaskContainsLCPCandidateImages() const {
for (auto dependent : dependencies_) {
if (!dependent->HasCompleted() &&
dependent->TaskContainsLCPCandidateImages()) {
return true;
}
}
return false;
}
void TileTask::SetExternalDependent(scoped_refptr<TileTask> dependent) {
if (base::FeatureList::IsEnabled(features::kPreventDuplicateImageDecodes)) {
CHECK(IsRasterTask() != dependent->IsRasterTask());
// A task may have at most one external dependent.
CHECK(!external_dependent_ || external_dependent_->state().IsCanceled());
// A task may have at most one external dependency, and may not mix internal
// and external dependencies.
CHECK_EQ(dependent->dependencies_.size(), 0u);
dependent->dependencies_.push_back(this);
external_dependent_ = std::move(dependent);
}
}
void TileTask::ExternalDependencyCompleted() {
CHECK_EQ(dependencies_.size(), 1u);
dependencies_.clear();
}
} // namespace cc
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