blob: 003645c4214e00a3d172b791a9a0a3e5a36fa7c3 [file] [log] [blame]
/*
* Copyright 2016 Google Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "cobalt/dom/dom_stat_tracker.h"
#include "base/stringprintf.h"
namespace cobalt {
namespace dom {
DomStatTracker::DomStatTracker(const std::string& name)
: total_html_elements_(
StringPrintf("Count.%s.DOM.HtmlElement", name.c_str()), 0,
"Total number of HTML elements."),
html_elements_created_count_(0),
html_elements_destroyed_count_(0),
update_matching_rules_count_(0),
update_computed_style_count_(0),
are_stop_watches_enabled_(false) {
stop_watch_durations_.resize(kNumStopWatchTypes, base::TimeDelta());
}
DomStatTracker::~DomStatTracker() {
FlushPeriodicTracking();
// Verify that all of the elements were destroyed.
DCHECK_EQ(total_html_elements_, 0);
}
void DomStatTracker::FlushPeriodicTracking() {
// Update the CVals before clearing the periodic values.
total_html_elements_ +=
html_elements_created_count_ - html_elements_destroyed_count_;
// Now clear the values.
html_elements_created_count_ = 0;
html_elements_destroyed_count_ = 0;
update_matching_rules_count_ = 0;
update_computed_style_count_ = 0;
for (size_t i = 0; i < kNumStopWatchTypes; ++i) {
stop_watch_durations_[i] = base::TimeDelta();
}
}
void DomStatTracker::OnHtmlElementCreated() { ++html_elements_created_count_; }
void DomStatTracker::OnHtmlElementDestroyed() {
++html_elements_destroyed_count_;
}
void DomStatTracker::OnUpdateMatchingRules() { ++update_matching_rules_count_; }
void DomStatTracker::OnUpdateComputedStyle() { ++update_computed_style_count_; }
void DomStatTracker::EnableStopWatches() { are_stop_watches_enabled_ = true; }
void DomStatTracker::DisableStopWatches() { are_stop_watches_enabled_ = false; }
base::TimeDelta DomStatTracker::GetStopWatchTypeDuration(
StopWatchType type) const {
return stop_watch_durations_[type];
}
bool DomStatTracker::IsStopWatchEnabled(int /*id*/) const {
return are_stop_watches_enabled_;
}
void DomStatTracker::OnStopWatchStopped(int id, base::TimeDelta time_elapsed) {
stop_watch_durations_[static_cast<size_t>(id)] += time_elapsed;
}
} // namespace dom
} // namespace cobalt