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// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/platform/loader/fetch/stale_revalidation_resource_client.h"
#include "base/metrics/histogram_macros.h"
#include "third_party/blink/renderer/platform/loader/fetch/memory_cache.h"
namespace blink {
StaleRevalidationResourceClient::StaleRevalidationResourceClient(
Resource* stale_resource)
: start_time_(base::TimeTicks::Now()), stale_resource_(stale_resource) {}
StaleRevalidationResourceClient::~StaleRevalidationResourceClient() = default;
void StaleRevalidationResourceClient::NotifyFinished(Resource* resource) {
// After the load is finished
if (stale_resource_ && IsMainThread())
GetMemoryCache()->Remove(stale_resource_);
ClearResource();
base::TimeTicks response_end = resource->LoadResponseEnd();
if (!response_end.is_null()) {
UMA_HISTOGRAM_LONG_TIMES(
"Blink.ResourceFetcher.StaleWhileRevalidateDuration",
response_end - start_time_);
}
}
void StaleRevalidationResourceClient::Trace(Visitor* visitor) const {
visitor->Trace(stale_resource_);
RawResourceClient::Trace(visitor);
}
String StaleRevalidationResourceClient::DebugName() const {
return "StaleRevalidation";
}
} // namespace blink
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