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content / browser / renderer_host / navigation_state_keep_alive.cc [blame]
// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/renderer_host/navigation_state_keep_alive.h"
#include <utility>
#include "content/browser/renderer_host/policy_container_host.h"
#include "content/browser/renderer_host/render_process_host_impl.h"
#include "content/browser/site_instance_group.h"
#include "content/browser/site_instance_impl.h"
#include "content/browser/storage_partition_impl.h"
namespace content {
NavigationStateKeepAlive::NavigationStateKeepAlive(
const blink::LocalFrameToken& token,
scoped_refptr<PolicyContainerHost> policy_container_host,
scoped_refptr<SiteInstanceImpl> source_site_instance)
: frame_token_(token),
storage_partition_(static_cast<StoragePartitionImpl*>(
source_site_instance->GetBrowserContext()->GetStoragePartition(
source_site_instance.get()))),
policy_container_host_(std::move(policy_container_host)),
source_site_instance_(std::move(source_site_instance)) {
CHECK(source_site_instance_->group());
source_site_instance_->group()->IncrementKeepAliveCount();
}
NavigationStateKeepAlive::~NavigationStateKeepAlive() {
// The SiteInstance should have a group, but during shutdown, this may not be
// the case. Because destruction notification through BrowserContext happens
// later than this call, having a group is not enforced.
if (source_site_instance_->group()) {
source_site_instance_->group()->DecrementKeepAliveCount();
}
// There are two pointers to `this` in StoragePartition. One in the
// ReceiverSet, which owns `this`, and another in the
// NavigationStateKeepAliveMap. When `this` gets removed from the
// ReceiverSet, also remove the map entry to avoid dangling pointers.
storage_partition_->RemoveKeepAliveHandleFromMap(frame_token_, this);
}
} // namespace content