forked from mirrors/gecko-dev
4997325757
Add ACTIVE_DOCGROUPS_PER_TABGROUP and TOTAL_DOCGROUPS_PER_TABGROUP to collect data on how many docgroups a tabgroup has whenever a top level content document associated with that tabgroup would hide. This gives a fairly accurate estimate of the number of docgroups a site uses. TOTAL_* counts all docgroups while ACTIVE_* only count docgroups with at least one document not in the bfcache.
145 lines
4.4 KiB
C++
145 lines
4.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef DocGroup_h
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#define DocGroup_h
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#include "nsISupportsImpl.h"
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#include "nsIPrincipal.h"
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#include "nsTHashtable.h"
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#include "nsString.h"
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#include "mozilla/dom/TabGroup.h"
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#include "mozilla/RefPtr.h"
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#include "mozilla/dom/CustomElementRegistry.h"
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#include "mozilla/dom/HTMLSlotElement.h"
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#include "mozilla/PerformanceCounter.h"
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namespace mozilla {
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class AbstractThread;
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namespace dom {
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class PerformanceInfo;
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// Two browsing contexts are considered "related" if they are reachable from one
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// another through window.opener, window.parent, or window.frames. This is the
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// spec concept of a "unit of related browsing contexts"
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//
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// Two browsing contexts are considered "similar-origin" if they can be made to
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// have the same origin by setting document.domain. This is the spec concept of
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// a "unit of similar-origin related browsing contexts"
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//
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// A TabGroup is a set of browsing contexts which are all "related". Within a
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// TabGroup, browsing contexts are broken into "similar-origin" DocGroups. In
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// more detail, a DocGroup is actually a collection of documents, and a
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// TabGroup is a collection of DocGroups. A TabGroup typically will contain
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// (through its DocGroups) the documents from one or more tabs related by
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// window.opener. A DocGroup is a member of exactly one TabGroup.
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class DocGroup final
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{
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public:
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typedef nsTArray<nsIDocument*>::iterator Iterator;
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friend class TabGroup;
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(DocGroup)
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// Returns NS_ERROR_FAILURE and sets |aString| to an empty string if the TLD
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// service isn't available. Returns NS_OK on success, but may still set
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// |aString| may still be set to an empty string.
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static MOZ_MUST_USE nsresult
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GetKey(nsIPrincipal* aPrincipal, nsACString& aString);
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bool MatchesKey(const nsACString& aKey)
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{
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return aKey == mKey;
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}
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PerformanceCounter* GetPerformanceCounter()
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{
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return mPerformanceCounter;
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}
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PerformanceInfo
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ReportPerformanceInfo();
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TabGroup* GetTabGroup()
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{
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return mTabGroup;
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}
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mozilla::dom::CustomElementReactionsStack* CustomElementReactionsStack()
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{
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MOZ_ASSERT(NS_IsMainThread());
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if (!mReactionsStack) {
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mReactionsStack = new mozilla::dom::CustomElementReactionsStack();
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}
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return mReactionsStack;
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}
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void RemoveDocument(nsIDocument* aWindow);
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// Iterators for iterating over every document within the DocGroup
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Iterator begin()
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{
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MOZ_ASSERT(NS_IsMainThread());
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return mDocuments.begin();
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}
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Iterator end()
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{
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MOZ_ASSERT(NS_IsMainThread());
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return mDocuments.end();
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}
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nsresult Dispatch(TaskCategory aCategory,
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already_AddRefed<nsIRunnable>&& aRunnable);
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nsISerialEventTarget* EventTargetFor(TaskCategory aCategory) const;
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AbstractThread*
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AbstractMainThreadFor(TaskCategory aCategory);
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// Ensure that it's valid to access the DocGroup at this time.
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void ValidateAccess() const
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{
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mTabGroup->ValidateAccess();
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}
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// Return a pointer that can be continually checked to see if access to this
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// DocGroup is valid. This pointer should live at least as long as the
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// DocGroup.
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bool* GetValidAccessPtr();
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// Append aSlot to the list of signal slot list, and queue a mutation observer
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// microtask.
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void SignalSlotChange(HTMLSlotElement& aSlot);
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void MoveSignalSlotListTo(nsTArray<RefPtr<HTMLSlotElement>>& aDest);
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// List of DocGroups that has non-empty signal slot list.
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static AutoTArray<RefPtr<DocGroup>, 2>* sPendingDocGroups;
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// Returns true if any of its documents are active but not in the bfcache.
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bool IsActive() const;
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private:
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DocGroup(TabGroup* aTabGroup, const nsACString& aKey);
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~DocGroup();
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nsCString mKey;
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RefPtr<TabGroup> mTabGroup;
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nsTArray<nsIDocument*> mDocuments;
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RefPtr<mozilla::dom::CustomElementReactionsStack> mReactionsStack;
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nsTArray<RefPtr<HTMLSlotElement>> mSignalSlotList;
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// This pointer will be null if dom.performance.enable_scheduler_timing is
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// false (default value)
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RefPtr<mozilla::PerformanceCounter> mPerformanceCounter;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // defined(DocGroup_h)
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