gecko-dev/dom/base/DocGroup.cpp

181 строка
5.0 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/DocGroup.h"
#include "mozilla/dom/DOMTypes.h"
#include "mozilla/dom/TabGroup.h"
#include "mozilla/Telemetry.h"
#include "nsIDocShell.h"
#include "nsDOMMutationObserver.h"
#if defined(XP_WIN)
#include <processthreadsapi.h> // for GetCurrentProcessId()
#else
#include <unistd.h> // for getpid()
#endif // defined(XP_WIN)
namespace mozilla {
namespace dom {
AutoTArray<RefPtr<DocGroup>, 2>* DocGroup::sPendingDocGroups = nullptr;
/* static */ nsresult
DocGroup::GetKey(nsIPrincipal* aPrincipal, nsACString& aKey)
{
// Use GetBaseDomain() to handle things like file URIs, IP address URIs,
// etc. correctly.
nsresult rv = aPrincipal->GetBaseDomain(aKey);
if (NS_FAILED(rv)) {
// We don't really know what to do here. But we should be conservative,
// otherwise it would be possible to reorder two events incorrectly in the
// future if we interrupt at the DocGroup level, so to be safe, use an
// empty string to classify all such documents as belonging to the same
// DocGroup.
aKey.Truncate();
}
return rv;
}
void
DocGroup::RemoveDocument(nsIDocument* aDocument)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mDocuments.Contains(aDocument));
mDocuments.RemoveElement(aDocument);
}
DocGroup::DocGroup(TabGroup* aTabGroup, const nsACString& aKey)
: mKey(aKey), mTabGroup(aTabGroup)
{
// This method does not add itself to mTabGroup->mDocGroups as the caller does it for us.
#ifndef RELEASE_OR_BETA
mPerformanceCounter = new mozilla::PerformanceCounter(aKey);
#endif
}
DocGroup::~DocGroup()
{
MOZ_ASSERT(mDocuments.IsEmpty());
if (!NS_IsMainThread()) {
nsIEventTarget* target = EventTargetFor(TaskCategory::Other);
NS_ProxyRelease("DocGroup::mReactionsStack", target, mReactionsStack.forget());
}
mTabGroup->mDocGroups.RemoveEntry(mKey);
}
#ifndef RELEASE_OR_BETA
PerformanceInfo
DocGroup::ReportPerformanceInfo()
{
AssertIsOnMainThread();
#if defined(XP_WIN)
uint32_t pid = GetCurrentProcessId();
#else
uint32_t pid = getpid();
#endif
uint64_t wid = 0;
uint64_t pwid = 0;
uint16_t count = 0;
uint64_t duration = 0;
nsCString host = NS_LITERAL_CSTRING("None");
for (const auto& document : *this) {
// grabbing the host name of the first document
nsCOMPtr<nsIDocument> doc = do_QueryInterface(document);
MOZ_ASSERT(doc);
nsCOMPtr<nsIURI> docURI = doc->GetDocumentURI();
if (!docURI) {
continue;
}
docURI->GetHost(host);
wid = doc->OuterWindowID();
// getting the top window id - if not possible
// pwid gets the same value than wid
pwid = wid;
nsPIDOMWindowInner* win = doc->GetInnerWindow();
if (win) {
nsPIDOMWindowOuter* outer = win->GetOuterWindow();
if (outer) {
nsCOMPtr<nsPIDOMWindowOuter> top = outer->GetTop();
if (top) {
pwid = top->WindowID();
}
}
}
}
duration = mPerformanceCounter->GetExecutionDuration();
FallibleTArray<CategoryDispatch> items;
// now that we have the host and window ids, let's look at the perf counters
for (uint32_t index = 0; index < (uint32_t)TaskCategory::Count; index++) {
TaskCategory category = static_cast<TaskCategory>(index);
count = mPerformanceCounter->GetDispatchCount(DispatchCategory(category));
CategoryDispatch item = CategoryDispatch(index, count);
if (!items.AppendElement(item, fallible)) {
NS_ERROR("Could not complete the operation");
return PerformanceInfo(host, pid, wid, pwid, duration, false, items);
}
}
// setting back all counters to zero
mPerformanceCounter->ResetPerformanceCounters();
return PerformanceInfo(host, pid, wid, pwid, duration, false, items);
}
#endif
nsresult
DocGroup::Dispatch(TaskCategory aCategory,
already_AddRefed<nsIRunnable>&& aRunnable)
{
#ifndef RELEASE_OR_BETA
mPerformanceCounter->IncrementDispatchCounter(DispatchCategory(aCategory));
#endif
return mTabGroup->DispatchWithDocGroup(aCategory, Move(aRunnable), this);
}
nsISerialEventTarget*
DocGroup::EventTargetFor(TaskCategory aCategory) const
{
return mTabGroup->EventTargetFor(aCategory);
}
AbstractThread*
DocGroup::AbstractMainThreadFor(TaskCategory aCategory)
{
MOZ_RELEASE_ASSERT(NS_IsMainThread());
return mTabGroup->AbstractMainThreadFor(aCategory);
}
bool*
DocGroup::GetValidAccessPtr()
{
return mTabGroup->GetValidAccessPtr();
}
void
DocGroup::SignalSlotChange(const HTMLSlotElement* aSlot)
{
if (mSignalSlotList.Contains(aSlot)) {
return;
}
mSignalSlotList.AppendElement(const_cast<HTMLSlotElement*>(aSlot));
if (!sPendingDocGroups) {
// Queue a mutation observer compound microtask.
nsDOMMutationObserver::QueueMutationObserverMicroTask();
sPendingDocGroups = new AutoTArray<RefPtr<DocGroup>, 2>;
}
sPendingDocGroups->AppendElement(this);
}
}
}