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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "PerformanceObserver.h"
#include "mozilla/dom/Performance.h"
#include "mozilla/dom/PerformanceBinding.h"
#include "mozilla/dom/PerformanceEntryBinding.h"
#include "mozilla/dom/PerformanceObserverBinding.h"
#include "nsPIDOMWindow.h"
#include "nsQueryObject.h"
#include "nsString.h"
#include "PerformanceEntry.h"
#include "PerformanceObserverEntryList.h"
#include "WorkerPrivate.h"
#include "WorkerScope.h"
using namespace mozilla;
using namespace mozilla::dom;
using namespace mozilla::dom::workers;
NS_IMPL_CYCLE_COLLECTION_CLASS(PerformanceObserver)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(PerformanceObserver)
tmp->Disconnect();
NS_IMPL_CYCLE_COLLECTION_UNLINK(mCallback)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mPerformance)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mOwner)
NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(PerformanceObserver)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mCallback)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mPerformance)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mOwner)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(PerformanceObserver)
NS_IMPL_CYCLE_COLLECTING_ADDREF(PerformanceObserver)
NS_IMPL_CYCLE_COLLECTING_RELEASE(PerformanceObserver)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(PerformanceObserver)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
PerformanceObserver::PerformanceObserver(nsPIDOMWindowInner* aOwner,
PerformanceObserverCallback& aCb)
: mOwner(aOwner)
, mCallback(&aCb)
, mConnected(false)
{
MOZ_ASSERT(mOwner);
mPerformance = aOwner->GetPerformance();
}
PerformanceObserver::PerformanceObserver(WorkerPrivate* aWorkerPrivate,
PerformanceObserverCallback& aCb)
: mCallback(&aCb)
, mConnected(false)
{
MOZ_ASSERT(aWorkerPrivate);
mPerformance = aWorkerPrivate->GlobalScope()->GetPerformance();
}
PerformanceObserver::~PerformanceObserver()
{
Disconnect();
MOZ_ASSERT(!mConnected);
}
// static
already_AddRefed<PerformanceObserver>
PerformanceObserver::Constructor(const GlobalObject& aGlobal,
PerformanceObserverCallback& aCb,
ErrorResult& aRv)
{
if (NS_IsMainThread()) {
nsCOMPtr<nsPIDOMWindowInner> ownerWindow =
do_QueryInterface(aGlobal.GetAsSupports());
if (!ownerWindow) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
MOZ_ASSERT(ownerWindow->IsInnerWindow());
RefPtr<PerformanceObserver> observer =
new PerformanceObserver(ownerWindow, aCb);
return observer.forget();
}
JSContext* cx = aGlobal.Context();
WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(cx);
MOZ_ASSERT(workerPrivate);
RefPtr<PerformanceObserver> observer =
new PerformanceObserver(workerPrivate, aCb);
return observer.forget();
}
JSObject*
PerformanceObserver::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return PerformanceObserverBinding::Wrap(aCx, this, aGivenProto);
}
void
PerformanceObserver::Notify()
{
if (mQueuedEntries.IsEmpty()) {
return;
}
RefPtr<PerformanceObserverEntryList> list =
new PerformanceObserverEntryList(this, mQueuedEntries);
mQueuedEntries.Clear();
ErrorResult rv;
mCallback->Call(this, *list, *this, rv);
if (NS_WARN_IF(rv.Failed())) {
rv.SuppressException();
}
}
void
PerformanceObserver::QueueEntry(PerformanceEntry* aEntry)
{
MOZ_ASSERT(aEntry);
nsAutoString entryType;
aEntry->GetEntryType(entryType);
if (!mEntryTypes.Contains<nsString>(entryType)) {
return;
}
mQueuedEntries.AppendElement(aEntry);
}
static const char16_t *const sValidTypeNames[4] = {
u"mark",
u"measure",
u"resource",
u"server"
};
void
PerformanceObserver::Observe(const PerformanceObserverInit& aOptions,
ErrorResult& aRv)
{
if (aOptions.mEntryTypes.IsEmpty()) {
aRv.Throw(NS_ERROR_DOM_TYPE_ERR);
return;
}
nsTArray<nsString> validEntryTypes;
for (const char16_t* name : sValidTypeNames) {
nsDependentString validTypeName(name);
if (aOptions.mEntryTypes.Contains<nsString>(validTypeName) &&
!validEntryTypes.Contains<nsString>(validTypeName)) {
validEntryTypes.AppendElement(validTypeName);
}
}
if (validEntryTypes.IsEmpty()) {
aRv.Throw(NS_ERROR_DOM_TYPE_ERR);
return;
}
mEntryTypes.SwapElements(validEntryTypes);
mPerformance->AddObserver(this);
if (aOptions.mBuffered) {
for (auto entryType : mEntryTypes) {
nsTArray<RefPtr<PerformanceEntry>> existingEntries;
mPerformance->GetEntriesByType(entryType, existingEntries);
if (!existingEntries.IsEmpty()) {
mQueuedEntries.AppendElements(existingEntries);
}
}
}
mConnected = true;
}
void
PerformanceObserver::Disconnect()
{
if (mConnected) {
MOZ_ASSERT(mPerformance);
mPerformance->RemoveObserver(this);
mConnected = false;
}
}
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