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-rw-r--r--dom/worklet/WorkletImpl.cpp152
1 files changed, 152 insertions, 0 deletions
diff --git a/dom/worklet/WorkletImpl.cpp b/dom/worklet/WorkletImpl.cpp
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+++ b/dom/worklet/WorkletImpl.cpp
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+/* -*- 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 https://mozilla.org/MPL/2.0/. */
+
+#include "WorkletImpl.h"
+
+#include "Worklet.h"
+#include "WorkletThread.h"
+
+#include "mozilla/BasePrincipal.h"
+#include "mozilla/NullPrincipal.h"
+#include "mozilla/dom/DocGroup.h"
+#include "mozilla/dom/RegisterWorkletBindings.h"
+#include "mozilla/dom/ScriptSettings.h"
+#include "mozilla/dom/WorkletBinding.h"
+#include "mozilla/dom/WorkletGlobalScope.h"
+#include "mozilla/dom/worklet/WorkletModuleLoader.h"
+#include "nsGlobalWindowInner.h"
+
+using mozilla::dom::loader::WorkletModuleLoader;
+using mozilla::dom::loader::WorkletScriptLoader;
+
+namespace mozilla {
+// ---------------------------------------------------------------------------
+// WorkletLoadInfo
+
+WorkletLoadInfo::WorkletLoadInfo(nsPIDOMWindowInner* aWindow)
+ : mInnerWindowID(aWindow->WindowID()) {
+ MOZ_ASSERT(NS_IsMainThread());
+ nsPIDOMWindowOuter* outerWindow = aWindow->GetOuterWindow();
+ if (outerWindow) {
+ mOuterWindowID = outerWindow->WindowID();
+ } else {
+ mOuterWindowID = 0;
+ }
+}
+
+// ---------------------------------------------------------------------------
+// WorkletImpl
+
+WorkletImpl::WorkletImpl(nsPIDOMWindowInner* aWindow, nsIPrincipal* aPrincipal)
+ : mPrincipal(NullPrincipal::CreateWithInheritedAttributes(aPrincipal)),
+ mWorkletLoadInfo(aWindow),
+ mTerminated(false),
+ mFinishedOnExecutionThread(false),
+ mTrials(OriginTrials::FromWindow(nsGlobalWindowInner::Cast(aWindow))) {
+ Unused << NS_WARN_IF(
+ NS_FAILED(ipc::PrincipalToPrincipalInfo(mPrincipal, &mPrincipalInfo)));
+
+ if (aWindow->GetDocGroup()) {
+ mAgentClusterId.emplace(aWindow->GetDocGroup()->AgentClusterId());
+ }
+
+ mSharedMemoryAllowed =
+ nsGlobalWindowInner::Cast(aWindow)->IsSharedMemoryAllowed();
+
+ mShouldResistFingerprinting = aWindow->AsGlobal()->ShouldResistFingerprinting(
+ RFPTarget::IsAlwaysEnabledForPrecompute);
+}
+
+WorkletImpl::~WorkletImpl() { MOZ_ASSERT(!mGlobalScope); }
+
+JSObject* WorkletImpl::WrapWorklet(JSContext* aCx, dom::Worklet* aWorklet,
+ JS::Handle<JSObject*> aGivenProto) {
+ MOZ_ASSERT(NS_IsMainThread());
+ return dom::Worklet_Binding::Wrap(aCx, aWorklet, aGivenProto);
+}
+
+dom::WorkletGlobalScope* WorkletImpl::GetGlobalScope() {
+ dom::WorkletThread::AssertIsOnWorkletThread();
+
+ if (mGlobalScope) {
+ return mGlobalScope;
+ }
+ if (mFinishedOnExecutionThread) {
+ return nullptr;
+ }
+
+ dom::AutoJSAPI jsapi;
+ jsapi.Init();
+ JSContext* cx = jsapi.cx();
+
+ mGlobalScope = ConstructGlobalScope();
+
+ JS::Rooted<JSObject*> global(cx);
+ NS_ENSURE_TRUE(mGlobalScope->WrapGlobalObject(cx, &global), nullptr);
+
+ JSAutoRealm ar(cx, global);
+
+ // Init Web IDL bindings
+ if (!dom::RegisterWorkletBindings(cx, global)) {
+ return nullptr;
+ }
+
+ JS_FireOnNewGlobalObject(cx, global);
+
+ MOZ_ASSERT(!mGlobalScope->GetModuleLoader(cx));
+
+ RefPtr<WorkletScriptLoader> scriptLoader = new WorkletScriptLoader();
+ RefPtr<WorkletModuleLoader> moduleLoader =
+ new WorkletModuleLoader(scriptLoader, mGlobalScope);
+ mGlobalScope->InitModuleLoader(moduleLoader);
+
+ return mGlobalScope;
+}
+
+void WorkletImpl::NotifyWorkletFinished() {
+ MOZ_ASSERT(NS_IsMainThread());
+
+ if (mTerminated) {
+ return;
+ }
+
+ // Release global scope on its thread.
+ SendControlMessage(
+ NS_NewRunnableFunction("WorkletImpl::NotifyWorkletFinished",
+ [self = RefPtr<WorkletImpl>(this)]() {
+ self->mFinishedOnExecutionThread = true;
+ self->mGlobalScope = nullptr;
+ }));
+
+ mTerminated = true;
+ if (mWorkletThread) {
+ mWorkletThread->Terminate();
+ mWorkletThread = nullptr;
+ }
+}
+
+nsresult WorkletImpl::SendControlMessage(
+ already_AddRefed<nsIRunnable> aRunnable) {
+ MOZ_ASSERT(NS_IsMainThread());
+ RefPtr<nsIRunnable> runnable = std::move(aRunnable);
+
+ // TODO: bug 1492011 re ConsoleWorkletRunnable.
+ if (mTerminated) {
+ return NS_ERROR_ILLEGAL_DURING_SHUTDOWN;
+ }
+
+ if (!mWorkletThread) {
+ // Thread creation. FIXME: this will change.
+ mWorkletThread = dom::WorkletThread::Create(this);
+ if (!mWorkletThread) {
+ return NS_ERROR_ILLEGAL_DURING_SHUTDOWN;
+ }
+ }
+
+ return mWorkletThread->DispatchRunnable(runnable.forget());
+}
+
+} // namespace mozilla