1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
10 #include "mozilla/Assertions.h"
11 #include "mozilla/dom/StructuredCloneTags.h"
16 struct WorkerPrincipal final
: public JSPrincipals
{
17 bool write(JSContext
* aCx
, JSStructuredCloneWriter
* aWriter
) override
{
18 return JS_WriteUint32Pair(aWriter
, SCTAG_DOM_WORKER_PRINCIPAL
, 0);
22 JSPrincipals
* GetWorkerPrincipal() {
23 static WorkerPrincipal sPrincipal
;
26 * To make sure the the principals refcount is initialized to one, atomically
27 * increment it on every pass though this function. If we discover this wasn't
28 * the first time, decrement it again. This avoids the need for
31 int32_t prevRefcount
= sPrincipal
.refcount
++;
32 if (prevRefcount
> 0) {
33 --sPrincipal
.refcount
;
36 sPrincipal
.debugToken
= workerinternals::kJSPrincipalsDebugToken
;
43 void DestroyWorkerPrincipals(JSPrincipals
* aPrincipals
) {
44 MOZ_ASSERT_UNREACHABLE(
45 "Worker principals refcount should never fall below one");
49 } // namespace mozilla