summaryrefslogtreecommitdiffstats
path: root/dom/workers/Principal.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'dom/workers/Principal.cpp')
-rw-r--r--dom/workers/Principal.cpp51
1 files changed, 51 insertions, 0 deletions
diff --git a/dom/workers/Principal.cpp b/dom/workers/Principal.cpp
new file mode 100644
index 000000000..8fcd9ed10
--- /dev/null
+++ b/dom/workers/Principal.cpp
@@ -0,0 +1,51 @@
+/* -*- 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 "Principal.h"
+
+#include "jsapi.h"
+#include "mozilla/Assertions.h"
+
+BEGIN_WORKERS_NAMESPACE
+
+struct WorkerPrincipal final : public JSPrincipals
+{
+ bool write(JSContext* aCx, JSStructuredCloneWriter* aWriter) override {
+ MOZ_CRASH("WorkerPrincipal::write not implemented");
+ return false;
+ }
+};
+
+JSPrincipals*
+GetWorkerPrincipal()
+{
+ static WorkerPrincipal sPrincipal;
+
+ /*
+ * To make sure the the principals refcount is initialized to one, atomically
+ * increment it on every pass though this function. If we discover this wasn't
+ * the first time, decrement it again. This avoids the need for
+ * synchronization.
+ */
+ int32_t prevRefcount = sPrincipal.refcount++;
+ if (prevRefcount > 0) {
+ --sPrincipal.refcount;
+ } else {
+#ifdef DEBUG
+ sPrincipal.debugToken = kJSPrincipalsDebugToken;
+#endif
+ }
+
+ return &sPrincipal;
+}
+
+void
+DestroyWorkerPrincipals(JSPrincipals* aPrincipals)
+{
+ MOZ_ASSERT_UNREACHABLE("Worker principals refcount should never fall below one");
+}
+
+END_WORKERS_NAMESPACE