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-rw-r--r--dom/base/TestUtils.cpp50
1 files changed, 50 insertions, 0 deletions
diff --git a/dom/base/TestUtils.cpp b/dom/base/TestUtils.cpp
new file mode 100644
index 0000000000..6e4803d8ab
--- /dev/null
+++ b/dom/base/TestUtils.cpp
@@ -0,0 +1,50 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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/TestUtils.h"
+#include "mozilla/dom/TestUtilsBinding.h"
+
+#include "mozilla/ErrorResult.h"
+#include "mozilla/dom/Promise.h"
+#include "mozilla/dom/WorkerCommon.h"
+#include "mozilla/dom/WorkerPrivate.h"
+#include "nsJSEnvironment.h"
+#include "xpcpublic.h"
+
+namespace mozilla::dom {
+
+already_AddRefed<Promise> TestUtils::Gc(const GlobalObject& aGlobal,
+ ErrorResult& aRv) {
+ nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());
+ RefPtr<Promise> promise = Promise::Create(global, aRv);
+ if (NS_WARN_IF(aRv.Failed())) {
+ return nullptr;
+ }
+
+ // TODO(krosylight): Ideally we could use nsJSContext::IncrementalGC to make
+ // it actually async, but that's not required right now.
+
+ NS_DispatchToCurrentThread(
+ NS_NewCancelableRunnableFunction("TestUtils::Gc", [promise] {
+ if (NS_IsMainThread()) {
+ nsJSContext::GarbageCollectNow(JS::GCReason::DOM_TESTUTILS,
+ nsJSContext::NonShrinkingGC);
+ nsJSContext::CycleCollectNow(CCReason::API);
+ } else {
+ WorkerPrivate* workerPrivate = GetCurrentThreadWorkerPrivate();
+ workerPrivate->GarbageCollectInternal(workerPrivate->GetJSContext(),
+ false /* shrinking */,
+ false /* collect children */);
+ workerPrivate->CycleCollectInternal(false);
+ }
+
+ promise->MaybeResolveWithUndefined();
+ }));
+
+ return promise.forget();
+}
+
+} // namespace mozilla::dom