1 files changed, 53 insertions, 0 deletions
diff --git a/security/sandbox/common/test/SandboxTestingThread.h b/security/sandbox/common/test/SandboxTestingThread.h
new file mode 100644
index 0000000000..f85a017f94
--- /dev/null
+++ b/security/sandbox/common/test/SandboxTestingThread.h
@@ -0,0 +1,53 @@
+/* -*- 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/. */
+
+#ifndef mozilla_SandboxTestingThread_h
+#define mozilla_SandboxTestingThread_h
+
+#include "nsThreadManager.h"
+
+#if !defined(MOZ_SANDBOX) || !defined(MOZ_DEBUG) || !defined(ENABLE_TESTS)
+#  error "This file should not be used outside of debug with tests"
+#endif
+
+namespace mozilla {
+
+class SandboxTestingThread {
+ public:
+  void Dispatch(already_AddRefed<nsIRunnable>&& aRunnable) {
+    mThread->Dispatch(std::move(aRunnable), nsIEventTarget::NS_DISPATCH_NORMAL);
+  }
+
+  bool IsOnThread() {
+    bool on;
+    return NS_SUCCEEDED(mThread->IsOnCurrentThread(&on)) && on;
+  }
+
+  static SandboxTestingThread* Create() {
+    MOZ_RELEASE_ASSERT(NS_IsMainThread());
+    nsCOMPtr<nsIThread> thread;
+    if (NS_FAILED(
+            NS_NewNamedThread("Sandbox Testing", getter_AddRefs(thread)))) {
+      return nullptr;
+    }
+    return new SandboxTestingThread(thread);
+  }
+
+  ~SandboxTestingThread() {
+    NS_DispatchToMainThread(NewRunnableMethod("~SandboxTestingThread", mThread,
+                                              &nsIThread::Shutdown));
+  }
+
+ private:
+  explicit SandboxTestingThread(nsIThread* aThread) : mThread(aThread) {
+    MOZ_ASSERT(mThread);
+  }
+
+  nsCOMPtr<nsIThread> mThread;
+};
+}  // namespace mozilla
+
+#endif  // mozilla_SandboxTestingThread_h