1 files changed, 76 insertions, 0 deletions
diff --git a/ipc/mscom/ProcessRuntime.h b/ipc/mscom/ProcessRuntime.h
new file mode 100644
index 0000000000..093ebe2f22
--- /dev/null
+++ b/ipc/mscom/ProcessRuntime.h
@@ -0,0 +1,76 @@
+/* -*- 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/. */
+
+#ifndef mozilla_mscom_ProcessRuntime_h
+#define mozilla_mscom_ProcessRuntime_h
+
+#include "mozilla/Attributes.h"
+#if defined(ACCESSIBILITY) && defined(MOZILLA_INTERNAL_API)
+#  include "mozilla/mscom/ActivationContext.h"
+#endif  // defined(ACCESSIBILITY) && defined(MOZILLA_INTERNAL_API)
+#include "mozilla/mscom/ApartmentRegion.h"
+#include "mozilla/WindowsProcessMitigations.h"
+#include "nsXULAppAPI.h"
+
+namespace mozilla {
+namespace mscom {
+
+class MOZ_NON_TEMPORARY_CLASS ProcessRuntime final {
+#if !defined(MOZILLA_INTERNAL_API)
+ public:
+#endif  // defined(MOZILLA_INTERNAL_API)
+  enum class ProcessCategory {
+    GeckoBrowserParent,
+    // We give Launcher its own process category, but internally to this class
+    // it should be treated identically to GeckoBrowserParent.
+    Launcher = GeckoBrowserParent,
+    GeckoChild,
+    Service,
+  };
+
+  // This constructor is only public when compiled outside of XUL
+  explicit ProcessRuntime(ProcessCategory aProcessCategory);
+
+ public:
+#if defined(MOZILLA_INTERNAL_API)
+  ProcessRuntime() : ProcessRuntime(XRE_GetProcessType()) {}
+#endif  // defined(MOZILLA_INTERNAL_API)
+
+  explicit ProcessRuntime(GeckoProcessType aProcessType);
+
+  ~ProcessRuntime() = default;
+
+  explicit operator bool() const { return SUCCEEDED(mInitResult); }
+  HRESULT GetHResult() const { return mInitResult; }
+
+  ProcessRuntime(ProcessRuntime&) = delete;
+  ProcessRuntime(ProcessRuntime&&) = delete;
+  ProcessRuntime& operator=(ProcessRuntime&) = delete;
+  ProcessRuntime& operator=(ProcessRuntime&&) = delete;
+
+  /**
+   * @return 0 if call is in-process or resolving the calling thread failed,
+   *         otherwise contains the thread id of the calling thread.
+   */
+  static DWORD GetClientThreadId();
+
+ private:
+  void InitInsideApartment();
+  HRESULT InitializeSecurity();
+  static COINIT GetDesiredApartmentType(ProcessCategory aProcessCategory);
+
+  HRESULT mInitResult;
+  const ProcessCategory mProcessCategory;
+#if defined(ACCESSIBILITY) && defined(MOZILLA_INTERNAL_API)
+  ActivationContextRegion mActCtxRgn;
+#endif  // defined(ACCESSIBILITY) && defined(MOZILLA_INTERNAL_API)
+  ApartmentRegion mAptRegion;
+};
+
+}  // namespace mscom
+}  // namespace mozilla
+
+#endif  // mozilla_mscom_ProcessRuntime_h