Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 70 insertions, 0 deletions

diff --git a/ipc/glue/Neutering.h b/ipc/glue/Neutering.h
new file mode 100644
index 0000000000..44cbe042ae
--- /dev/null
+++ b/ipc/glue/Neutering.h
@@ -0,0 +1,70 @@
+/* -*- 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_ipc_Neutering_h
+#define mozilla_ipc_Neutering_h
+
+/**
+ * This header declares RAII wrappers for Window neutering. See
+ * WindowsMessageLoop.cpp for more details.
+ */
+
+namespace mozilla {
+namespace ipc {
+
+/**
+ * This class is a RAII wrapper around Window neutering. As long as a
+ * NeuteredWindowRegion object is instantiated, Win32 windows belonging to the
+ * current thread will be neutered. It is safe to nest multiple instances of
+ * this class.
+ */
+class MOZ_RAII NeuteredWindowRegion {
+ public:
+  explicit NeuteredWindowRegion(bool aDoNeuter);
+  ~NeuteredWindowRegion();
+
+  /**
+   * This function clears any backlog of nonqueued messages that are pending for
+   * the current thread.
+   */
+  void PumpOnce();
+
+ private:
+  bool mNeuteredByThis;
+};
+
+/**
+ * This class is analagous to MutexAutoUnlock for Mutex; it is an RAII class
+ * that is to be instantiated within a NeuteredWindowRegion, thus temporarily
+ * disabling neutering for the remainder of its enclosing block.
+ * @see NeuteredWindowRegion
+ */
+class MOZ_RAII DeneuteredWindowRegion {
+ public:
+  explicit DeneuteredWindowRegion();
+  ~DeneuteredWindowRegion();
+
+ private:
+  bool mReneuter;
+};
+
+class MOZ_RAII SuppressedNeuteringRegion {
+ public:
+  explicit SuppressedNeuteringRegion();
+  ~SuppressedNeuteringRegion();
+
+  static inline bool IsNeuteringSuppressed() { return sSuppressNeutering; }
+
+ private:
+  bool mReenable;
+
+  static bool sSuppressNeutering;
+};
+
+}  // namespace ipc
+}  // namespace mozilla
+
+#endif  // mozilla_ipc_Neutering_h