Adding upstream version 86.0.1.upstream/86.0.1upstream

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

1 files changed, 105 insertions, 0 deletions

diff --git a/ipc/mscom/MainThreadHandoff.h b/ipc/mscom/MainThreadHandoff.h
new file mode 100644
index 0000000000..e790cea4b4
--- /dev/null
+++ b/ipc/mscom/MainThreadHandoff.h
@@ -0,0 +1,105 @@
+/* -*- 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_MainThreadHandoff_h
+#define mozilla_mscom_MainThreadHandoff_h
+
+#include <utility>
+
+#include "mozilla/Assertions.h"
+#include "mozilla/Mutex.h"
+#include "mozilla/mscom/Interceptor.h"
+#include "mozilla/mscom/MainThreadInvoker.h"
+#include "mozilla/mscom/Utils.h"
+#include "nsTArray.h"
+
+namespace mozilla {
+namespace mscom {
+
+// {9a907000-7829-47f1-80eb-f67a26f47b34}
+DEFINE_GUID(IID_IMainThreadHandoff, 0x9a907000, 0x7829, 0x47f1, 0x80, 0xeb,
+            0xf6, 0x7a, 0x26, 0xf4, 0x7b, 0x34);
+
+struct IMainThreadHandoff : public IInterceptorSink {
+  virtual STDMETHODIMP GetHandlerProvider(IHandlerProvider** aProvider) = 0;
+};
+
+struct ArrayData;
+
+class MainThreadHandoff final : public IMainThreadHandoff,
+                                public ICallFrameWalker {
+ public:
+  static HRESULT Create(IHandlerProvider* aHandlerProvider,
+                        IInterceptorSink** aOutput);
+
+  template <typename Interface>
+  static HRESULT WrapInterface(STAUniquePtr<Interface> aTargetInterface,
+                               Interface** aOutInterface) {
+    return WrapInterface<Interface>(std::move(aTargetInterface), nullptr,
+                                    aOutInterface);
+  }
+
+  template <typename Interface>
+  static HRESULT WrapInterface(STAUniquePtr<Interface> aTargetInterface,
+                               IHandlerProvider* aHandlerProvider,
+                               Interface** aOutInterface) {
+    MOZ_ASSERT(!IsProxy(aTargetInterface.get()));
+    RefPtr<IInterceptorSink> handoff;
+    HRESULT hr =
+        MainThreadHandoff::Create(aHandlerProvider, getter_AddRefs(handoff));
+    if (FAILED(hr)) {
+      return hr;
+    }
+    return CreateInterceptor(std::move(aTargetInterface), handoff,
+                             aOutInterface);
+  }
+
+  // IUnknown
+  STDMETHODIMP QueryInterface(REFIID riid, void** ppv) override;
+  STDMETHODIMP_(ULONG) AddRef() override;
+  STDMETHODIMP_(ULONG) Release() override;
+
+  // ICallFrameEvents
+  STDMETHODIMP OnCall(ICallFrame* aFrame) override;
+
+  // IInterceptorSink
+  STDMETHODIMP SetInterceptor(IWeakReference* aInterceptor) override;
+  STDMETHODIMP GetHandler(NotNull<CLSID*> aHandlerClsid) override;
+  STDMETHODIMP GetHandlerPayloadSize(NotNull<IInterceptor*> aInterceptor,
+                                     NotNull<DWORD*> aOutPayloadSize) override;
+  STDMETHODIMP WriteHandlerPayload(NotNull<IInterceptor*> aInterceptor,
+                                   NotNull<IStream*> aStream) override;
+  STDMETHODIMP_(REFIID) MarshalAs(REFIID aIid) override;
+  STDMETHODIMP DisconnectHandlerRemotes() override;
+  STDMETHODIMP IsInterfaceMaybeSupported(REFIID aIid) override;
+
+  // IMainThreadHandoff
+  STDMETHODIMP GetHandlerProvider(IHandlerProvider** aProvider) override {
+    RefPtr<IHandlerProvider> provider = mHandlerProvider;
+    provider.forget(aProvider);
+    return mHandlerProvider ? S_OK : S_FALSE;
+  }
+
+  // ICallFrameWalker
+  STDMETHODIMP OnWalkInterface(REFIID aIid, PVOID* aInterface, BOOL aIsInParam,
+                               BOOL aIsOutParam) override;
+
+ private:
+  explicit MainThreadHandoff(IHandlerProvider* aHandlerProvider);
+  ~MainThreadHandoff();
+  HRESULT FixArrayElements(ICallFrame* aFrame, const ArrayData& aArrayData);
+  HRESULT FixIServiceProvider(ICallFrame* aFrame);
+
+ private:
+  ULONG mRefCnt;
+  RefPtr<IWeakReference> mInterceptor;
+  RefPtr<IHandlerProvider> mHandlerProvider;
+};
+
+}  // namespace mscom
+}  // namespace mozilla
+
+#endif  // mozilla_mscom_MainThreadHandoff_h