From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Fri, 19 Apr 2024 02:47:55 +0200
Subject: Adding upstream version 124.0.1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 gfx/ipc/RemoteCompositorSession.cpp | 101 ++++++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 gfx/ipc/RemoteCompositorSession.cpp

(limited to 'gfx/ipc/RemoteCompositorSession.cpp')

diff --git a/gfx/ipc/RemoteCompositorSession.cpp b/gfx/ipc/RemoteCompositorSession.cpp
new file mode 100644
index 0000000000..34b7cd4856
--- /dev/null
+++ b/gfx/ipc/RemoteCompositorSession.cpp
@@ -0,0 +1,101 @@
+/* -*- 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/. */
+
+#include "RemoteCompositorSession.h"
+#include "gfxPlatform.h"
+#include "mozilla/VsyncDispatcher.h"
+#include "mozilla/gfx/GPUProcessManager.h"
+#include "mozilla/layers/APZChild.h"
+#include "mozilla/layers/APZCTreeManagerChild.h"
+#include "mozilla/layers/CompositorBridgeChild.h"
+#include "mozilla/layers/GeckoContentController.h"
+#include "mozilla/Unused.h"
+#include "nsBaseWidget.h"
+#if defined(MOZ_WIDGET_ANDROID)
+#  include "mozilla/layers/UiCompositorControllerChild.h"
+#endif  // defined(MOZ_WIDGET_ANDROID)
+
+namespace mozilla {
+namespace layers {
+
+using namespace gfx;
+using namespace widget;
+
+RemoteCompositorSession::RemoteCompositorSession(
+    nsBaseWidget* aWidget, CompositorBridgeChild* aChild,
+    CompositorWidgetDelegate* aWidgetDelegate, APZCTreeManagerChild* aAPZ,
+    const LayersId& aRootLayerTreeId)
+    : CompositorSession(aWidget, aWidgetDelegate, aChild, aRootLayerTreeId),
+      mAPZ(aAPZ) {
+  MOZ_ASSERT(!gfxPlatform::IsHeadless());
+  GPUProcessManager::Get()->RegisterRemoteProcessSession(this);
+  if (mAPZ) {
+    mAPZ->SetCompositorSession(this);
+  }
+}
+
+RemoteCompositorSession::~RemoteCompositorSession() {
+  // This should have been shutdown first.
+  MOZ_ASSERT(!mCompositorBridgeChild);
+#if defined(MOZ_WIDGET_ANDROID)
+  MOZ_ASSERT(!mUiCompositorControllerChild);
+#endif  // defined(MOZ_WIDGET_ANDROID)
+}
+
+void RemoteCompositorSession::NotifySessionLost() {
+  // Hold a reference to mWidget since NotifyCompositorSessionLost may
+  // release the last reference mid-execution.
+  RefPtr<nsBaseWidget> widget(mWidget);
+  // Re-entrancy should be impossible: when we are being notified of a lost
+  // session, we have by definition not shut down yet. We will shutdown, but
+  // then will be removed from the notification list.
+  widget->NotifyCompositorSessionLost(this);
+}
+
+CompositorBridgeParent* RemoteCompositorSession::GetInProcessBridge() const {
+  return nullptr;
+}
+
+void RemoteCompositorSession::SetContentController(
+    GeckoContentController* aController) {
+  mContentController = aController;
+  mCompositorBridgeChild->SendPAPZConstructor(new APZChild(aController),
+                                              LayersId{0});
+}
+
+GeckoContentController* RemoteCompositorSession::GetContentController() {
+  return mContentController.get();
+}
+
+nsIWidget* RemoteCompositorSession::GetWidget() const { return mWidget; }
+
+RefPtr<IAPZCTreeManager> RemoteCompositorSession::GetAPZCTreeManager() const {
+  return mAPZ;
+}
+
+void RemoteCompositorSession::Shutdown() {
+  mContentController = nullptr;
+  if (mAPZ) {
+    mAPZ->SetCompositorSession(nullptr);
+    mAPZ->Destroy();
+  }
+  if (mCompositorBridgeChild) {
+    mCompositorBridgeChild->Destroy();
+    mCompositorBridgeChild = nullptr;
+  }
+  mCompositorWidgetDelegate = nullptr;
+  mWidget = nullptr;
+#if defined(MOZ_WIDGET_ANDROID)
+  if (mUiCompositorControllerChild) {
+    mUiCompositorControllerChild->Destroy();
+    mUiCompositorControllerChild = nullptr;
+  }
+#endif  // defined(MOZ_WIDGET_ANDROID)
+  GPUProcessManager::Get()->UnregisterRemoteProcessSession(this);
+}
+
+}  // namespace layers
+}  // namespace mozilla
-- 
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