Adding upstream version 124.0.1.upstream/124.0.1

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

1 files changed, 66 insertions, 0 deletions

diff --git a/dom/canvas/WebGLChild.h b/dom/canvas/WebGLChild.h
new file mode 100644
index 0000000000..6848237d8f
--- /dev/null
+++ b/dom/canvas/WebGLChild.h
@@ -0,0 +1,66 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 WEBGLCHILD_H_
+#define WEBGLCHILD_H_
+
+#include "mozilla/dom/PWebGLChild.h"
+#include "mozilla/ipc/BigBuffer.h"
+#include "mozilla/Maybe.h"
+#include "mozilla/WeakPtr.h"
+
+#include <string>
+
+namespace mozilla {
+
+class ClientWebGLContext;
+
+namespace dom {
+
+struct FlushedCmdInfo final {
+  size_t flushes = 0;
+  // Store a number of flushes since last IPC congestion check.
+  // It is reset to 0, when current IPC congestion check is done.
+  size_t flushesSinceLastCongestionCheck = 0;
+  // Incremented for each IPC congestion check.
+  size_t congestionCheckGeneration = 0;
+  size_t flushedCmdBytes = 0;
+  size_t overhead = 0;
+};
+
+class WebGLChild final : public PWebGLChild, public SupportsWeakPtr {
+  const WeakPtr<ClientWebGLContext> mContext;
+  const size_t mDefaultCmdsShmemSize;
+  mozilla::ipc::BigBuffer mPendingCmdsShmem;
+  size_t mPendingCmdsPos = 0;
+  size_t mPendingCmdsAlignmentOverhead = 0;
+  FlushedCmdInfo mFlushedCmdInfo;
+
+ public:
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(WebGLChild, override);
+
+  explicit WebGLChild(ClientWebGLContext&);
+
+  Maybe<Range<uint8_t>> AllocPendingCmdBytes(size_t,
+                                             size_t fyiAlignmentOverhead);
+  void FlushPendingCmds();
+  void Destroy();
+  void ActorDestroy(ActorDestroyReason why) override;
+
+  FlushedCmdInfo& GetFlushedCmdInfo() { return mFlushedCmdInfo; }
+
+ private:
+  friend PWebGLChild;
+  virtual ~WebGLChild();
+
+ public:
+  mozilla::ipc::IPCResult RecvJsWarning(const std::string&) const;
+  mozilla::ipc::IPCResult RecvOnContextLoss(webgl::ContextLossReason) const;
+};
+
+}  // namespace dom
+}  // namespace mozilla
+
+#endif  // WEBGLCHILD_H_