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68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef WEBGLCHILD_H_
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#define WEBGLCHILD_H_
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#include "mozilla/dom/PWebGLChild.h"
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#include "mozilla/ipc/BigBuffer.h"
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#include "mozilla/Maybe.h"
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#include "mozilla/WeakPtr.h"
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#include <string>
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namespace mozilla {
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class ClientWebGLContext;
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namespace dom {
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struct FlushedCmdInfo final {
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size_t flushes = 0;
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// Store a number of flushes since last IPC congestion check.
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// It is reset to 0, when current IPC congestion check is done.
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size_t flushesSinceLastCongestionCheck = 0;
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// Incremented for each IPC congestion check.
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size_t congestionCheckGeneration = 0;
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size_t flushedCmdBytes = 0;
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size_t overhead = 0;
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};
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class WebGLChild final : public PWebGLChild, public SupportsWeakPtr {
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const WeakPtr<ClientWebGLContext> mContext;
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const size_t mDefaultCmdsShmemSize;
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mozilla::ipc::BigBuffer mPendingCmdsShmem;
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size_t mPendingCmdsPos = 0;
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size_t mPendingCmdsAlignmentOverhead = 0;
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FlushedCmdInfo mFlushedCmdInfo;
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public:
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(WebGLChild, override);
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explicit WebGLChild(ClientWebGLContext&);
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Maybe<Range<uint8_t>> AllocPendingCmdBytes(size_t,
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size_t fyiAlignmentOverhead);
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void FlushPendingCmds();
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void Destroy();
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void ActorDestroy(ActorDestroyReason why) override;
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FlushedCmdInfo& GetFlushedCmdInfo() { return mFlushedCmdInfo; }
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private:
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friend PWebGLChild;
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virtual ~WebGLChild();
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public:
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mozilla::ipc::IPCResult RecvJsWarning(const std::string&) const;
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mozilla::ipc::IPCResult RecvOnContextLoss(webgl::ContextLossReason) const;
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mozilla::ipc::IPCResult RecvOnSyncComplete(webgl::ObjectId) const;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // WEBGLCHILD_H_
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