tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

WebGLChild.h (1992B)

      1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* This Source Code Form is subject to the terms of the Mozilla Public
      3 * License, v. 2.0. If a copy of the MPL was not distributed with this
      4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      5 
      6 #ifndef WEBGLCHILD_H_
      7 #define WEBGLCHILD_H_
      8 
      9 #include <string>
     10 
     11 #include "mozilla/Maybe.h"
     12 #include "mozilla/WeakPtr.h"
     13 #include "mozilla/dom/PWebGLChild.h"
     14 #include "mozilla/ipc/BigBuffer.h"
     15 
     16 namespace mozilla {
     17 
     18 class ClientWebGLContext;
     19 
     20 namespace dom {
     21 
     22 struct FlushedCmdInfo final {
     23  size_t flushes = 0;
     24  // Store a number of flushes since last IPC congestion check.
     25  // It is reset to 0, when current IPC congestion check is done.
     26  size_t flushesSinceLastCongestionCheck = 0;
     27  // Incremented for each IPC congestion check.
     28  size_t congestionCheckGeneration = 0;
     29  size_t flushedCmdBytes = 0;
     30  size_t overhead = 0;
     31 };
     32 
     33 class WebGLChild final : public PWebGLChild, public SupportsWeakPtr {
     34  const WeakPtr<ClientWebGLContext> mContext;
     35  const size_t mDefaultCmdsShmemSize;
     36  mozilla::ipc::BigBuffer mPendingCmdsShmem;
     37  size_t mPendingCmdsPos = 0;
     38  size_t mPendingCmdsAlignmentOverhead = 0;
     39  FlushedCmdInfo mFlushedCmdInfo;
     40 
     41 public:
     42  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(WebGLChild, override);
     43 
     44  explicit WebGLChild(ClientWebGLContext&);
     45 
     46  Maybe<Range<uint8_t>> AllocPendingCmdBytes(size_t,
     47                                             size_t fyiAlignmentOverhead);
     48  void FlushPendingCmds();
     49  void Destroy();
     50  void ActorDestroy(ActorDestroyReason why) override;
     51 
     52  FlushedCmdInfo& GetFlushedCmdInfo() { return mFlushedCmdInfo; }
     53 
     54 private:
     55  friend PWebGLChild;
     56  virtual ~WebGLChild();
     57 
     58 public:
     59  mozilla::ipc::IPCResult RecvJsWarning(const std::string&) const;
     60  mozilla::ipc::IPCResult RecvOnContextLoss(webgl::ContextLossReason) const;
     61  mozilla::ipc::IPCResult RecvOnSyncComplete(webgl::ObjectId) const;
     62 };
     63 
     64 }  // namespace dom
     65 }  // namespace mozilla
     66 
     67 #endif  // WEBGLCHILD_H_