Add m-esr52 at 52.6.0

1 files changed, 449 insertions, 0 deletions

diff --git a/gfx/layers/ipc/ImageBridgeParent.cpp b/gfx/layers/ipc/ImageBridgeParent.cpp
new file mode 100644
index 000000000..7b116f520
--- /dev/null
+++ b/gfx/layers/ipc/ImageBridgeParent.cpp
@@ -0,0 +1,449 @@
+/* vim: set ts=2 sw=2 et tw=80: */
+/* -*- Mode: C++; tab-width: 20; 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/. */
+
+#include "ImageBridgeParent.h"
+#include <stdint.h>                     // for uint64_t, uint32_t
+#include "CompositableHost.h"           // for CompositableParent, Create
+#include "base/message_loop.h"          // for MessageLoop
+#include "base/process.h"               // for ProcessId
+#include "base/task.h"                  // for CancelableTask, DeleteTask, etc
+#include "mozilla/ClearOnShutdown.h"
+#include "mozilla/gfx/Point.h"                   // for IntSize
+#include "mozilla/Hal.h"                // for hal::SetCurrentThreadPriority()
+#include "mozilla/HalTypes.h"           // for hal::THREAD_PRIORITY_COMPOSITOR
+#include "mozilla/ipc/MessageChannel.h" // for MessageChannel, etc
+#include "mozilla/ipc/ProtocolUtils.h"
+#include "mozilla/ipc/Transport.h"      // for Transport
+#include "mozilla/media/MediaSystemResourceManagerParent.h" // for MediaSystemResourceManagerParent
+#include "mozilla/layers/CompositableTransactionParent.h"
+#include "mozilla/layers/LayerManagerComposite.h"
+#include "mozilla/layers/LayersMessages.h"  // for EditReply
+#include "mozilla/layers/LayersSurfaces.h"  // for PGrallocBufferParent
+#include "mozilla/layers/PCompositableParent.h"
+#include "mozilla/layers/PImageBridgeParent.h"
+#include "mozilla/layers/TextureHostOGL.h"  // for TextureHostOGL
+#include "mozilla/layers/Compositor.h"
+#include "mozilla/Monitor.h"
+#include "mozilla/mozalloc.h"           // for operator new, etc
+#include "mozilla/Unused.h"
+#include "nsDebug.h"                    // for NS_RUNTIMEABORT, etc
+#include "nsISupportsImpl.h"            // for ImageBridgeParent::Release, etc
+#include "nsTArray.h"                   // for nsTArray, nsTArray_Impl
+#include "nsTArrayForwardDeclare.h"     // for InfallibleTArray
+#include "nsXULAppAPI.h"                // for XRE_GetIOMessageLoop
+#include "mozilla/layers/TextureHost.h"
+#include "nsThreadUtils.h"
+
+namespace mozilla {
+namespace layers {
+
+using namespace mozilla::ipc;
+using namespace mozilla::gfx;
+using namespace mozilla::media;
+
+std::map<base::ProcessId, ImageBridgeParent*> ImageBridgeParent::sImageBridges;
+
+StaticAutoPtr<mozilla::Monitor> sImageBridgesLock;
+
+// defined in CompositorBridgeParent.cpp
+CompositorThreadHolder* GetCompositorThreadHolder();
+
+/* static */ void
+ImageBridgeParent::Setup()
+{
+  MOZ_ASSERT(NS_IsMainThread());
+  if (!sImageBridgesLock) {
+    sImageBridgesLock = new Monitor("ImageBridges");
+    mozilla::ClearOnShutdown(&sImageBridgesLock);
+  }
+}
+
+ImageBridgeParent::ImageBridgeParent(MessageLoop* aLoop,
+                                     ProcessId aChildProcessId)
+  : mMessageLoop(aLoop)
+  , mSetChildThreadPriority(false)
+  , mClosed(false)
+{
+  MOZ_ASSERT(NS_IsMainThread());
+
+  // creates the map only if it has not been created already, so it is safe
+  // with several bridges
+  CompositableMap::Create();
+  {
+    MonitorAutoLock lock(*sImageBridgesLock);
+    sImageBridges[aChildProcessId] = this;
+  }
+  SetOtherProcessId(aChildProcessId);
+}
+
+ImageBridgeParent::~ImageBridgeParent()
+{
+  nsTArray<PImageContainerParent*> parents;
+  ManagedPImageContainerParent(parents);
+  for (PImageContainerParent* p : parents) {
+    delete p;
+  }
+}
+
+static StaticRefPtr<ImageBridgeParent> sImageBridgeParentSingleton;
+
+void ReleaseImageBridgeParentSingleton() {
+  sImageBridgeParentSingleton = nullptr;
+}
+
+/* static */ ImageBridgeParent*
+ImageBridgeParent::CreateSameProcess()
+{
+  RefPtr<ImageBridgeParent> parent =
+    new ImageBridgeParent(CompositorThreadHolder::Loop(), base::GetCurrentProcId());
+  parent->mSelfRef = parent;
+
+  sImageBridgeParentSingleton = parent;
+  return parent;
+}
+
+/* static */ bool
+ImageBridgeParent::CreateForGPUProcess(Endpoint<PImageBridgeParent>&& aEndpoint)
+{
+  MOZ_ASSERT(XRE_GetProcessType() == GeckoProcessType_GPU);
+
+  MessageLoop* loop = CompositorThreadHolder::Loop();
+  RefPtr<ImageBridgeParent> parent = new ImageBridgeParent(loop, aEndpoint.OtherPid());
+
+  loop->PostTask(NewRunnableMethod<Endpoint<PImageBridgeParent>&&>(
+    parent, &ImageBridgeParent::Bind, Move(aEndpoint)));
+
+  sImageBridgeParentSingleton = parent;
+  return true;
+}
+
+void
+ImageBridgeParent::ActorDestroy(ActorDestroyReason aWhy)
+{
+  // Can't alloc/dealloc shmems from now on.
+  mClosed = true;
+  {
+    MonitorAutoLock lock(*sImageBridgesLock);
+    sImageBridges.erase(OtherPid());
+  }
+  MessageLoop::current()->PostTask(NewRunnableMethod(this, &ImageBridgeParent::DeferredDestroy));
+
+  // It is very important that this method gets called at shutdown (be it a clean
+  // or an abnormal shutdown), because DeferredDestroy is what clears mSelfRef.
+  // If mSelfRef is not null and ActorDestroy is not called, the ImageBridgeParent
+  // is leaked which causes the CompositorThreadHolder to be leaked and
+  // CompsoitorParent's shutdown ends up spinning the event loop forever, waiting
+  // for the compositor thread to terminate.
+}
+
+bool
+ImageBridgeParent::RecvImageBridgeThreadId(const PlatformThreadId& aThreadId)
+{
+  MOZ_ASSERT(!mSetChildThreadPriority);
+  if (mSetChildThreadPriority) {
+    return false;
+  }
+  mSetChildThreadPriority = true;
+  return true;
+}
+
+class MOZ_STACK_CLASS AutoImageBridgeParentAsyncMessageSender
+{
+public:
+  explicit AutoImageBridgeParentAsyncMessageSender(ImageBridgeParent* aImageBridge,
+                                                   InfallibleTArray<OpDestroy>* aToDestroy = nullptr)
+    : mImageBridge(aImageBridge)
+    , mToDestroy(aToDestroy)
+  {
+    mImageBridge->SetAboutToSendAsyncMessages();
+  }
+
+  ~AutoImageBridgeParentAsyncMessageSender()
+  {
+    mImageBridge->SendPendingAsyncMessages();
+    if (mToDestroy) {
+      for (const auto& op : *mToDestroy) {
+        mImageBridge->DestroyActor(op);
+      }
+    }
+  }
+private:
+  ImageBridgeParent* mImageBridge;
+  InfallibleTArray<OpDestroy>* mToDestroy;
+};
+
+bool
+ImageBridgeParent::RecvUpdate(EditArray&& aEdits, OpDestroyArray&& aToDestroy,
+                              const uint64_t& aFwdTransactionId,
+                              EditReplyArray* aReply)
+{
+  // This ensures that destroy operations are always processed. It is not safe
+  // to early-return from RecvUpdate without doing so.
+  AutoImageBridgeParentAsyncMessageSender autoAsyncMessageSender(this, &aToDestroy);
+  UpdateFwdTransactionId(aFwdTransactionId);
+
+  EditReplyVector replyv;
+  for (EditArray::index_type i = 0; i < aEdits.Length(); ++i) {
+    if (!ReceiveCompositableUpdate(aEdits[i], replyv)) {
+      return false;
+    }
+  }
+
+  aReply->SetCapacity(replyv.size());
+  if (replyv.size() > 0) {
+    aReply->AppendElements(&replyv.front(), replyv.size());
+  }
+
+  if (!IsSameProcess()) {
+    // Ensure that any pending operations involving back and front
+    // buffers have completed, so that neither process stomps on the
+    // other's buffer contents.
+    LayerManagerComposite::PlatformSyncBeforeReplyUpdate();
+  }
+
+  return true;
+}
+
+bool
+ImageBridgeParent::RecvUpdateNoSwap(EditArray&& aEdits, OpDestroyArray&& aToDestroy,
+                                    const uint64_t& aFwdTransactionId)
+{
+  InfallibleTArray<EditReply> noReplies;
+  bool success = RecvUpdate(Move(aEdits), Move(aToDestroy), aFwdTransactionId, &noReplies);
+  MOZ_ASSERT(noReplies.Length() == 0, "RecvUpdateNoSwap requires a sync Update to carry Edits");
+  return success;
+}
+
+/* static */ bool
+ImageBridgeParent::CreateForContent(Endpoint<PImageBridgeParent>&& aEndpoint)
+{
+  MessageLoop* loop = CompositorThreadHolder::Loop();
+
+  RefPtr<ImageBridgeParent> bridge = new ImageBridgeParent(loop, aEndpoint.OtherPid());
+  loop->PostTask(NewRunnableMethod<Endpoint<PImageBridgeParent>&&>(
+    bridge, &ImageBridgeParent::Bind, Move(aEndpoint)));
+
+  return true;
+}
+
+void
+ImageBridgeParent::Bind(Endpoint<PImageBridgeParent>&& aEndpoint)
+{
+  if (!aEndpoint.Bind(this))
+    return;
+  mSelfRef = this;
+}
+
+bool ImageBridgeParent::RecvWillClose()
+{
+  // If there is any texture still alive we have to force it to deallocate the
+  // device data (GL textures, etc.) now because shortly after SenStop() returns
+  // on the child side the widget will be destroyed along with it's associated
+  // GL context.
+  InfallibleTArray<PTextureParent*> textures;
+  ManagedPTextureParent(textures);
+  for (unsigned int i = 0; i < textures.Length(); ++i) {
+    RefPtr<TextureHost> tex = TextureHost::AsTextureHost(textures[i]);
+    tex->DeallocateDeviceData();
+  }
+  return true;
+}
+
+static  uint64_t GenImageContainerID() {
+  static uint64_t sNextImageID = 1;
+
+  ++sNextImageID;
+  return sNextImageID;
+}
+
+PCompositableParent*
+ImageBridgeParent::AllocPCompositableParent(const TextureInfo& aInfo,
+                                            PImageContainerParent* aImageContainer,
+                                            uint64_t* aID)
+{
+  uint64_t id = GenImageContainerID();
+  *aID = id;
+  return CompositableHost::CreateIPDLActor(this, aInfo, id, aImageContainer);
+}
+
+bool ImageBridgeParent::DeallocPCompositableParent(PCompositableParent* aActor)
+{
+  return CompositableHost::DestroyIPDLActor(aActor);
+}
+
+PTextureParent*
+ImageBridgeParent::AllocPTextureParent(const SurfaceDescriptor& aSharedData,
+                                       const LayersBackend& aLayersBackend,
+                                       const TextureFlags& aFlags,
+                                       const uint64_t& aSerial)
+{
+  return TextureHost::CreateIPDLActor(this, aSharedData, aLayersBackend, aFlags, aSerial);
+}
+
+bool
+ImageBridgeParent::DeallocPTextureParent(PTextureParent* actor)
+{
+  return TextureHost::DestroyIPDLActor(actor);
+}
+
+PMediaSystemResourceManagerParent*
+ImageBridgeParent::AllocPMediaSystemResourceManagerParent()
+{
+  return new mozilla::media::MediaSystemResourceManagerParent();
+}
+
+bool
+ImageBridgeParent::DeallocPMediaSystemResourceManagerParent(PMediaSystemResourceManagerParent* aActor)
+{
+  MOZ_ASSERT(aActor);
+  delete static_cast<mozilla::media::MediaSystemResourceManagerParent*>(aActor);
+  return true;
+}
+
+PImageContainerParent*
+ImageBridgeParent::AllocPImageContainerParent()
+{
+  return new ImageContainerParent();
+}
+
+bool
+ImageBridgeParent::DeallocPImageContainerParent(PImageContainerParent* actor)
+{
+  delete actor;
+  return true;
+}
+
+void
+ImageBridgeParent::SendAsyncMessage(const InfallibleTArray<AsyncParentMessageData>& aMessage)
+{
+  mozilla::Unused << SendParentAsyncMessages(aMessage);
+}
+
+class ProcessIdComparator
+{
+public:
+  bool Equals(const ImageCompositeNotification& aA,
+              const ImageCompositeNotification& aB) const
+  {
+    return aA.imageContainerParent()->OtherPid() == aB.imageContainerParent()->OtherPid();
+  }
+  bool LessThan(const ImageCompositeNotification& aA,
+                const ImageCompositeNotification& aB) const
+  {
+    return aA.imageContainerParent()->OtherPid() < aB.imageContainerParent()->OtherPid();
+  }
+};
+
+/* static */ bool
+ImageBridgeParent::NotifyImageComposites(nsTArray<ImageCompositeNotification>& aNotifications)
+{
+  // Group the notifications by destination process ID and then send the
+  // notifications in one message per group.
+  aNotifications.Sort(ProcessIdComparator());
+  uint32_t i = 0;
+  bool ok = true;
+  while (i < aNotifications.Length()) {
+    AutoTArray<ImageCompositeNotification,1> notifications;
+    notifications.AppendElement(aNotifications[i]);
+    uint32_t end = i + 1;
+    MOZ_ASSERT(aNotifications[i].imageContainerParent());
+    ProcessId pid = aNotifications[i].imageContainerParent()->OtherPid();
+    while (end < aNotifications.Length() &&
+           aNotifications[end].imageContainerParent()->OtherPid() == pid) {
+      notifications.AppendElement(aNotifications[end]);
+      ++end;
+    }
+    GetInstance(pid)->SendPendingAsyncMessages();
+    if (!GetInstance(pid)->SendDidComposite(notifications)) {
+      ok = false;
+    }
+    i = end;
+  }
+  return ok;
+}
+
+void
+ImageBridgeParent::DeferredDestroy()
+{
+  mCompositorThreadHolder = nullptr;
+  mSelfRef = nullptr; // "this" ImageBridge may get deleted here.
+}
+
+RefPtr<ImageBridgeParent>
+ImageBridgeParent::GetInstance(ProcessId aId)
+{
+  MOZ_ASSERT(CompositorThreadHolder::IsInCompositorThread());
+  MonitorAutoLock lock(*sImageBridgesLock);
+  NS_ASSERTION(sImageBridges.count(aId) == 1, "ImageBridgeParent for the process");
+  return sImageBridges[aId];
+}
+
+void
+ImageBridgeParent::OnChannelConnected(int32_t aPid)
+{
+  mCompositorThreadHolder = GetCompositorThreadHolder();
+}
+
+
+bool
+ImageBridgeParent::AllocShmem(size_t aSize,
+                      ipc::SharedMemory::SharedMemoryType aType,
+                      ipc::Shmem* aShmem)
+{
+  if (mClosed) {
+    return false;
+  }
+  return PImageBridgeParent::AllocShmem(aSize, aType, aShmem);
+}
+
+bool
+ImageBridgeParent::AllocUnsafeShmem(size_t aSize,
+                      ipc::SharedMemory::SharedMemoryType aType,
+                      ipc::Shmem* aShmem)
+{
+  if (mClosed) {
+    return false;
+  }
+  return PImageBridgeParent::AllocUnsafeShmem(aSize, aType, aShmem);
+}
+
+void
+ImageBridgeParent::DeallocShmem(ipc::Shmem& aShmem)
+{
+  if (mClosed) {
+    return;
+  }
+  PImageBridgeParent::DeallocShmem(aShmem);
+}
+
+bool ImageBridgeParent::IsSameProcess() const
+{
+  return OtherPid() == base::GetCurrentProcId();
+}
+
+void
+ImageBridgeParent::NotifyNotUsed(PTextureParent* aTexture, uint64_t aTransactionId)
+{
+  RefPtr<TextureHost> texture = TextureHost::AsTextureHost(aTexture);
+  if (!texture) {
+    return;
+  }
+
+  if (!(texture->GetFlags() & TextureFlags::RECYCLE)) {
+    return;
+  }
+
+  uint64_t textureId = TextureHost::GetTextureSerial(aTexture);
+  mPendingAsyncMessage.push_back(
+    OpNotifyNotUsed(textureId, aTransactionId));
+
+  if (!IsAboutToSendAsyncMessages()) {
+    SendPendingAsyncMessages();
+  }
+}
+
+} // namespace layers
+} // namespace mozilla