mirror of
https://github.com/mozilla/gecko-dev.git
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142 lines
4.2 KiB
C++
142 lines
4.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: sw=2 ts=8 et :
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*/
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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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#include "LayerTransactionChild.h"
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#include "mozilla/layers/CompositableClient.h" // for CompositableChild
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#include "mozilla/layers/PCompositableChild.h" // for PCompositableChild
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#include "mozilla/layers/PLayerChild.h" // for PLayerChild
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#include "mozilla/layers/ShadowLayers.h" // for ShadowLayerForwarder
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#include "mozilla/mozalloc.h" // for operator delete, etc
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#include "nsDebug.h" // for NS_RUNTIMEABORT, etc
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#include "nsTArray.h" // for nsTArray
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#include "mozilla/layers/TextureClient.h"
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namespace mozilla {
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namespace layers {
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void
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LayerTransactionChild::Destroy()
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{
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if (!IPCOpen()) {
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return;
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}
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// mDestroyed is used to prevent calling Send__delete__() twice.
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// When this function is called from CompositorChild::Destroy(),
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// under Send__delete__() call, this function is called from
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// ShadowLayerForwarder's destructor.
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// When it happens, IPCOpen() is still true.
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// See bug 1004191.
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mDestroyed = true;
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MOZ_ASSERT(0 == ManagedPLayerChild().Length(),
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"layers should have been cleaned up by now");
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for (size_t i = 0; i < ManagedPTextureChild().Length(); ++i) {
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TextureClient* texture = TextureClient::AsTextureClient(ManagedPTextureChild()[i]);
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if (texture) {
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texture->ForceRemove();
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}
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}
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SendShutdown();
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}
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PLayerChild*
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LayerTransactionChild::AllocPLayerChild()
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{
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// we always use the "power-user" ctor
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NS_RUNTIMEABORT("not reached");
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return nullptr;
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}
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bool
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LayerTransactionChild::DeallocPLayerChild(PLayerChild* actor)
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{
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delete actor;
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return true;
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}
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PCompositableChild*
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LayerTransactionChild::AllocPCompositableChild(const TextureInfo& aInfo)
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{
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MOZ_ASSERT(!mDestroyed);
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return CompositableClient::CreateIPDLActor();
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}
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bool
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LayerTransactionChild::DeallocPCompositableChild(PCompositableChild* actor)
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{
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return CompositableClient::DestroyIPDLActor(actor);
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}
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bool
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LayerTransactionChild::RecvParentAsyncMessages(InfallibleTArray<AsyncParentMessageData>&& aMessages)
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{
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for (AsyncParentMessageArray::index_type i = 0; i < aMessages.Length(); ++i) {
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const AsyncParentMessageData& message = aMessages[i];
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switch (message.type()) {
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case AsyncParentMessageData::TOpDeliverFence: {
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const OpDeliverFence& op = message.get_OpDeliverFence();
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FenceHandle fence = op.fence();
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PTextureChild* child = op.textureChild();
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RefPtr<TextureClient> texture = TextureClient::AsTextureClient(child);
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if (texture) {
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texture->SetReleaseFenceHandle(fence);
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}
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break;
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}
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case AsyncParentMessageData::TOpReplyRemoveTexture: {
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const OpReplyRemoveTexture& op = message.get_OpReplyRemoveTexture();
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AsyncTransactionTrackersHolder::TransactionCompleteted(op.holderId(),
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op.transactionId());
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break;
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}
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default:
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NS_ERROR("unknown AsyncParentMessageData type");
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return false;
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}
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}
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return true;
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}
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void
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LayerTransactionChild::ActorDestroy(ActorDestroyReason why)
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{
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mDestroyed = true;
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DestroyAsyncTransactionTrackersHolder();
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#ifdef MOZ_B2G
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// Due to poor lifetime management of gralloc (and possibly shmems) we will
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// crash at some point in the future when we get destroyed due to abnormal
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// shutdown. Its better just to crash here. On desktop though, we have a chance
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// of recovering.
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if (why == AbnormalShutdown) {
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NS_RUNTIMEABORT("ActorDestroy by IPC channel failure at LayerTransactionChild");
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}
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#endif
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}
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PTextureChild*
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LayerTransactionChild::AllocPTextureChild(const SurfaceDescriptor&,
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const TextureFlags&)
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{
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MOZ_ASSERT(!mDestroyed);
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return TextureClient::CreateIPDLActor();
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}
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bool
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LayerTransactionChild::DeallocPTextureChild(PTextureChild* actor)
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{
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return TextureClient::DestroyIPDLActor(actor);
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}
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} // namespace layers
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} // namespace mozilla
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