michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0:  * vim: sw=2 ts=8 et :
michael@0:  */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "LayerTransactionChild.h"
michael@0: #include "mozilla/layers/CompositableClient.h"  // for CompositableChild
michael@0: #include "mozilla/layers/LayersSurfaces.h"  // for PGrallocBufferChild
michael@0: #include "mozilla/layers/PCompositableChild.h"  // for PCompositableChild
michael@0: #include "mozilla/layers/PLayerChild.h"  // for PLayerChild
michael@0: #include "mozilla/mozalloc.h"           // for operator delete, etc
michael@0: #include "nsDebug.h"                    // for NS_RUNTIMEABORT, etc
michael@0: #include "nsTArray.h"                   // for nsTArray
michael@0: #include "mozilla/layers/TextureClient.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace layers {
michael@0: 
michael@0: class PGrallocBufferChild;
michael@0: 
michael@0: void
michael@0: LayerTransactionChild::Destroy()
michael@0: {
michael@0:   NS_ABORT_IF_FALSE(0 == ManagedPLayerChild().Length(),
michael@0:                     "layers should have been cleaned up by now");
michael@0:   PLayerTransactionChild::Send__delete__(this);
michael@0:   // WARNING: |this| has gone to the great heap in the sky
michael@0: }
michael@0: 
michael@0: PGrallocBufferChild*
michael@0: LayerTransactionChild::AllocPGrallocBufferChild(const IntSize&,
michael@0:                                                 const uint32_t&,
michael@0:                                                 const uint32_t&,
michael@0:                                                 MaybeMagicGrallocBufferHandle*)
michael@0: {
michael@0: #ifdef MOZ_HAVE_SURFACEDESCRIPTORGRALLOC
michael@0:   return GrallocBufferActor::Create();
michael@0: #else
michael@0:   NS_RUNTIMEABORT("No gralloc buffers for you");
michael@0:   return nullptr;
michael@0: #endif
michael@0: }
michael@0: 
michael@0: bool
michael@0: LayerTransactionChild::DeallocPGrallocBufferChild(PGrallocBufferChild* actor)
michael@0: {
michael@0: #ifdef MOZ_HAVE_SURFACEDESCRIPTORGRALLOC
michael@0:   delete actor;
michael@0:   return true;
michael@0: #else
michael@0:   NS_RUNTIMEABORT("Um, how did we get here?");
michael@0:   return false;
michael@0: #endif
michael@0: }
michael@0: 
michael@0: PLayerChild*
michael@0: LayerTransactionChild::AllocPLayerChild()
michael@0: {
michael@0:   // we always use the "power-user" ctor
michael@0:   NS_RUNTIMEABORT("not reached");
michael@0:   return nullptr;
michael@0: }
michael@0: 
michael@0: bool
michael@0: LayerTransactionChild::DeallocPLayerChild(PLayerChild* actor)
michael@0: {
michael@0:   delete actor;
michael@0:   return true;
michael@0: }
michael@0: 
michael@0: PCompositableChild*
michael@0: LayerTransactionChild::AllocPCompositableChild(const TextureInfo& aInfo)
michael@0: {
michael@0:   return CompositableClient::CreateIPDLActor();
michael@0: }
michael@0: 
michael@0: bool
michael@0: LayerTransactionChild::DeallocPCompositableChild(PCompositableChild* actor)
michael@0: {
michael@0:   return CompositableClient::DestroyIPDLActor(actor);
michael@0: }
michael@0: 
michael@0: void
michael@0: LayerTransactionChild::ActorDestroy(ActorDestroyReason why)
michael@0: {
michael@0: #ifdef MOZ_B2G
michael@0:   // Due to poor lifetime management of gralloc (and possibly shmems) we will
michael@0:   // crash at some point in the future when we get destroyed due to abnormal
michael@0:   // shutdown. Its better just to crash here. On desktop though, we have a chance
michael@0:   // of recovering.
michael@0:   if (why == AbnormalShutdown) {
michael@0:     NS_RUNTIMEABORT("ActorDestroy by IPC channel failure at LayerTransactionChild");
michael@0:   }
michael@0: #endif
michael@0: }
michael@0: 
michael@0: PTextureChild*
michael@0: LayerTransactionChild::AllocPTextureChild(const SurfaceDescriptor&,
michael@0:                                           const TextureFlags&)
michael@0: {
michael@0:   return TextureClient::CreateIPDLActor();
michael@0: }
michael@0: 
michael@0: bool
michael@0: LayerTransactionChild::DeallocPTextureChild(PTextureChild* actor)
michael@0: {
michael@0:   return TextureClient::DestroyIPDLActor(actor);
michael@0: }
michael@0: 
michael@0: }  // namespace layers
michael@0: }  // namespace mozilla