gecko/gfx/layers/ipc/LayerTransactionChild.cpp

115 lines
3.2 KiB
C++

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