gecko/gfx/layers/ipc/LayerTransactionChild.cpp

142 lines
4.2 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/PCompositableChild.h" // for PCompositableChild
#include "mozilla/layers/PLayerChild.h" // for PLayerChild
#include "mozilla/layers/ShadowLayers.h" // for ShadowLayerForwarder
#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 {
void
LayerTransactionChild::Destroy()
{
if (!IPCOpen()) {
return;
}
// mDestroyed is used to prevent calling Send__delete__() twice.
// When this function is called from CompositorChild::Destroy(),
// under Send__delete__() call, this function is called from
// ShadowLayerForwarder's destructor.
// When it happens, IPCOpen() is still true.
// See bug 1004191.
mDestroyed = true;
MOZ_ASSERT(0 == ManagedPLayerChild().Length(),
"layers should have been cleaned up by now");
for (size_t i = 0; i < ManagedPTextureChild().Length(); ++i) {
TextureClient* texture = TextureClient::AsTextureClient(ManagedPTextureChild()[i]);
if (texture) {
texture->ForceRemove();
}
}
SendShutdown();
}
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)
{
MOZ_ASSERT(!mDestroyed);
return CompositableClient::CreateIPDLActor();
}
bool
LayerTransactionChild::DeallocPCompositableChild(PCompositableChild* actor)
{
return CompositableClient::DestroyIPDLActor(actor);
}
bool
LayerTransactionChild::RecvParentAsyncMessages(InfallibleTArray<AsyncParentMessageData>&& aMessages)
{
for (AsyncParentMessageArray::index_type i = 0; i < aMessages.Length(); ++i) {
const AsyncParentMessageData& message = aMessages[i];
switch (message.type()) {
case AsyncParentMessageData::TOpDeliverFence: {
const OpDeliverFence& op = message.get_OpDeliverFence();
FenceHandle fence = op.fence();
PTextureChild* child = op.textureChild();
RefPtr<TextureClient> texture = TextureClient::AsTextureClient(child);
if (texture) {
texture->SetReleaseFenceHandle(fence);
}
break;
}
case AsyncParentMessageData::TOpReplyRemoveTexture: {
const OpReplyRemoveTexture& op = message.get_OpReplyRemoveTexture();
AsyncTransactionTrackersHolder::TransactionCompleteted(op.holderId(),
op.transactionId());
break;
}
default:
NS_ERROR("unknown AsyncParentMessageData type");
return false;
}
}
return true;
}
void
LayerTransactionChild::ActorDestroy(ActorDestroyReason why)
{
mDestroyed = true;
DestroyAsyncTransactionTrackersHolder();
#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&)
{
MOZ_ASSERT(!mDestroyed);
return TextureClient::CreateIPDLActor();
}
bool
LayerTransactionChild::DeallocPTextureChild(PTextureChild* actor)
{
return TextureClient::DestroyIPDLActor(actor);
}
} // namespace layers
} // namespace mozilla