gfx/layers/ipc/LayerTransactionChild.cpp@97036ab72558 (annotated)
gfx/layers/ipc/LayerTransactionChild.cpp
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- |
| michael@0 | 2 | * vim: sw=2 ts=8 et : |
| michael@0 | 3 | */ |
| michael@0 | 4 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 5 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 6 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 7 | |
| michael@0 | 8 | #include "LayerTransactionChild.h" |
| michael@0 | 9 | #include "mozilla/layers/CompositableClient.h" // for CompositableChild |
| michael@0 | 10 | #include "mozilla/layers/LayersSurfaces.h" // for PGrallocBufferChild |
| michael@0 | 11 | #include "mozilla/layers/PCompositableChild.h" // for PCompositableChild |
| michael@0 | 12 | #include "mozilla/layers/PLayerChild.h" // for PLayerChild |
| michael@0 | 13 | #include "mozilla/mozalloc.h" // for operator delete, etc |
| michael@0 | 14 | #include "nsDebug.h" // for NS_RUNTIMEABORT, etc |
| michael@0 | 15 | #include "nsTArray.h" // for nsTArray |
| michael@0 | 16 | #include "mozilla/layers/TextureClient.h" |
| michael@0 | 17 | |
| michael@0 | 18 | namespace mozilla { |
| michael@0 | 19 | namespace layers { |
| michael@0 | 20 | |
| michael@0 | 21 | class PGrallocBufferChild; |
| michael@0 | 22 | |
| michael@0 | 23 | void |
| michael@0 | 24 | LayerTransactionChild::Destroy() |
| michael@0 | 25 | { |
| michael@0 | 26 | NS_ABORT_IF_FALSE(0 == ManagedPLayerChild().Length(), |
| michael@0 | 27 | "layers should have been cleaned up by now"); |
| michael@0 | 28 | PLayerTransactionChild::Send__delete__(this); |
| michael@0 | 29 | // WARNING: |this| has gone to the great heap in the sky |
| michael@0 | 30 | } |
| michael@0 | 31 | |
| michael@0 | 32 | PGrallocBufferChild* |
| michael@0 | 33 | LayerTransactionChild::AllocPGrallocBufferChild(const IntSize&, |
| michael@0 | 34 | const uint32_t&, |
| michael@0 | 35 | const uint32_t&, |
| michael@0 | 36 | MaybeMagicGrallocBufferHandle*) |
| michael@0 | 37 | { |
| michael@0 | 38 | #ifdef MOZ_HAVE_SURFACEDESCRIPTORGRALLOC |
| michael@0 | 39 | return GrallocBufferActor::Create(); |
| michael@0 | 40 | #else |
| michael@0 | 41 | NS_RUNTIMEABORT("No gralloc buffers for you"); |
| michael@0 | 42 | return nullptr; |
| michael@0 | 43 | #endif |
| michael@0 | 44 | } |
| michael@0 | 45 | |
| michael@0 | 46 | bool |
| michael@0 | 47 | LayerTransactionChild::DeallocPGrallocBufferChild(PGrallocBufferChild* actor) |
| michael@0 | 48 | { |
| michael@0 | 49 | #ifdef MOZ_HAVE_SURFACEDESCRIPTORGRALLOC |
| michael@0 | 50 | delete actor; |
| michael@0 | 51 | return true; |
| michael@0 | 52 | #else |
| michael@0 | 53 | NS_RUNTIMEABORT("Um, how did we get here?"); |
| michael@0 | 54 | return false; |
| michael@0 | 55 | #endif |
| michael@0 | 56 | } |
| michael@0 | 57 | |
| michael@0 | 58 | PLayerChild* |
| michael@0 | 59 | LayerTransactionChild::AllocPLayerChild() |
| michael@0 | 60 | { |
| michael@0 | 61 | // we always use the "power-user" ctor |
| michael@0 | 62 | NS_RUNTIMEABORT("not reached"); |
| michael@0 | 63 | return nullptr; |
| michael@0 | 64 | } |
| michael@0 | 65 | |
| michael@0 | 66 | bool |
| michael@0 | 67 | LayerTransactionChild::DeallocPLayerChild(PLayerChild* actor) |
| michael@0 | 68 | { |
| michael@0 | 69 | delete actor; |
| michael@0 | 70 | return true; |
| michael@0 | 71 | } |
| michael@0 | 72 | |
| michael@0 | 73 | PCompositableChild* |
| michael@0 | 74 | LayerTransactionChild::AllocPCompositableChild(const TextureInfo& aInfo) |
| michael@0 | 75 | { |
| michael@0 | 76 | return CompositableClient::CreateIPDLActor(); |
| michael@0 | 77 | } |
| michael@0 | 78 | |
| michael@0 | 79 | bool |
| michael@0 | 80 | LayerTransactionChild::DeallocPCompositableChild(PCompositableChild* actor) |
| michael@0 | 81 | { |
| michael@0 | 82 | return CompositableClient::DestroyIPDLActor(actor); |
| michael@0 | 83 | } |
| michael@0 | 84 | |
| michael@0 | 85 | void |
| michael@0 | 86 | LayerTransactionChild::ActorDestroy(ActorDestroyReason why) |
| michael@0 | 87 | { |
| michael@0 | 88 | #ifdef MOZ_B2G |
| michael@0 | 89 | // Due to poor lifetime management of gralloc (and possibly shmems) we will |
| michael@0 | 90 | // crash at some point in the future when we get destroyed due to abnormal |
| michael@0 | 91 | // shutdown. Its better just to crash here. On desktop though, we have a chance |
| michael@0 | 92 | // of recovering. |
| michael@0 | 93 | if (why == AbnormalShutdown) { |
| michael@0 | 94 | NS_RUNTIMEABORT("ActorDestroy by IPC channel failure at LayerTransactionChild"); |
| michael@0 | 95 | } |
| michael@0 | 96 | #endif |
| michael@0 | 97 | } |
| michael@0 | 98 | |
| michael@0 | 99 | PTextureChild* |
| michael@0 | 100 | LayerTransactionChild::AllocPTextureChild(const SurfaceDescriptor&, |
| michael@0 | 101 | const TextureFlags&) |
| michael@0 | 102 | { |
| michael@0 | 103 | return TextureClient::CreateIPDLActor(); |
| michael@0 | 104 | } |
| michael@0 | 105 | |
| michael@0 | 106 | bool |
| michael@0 | 107 | LayerTransactionChild::DeallocPTextureChild(PTextureChild* actor) |
| michael@0 | 108 | { |
| michael@0 | 109 | return TextureClient::DestroyIPDLActor(actor); |
| michael@0 | 110 | } |
| michael@0 | 111 | |
| michael@0 | 112 | } // namespace layers |
| michael@0 | 113 | } // namespace mozilla |
