mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-20 16:55:40 +00:00
326 lines
9.2 KiB
C++
326 lines
9.2 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
* 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/. */
|
|
|
|
#ifndef GFX_LAYERS_ISURFACEDEALLOCATOR
|
|
#define GFX_LAYERS_ISURFACEDEALLOCATOR
|
|
|
|
#include <stddef.h> // for size_t
|
|
#include <stdint.h> // for uint32_t
|
|
#include "gfxTypes.h"
|
|
#include "mozilla/gfx/Point.h" // for IntSize
|
|
#include "mozilla/ipc/SharedMemory.h" // for SharedMemory, etc
|
|
#include "mozilla/RefPtr.h"
|
|
#include "nsIMemoryReporter.h" // for nsIMemoryReporter
|
|
#include "mozilla/Atomics.h" // for Atomic
|
|
#include "mozilla/layers/LayersMessages.h" // for ShmemSection
|
|
#include "LayersTypes.h"
|
|
|
|
/*
|
|
* FIXME [bjacob] *** PURE CRAZYNESS WARNING ***
|
|
* (I think that this doesn't apply anymore.)
|
|
*
|
|
* This #define is actually needed here, because subclasses of ISurfaceAllocator,
|
|
* namely ShadowLayerForwarder, will or will not override AllocGrallocBuffer
|
|
* depending on whether MOZ_HAVE_SURFACEDESCRIPTORGRALLOC is defined.
|
|
*/
|
|
#ifdef MOZ_WIDGET_GONK
|
|
#define MOZ_HAVE_SURFACEDESCRIPTORGRALLOC
|
|
#endif
|
|
|
|
namespace mozilla {
|
|
namespace ipc {
|
|
class Shmem;
|
|
} // namespace ipc
|
|
namespace gfx {
|
|
class DataSourceSurface;
|
|
} // namespace gfx
|
|
|
|
namespace layers {
|
|
|
|
class CompositableForwarder;
|
|
class TextureForwarder;
|
|
|
|
class ShmemAllocator;
|
|
class ShmemSectionAllocator;
|
|
class LegacySurfaceDescriptorAllocator;
|
|
class ClientIPCAllocator;
|
|
class HostIPCAllocator;
|
|
class LayersIPCChannel;
|
|
|
|
enum BufferCapabilities {
|
|
DEFAULT_BUFFER_CAPS = 0,
|
|
/**
|
|
* The allocated buffer must be efficiently mappable as a DataSourceSurface.
|
|
*/
|
|
MAP_AS_IMAGE_SURFACE = 1 << 0,
|
|
/**
|
|
* The allocated buffer will be used for GL rendering only
|
|
*/
|
|
USING_GL_RENDERING_ONLY = 1 << 1
|
|
};
|
|
|
|
class SurfaceDescriptor;
|
|
|
|
|
|
mozilla::ipc::SharedMemory::SharedMemoryType OptimalShmemType();
|
|
|
|
/**
|
|
* An interface used to create and destroy surfaces that are shared with the
|
|
* Compositor process (using shmem, or gralloc, or other platform specific memory)
|
|
*
|
|
* Most of the methods here correspond to methods that are implemented by IPDL
|
|
* actors without a common polymorphic interface.
|
|
* These methods should be only called in the ipdl implementor's thread, unless
|
|
* specified otherwise in the implementing class.
|
|
*/
|
|
class ISurfaceAllocator
|
|
{
|
|
public:
|
|
MOZ_DECLARE_REFCOUNTED_TYPENAME(ISurfaceAllocator)
|
|
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(ISurfaceAllocator)
|
|
|
|
ISurfaceAllocator() {}
|
|
|
|
// down-casting
|
|
|
|
virtual ShmemAllocator* AsShmemAllocator() { return nullptr; }
|
|
|
|
virtual ShmemSectionAllocator* AsShmemSectionAllocator() { return nullptr; }
|
|
|
|
virtual CompositableForwarder* AsCompositableForwarder() { return nullptr; }
|
|
|
|
virtual TextureForwarder* GetTextureForwarder() { return nullptr; }
|
|
|
|
virtual ClientIPCAllocator* AsClientAllocator() { return nullptr; }
|
|
|
|
virtual HostIPCAllocator* AsHostIPCAllocator() { return nullptr; }
|
|
|
|
virtual LegacySurfaceDescriptorAllocator*
|
|
AsLegacySurfaceDescriptorAllocator() { return nullptr; }
|
|
|
|
// ipc info
|
|
|
|
virtual bool IPCOpen() const { return true; }
|
|
|
|
virtual bool IsSameProcess() const = 0;
|
|
|
|
virtual bool UsesImageBridge() const { return false; }
|
|
|
|
protected:
|
|
void Finalize() {}
|
|
|
|
virtual ~ISurfaceAllocator() {}
|
|
};
|
|
|
|
/// Methods that are specific to the client/child side.
|
|
class ClientIPCAllocator : public ISurfaceAllocator
|
|
{
|
|
public:
|
|
ClientIPCAllocator() {}
|
|
|
|
virtual ClientIPCAllocator* AsClientAllocator() override { return this; }
|
|
|
|
virtual base::ProcessId GetParentPid() const = 0;
|
|
|
|
virtual MessageLoop * GetMessageLoop() const = 0;
|
|
|
|
virtual int32_t GetMaxTextureSize() const;
|
|
|
|
virtual void CancelWaitForRecycle(uint64_t aTextureId) = 0;
|
|
};
|
|
|
|
/// Methods that are specific to the host/parent side.
|
|
class HostIPCAllocator : public ISurfaceAllocator
|
|
{
|
|
public:
|
|
HostIPCAllocator() {}
|
|
|
|
virtual HostIPCAllocator* AsHostIPCAllocator() override { return this; }
|
|
|
|
/**
|
|
* Get child side's process Id.
|
|
*/
|
|
virtual base::ProcessId GetChildProcessId() = 0;
|
|
|
|
virtual void NotifyNotUsed(PTextureParent* aTexture, uint64_t aTransactionId) = 0;
|
|
|
|
virtual void SendAsyncMessage(const InfallibleTArray<AsyncParentMessageData>& aMessage) = 0;
|
|
|
|
void SendFenceHandleIfPresent(PTextureParent* aTexture);
|
|
|
|
virtual void SendPendingAsyncMessages();
|
|
|
|
virtual void SetAboutToSendAsyncMessages()
|
|
{
|
|
mAboutToSendAsyncMessages = true;
|
|
}
|
|
|
|
bool IsAboutToSendAsyncMessages()
|
|
{
|
|
return mAboutToSendAsyncMessages;
|
|
}
|
|
|
|
protected:
|
|
std::vector<AsyncParentMessageData> mPendingAsyncMessage;
|
|
bool mAboutToSendAsyncMessages = false;
|
|
};
|
|
|
|
/// An allocator can provide shared memory.
|
|
///
|
|
/// The allocated shmems can be deallocated on either process, as long as they
|
|
/// belong to the same channel.
|
|
class ShmemAllocator
|
|
{
|
|
public:
|
|
virtual bool AllocShmem(size_t aSize,
|
|
mozilla::ipc::SharedMemory::SharedMemoryType aShmType,
|
|
mozilla::ipc::Shmem* aShmem) = 0;
|
|
virtual bool AllocUnsafeShmem(size_t aSize,
|
|
mozilla::ipc::SharedMemory::SharedMemoryType aShmType,
|
|
mozilla::ipc::Shmem* aShmem) = 0;
|
|
virtual void DeallocShmem(mozilla::ipc::Shmem& aShmem) = 0;
|
|
};
|
|
|
|
/// An allocator that can group allocations in bigger chunks of shared memory.
|
|
///
|
|
/// The allocated shmem sections can only be deallocated by the same allocator
|
|
/// instance (and only in the child process).
|
|
class ShmemSectionAllocator
|
|
{
|
|
public:
|
|
virtual bool AllocShmemSection(uint32_t aSize, ShmemSection* aShmemSection) = 0;
|
|
|
|
virtual void DeallocShmemSection(ShmemSection& aShmemSection) = 0;
|
|
|
|
virtual void MemoryPressure() {}
|
|
};
|
|
|
|
/// Some old stuff that's still around and used for screenshots.
|
|
///
|
|
/// New code should not need this (see TextureClient).
|
|
class LegacySurfaceDescriptorAllocator
|
|
{
|
|
public:
|
|
virtual bool AllocSurfaceDescriptor(const gfx::IntSize& aSize,
|
|
gfxContentType aContent,
|
|
SurfaceDescriptor* aBuffer) = 0;
|
|
|
|
virtual bool AllocSurfaceDescriptorWithCaps(const gfx::IntSize& aSize,
|
|
gfxContentType aContent,
|
|
uint32_t aCaps,
|
|
SurfaceDescriptor* aBuffer) = 0;
|
|
|
|
virtual void DestroySurfaceDescriptor(SurfaceDescriptor* aSurface) = 0;
|
|
};
|
|
|
|
already_AddRefed<gfx::DrawTarget>
|
|
GetDrawTargetForDescriptor(const SurfaceDescriptor& aDescriptor, gfx::BackendType aBackend);
|
|
|
|
already_AddRefed<gfx::DataSourceSurface>
|
|
GetSurfaceForDescriptor(const SurfaceDescriptor& aDescriptor);
|
|
|
|
uint8_t*
|
|
GetAddressFromDescriptor(const SurfaceDescriptor& aDescriptor);
|
|
|
|
class GfxMemoryImageReporter final : public nsIMemoryReporter
|
|
{
|
|
~GfxMemoryImageReporter() {}
|
|
|
|
public:
|
|
NS_DECL_ISUPPORTS
|
|
|
|
GfxMemoryImageReporter()
|
|
{
|
|
#ifdef DEBUG
|
|
// There must be only one instance of this class, due to |sAmount|
|
|
// being static.
|
|
static bool hasRun = false;
|
|
MOZ_ASSERT(!hasRun);
|
|
hasRun = true;
|
|
#endif
|
|
}
|
|
|
|
MOZ_DEFINE_MALLOC_SIZE_OF_ON_ALLOC(MallocSizeOfOnAlloc)
|
|
MOZ_DEFINE_MALLOC_SIZE_OF_ON_FREE(MallocSizeOfOnFree)
|
|
|
|
static void DidAlloc(void* aPointer)
|
|
{
|
|
sAmount += MallocSizeOfOnAlloc(aPointer);
|
|
}
|
|
|
|
static void WillFree(void* aPointer)
|
|
{
|
|
sAmount -= MallocSizeOfOnFree(aPointer);
|
|
}
|
|
|
|
NS_IMETHOD CollectReports(nsIHandleReportCallback* aHandleReport,
|
|
nsISupports* aData, bool aAnonymize) override
|
|
{
|
|
MOZ_COLLECT_REPORT(
|
|
"explicit/gfx/heap-textures", KIND_HEAP, UNITS_BYTES, sAmount,
|
|
"Heap memory shared between threads by texture clients and hosts.");
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
private:
|
|
// Typically we use |size_t| in memory reporters, but in the past this
|
|
// variable has sometimes gone negative due to missing DidAlloc() calls.
|
|
// Therefore, we use a signed type so that any such negative values show up
|
|
// as negative in about:memory, rather than as enormous positive numbers.
|
|
static mozilla::Atomic<ptrdiff_t> sAmount;
|
|
};
|
|
|
|
/// A simple shmem section allocator that can only allocate small
|
|
/// fixed size elements (only intended to be used to store tile
|
|
/// copy-on-write locks for now).
|
|
class FixedSizeSmallShmemSectionAllocator final : public ShmemSectionAllocator
|
|
{
|
|
public:
|
|
enum AllocationStatus
|
|
{
|
|
STATUS_ALLOCATED,
|
|
STATUS_FREED
|
|
};
|
|
|
|
struct ShmemSectionHeapHeader
|
|
{
|
|
Atomic<uint32_t> mTotalBlocks;
|
|
Atomic<uint32_t> mAllocatedBlocks;
|
|
};
|
|
|
|
struct ShmemSectionHeapAllocation
|
|
{
|
|
Atomic<uint32_t> mStatus;
|
|
uint32_t mSize;
|
|
};
|
|
|
|
explicit FixedSizeSmallShmemSectionAllocator(LayersIPCChannel* aShmProvider);
|
|
|
|
~FixedSizeSmallShmemSectionAllocator();
|
|
|
|
virtual bool AllocShmemSection(uint32_t aSize, ShmemSection* aShmemSection) override;
|
|
|
|
virtual void DeallocShmemSection(ShmemSection& aShmemSection) override;
|
|
|
|
virtual void MemoryPressure() override { ShrinkShmemSectionHeap(); }
|
|
|
|
// can be called on the compositor process.
|
|
static void FreeShmemSection(ShmemSection& aShmemSection);
|
|
|
|
void ShrinkShmemSectionHeap();
|
|
|
|
bool IPCOpen() const;
|
|
|
|
protected:
|
|
std::vector<mozilla::ipc::Shmem> mUsedShmems;
|
|
LayersIPCChannel* mShmProvider;
|
|
};
|
|
|
|
} // namespace layers
|
|
} // namespace mozilla
|
|
|
|
#endif
|