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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 "SharedSurfacesParent.h"
#include "mozilla/DebugOnly.h"
#include "mozilla/gfx/Logging.h"
#include "mozilla/gfx/gfxVars.h"
#include "mozilla/gfx/GPUProcessManager.h"
#include "mozilla/layers/SharedSurfacesMemoryReport.h"
#include "mozilla/layers/SourceSurfaceSharedData.h"
#include "mozilla/layers/CompositorThread.h"
#include "mozilla/webrender/RenderSharedSurfaceTextureHost.h"
#include "mozilla/webrender/RenderSharedSurfaceTextureHostSWGL.h"
#include "mozilla/webrender/RenderThread.h"
namespace mozilla {
namespace layers {
using namespace mozilla::gfx;
StaticMutex SharedSurfacesParent::sMutex;
StaticAutoPtr<SharedSurfacesParent> SharedSurfacesParent::sInstance;
SharedSurfacesParent::SharedSurfacesParent() = default;
SharedSurfacesParent::~SharedSurfacesParent() {
for (auto i = mSurfaces.Iter(); !i.Done(); i.Next()) {
// There may be lingering consumers of the surfaces that didn't get shutdown
// yet but since we are here, we know the render thread is finished and we
// can unregister everything.
wr::RenderThread::Get()->UnregisterExternalImageDuringShutdown(i.Key());
}
}
/* static */
void SharedSurfacesParent::Initialize() {
MOZ_ASSERT(NS_IsMainThread());
StaticMutexAutoLock lock(sMutex);
if (!sInstance) {
sInstance = new SharedSurfacesParent();
}
}
/* static */
void SharedSurfacesParent::Shutdown() {
// The main thread should blocked on waiting for the render thread to
// complete so this should be safe to release off the main thread.
MOZ_ASSERT(wr::RenderThread::IsInRenderThread());
StaticMutexAutoLock lock(sMutex);
sInstance = nullptr;
}
/* static */
already_AddRefed<DataSourceSurface> SharedSurfacesParent::Get(
const wr::ExternalImageId& aId) {
StaticMutexAutoLock lock(sMutex);
if (!sInstance) {
gfxCriticalNote << "SSP:Get " << wr::AsUint64(aId) << " shtd";
return nullptr;
}
RefPtr<SourceSurfaceSharedDataWrapper> surface;
sInstance->mSurfaces.Get(wr::AsUint64(aId), getter_AddRefs(surface));
return surface.forget();
}
/* static */
already_AddRefed<DataSourceSurface> SharedSurfacesParent::Acquire(
const wr::ExternalImageId& aId) {
StaticMutexAutoLock lock(sMutex);
if (!sInstance) {
gfxCriticalNote << "SSP:Acq " << wr::AsUint64(aId) << " shtd";
return nullptr;
}
RefPtr<SourceSurfaceSharedDataWrapper> surface;
sInstance->mSurfaces.Get(wr::AsUint64(aId), getter_AddRefs(surface));
if (surface) {
DebugOnly<bool> rv = surface->AddConsumer();
MOZ_ASSERT(!rv);
}
return surface.forget();
}
/* static */
bool SharedSurfacesParent::Release(const wr::ExternalImageId& aId,
bool aForCreator) {
StaticMutexAutoLock lock(sMutex);
if (!sInstance) {
return false;
}
uint64_t id = wr::AsUint64(aId);
RefPtr<SourceSurfaceSharedDataWrapper> surface;
sInstance->mSurfaces.Get(wr::AsUint64(aId), getter_AddRefs(surface));
if (!surface) {
return false;
}
if (surface->RemoveConsumer(aForCreator)) {
wr::RenderThread::Get()->UnregisterExternalImage(id);
sInstance->mSurfaces.Remove(id);
}
return true;
}
/* static */
void SharedSurfacesParent::AddSameProcess(const wr::ExternalImageId& aId,
SourceSurfaceSharedData* aSurface) {
MOZ_ASSERT(XRE_IsParentProcess());
MOZ_ASSERT(NS_IsMainThread());
StaticMutexAutoLock lock(sMutex);
if (!sInstance) {
gfxCriticalNote << "SSP:Ads " << wr::AsUint64(aId) << " shtd";
return;
}
// If the child bridge detects it is in the combined UI/GPU process, then it
// will insert a wrapper surface holding the shared memory buffer directly.
// This is good because we avoid mapping the same shared memory twice, but
// still allow the original surface to be freed and remove the wrapper from
// the table when it is no longer needed.
RefPtr<SourceSurfaceSharedDataWrapper> surface =
new SourceSurfaceSharedDataWrapper();
surface->Init(aSurface);
uint64_t id = wr::AsUint64(aId);
MOZ_ASSERT(!sInstance->mSurfaces.Contains(id));
RefPtr<wr::RenderTextureHost> texture;
if (gfx::gfxVars::UseSoftwareWebRender()) {
texture = new wr::RenderSharedSurfaceTextureHostSWGL(surface);
} else {
texture = new wr::RenderSharedSurfaceTextureHost(surface);
}
wr::RenderThread::Get()->RegisterExternalImage(id, texture.forget());
surface->AddConsumer();
sInstance->mSurfaces.Put(id, std::move(surface));
}
/* static */
void SharedSurfacesParent::DestroyProcess(base::ProcessId aPid) {
StaticMutexAutoLock lock(sMutex);
if (!sInstance) {
return;
}
// Note that the destruction of a parent may not be cheap if it still has a
// lot of surfaces still bound that require unmapping.
for (auto i = sInstance->mSurfaces.Iter(); !i.Done(); i.Next()) {
SourceSurfaceSharedDataWrapper* surface = i.Data();
if (surface->GetCreatorPid() == aPid && surface->HasCreatorRef() &&
surface->RemoveConsumer(/* aForCreator */ true)) {
wr::RenderThread::Get()->UnregisterExternalImage(i.Key());
i.Remove();
}
}
}
/* static */
void SharedSurfacesParent::Add(const wr::ExternalImageId& aId,
const SurfaceDescriptorShared& aDesc,
base::ProcessId aPid) {
MOZ_ASSERT(CompositorThreadHolder::IsInCompositorThread());
MOZ_ASSERT(aPid != base::GetCurrentProcId());
StaticMutexAutoLock lock(sMutex);
if (!sInstance) {
gfxCriticalNote << "SSP:Add " << wr::AsUint64(aId) << " shtd";
return;
}
// Note that the surface wrapper maps in the given handle as read only.
RefPtr<SourceSurfaceSharedDataWrapper> surface =
new SourceSurfaceSharedDataWrapper();
if (NS_WARN_IF(!surface->Init(aDesc.size(), aDesc.stride(), aDesc.format(),
aDesc.handle(), aPid))) {
gfxCriticalNote << "SSP:Add " << wr::AsUint64(aId) << " init";
return;
}
uint64_t id = wr::AsUint64(aId);
MOZ_ASSERT(!sInstance->mSurfaces.Contains(id));
RefPtr<wr::RenderTextureHost> texture;
if (gfx::gfxVars::UseSoftwareWebRender()) {
texture = new wr::RenderSharedSurfaceTextureHostSWGL(surface);
} else {
texture = new wr::RenderSharedSurfaceTextureHost(surface);
}
wr::RenderThread::Get()->RegisterExternalImage(id, texture.forget());
surface->AddConsumer();
sInstance->mSurfaces.Put(id, std::move(surface));
}
/* static */
void SharedSurfacesParent::Remove(const wr::ExternalImageId& aId) {
DebugOnly<bool> rv = Release(aId, /* aForCreator */ true);
MOZ_ASSERT(rv);
}
/* static */
void SharedSurfacesParent::AccumulateMemoryReport(
base::ProcessId aPid, SharedSurfacesMemoryReport& aReport) {
StaticMutexAutoLock lock(sMutex);
if (!sInstance) {
return;
}
for (auto i = sInstance->mSurfaces.ConstIter(); !i.Done(); i.Next()) {
SourceSurfaceSharedDataWrapper* surface = i.Data();
if (surface->GetCreatorPid() == aPid) {
aReport.mSurfaces.insert(std::make_pair(
i.Key(), SharedSurfacesMemoryReport::SurfaceEntry{
aPid, surface->GetSize(), surface->Stride(),
surface->GetConsumers(), surface->HasCreatorRef()}));
}
}
}
/* static */
bool SharedSurfacesParent::AccumulateMemoryReport(
SharedSurfacesMemoryReport& aReport) {
if (XRE_IsParentProcess()) {
GPUProcessManager* gpm = GPUProcessManager::Get();
if (!gpm || gpm->GPUProcessPid() != -1) {
return false;
}
} else if (!XRE_IsGPUProcess()) {
return false;
}
StaticMutexAutoLock lock(sMutex);
if (!sInstance) {
return true;
}
for (auto i = sInstance->mSurfaces.ConstIter(); !i.Done(); i.Next()) {
SourceSurfaceSharedDataWrapper* surface = i.Data();
aReport.mSurfaces.insert(std::make_pair(
i.Key(),
SharedSurfacesMemoryReport::SurfaceEntry{
surface->GetCreatorPid(), surface->GetSize(), surface->Stride(),
surface->GetConsumers(), surface->HasCreatorRef()}));
}
return true;
}
} // namespace layers
} // namespace mozilla
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