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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set sw=2 ts=8 et 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 "mozilla/layers/SharedBufferManagerParent.h"
#include "base/message_loop.h" // for MessageLoop
#include "base/process.h" // for ProcessHandle
#include "base/process_util.h" // for OpenProcessHandle
#include "base/task.h" // for CancelableTask, DeleteTask, etc
#include "base/tracked.h" // for FROM_HERE
#include "base/thread.h"
#include "mozilla/ipc/MessageChannel.h" // for MessageChannel, etc
#include "mozilla/ipc/ProtocolUtils.h"
#include "mozilla/ipc/Transport.h" // for Transport
#include "nsIMemoryReporter.h"
#ifdef MOZ_WIDGET_GONK
#include "ui/PixelFormat.h"
#endif
#include "nsThreadUtils.h"
using namespace mozilla::ipc;
#ifdef MOZ_WIDGET_GONK
using namespace android;
#endif
using std::map;
namespace mozilla {
namespace layers {
class GrallocReporter MOZ_FINAL : public nsIMemoryReporter
{
public:
NS_DECL_ISUPPORTS
GrallocReporter()
{
#ifdef DEBUG
// There must be only one instance of this class, due to |sAmount|
// being static. Assert this.
static bool hasRun = false;
MOZ_ASSERT(!hasRun);
hasRun = true;
#endif
}
NS_IMETHOD CollectReports(nsIHandleReportCallback* aHandleReport,
nsISupports* aData)
{
return MOZ_COLLECT_REPORT(
"gralloc", KIND_OTHER, UNITS_BYTES, sAmount,
"Special RAM that can be shared between processes and directly accessed by "
"both the CPU and GPU. Gralloc memory is usually a relatively precious "
"resource, with much less available than generic RAM. When it's exhausted, "
"graphics performance can suffer. This value can be incorrect because of race "
"conditions.");
}
static int64_t sAmount;
};
NS_IMPL_ISUPPORTS(GrallocReporter, nsIMemoryReporter)
int64_t GrallocReporter::sAmount = 0;
void InitGralloc() {
NS_ASSERTION(NS_IsMainThread(), "Should be on main thread.");
RegisterStrongMemoryReporter(new GrallocReporter());
}
map<base::ProcessId, SharedBufferManagerParent* > SharedBufferManagerParent::sManagers;
StaticAutoPtr<Monitor> SharedBufferManagerParent::sManagerMonitor;
uint64_t SharedBufferManagerParent::sBufferKey = 0;
/**
* Task that deletes SharedBufferManagerParent on a specified thread.
*/
class DeleteSharedBufferManagerParentTask : public Task
{
public:
DeleteSharedBufferManagerParentTask(SharedBufferManagerParent* aSharedBufferManager)
: mSharedBufferManager(aSharedBufferManager) {
}
virtual void Run() MOZ_OVERRIDE {}
private:
nsAutoPtr<SharedBufferManagerParent> mSharedBufferManager;
};
SharedBufferManagerParent::SharedBufferManagerParent(Transport* aTransport, base::ProcessId aOwner, base::Thread* aThread)
: mTransport(aTransport)
, mThread(aThread)
, mMainMessageLoop(MessageLoop::current())
, mDestroyed(false)
, mLock("SharedBufferManagerParent.mLock")
{
MOZ_ASSERT(NS_IsMainThread());
if (!sManagerMonitor) {
sManagerMonitor = new Monitor("Manager Monitor");
}
MonitorAutoLock lock(*sManagerMonitor.get());
NS_ASSERTION(NS_IsMainThread(), "Should be on main thread");
if (!aThread->IsRunning()) {
aThread->Start();
}
if (sManagers.count(aOwner) != 0) {
printf_stderr("SharedBufferManagerParent already exists.");
}
mOwner = aOwner;
sManagers[aOwner] = this;
}
SharedBufferManagerParent::~SharedBufferManagerParent()
{
MonitorAutoLock lock(*sManagerMonitor.get());
if (mTransport) {
XRE_GetIOMessageLoop()->PostTask(FROM_HERE,
new DeleteTask<Transport>(mTransport));
}
sManagers.erase(mOwner);
delete mThread;
}
void
SharedBufferManagerParent::ActorDestroy(ActorDestroyReason aWhy)
{
MutexAutoLock lock(mLock);
mDestroyed = true;
#ifdef MOZ_HAVE_SURFACEDESCRIPTORGRALLOC
mBuffers.clear();
#endif
DeleteSharedBufferManagerParentTask* task = new DeleteSharedBufferManagerParentTask(this);
mMainMessageLoop->PostTask(FROM_HERE, task);
}
static void
ConnectSharedBufferManagerInParentProcess(SharedBufferManagerParent* aManager,
Transport* aTransport,
base::ProcessHandle aOtherProcess)
{
aManager->Open(aTransport, aOtherProcess, XRE_GetIOMessageLoop(), ipc::ParentSide);
}
PSharedBufferManagerParent* SharedBufferManagerParent::Create(Transport* aTransport, ProcessId aOtherProcess)
{
ProcessHandle processHandle;
if (!base::OpenProcessHandle(aOtherProcess, &processHandle)) {
return nullptr;
}
base::Thread* thread = nullptr;
char thrname[128];
base::snprintf(thrname, 128, "BufMgrParent#%d", aOtherProcess);
thread = new base::Thread(thrname);
SharedBufferManagerParent* manager = new SharedBufferManagerParent(aTransport, aOtherProcess, thread);
if (!thread->IsRunning()) {
thread->Start();
}
thread->message_loop()->PostTask(FROM_HERE,
NewRunnableFunction(ConnectSharedBufferManagerInParentProcess,
manager, aTransport, processHandle));
return manager;
}
bool SharedBufferManagerParent::RecvAllocateGrallocBuffer(const IntSize& aSize, const uint32_t& aFormat, const uint32_t& aUsage, mozilla::layers::MaybeMagicGrallocBufferHandle* aHandle)
{
#ifdef MOZ_HAVE_SURFACEDESCRIPTORGRALLOC
*aHandle = null_t();
if (aFormat == 0 || aUsage == 0) {
printf_stderr("SharedBufferManagerParent::RecvAllocateGrallocBuffer -- format and usage must be non-zero");
return false;
}
if (aSize.width <= 0 || aSize.height <= 0) {
printf_stderr("SharedBufferManagerParent::RecvAllocateGrallocBuffer -- requested gralloc buffer size is invalid");
return false;
}
// If the requested size is too big (i.e. exceeds the commonly used max GL texture size)
// then we risk OOMing the parent process. It's better to just deny the allocation and
// kill the child process, which is what the following code does.
// TODO: actually use GL_MAX_TEXTURE_SIZE instead of hardcoding 4096
if (aSize.width > 4096 || aSize.height > 4096) {
printf_stderr("SharedBufferManagerParent::RecvAllocateGrallocBuffer -- requested gralloc buffer is too big.");
return false;
}
sp<GraphicBuffer> outgoingBuffer = new GraphicBuffer(aSize.width, aSize.height, aFormat, aUsage);
if (!outgoingBuffer.get() || outgoingBuffer->initCheck() != NO_ERROR) {
printf_stderr("SharedBufferManagerParent::RecvAllocateGrallocBuffer -- gralloc buffer allocation failed");
return true;
}
int64_t bufferKey;
{
MonitorAutoLock lock(*sManagerMonitor.get());
bufferKey = ++sBufferKey;
}
GrallocBufferRef ref;
ref.mOwner = mOwner;
ref.mKey = bufferKey;
*aHandle = MagicGrallocBufferHandle(outgoingBuffer, ref);
int bpp = 0;
bpp = android::bytesPerPixel(outgoingBuffer->getPixelFormat());
if (bpp > 0)
GrallocReporter::sAmount += outgoingBuffer->getStride() * outgoingBuffer->getHeight() * bpp;
else // Specical case for BSP specific formats(mainly YUV formats, count it as normal YUV buffer)
GrallocReporter::sAmount += outgoingBuffer->getStride() * outgoingBuffer->getHeight() * 3 / 2;
{
MutexAutoLock lock(mLock);
mBuffers[bufferKey] = outgoingBuffer;
}
#endif
return true;
}
bool SharedBufferManagerParent::RecvDropGrallocBuffer(const mozilla::layers::MaybeMagicGrallocBufferHandle& handle)
{
#ifdef MOZ_HAVE_SURFACEDESCRIPTORGRALLOC
NS_ASSERTION(handle.type() == MaybeMagicGrallocBufferHandle::TGrallocBufferRef, "We shouldn't interact with the real buffer!");
int64_t bufferKey = handle.get_GrallocBufferRef().mKey;
sp<GraphicBuffer> buf = GetGraphicBuffer(bufferKey);
MOZ_ASSERT(buf.get());
MutexAutoLock lock(mLock);
NS_ASSERTION(mBuffers.count(bufferKey) == 1, "How can you drop others buffer");
mBuffers.erase(bufferKey);
if(!buf.get()) {
printf_stderr("SharedBufferManagerParent::RecvDropGrallocBuffer -- invalid buffer key.");
return true;
}
int bpp = 0;
bpp = android::bytesPerPixel(buf->getPixelFormat());
if (bpp > 0)
GrallocReporter::sAmount -= buf->getStride() * buf->getHeight() * bpp;
else // Specical case for BSP specific formats(mainly YUV formats, count it as normal YUV buffer)
GrallocReporter::sAmount -= buf->getStride() * buf->getHeight() * 3 / 2;
#endif
return true;
}
/*static*/
void SharedBufferManagerParent::DropGrallocBufferSync(SharedBufferManagerParent* mgr, mozilla::layers::SurfaceDescriptor aDesc)
{
mgr->DropGrallocBufferImpl(aDesc);
}
/*static*/
void SharedBufferManagerParent::DropGrallocBuffer(ProcessId id, mozilla::layers::SurfaceDescriptor aDesc)
{
if (aDesc.type() != SurfaceDescriptor::TNewSurfaceDescriptorGralloc) {
return;
}
MonitorAutoLock lock(*sManagerMonitor.get());
SharedBufferManagerParent* mgr = SharedBufferManagerParent::GetInstance(id);
if (!mgr) {
return;
}
MutexAutoLock mgrlock(mgr->mLock);
if (mgr->mDestroyed) {
return;
}
if (PlatformThread::CurrentId() == mgr->mThread->thread_id()) {
MOZ_CRASH("SharedBufferManagerParent::DropGrallocBuffer should not be called on SharedBufferManagerParent thread");
} else {
mgr->mThread->message_loop()->PostTask(FROM_HERE,
NewRunnableFunction(&DropGrallocBufferSync, mgr, aDesc));
}
return;
}
void SharedBufferManagerParent::DropGrallocBufferImpl(mozilla::layers::SurfaceDescriptor aDesc)
{
MutexAutoLock lock(mLock);
if (mDestroyed) {
return;
}
#ifdef MOZ_HAVE_SURFACEDESCRIPTORGRALLOC
int64_t key = -1;
MaybeMagicGrallocBufferHandle handle;
if (aDesc.type() == SurfaceDescriptor::TNewSurfaceDescriptorGralloc) {
handle = aDesc.get_NewSurfaceDescriptorGralloc().buffer();
} else {
return;
}
if (handle.type() == MaybeMagicGrallocBufferHandle::TGrallocBufferRef) {
key = handle.get_GrallocBufferRef().mKey;
} else if (handle.type() == MaybeMagicGrallocBufferHandle::TMagicGrallocBufferHandle) {
key = handle.get_MagicGrallocBufferHandle().mRef.mKey;
}
NS_ASSERTION(key != -1, "Invalid buffer key");
NS_ASSERTION(mBuffers.count(key) == 1, "How can you drop others buffer");
mBuffers.erase(key);
SendDropGrallocBuffer(handle);
#endif
}
MessageLoop* SharedBufferManagerParent::GetMessageLoop()
{
return mThread->message_loop();
}
SharedBufferManagerParent* SharedBufferManagerParent::GetInstance(ProcessId id)
{
NS_ASSERTION(sManagers.count(id) == 1, "No BufferManager for the process");
return sManagers[id];
}
#ifdef MOZ_HAVE_SURFACEDESCRIPTORGRALLOC
android::sp<android::GraphicBuffer>
SharedBufferManagerParent::GetGraphicBuffer(int64_t key)
{
MutexAutoLock lock(mLock);
if (mBuffers.count(key) == 1) {
return mBuffers[key];
} else {
// The buffer can be dropped, or invalid
printf_stderr("SharedBufferManagerParent::GetGraphicBuffer -- invalid key");
return nullptr;
}
}
android::sp<android::GraphicBuffer>
SharedBufferManagerParent::GetGraphicBuffer(GrallocBufferRef aRef)
{
MonitorAutoLock lock(*sManagerMonitor.get());
return GetInstance(aRef.mOwner)->GetGraphicBuffer(aRef.mKey);
}
#endif
IToplevelProtocol*
SharedBufferManagerParent::CloneToplevel(const InfallibleTArray<ProtocolFdMapping>& aFds,
base::ProcessHandle aPeerProcess,
mozilla::ipc::ProtocolCloneContext* aCtx)
{
for (unsigned int i = 0; i < aFds.Length(); i++) {
if (aFds[i].protocolId() == unsigned(GetProtocolId())) {
Transport* transport = OpenDescriptor(aFds[i].fd(),
Transport::MODE_SERVER);
PSharedBufferManagerParent* bufferManager = Create(transport, base::GetProcId(aPeerProcess));
bufferManager->CloneManagees(this, aCtx);
bufferManager->IToplevelProtocol::SetTransport(transport);
return bufferManager;
}
}
return nullptr;
}
} /* namespace layers */
} /* namespace mozilla */
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