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/****************************************************************************
**
** Copyright (C) 2008-2012 NVIDIA Corporation.
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "foundation/Qt3DSFoundation.h"
#include "foundation/Qt3DSQuat.h"
#include "foundation/Qt3DSThread.h"
#include "foundation/Qt3DSUtilities.h"
#include "foundation/Qt3DS.h"
#include "foundation/Qt3DSFoundation.h"
#include "foundation/Qt3DSLogging.h"
#include "foundation/Qt3DSMutex.h"
#include "foundation/Qt3DSBroadcastingAllocator.h"
#include "EASTL/hash_map.h"
#include <stdio.h>
#ifdef _WIN32
#pragma warning(disable : 4996) // intentionally suppressing this warning message
#endif
namespace qt3ds {
namespace foundation {
using namespace intrinsics;
union TempAllocatorChunk;
class NVAllocatorListenerManager;
class QT3DS_FOUNDATION_API Foundation : public NVFoundation
{
Foundation(NVAllocatorCallback &alloc);
~Foundation();
public:
void addRef() override;
void release() override;
// factory
static Foundation *createInstance(QT3DSU32 version, NVAllocatorCallback &alloc);
NVBroadcastingAllocator &getAllocator() const override { return mAllocator; }
NVAllocatorCallback &getAllocatorCallback() const override;
NVAllocatorCallback &getCheckedAllocator() { return mAllocator; }
private:
class AlignCheckAllocator : public NVBroadcastingAllocator
{
static const QT3DSU32 MaxListenerCount = 5;
public:
AlignCheckAllocator(NVAllocatorCallback &originalAllocator)
: mAllocator(originalAllocator)
, mListenerCount(0)
{
}
void deallocate(void *ptr) override
{
// So here, for performance reasons I don't grab the mutex.
// The listener array is very rarely changing; for most situations
// only at startup. So it is unlikely that using the mutex
// will help a lot but it could have serious perf implications.
QT3DSU32 theCount = mListenerCount;
for (QT3DSU32 idx = 0; idx < theCount; ++idx)
mListeners[idx]->onDeallocation(ptr);
mAllocator.deallocate(ptr);
}
void *allocate(size_t size, const char *typeName, const char *filename, int line,
int flags) override;
void *allocate(size_t size, const char *typeName, const char *filename, int line,
size_t alignment, size_t alignmentOffset) override;
NVAllocatorCallback &getBaseAllocator() const { return mAllocator; }
void registerAllocationListener(NVAllocationListener &inListener) override
{
QT3DS_ASSERT(mListenerCount < MaxListenerCount);
if (mListenerCount < MaxListenerCount) {
mListeners[mListenerCount] = &inListener;
++mListenerCount;
}
}
void deregisterAllocationListener(NVAllocationListener &inListener) override
{
for (QT3DSU32 idx = 0; idx < mListenerCount; ++idx) {
if (mListeners[idx] == &inListener) {
mListeners[idx] = mListeners[mListenerCount - 1];
--mListenerCount;
break;
}
}
}
private:
NVAllocatorCallback &mAllocator;
// I am not sure about using a NVArray here.
// For now, this is fine.
NVAllocationListener *mListeners[MaxListenerCount];
volatile QT3DSU32 mListenerCount;
};
mutable AlignCheckAllocator mAllocator;
QT3DSU32 mRefCount;
Mutex mRefCountMutex;
};
Foundation::Foundation(NVAllocatorCallback &alloc)
: mAllocator(alloc)
, mRefCount(0)
, mRefCountMutex(alloc)
{
}
Foundation::~Foundation() {}
NVAllocatorCallback &Foundation::getAllocatorCallback() const
{
return mAllocator.getBaseAllocator();
}
Foundation *Foundation::createInstance(QT3DSU32 version, NVAllocatorCallback &alloc)
{
if (version != QT3DS_FOUNDATION_VERSION) {
qCCritical(INVALID_PARAMETER, "Wrong version: foundation version is %d, tried to create %d",
QT3DS_FOUNDATION_VERSION, version);
return 0;
}
Foundation *mInstance = NULL;
if (!mInstance) {
// if we don't assign this here, the Foundation object can't create member
// subobjects which require the allocator
mInstance = reinterpret_cast<Foundation *>(
alloc.allocate(sizeof(Foundation), "Foundation", __FILE__, __LINE__));
if (mInstance) {
QT3DS_PLACEMENT_NEW(mInstance, Foundation)(alloc);
QT3DS_ASSERT(mInstance->mRefCount == 0);
return mInstance;
} else {
qCCritical(INTERNAL_ERROR, "Memory allocation for foundation object failed.");
}
} else {
qCCritical(
INVALID_OPERATION,
"Foundation object exists already. Only one instance per process can be created.");
}
return 0;
}
void Foundation::addRef()
{
mRefCountMutex.lock();
++mRefCount;
mRefCountMutex.unlock();
}
void Foundation::release()
{
mRefCountMutex.lock();
if (mRefCount)
--mRefCount;
QT3DSU32 refCount = mRefCount;
mRefCountMutex.unlock();
if (!refCount) {
NVAllocatorCallback &alloc = mAllocator.getBaseAllocator();
this->~Foundation();
alloc.deallocate(this);
}
}
void *Foundation::AlignCheckAllocator::allocate(size_t size, const char *typeName,
const char *filename, int line, int)
{
void *addr = mAllocator.allocate(size, typeName, filename, line);
if (!addr)
qFatal("User allocator returned NULL.");
if (!(reinterpret_cast<size_t>(addr) & 15)) {
// Same comment as before in the allocation system.
// We don't lock the listener array mutex because of an assumption
// where the listener array is rarely changing.
QT3DSU32 theCount = mListenerCount;
for (QT3DSU32 idx = 0; idx < theCount; ++idx)
mListeners[idx]->onAllocation(size, typeName, filename, line, addr);
return addr;
}
qFatal("Allocations for qt3ds::foundation must be 16-byte aligned.");
return 0;
}
void *Foundation::AlignCheckAllocator::allocate(size_t size, const char *typeName,
const char *filename, int line,
size_t /*alignment*/,
size_t /*alignmentOffset*/)
{
return allocate(size, typeName, filename, line, 0);
}
} // namespace foundation
} // namespace qt3ds
qt3ds::NVFoundation *NVCreateFoundation(qt3ds::QT3DSU32 version, qt3ds::NVAllocatorCallback &allocator)
{
return qt3ds::foundation::Foundation::createInstance(version, allocator);
}
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