Revision control
++ // Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
++
++ /* !\internal
++ \class Qt3DCore::QResourceManager
++ \inmodule Qt3DCore
++ \since 5.5
++
++ \brief The QResourceManager allocates memory for resources that can be referenced by a QHandle.
++
++ Using a QHandleManager for handle management, the QResourceManager's responsibility is
++ to provide memory for resources and to offer ways to interact with the resource through
++ the QHandle.
++
++ Using the QHandle obtained when acquiring a resource, the resource can be retrieved and
++ released when no longer needed.
++
++ Internally, memory can be reorganized for best performance while being transparent to the user.
++
++ The memory allocation scheme and locking policies can be customized by providing template
++ parameters. The defaults are ArrayAllocatingPolicy and NonLockingPolicy respectively.
++ */
++
++ /* !\internal
++ \class Qt3DCore::ArrayAllocatingPolicy
++ \inmodule Qt3DCore
++ \since 5.5
++
++ \brief Allocates memory in a contiguous space trying to minimize fragmentation and cache misses.
++
++ Once the maximum number of entities is reached, no more allocations can be made until some resources are
++ released
++
++ \sa QResourceManager
++ */
++
++ /* !\internal
++ \class Qt3DCore::ObjectLevelLockingPolicy
++ \inmodule Qt3DCore
++ \since 5.5
++
++ \brief Provides locking access to a resource through the use of a QReadWriteLock.
++
++ This policy should be used in a QResourceManager when multiple threads may access the manager for
++ read and write operations at the same time.
++
++ It provides two convenience classes WriteLocker and ReadLocker that behave like QReadLocker and QWriteLocker.
++ */
++
++ #include "qresourcemanager_p.h"
++ #include <QtCore/private/qsimd_p.h>
++ #include <Qt3DCore/private/qt3dcore-config_p.h>
++
++ QT_BEGIN_NAMESPACE
++
++ namespace Qt3DCore {
++
++ void *AlignedAllocator::allocate(uint size)
++ {
++ #if defined(__AVX2__)
++ return _mm_malloc(size, 32);
++ #elif defined(__SSE2__)
++ return _mm_malloc(size, 16);
++ #else
++ return malloc(size);
++ #endif
++ }
++
++ void AlignedAllocator::release(void *p)
++ {
++ #if defined(__SSE2__)
++ _mm_free(p);
++ #else
++ free(p);
++ #endif
++ }
++
++ } // Qt3DCore
++
++ QT_END_NAMESPACE