Projekt_Grafika/dependencies/physx-4.1/include/cudamanager/PxCudaMemoryManager.h

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//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of NVIDIA CORPORATION nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Copyright (c) 2008-2019 NVIDIA Corporation. All rights reserved.
#ifndef PXCUDACONTEXTMANAGER_PXCUDAMEMORYMANAGER_H
#define PXCUDACONTEXTMANAGER_PXCUDAMEMORYMANAGER_H
#include "foundation/PxPreprocessor.h"
#if PX_SUPPORT_GPU_PHYSX
#include "task/PxTaskDefine.h"
// some macros to keep the source code more readable
#define PX_ALLOC_INFO(name, ID) __FILE__, __LINE__, name, physx::PxAllocId::ID
#define PX_ALLOC_INFO_PARAMS_DECL(p0, p1, p2, p3) const char* file = p0, int line = p1, const char* allocName = p2, physx::PxAllocId::Enum allocId = physx::PxAllocId::p3
#define PX_ALLOC_INFO_PARAMS_DEF() const char* file, int line, const char* allocName, physx::PxAllocId::Enum allocId
#define PX_ALLOC_INFO_PARAMS_INPUT() file, line, allocName, allocId
#define PX_ALLOC_INFO_PARAMS_INPUT_INFO(info) info.getFileName(), info.getLine(), info.getAllocName(), info.getAllocId()
#ifndef NULL // don't want to include <string.h>
#define NULL 0
#endif
namespace physx
{
PX_PUSH_PACK_DEFAULT
/** \brief ID of the Feature which owns/allocated memory from the heap
*
* Maximum of 64k IDs allowed.
*/
struct PxAllocId
{
/**
* \brief ID of the Feature which owns/allocated memory from the heap
*/
enum Enum
{
UNASSIGNED, //!< default
APEX, //!< APEX stuff not further classified
PARTICLES, //!< all particle related
GPU_UTIL, //!< e.g. RadixSort (used in SPH and deformable self collision)
CLOTH, //!< all cloth related
NUM_IDS //!< number of IDs, be aware that ApexHeapStats contains PxAllocIdStats[NUM_IDS]
};
};
/// \brief memory type managed by a heap
struct PxCudaBufferMemorySpace
{
/**
* \brief memory type managed by a heap
*/
enum Enum
{
T_GPU,
T_PINNED_HOST,
T_WRITE_COMBINED,
T_HOST,
COUNT
};
};
/// \brief class to track allocation statistics, see PxgMirrored
class PxAllocInfo
{
public:
/**
* \brief AllocInfo default constructor
*/
PxAllocInfo() {}
/**
* \brief AllocInfo constructor that initializes all of the members
*/
PxAllocInfo(const char* file, int line, const char* allocName, PxAllocId::Enum allocId)
: mFileName(file)
, mLine(line)
, mAllocName(allocName)
, mAllocId(allocId)
{}
/// \brief get the allocation file name
inline const char* getFileName() const
{
return mFileName;
}
/// \brief get the allocation line
inline int getLine() const
{
return mLine;
}
/// \brief get the allocation name
inline const char* getAllocName() const
{
return mAllocName;
}
/// \brief get the allocation ID
inline PxAllocId::Enum getAllocId() const
{
return mAllocId;
}
private:
const char* mFileName;
int mLine;
const char* mAllocName;
PxAllocId::Enum mAllocId;
};
/// \brief statistics collected per AllocationId by HeapManager.
struct PxAllocIdStats
{
size_t size; //!< currently allocated memory by this ID
size_t maxSize; //!< max allocated memory by this ID
size_t elements; //!< number of current allocations by this ID
size_t maxElements; //!< max number of allocations by this ID
};
class PxCudaMemoryManager;
typedef size_t PxCudaBufferPtr;
/// \brief Hint flag to tell how the buffer will be used
struct PxCudaBufferFlags
{
/// \brief Enumerations for the hint flag to tell how the buffer will be used
enum Enum
{
F_READ = (1 << 0),
F_WRITE = (1 << 1),
F_READ_WRITE = F_READ | F_WRITE
};
};
/// \brief Memory statistics struct returned by CudaMemMgr::getStats()
struct PxCudaMemoryManagerStats
{
size_t heapSize; //!< Size of all pages allocated for this memory type (allocated + free).
size_t totalAllocated; //!< Size occupied by the current allocations.
size_t maxAllocated; //!< High water mark of allocations since the SDK was created.
PxAllocIdStats allocIdStats[PxAllocId::NUM_IDS]; //!< Stats for each allocation ID, see PxAllocIdStats
};
/// \brief Buffer type: made of hint flags and the memory space (Device Memory, Pinned Host Memory, ...)
struct PxCudaBufferType
{
/// \brief PxCudaBufferType copy constructor
PX_INLINE PxCudaBufferType(const PxCudaBufferType& t)
: memorySpace(t.memorySpace)
, flags(t.flags)
{}
/// \brief PxCudaBufferType constructor to explicitely assign members
PX_INLINE PxCudaBufferType(PxCudaBufferMemorySpace::Enum _memSpace, PxCudaBufferFlags::Enum _flags)
: memorySpace(_memSpace)
, flags(_flags)
{}
PxCudaBufferMemorySpace::Enum memorySpace; //!< specifies which memory space for the buffer
PxCudaBufferFlags::Enum flags; //!< specifies the usage flags for the buffer
};
/// \brief Buffer which keeps informations about allocated piece of memory.
class PxCudaBuffer
{
public:
/// Retrieves the manager over which the buffer was allocated.
virtual PxCudaMemoryManager* getCudaMemoryManager() const = 0;
/// Releases the buffer and the memory it used, returns true if successful.
virtual bool free() = 0;
/// Realloc memory. Use to shrink or resize the allocated chunk of memory of this buffer.
/// Returns true if successful. Fails if the operation would change the address and need a memcopy.
/// In that case the user has to allocate, copy and free the memory with separate steps.
/// Realloc to size 0 always returns false and doesn't change the state.
virtual bool realloc(size_t size, PX_ALLOC_INFO_PARAMS_DECL(NULL, 0, NULL, UNASSIGNED)) = 0;
/// Returns the type of the allocated memory.
virtual const PxCudaBufferType& getType() const = 0;
/// Returns the pointer to the allocated memory.
virtual PxCudaBufferPtr getPtr() const = 0;
/// Returns the size of the allocated memory.
virtual size_t getSize() const = 0;
protected:
/// \brief protected destructor
virtual ~PxCudaBuffer() {}
};
/// \brief Allocator class for different kinds of CUDA related memory.
class PxCudaMemoryManager
{
public:
/// Allocate memory of given type and size. Returns a CudaBuffer if successful. Returns NULL if failed.
virtual PxCudaBuffer* alloc(const PxCudaBufferType& type, size_t size, PX_ALLOC_INFO_PARAMS_DECL(NULL, 0, NULL, UNASSIGNED)) = 0;
/// Basic heap allocator without PxCudaBuffer
virtual PxCudaBufferPtr alloc(PxCudaBufferMemorySpace::Enum memorySpace, size_t size, PX_ALLOC_INFO_PARAMS_DECL(NULL, 0, NULL, UNASSIGNED)) = 0;
/// Basic heap deallocator without PxCudaBuffer
virtual bool free(PxCudaBufferMemorySpace::Enum memorySpace, PxCudaBufferPtr addr) = 0;
/// Basic heap realloc without PxCudaBuffer
virtual bool realloc(PxCudaBufferMemorySpace::Enum memorySpace, PxCudaBufferPtr addr, size_t size, PX_ALLOC_INFO_PARAMS_DECL(NULL, 0, NULL, UNASSIGNED)) = 0;
/// Retrieve stats for the memory of given type. See PxCudaMemoryManagerStats.
virtual void getStats(const PxCudaBufferType& type, PxCudaMemoryManagerStats& outStats) = 0;
/// Ensure that a given amount of free memory is available. Triggers CUDA allocations in size of (2^n * pageSize) if necessary.
/// Returns false if page allocations failed.
virtual bool reserve(const PxCudaBufferType& type, size_t size) = 0;
/// Set the page size. The managed memory grows by blocks 2^n * pageSize. Page allocations trigger CUDA driver allocations,
/// so the page size should be reasonably big. Returns false if input size was invalid, i.e. not power of two.
/// Default is 2 MB.
virtual bool setPageSize(const PxCudaBufferType& type, size_t size) = 0;
/// Set the upper limit until which pages of a given memory type can be allocated.
/// Reducing the max when it is already hit does not shrink the memory until it is deallocated by releasing the buffers which own the memory.
virtual bool setMaxMemorySize(const PxCudaBufferType& type, size_t size) = 0;
/// Returns the base size. The base memory block stays persistently allocated over the SDKs life time.
virtual size_t getBaseSize(const PxCudaBufferType& type) = 0;
/// Returns the currently set page size. The memory grows and shrinks in blocks of size (2^n pageSize)
virtual size_t getPageSize(const PxCudaBufferType& type) = 0;
/// Returns the upper limit until which the manager is allowed to allocate additional pages from the CUDA driver.
virtual size_t getMaxMemorySize(const PxCudaBufferType& type) = 0;
/// Get device mapped pinned host mem ptr. Operation only valid for memory space PxCudaBufferMemorySpace::T_PINNED_HOST.
virtual PxCudaBufferPtr getMappedPinnedPtr(PxCudaBufferPtr hostPtr) = 0;
protected:
/// \brief protected destructor
virtual ~PxCudaMemoryManager() {}
};
PX_POP_PACK
} // end physx namespace
#endif // PX_SUPPORT_GPU_PHYSX
#endif // PXCUDACONTEXTMANAGER_PXCUDAMEMORYMANAGER_H