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/*
* Copyright 2011-2015 Blender Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __UTIL_GUARDED_ALLOCATOR_H__
#define __UTIL_GUARDED_ALLOCATOR_H__
/* Define this in order to use Blender's guarded allocator to keep
* track of allocated buffers, their sizes and peak memory usage.
*
* This is usually a bad level call, but it's really handy to keep
* track of overall peak memory consumption during the scene
* synchronization step.
*/
#undef WITH_BLENDER_GUARDEDALLOC
#include <memory>
#include "util_types.h"
#ifdef WITH_BLENDER_GUARDEDALLOC
# include "../../guardedalloc/MEM_guardedalloc.h"
#endif
CCL_NAMESPACE_BEGIN
/* Internal use only. */
void util_guarded_mem_alloc(size_t n);
void util_guarded_mem_free(size_t n);
/* Guarded allocator for the use with STL. */
template <typename T>
class GuardedAllocator: public std::allocator<T> {
public:
template<typename _Tp1>
struct rebind {
typedef GuardedAllocator<_Tp1> other;
};
T *allocate(size_t n, const void *hint = 0)
{
util_guarded_mem_alloc(n * sizeof(T));
#ifdef WITH_BLENDER_GUARDEDALLOC
return (T*)MEM_mallocN(n * sizeof(T), "Cycles Alloc");
#else
return std::allocator<T>::allocate(n, hint);
#endif
}
void deallocate(T *p, size_t n)
{
util_guarded_mem_free(n * sizeof(T));
#ifdef WITH_BLENDER_GUARDEDALLOC
MEM_freeN((void*)p);
#else
std::allocator<T>::deallocate(p, n);
#endif
}
GuardedAllocator() : std::allocator<T>() { }
GuardedAllocator(const GuardedAllocator &a) : std::allocator<T>(a) { }
template <class U>
GuardedAllocator(const GuardedAllocator<U> &a) : std::allocator<T>(a) { }
~GuardedAllocator() { }
};
/* Get memory usage and peak from the guarded STL allocator. */
size_t util_guarded_get_mem_used(void);
size_t util_guarded_get_mem_peak(void);
CCL_NAMESPACE_END
#endif /* __UTIL_GUARDED_ALLOCATOR_H__ */
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