76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
|
#ifndef JSON_ALLOCATOR_H
|
||
|
|
#define JSON_ALLOCATOR_H
|
||
|
|
|
||
|
|
#include "../JSONOptions.h"
|
||
|
|
#if defined(JSON_MEMORY_CALLBACKS) || defined(JSON_MEMORY_POOL)
|
||
|
|
|
||
|
|
#include <cstddef>
|
||
|
|
|
||
|
|
//need these for the json_nothrow
|
||
|
|
#include "JSONDefs/Visual_C.h"
|
||
|
|
#include "JSONDefs/GNU_C.h"
|
||
|
|
#include "JSONDefs/Unknown_C.h"
|
||
|
|
|
||
|
|
class JSONAllocatorRelayer {
|
||
|
|
public:
|
||
|
|
#ifdef JSON_UNIT_TEST
|
||
|
|
static size_t getAllocationCount(void);
|
||
|
|
#endif
|
||
|
|
static void * alloc(size_t bytes) json_nothrow json_hot;
|
||
|
|
static void dealloc(void * ptr) json_nothrow json_hot;
|
||
|
|
};
|
||
|
|
|
||
|
|
template <class T> class json_allocator;
|
||
|
|
|
||
|
|
// specialize for void:
|
||
|
|
template <> class json_allocator<void> {
|
||
|
|
public:
|
||
|
|
typedef void* pointer;
|
||
|
|
typedef const void* const_pointer;
|
||
|
|
// reference to void members are impossible.
|
||
|
|
typedef void value_type;
|
||
|
|
template <class U> struct rebind { typedef json_allocator<U> other; };
|
||
|
|
};
|
||
|
|
|
||
|
|
template <class T> class json_allocator {
|
||
|
|
public:
|
||
|
|
typedef size_t size_type;
|
||
|
|
typedef ptrdiff_t difference_type;
|
||
|
|
typedef T* pointer;
|
||
|
|
typedef const T* const_pointer;
|
||
|
|
typedef T& reference;
|
||
|
|
typedef const T& const_reference;
|
||
|
|
typedef T value_type;
|
||
|
|
template <class U> struct rebind { typedef json_allocator<U> other; };
|
||
|
|
|
||
|
|
inline json_allocator() json_nothrow {}
|
||
|
|
inline json_allocator(const json_allocator&) json_nothrow {}
|
||
|
|
template <class U> inline json_allocator(const json_allocator<U>&) json_nothrow {}
|
||
|
|
inline ~json_allocator() json_nothrow {}
|
||
|
|
|
||
|
|
inline pointer address(reference x) const { return &x; }
|
||
|
|
inline const_pointer address(const_reference x) const { return &x; }
|
||
|
|
|
||
|
|
inline pointer allocate(size_type n, json_allocator<void>::const_pointer = 0) json_hot {
|
||
|
|
return (pointer)JSONAllocatorRelayer::alloc(n * sizeof(T));
|
||
|
|
}
|
||
|
|
inline void deallocate(pointer p, size_type) json_hot {
|
||
|
|
JSONAllocatorRelayer::dealloc(p);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline size_type max_size() const json_nothrow { return 0xEFFFFFFF; }
|
||
|
|
|
||
|
|
inline void construct(pointer p, const T& val){
|
||
|
|
new(p)T(val);
|
||
|
|
};
|
||
|
|
inline void destroy(pointer p){
|
||
|
|
((T*)p) -> ~T();
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
template <class T1, class T2> inline bool operator==(const json_allocator<T1>&, const json_allocator<T2>&) json_nothrow { return true; }
|
||
|
|
template <class T1, class T2> inline bool operator!=(const json_allocator<T1>&, const json_allocator<T2>&) json_nothrow { return false; }
|
||
|
|
|
||
|
|
#endif
|
||
|
|
#endif
|