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#ifndef PHP_CPP_ALLOCATOR_H
#define PHP_CPP_ALLOCATOR_H
#include <memory>
#include "php.h"
/**
* Allocation class which allows various C++ standard library functions
* to allocate and free memory using PHP's emalloc/efree facilities.
*/
template <class T>
class PhpAllocator : public std::allocator<T>
{
public:
// Make some typedefs to avoid having to use "typename" everywhere
typedef typename std::allocator<T>::pointer pointer;
typedef typename std::allocator<T>::size_type size_type;
// The rebind member allows callers to get allocators for other types,
// given a specialised allocator
template <class U> struct rebind { typedef PhpAllocator<U> other; };
// Various constructors that do nothing
PhpAllocator() throw() {}
PhpAllocator(const PhpAllocator& other) throw() {}
template <class U> PhpAllocator(const PhpAllocator<U>&) throw() {}
// Allocate some memory from the PHP request pool
pointer allocate(size_type size, typename std::allocator<void>::const_pointer hint = 0) {
return (pointer)safe_emalloc(size, sizeof(T), 0);
}
// Free memory
void deallocate(pointer p, size_type n) {
return efree(p);
}
};
#endif
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