thrust::mr::new_delete_resource

class new_delete_resource : public thrust::mr::new_delete_resource_base 

A memory resource that uses global operators new and delete to allocate and deallocate memory. Uses alignment-enabled overloads when available, otherwise uses regular overloads and implements alignment requirements by itself.

Public Types

using pointer = void*: Alias for the template parameter.

Public Functions

inline virtual void *do_allocate(std::size_t bytes, std::size_t alignment = THRUST_MR_DEFAULT_ALIGNMENT) override

Allocates memory of size at least bytes and alignment at least alignment.

Parameters

bytes – size, in bytes, that is requested from this allocation
alignment – alignment that is requested from this allocation

Throws

thrust::bad_alloc – when no memory with requested size and alignment can be allocated.

Returns

A pointer to void to the newly allocated memory.

inline virtual void do_deallocate(void *p, std::size_t bytes, std::size_t alignment = THRUST_MR_DEFAULT_ALIGNMENT) override

Deallocates memory pointed to by p.

Parameters

p – pointer to be deallocated
bytes – the size of the allocation. This must be equivalent to the value of bytes that was passed to the allocation function that returned p.
alignment – the size of the allocation. This must be equivalent to the value of alignment that was passed to the allocation function that returned p.

inline pointer allocate(std::size_t bytes, std::size_t alignment = THRUST_MR_DEFAULT_ALIGNMENT)

Allocates memory of size at least bytes and alignment at least alignment.

Parameters

bytes – size, in bytes, that is requested from this allocation
alignment – alignment that is requested from this allocation

Throws

thrust::bad_alloc – when no memory with requested size and alignment can be allocated.

Returns

A pointer to void to the newly allocated memory.

inline void deallocate(pointer p, std::size_t bytes, std::size_t alignment = THRUST_MR_DEFAULT_ALIGNMENT) noexcept

Deallocates memory pointed to by p.

Parameters

p – pointer to be deallocated
bytes – the size of the allocation. This must be equivalent to the value of bytes that was passed to the allocation function that returned p.
alignment – the alignment of the allocation. This must be equivalent to the value of alignment that was passed to the allocation function that returned p.

inline bool is_equal(const memory_resource &other) const noexcept

Compares this resource to the other one. The default implementation uses identity comparison, which is often the right thing to do and doesn’t require RTTI involvement.

Parameters: other – the other resource to compare this resource to
Returns: whether the two resources are equivalent.

inline virtual bool do_is_equal(const memory_resource &other) const noexcept

Compares this resource to the other one. The default implementation uses identity comparison, which is often the right thing to do and doesn’t require RTTI involvement.

Parameters: other – the other resource to compare this resource to
Returns: whether the two resources are equivalent.