cuda::experimental::stf::block_allocator_interface

Defined in include/cuda/experimental/__stf/allocators/block_allocator.cuh

class block_allocator_interface

Interface for block allocator.

This class provides an interface for a block allocator. It defines methods for allocation, deallocation, initialization, and printing of information.

Subclassed by cuda::experimental::stf::buddy_allocator, cuda::experimental::stf::cached_block_allocator, cuda::experimental::stf::cached_block_allocator_fifo, cuda::experimental::stf::fixed_size_allocator, cuda::experimental::stf::pooled_allocator, cuda::experimental::stf::uncached_block_allocator, cuda::experimental::stf::uncached_graph_allocator, cuda::experimental::stf::uncached_stream_allocator

Public Functions

block_allocator_interface() = default

Default constructor.

virtual ~block_allocator_interface() = default

Virtual destructor.

virtual void *allocate(backend_ctx_untyped&, const data_place &memory_node, ::std::ptrdiff_t &s, event_list &prereqs) = 0

Asynchronous allocation of memory.

This method asynchronously allocates *s bytes on the specified memory node. Upon success, *ptr will contain the address of the allocated buffer. If the allocation fails, *s will contain a negative value.

Parameters

  • ctx – Untyped backend context

  • memory_node – Memory node where the allocation should occur

  • s – Pointer to the size of the allocation

  • prereqs – List of events that should finish before the allocation starts

Returns

void* Pointer to the allocated memory

virtual void deallocate(backend_ctx_untyped&, const data_place &memory_node, event_list &prereqs, void *ptr, size_t sz) = 0

Deallocation of memory.

This method deallocates memory previously allocated by the allocate method.

Parameters

  • ctx – Untyped backend context

  • memory_node – Memory node where the deallocation should occur

  • prereqs – List of events that should finish before the deallocation starts

  • ptr – Pointer to the memory to be deallocated

  • sz – Size of the memory to be deallocated

virtual event_list deinit(backend_ctx_untyped&) = 0

Deinitialization of the allocator.

Returns

List of events indicating that this was deinitialized

virtual ::std::string to_string() const = 0

String representation of the allocator.

This method returns a string representation of the allocator.

Returns

std::string String representation of the allocator

inline virtual void print_info() const

Print information about the allocator.

This method prints information about the allocator to stderr.