/* Memory allocators. * * Author: Steffen Vogel * SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University * SPDX-License-Identifier: Apache-2.0 */ #pragma once #include #include #include #include #ifdef IBVERBS_FOUND #include #endif // IBVERBS_FOUND namespace villas { namespace node { namespace memory { /* Descriptor of a memory block. Associated block always starts at * &m + sizeof(struct Block). */ struct Block { struct Block *prev; struct Block *next; size_t length; // Length of the block; doesn't include the descriptor itself bool used; }; // TODO: Unused for now struct Allocation { struct Type *type; struct Allocation *parent; void *address; size_t alignment; size_t length; union { #ifdef IBVERBS_FOUND struct { struct ibv_mr *mr; } ib; #endif struct { struct Block *block; } managed; }; }; // Initialize memory subsystem int init(int hugepages) __attribute__((warn_unused_result)); int lock(size_t lock); /* Allocate \p len bytes memory of type \p m. * * @retval nullptr If allocation failed. * @retval <>0 If allocation was successful. */ void *alloc(size_t len, struct Type *m = default_type); void *alloc_aligned(size_t len, size_t alignment, struct Type *m = default_type); int free(void *ptr); struct Allocation *get_allocation(void *ptr); } // namespace memory } // namespace node } // namespace villas