/** Memory allocators. * * @file * @author Steffen Vogel * @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC * @license GNU General Public License (version 3) * * VILLASnode * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . *********************************************************************************/ #pragma once #ifdef IBVERBS_FOUND #include #endif /* IBVERBS_FOUND */ #include #include #include #include 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; }; }; /** Initilialize 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 */