mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
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76 lines
1.6 KiB
C++
76 lines
1.6 KiB
C++
/** Memory allocators.
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*
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* @file
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* @author Steffen Vogel <svogel2@eonerc.rwth-aachen.de>
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* @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
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* @license Apache 2.0
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*********************************************************************************/
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#pragma once
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#ifdef IBVERBS_FOUND
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#include <infiniband/verbs.h>
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#endif /* IBVERBS_FOUND */
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#include <cstddef>
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#include <cstdint>
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#include <villas/node/config.hpp>
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#include <villas/node/memory_type.hpp>
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namespace villas {
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namespace node {
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namespace memory {
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/** Descriptor of a memory block. Associated block always starts at
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* &m + sizeof(struct Block). */
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struct Block {
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struct Block *prev;
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struct Block *next;
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size_t length; /**< Length of the block; doesn't include the descriptor itself */
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bool used;
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};
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/** @todo Unused for now */
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struct Allocation {
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struct Type *type;
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struct Allocation *parent;
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void *address;
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size_t alignment;
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size_t length;
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union {
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#ifdef IBVERBS_FOUND
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struct {
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struct ibv_mr *mr;
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} ib;
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#endif
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struct {
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struct Block *block;
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} managed;
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};
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};
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/** Initilialize memory subsystem */
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int init(int hugepages) __attribute__ ((warn_unused_result));
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int lock(size_t lock);
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/** Allocate \p len bytes memory of type \p m.
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*
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* @retval nullptr If allocation failed.
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* @retval <>0 If allocation was successful.
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*/
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void * alloc(size_t len, struct Type *m = default_type);
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void * alloc_aligned(size_t len, size_t alignment, struct Type *m = default_type);
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int free(void *ptr);
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struct Allocation * get_allocation(void *ptr);
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} /* namespace memory */
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} /* namespace node */
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} /* namespace villas */
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