mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
synced 2025-03-30 00:00:11 +01:00
91 lines
2.3 KiB
C++
91 lines
2.3 KiB
C++
/** Memory allocators.
|
|
*
|
|
* @file
|
|
* @author Steffen Vogel <svogel2@eonerc.rwth-aachen.de>
|
|
* @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 <http://www.gnu.org/licenses/>.
|
|
*********************************************************************************/
|
|
|
|
#pragma once
|
|
|
|
#ifdef IBVERBS_FOUND
|
|
#include <infiniband/verbs.h>
|
|
#endif /* IBVERBS_FOUND */
|
|
|
|
#include <cstddef>
|
|
#include <cstdint>
|
|
|
|
#include <villas/node/config.hpp>
|
|
#include <villas/node/memory_type.hpp>
|
|
|
|
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 */
|