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95 lines
2.5 KiB
C
95 lines
2.5 KiB
C
/** Memory allocators.
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*
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* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
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* @copyright 2017, Institute for Automation of Complex Power Systems, EONERC
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* @license GNU General Public License (version 3)
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*
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* VILLASnode
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************************/
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#include <stdlib.h>
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#include <unistd.h>
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#include <errno.h>
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#include <strings.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <villas/log.h>
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#include <villas/memory.h>
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#include <villas/utils.h>
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#include <villas/kernel/kernel.h>
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int memory_init(int hugepages)
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{
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#ifdef __linux__
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int ret, pagecnt, pagesz;
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struct rlimit l;
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info("Initialize memory sub-system");
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pagecnt = kernel_get_nr_hugepages();
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if (pagecnt < hugepages) { INDENT
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kernel_set_nr_hugepages(hugepages);
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debug(LOG_MEM | 2, "Reserved %d hugepages (was %d)", hugepages, pagecnt);
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}
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pagesz = kernel_get_hugepage_size();
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if (pagesz < 0)
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return -1;
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ret = getrlimit(RLIMIT_MEMLOCK, &l);
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if (ret)
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return ret;
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if (l.rlim_cur < pagesz * pagecnt) { INDENT
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l.rlim_cur = pagesz * pagecnt;
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l.rlim_max = l.rlim_cur;
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ret = setrlimit(RLIMIT_MEMLOCK, &l);
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if (ret)
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return ret;
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debug(LOG_MEM | 2, "Increased ressource limit of locked memory to %d bytes", pagesz * pagecnt);
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}
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#endif
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return 0;
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}
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void * memory_alloc(struct memory_type *m, size_t len)
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{
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void *ptr = m->alloc(m, len, sizeof(void *));
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debug(LOG_MEM | 5, "Allocated %#zx bytes of %s memory: %p", len, m->name, ptr);
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return ptr;
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}
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void * memory_alloc_aligned(struct memory_type *m, size_t len, size_t alignment)
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{
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void *ptr = m->alloc(m, len, alignment);
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debug(LOG_MEM | 5, "Allocated %#zx bytes of %#zx-byte-aligned %s memory: %p", len, alignment, m->name, ptr);
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return ptr;
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}
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int memory_free(struct memory_type *m, void *ptr, size_t len)
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{
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debug(LOG_MEM | 5, "Releasing %#zx bytes of %s memory", len, m->name);
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return m->free(m, ptr, len);
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}
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