rig/memory.c

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/* XMRig
* Copyright 2010 Jeff Garzik <jgarzik@pobox.com>
* Copyright 2012-2014 pooler <pooler@litecoinpool.org>
* Copyright 2014 Lucas Jones <https://github.com/lucasjones>
* Copyright 2014-2016 Wolf9466 <https://github.com/OhGodAPet>
* Copyright 2016 Jay D Dee <jayddee246@gmail.com>
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* Copyright 2016-2018 XMRig <support@xmrig.com>
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*
* 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
* (at your option) 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/>.
*/
#include <string.h>
#include "persistent_memory.h"
#include "options.h"
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static size_t offset = 0;
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void * persistent_calloc(size_t num, size_t size) {
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size += size % 16;
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void *mem = &persistent_memory[offset];
offset += (num * size);
memset(mem, 0, num * size);
return mem;
}
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void create_cryptonight_ctx(struct cryptonight_ctx **ctx, int thr_id)
{
const int ratio = (opt_double_hash && opt_algo == ALGO_CRYPTONIGHT) ? 2 : 1;
ctx[0] = persistent_calloc(1, sizeof(struct cryptonight_ctx));
ctx[0]->memory = &persistent_memory[MEMORY * (thr_id * ratio + 1)];
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if (opt_double_hash) {
ctx[1] = persistent_calloc(1, sizeof(struct cryptonight_ctx));
ctx[1]->memory = ctx[0]->memory + (opt_algo == ALGO_CRYPTONIGHT ? MEMORY : MEMORY_LITE);
}
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}