mirror of
https://github.com/vale981/arb
synced 2025-03-04 17:01:40 -05:00
98 lines
2.2 KiB
C
98 lines
2.2 KiB
C
/*
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Copyright (C) 2014 Fredrik Johansson
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This file is part of Arb.
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Arb is free software: you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License (LGPL) as published
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by the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version. See <http://www.gnu.org/licenses/>.
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*/
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#include "arf.h"
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#define ARF_USE_CACHE 0
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#define ARF_MAX_CACHE_LIMBS 64
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FLINT_TLS_PREFIX mp_ptr * arf_free_arr = NULL;
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FLINT_TLS_PREFIX ulong arf_free_num = 0;
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FLINT_TLS_PREFIX ulong arf_free_alloc = 0;
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FLINT_TLS_PREFIX int arf_have_registered_cleanup = 0;
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void _arf_cleanup(void)
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{
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slong i;
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for (i = 0; i < arf_free_num; i++)
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flint_free(arf_free_arr[i]);
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flint_free(arf_free_arr);
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arf_free_arr = NULL;
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arf_free_num = 0;
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arf_free_alloc = 0;
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}
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void
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_arf_promote(arf_t x, mp_size_t n)
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{
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if (ARF_USE_CACHE && n <= ARF_MAX_CACHE_LIMBS && arf_free_num != 0)
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{
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mp_ptr ptr;
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mp_size_t alloc;
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ptr = arf_free_arr[--arf_free_num];
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alloc = ptr[0];
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if (alloc >= n)
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{
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ARF_PTR_ALLOC(x) = ptr[0];
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ARF_PTR_D(x) = ptr;
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}
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else
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{
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ptr = flint_realloc(ptr, n * sizeof(mp_limb_t));
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ARF_PTR_ALLOC(x) = n;
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ARF_PTR_D(x) = ptr;
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}
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}
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else
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{
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ARF_PTR_ALLOC(x) = n;
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ARF_PTR_D(x) = flint_malloc(n * sizeof(mp_limb_t));
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}
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}
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void
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_arf_demote(arf_t x)
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{
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mp_ptr ptr;
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mp_size_t alloc;
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alloc = ARF_PTR_ALLOC(x);
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ptr = ARF_PTR_D(x);
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if (ARF_USE_CACHE && alloc <= ARF_MAX_CACHE_LIMBS)
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{
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if (arf_free_num == arf_free_alloc)
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{
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if (!arf_have_registered_cleanup)
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{
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flint_register_cleanup_function(_arf_cleanup);
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arf_have_registered_cleanup = 1;
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}
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arf_free_alloc = FLINT_MAX(64, arf_free_alloc * 2);
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arf_free_arr = flint_realloc(arf_free_arr,
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arf_free_alloc * sizeof(mp_ptr));
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}
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ptr[0] = alloc;
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arf_free_arr[arf_free_num++] = ptr;
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}
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else
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{
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flint_free(ptr);
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}
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}
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