peri4
9ab46e4afc
PIVector and PIDeque now growth to 64 MiB with PoT, then increments size by 64 MiB in case of large containers it significantly save memory
51 lines
1.5 KiB
C++
51 lines
1.5 KiB
C++
/*
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PIP - Platform Independent Primitives
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Base macros for generic containers
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Ivan Pelipenko peri4ko@yandex.ru
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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 Lesser 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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(at your option) any later version.
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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 Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser 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 "picontainers.h"
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#include "piliterals_bytes.h"
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const size_t minAlloc = 64;
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const size_t maxPoTAlloc = 64_MiB;
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size_t _PIContainerConstantsBase::calcMinCountPoT(size_t szof) {
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size_t ret = 0;
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size_t elc = 1;
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while (elc * szof < minAlloc) {
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elc *= 2;
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++ret;
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}
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// printf("calcMinCount sizeof = %d, min_count = %d, pot = %d\n", szof, elc, ret);
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return ret;
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}
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size_t _PIContainerConstantsBase::calcMaxCountForPoT(size_t szof) {
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// printf("calcMaxCountForPoT sizeof = %d, size = %d\n", szof, maxPoTAlloc / szof);
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return maxPoTAlloc / szof;
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}
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size_t _PIContainerConstantsBase::calcStepAfterPoT(size_t szof) {
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// printf("calcStepAfterPoT sizeof = %d, size = %d\n", szof, calcMaxCountForPoT(szof));
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return calcMaxCountForPoT(szof);
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}
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