peri4
bf9ad65ff0
minAlloc and maxPoTAlloc now can be override from CMake by PIP_CONTAINERS_MIN_ALLOC and PIP_CONTAINERS_MAX_POT_ALLOC variables
64 lines
1.8 KiB
C++
64 lines
1.8 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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#if defined(PIP_CONTAINERS_MIN_ALLOC)
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# define ACTUAL_MIN_ALLOC PIP_CONTAINERS_MIN_ALLOC
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#else
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# define ACTUAL_MIN_ALLOC 64
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#endif
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#if defined(PIP_CONTAINERS_MAX_POT_ALLOC)
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# define ACTUAL_MAX_POT_ALLOC PIP_CONTAINERS_MAX_POT_ALLOC
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#else
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# define ACTUAL_MAX_POT_ALLOC 64_MiB
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#endif
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const size_t minAlloc = ACTUAL_MIN_ALLOC;
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const size_t maxPoTAlloc = ACTUAL_MAX_POT_ALLOC;
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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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