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83523c0259
* umm_malloc manual merge with upstream * Fix divide by zero, case when heap is 100% allocated. * Removed extra line. * Fixed block count for debug build. This resolves OOM events for debug build. Correct overstepping array when freeing. * Handle another corner case in example HeapMetric.ino. Comment corrections. * Revert - ESP.getMaxFreeBlockSize() is back to indicating the size of a contiguous block of memory before the umm_malloc overhead is removed. * Stale code cleanup and comment improvements
57 lines
1.8 KiB
C++
57 lines
1.8 KiB
C++
/*
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Esp.cpp - ESP8266-specific APIs
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Copyright (c) 2015 Ivan Grokhotkov. All rights reserved.
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This file is part of the esp8266 core for Arduino environment.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "umm_malloc/umm_malloc.h"
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#include "umm_malloc/umm_malloc_cfg.h"
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#include "coredecls.h"
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#include "Esp.h"
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void EspClass::getHeapStats(uint32_t* hfree, uint16_t* hmax, uint8_t* hfrag)
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{
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// L2 / Euclidian norm of free block sizes.
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// Having getFreeHeap()=sum(hole-size), fragmentation is given by
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// 100 * (1 - sqrt(sum(hole-size²)) / sum(hole-size))
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umm_info(NULL, false);
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uint8_t block_size = umm_block_size();
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if (hfree)
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*hfree = ummHeapInfo.freeBlocks * block_size;
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if (hmax)
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*hmax = (uint16_t)ummHeapInfo.maxFreeContiguousBlocks * block_size;
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if (hfrag) {
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if (ummHeapInfo.freeBlocks) {
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*hfrag = 100 - (sqrt32(ummHeapInfo.freeBlocksSquared) * 100) / ummHeapInfo.freeBlocks;
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} else {
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*hfrag = 0;
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}
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}
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}
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uint8_t EspClass::getHeapFragmentation()
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{
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#ifdef UMM_INLINE_METRICS
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return (uint8_t)umm_fragmentation_metric();
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#else
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uint8_t hfrag;
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getHeapStats(nullptr, nullptr, &hfrag);
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return hfrag;
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#endif
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}
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