Raphael CoefficandRaphael Coeffic
d8410348c3
this frees lots of space for the stack on colorlcd targets
132 lines
3.5 KiB
C++
132 lines
3.5 KiB
C++
/*
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* Copyright (C) OpenTX
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*
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* Based on code named
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* th9x - http://code.google.com/p/th9x
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* er9x - http://code.google.com/p/er9x
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* gruvin9x - http://code.google.com/p/gruvin9x
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*
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* License GPLv2: http://www.gnu.org/licenses/gpl-2.0.html
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*
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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 General Public License version 2 as
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* published by the Free Software Foundation.
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*
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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 General Public License for more details.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include "opentx.h"
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#include "bin_allocator.h"
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BinAllocator_slots1 slots1 __SDRAM;
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BinAllocator_slots2 slots2 __SDRAM;
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#if defined(DEBUG)
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int SimulateMallocFailure = 0; //set this to simulate allocation failure
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#endif
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bool bin_free(void * ptr)
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{
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//return TRUE if ours
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return slots1.free(ptr) || slots2.free(ptr);
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}
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void * bin_malloc(size_t size) {
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//try to allocate from our space
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void * res = slots1.malloc(size);
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return res ? res : slots2.malloc(size);
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}
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void * bin_realloc(void * ptr, size_t size)
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{
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if (ptr == 0) {
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//no previous data, try our malloc
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return bin_malloc(size);
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}
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else {
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if (! (slots1.is_member(ptr) || slots2.is_member(ptr)) ) {
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// not our data, leave it to libc realloc
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return 0;
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}
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//we have existing data
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// if it fits in current slot, return it
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// TODO if new size is smaller, try to relocate in smaller slot
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if ( slots1.can_fit(ptr, size) ) {
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// TRACE("OUR realloc %p[%lu] fits in slot1", ptr, size);
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return ptr;
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}
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if ( slots2.can_fit(ptr, size) ) {
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// TRACE("OUR realloc %p[%lu] fits in slot2", ptr, size);
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return ptr;
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}
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//we need a bigger slot
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void * res = bin_malloc(size);
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if (res == 0) {
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// we don't have the space, use libc malloc
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// TRACE("bin_malloc [%lu] FAILURE", size);
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res = malloc(size);
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if (res == 0) {
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TRACE("libc malloc [%lu] FAILURE", size);
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return 0;
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}
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}
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//copy data
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memcpy(res, ptr, slots1.size(ptr) + slots2.size(ptr));
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bin_free(ptr);
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return res;
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}
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}
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void *bin_l_alloc (void *ud, void *ptr, size_t osize, size_t nsize)
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{
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(void)ud; (void)osize; /* not used */
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if (nsize == 0) {
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if (ptr) { // avoid a bunch of NULL pointer free calls
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if (!bin_free(ptr)) {
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// not our range, use libc allocator
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// TRACE("libc free %p", ptr);
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free(ptr);
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}
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}
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return nullptr;
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}
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else {
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#if defined(DEBUG)
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if (SimulateMallocFailure < 0 ) {
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//delayed failure
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if (++SimulateMallocFailure == 0) {
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SimulateMallocFailure = 1;
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}
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}
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if ( SimulateMallocFailure > 0) {
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// simulate one malloc failure
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TRACE("bin_l_alloc(): simulating malloc failure at %p[%lu]", ptr, nsize);
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return 0;
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}
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#endif // #if defined(DEBUG)
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// try our allocator, if it fails use libc allocator
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void * res = bin_realloc(ptr, nsize);
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if (res && ptr) {
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// TRACE("OUR realloc %p[%lu] -> %p[%lu]", ptr, osize, res, nsize);
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}
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if (res == 0) {
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res = realloc(ptr, nsize);
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// TRACE("libc realloc %p[%lu] -> %p[%lu]", ptr, osize, res, nsize);
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// if (res == 0 ){
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// TRACE("realloc FAILURE %lu", nsize);
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// dumpFreeMemory();
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// }
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}
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return res;
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}
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}
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