mirror of
https://github.com/DarkFlippers/unleashed-firmware
synced 2024-11-23 21:13:16 +00:00
e3c7201a20
* Furi: rename and move core * Furi: drop CMSIS_OS header and unused api, partially refactor and cleanup the rest * Furi: CMSIS_OS drop and refactoring. * Furi: refactoring, remove cmsis legacy * Furi: fix incorrect assert on queue deallocation, cleanup timer * Furi: improve delay api, get rid of floats * hal: dropped furi_hal_crc * Furi: move DWT based delay to cortex HAL * Furi: update core documentation Co-authored-by: hedger <hedger@nanode.su>
650 lines
23 KiB
C
650 lines
23 KiB
C
/*
|
|
* FreeRTOS Kernel V10.2.1
|
|
* Copyright (C) 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy of
|
|
* this software and associated documentation files (the "Software"), to deal in
|
|
* the Software without restriction, including without limitation the rights to
|
|
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
|
|
* the Software, and to permit persons to whom the Software is furnished to do so,
|
|
* subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in all
|
|
* copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
|
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
|
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
|
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*
|
|
* http://www.FreeRTOS.org
|
|
* http://aws.amazon.com/freertos
|
|
*
|
|
* 1 tab == 4 spaces!
|
|
*/
|
|
|
|
/*
|
|
* A sample implementation of pvPortMalloc() and vPortFree() that combines
|
|
* (coalescences) adjacent memory blocks as they are freed, and in so doing
|
|
* limits memory fragmentation.
|
|
*
|
|
* See heap_1.c, heap_2.c and heap_3.c for alternative implementations, and the
|
|
* memory management pages of http://www.FreeRTOS.org for more information.
|
|
*/
|
|
|
|
#include "memmgr_heap.h"
|
|
#include "check.h"
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <stm32wbxx.h>
|
|
#include <furi_hal_console.h>
|
|
#include <core/common_defines.h>
|
|
|
|
/* Defining MPU_WRAPPERS_INCLUDED_FROM_API_FILE prevents task.h from redefining
|
|
all the API functions to use the MPU wrappers. That should only be done when
|
|
task.h is included from an application file. */
|
|
#define MPU_WRAPPERS_INCLUDED_FROM_API_FILE
|
|
|
|
#include "FreeRTOS.h"
|
|
#include "task.h"
|
|
|
|
#undef MPU_WRAPPERS_INCLUDED_FROM_API_FILE
|
|
|
|
#if(configSUPPORT_DYNAMIC_ALLOCATION == 0)
|
|
#error This file must not be used if configSUPPORT_DYNAMIC_ALLOCATION is 0
|
|
#endif
|
|
|
|
/* Block sizes must not get too small. */
|
|
#define heapMINIMUM_BLOCK_SIZE ((size_t)(xHeapStructSize << 1))
|
|
|
|
/* Assumes 8bit bytes! */
|
|
#define heapBITS_PER_BYTE ((size_t)8)
|
|
|
|
/* Heap start end symbols provided by linker */
|
|
extern const void __heap_start__;
|
|
extern const void __heap_end__;
|
|
uint8_t* ucHeap = (uint8_t*)&__heap_start__;
|
|
|
|
/* Define the linked list structure. This is used to link free blocks in order
|
|
of their memory address. */
|
|
typedef struct A_BLOCK_LINK {
|
|
struct A_BLOCK_LINK* pxNextFreeBlock; /*<< The next free block in the list. */
|
|
size_t xBlockSize; /*<< The size of the free block. */
|
|
} BlockLink_t;
|
|
|
|
/*-----------------------------------------------------------*/
|
|
|
|
/*
|
|
* Inserts a block of memory that is being freed into the correct position in
|
|
* the list of free memory blocks. The block being freed will be merged with
|
|
* the block in front it and/or the block behind it if the memory blocks are
|
|
* adjacent to each other.
|
|
*/
|
|
static void prvInsertBlockIntoFreeList(BlockLink_t* pxBlockToInsert);
|
|
|
|
/*
|
|
* Called automatically to setup the required heap structures the first time
|
|
* pvPortMalloc() is called.
|
|
*/
|
|
static void prvHeapInit(void);
|
|
|
|
/*-----------------------------------------------------------*/
|
|
|
|
/* The size of the structure placed at the beginning of each allocated memory
|
|
block must by correctly byte aligned. */
|
|
static const size_t xHeapStructSize = (sizeof(BlockLink_t) + ((size_t)(portBYTE_ALIGNMENT - 1))) &
|
|
~((size_t)portBYTE_ALIGNMENT_MASK);
|
|
|
|
/* Create a couple of list links to mark the start and end of the list. */
|
|
static BlockLink_t xStart, *pxEnd = NULL;
|
|
|
|
/* Keeps track of the number of free bytes remaining, but says nothing about
|
|
fragmentation. */
|
|
static size_t xFreeBytesRemaining = 0U;
|
|
static size_t xMinimumEverFreeBytesRemaining = 0U;
|
|
|
|
/* Gets set to the top bit of an size_t type. When this bit in the xBlockSize
|
|
member of an BlockLink_t structure is set then the block belongs to the
|
|
application. When the bit is free the block is still part of the free heap
|
|
space. */
|
|
static size_t xBlockAllocatedBit = 0;
|
|
|
|
/* Furi heap extension */
|
|
#include <m-dict.h>
|
|
|
|
/* Allocation tracking types */
|
|
DICT_DEF2(MemmgrHeapAllocDict, uint32_t, uint32_t)
|
|
DICT_DEF2(
|
|
MemmgrHeapThreadDict,
|
|
uint32_t,
|
|
M_DEFAULT_OPLIST,
|
|
MemmgrHeapAllocDict_t,
|
|
DICT_OPLIST(MemmgrHeapAllocDict))
|
|
|
|
/* Thread allocation tracing storage */
|
|
static MemmgrHeapThreadDict_t memmgr_heap_thread_dict = {0};
|
|
static volatile uint32_t memmgr_heap_thread_trace_depth = 0;
|
|
|
|
/* Initialize tracing storage on start */
|
|
void memmgr_heap_init() {
|
|
MemmgrHeapThreadDict_init(memmgr_heap_thread_dict);
|
|
}
|
|
|
|
void memmgr_heap_enable_thread_trace(FuriThreadId thread_id) {
|
|
vTaskSuspendAll();
|
|
{
|
|
memmgr_heap_thread_trace_depth++;
|
|
furi_check(MemmgrHeapThreadDict_get(memmgr_heap_thread_dict, (uint32_t)thread_id) == NULL);
|
|
MemmgrHeapAllocDict_t alloc_dict;
|
|
MemmgrHeapAllocDict_init(alloc_dict);
|
|
MemmgrHeapThreadDict_set_at(memmgr_heap_thread_dict, (uint32_t)thread_id, alloc_dict);
|
|
MemmgrHeapAllocDict_clear(alloc_dict);
|
|
memmgr_heap_thread_trace_depth--;
|
|
}
|
|
(void)xTaskResumeAll();
|
|
}
|
|
|
|
void memmgr_heap_disable_thread_trace(FuriThreadId thread_id) {
|
|
vTaskSuspendAll();
|
|
{
|
|
memmgr_heap_thread_trace_depth++;
|
|
furi_check(MemmgrHeapThreadDict_get(memmgr_heap_thread_dict, (uint32_t)thread_id) != NULL);
|
|
MemmgrHeapThreadDict_erase(memmgr_heap_thread_dict, (uint32_t)thread_id);
|
|
memmgr_heap_thread_trace_depth--;
|
|
}
|
|
(void)xTaskResumeAll();
|
|
}
|
|
|
|
size_t memmgr_heap_get_thread_memory(FuriThreadId thread_id) {
|
|
size_t leftovers = MEMMGR_HEAP_UNKNOWN;
|
|
vTaskSuspendAll();
|
|
{
|
|
memmgr_heap_thread_trace_depth++;
|
|
MemmgrHeapAllocDict_t* alloc_dict =
|
|
MemmgrHeapThreadDict_get(memmgr_heap_thread_dict, (uint32_t)thread_id);
|
|
if(alloc_dict) {
|
|
leftovers = 0;
|
|
MemmgrHeapAllocDict_it_t alloc_dict_it;
|
|
for(MemmgrHeapAllocDict_it(alloc_dict_it, *alloc_dict);
|
|
!MemmgrHeapAllocDict_end_p(alloc_dict_it);
|
|
MemmgrHeapAllocDict_next(alloc_dict_it)) {
|
|
MemmgrHeapAllocDict_itref_t* data = MemmgrHeapAllocDict_ref(alloc_dict_it);
|
|
if(data->key != 0) {
|
|
uint8_t* puc = (uint8_t*)data->key;
|
|
puc -= xHeapStructSize;
|
|
BlockLink_t* pxLink = (void*)puc;
|
|
|
|
if((pxLink->xBlockSize & xBlockAllocatedBit) != 0 &&
|
|
pxLink->pxNextFreeBlock == NULL) {
|
|
leftovers += data->value;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
memmgr_heap_thread_trace_depth--;
|
|
}
|
|
(void)xTaskResumeAll();
|
|
return leftovers;
|
|
}
|
|
|
|
#undef traceMALLOC
|
|
static inline void traceMALLOC(void* pointer, size_t size) {
|
|
FuriThreadId thread_id = furi_thread_get_current_id();
|
|
if(thread_id && memmgr_heap_thread_trace_depth == 0) {
|
|
memmgr_heap_thread_trace_depth++;
|
|
MemmgrHeapAllocDict_t* alloc_dict =
|
|
MemmgrHeapThreadDict_get(memmgr_heap_thread_dict, (uint32_t)thread_id);
|
|
if(alloc_dict) {
|
|
MemmgrHeapAllocDict_set_at(*alloc_dict, (uint32_t)pointer, (uint32_t)size);
|
|
}
|
|
memmgr_heap_thread_trace_depth--;
|
|
}
|
|
}
|
|
|
|
#undef traceFREE
|
|
static inline void traceFREE(void* pointer, size_t size) {
|
|
UNUSED(size);
|
|
FuriThreadId thread_id = furi_thread_get_current_id();
|
|
if(thread_id && memmgr_heap_thread_trace_depth == 0) {
|
|
memmgr_heap_thread_trace_depth++;
|
|
MemmgrHeapAllocDict_t* alloc_dict =
|
|
MemmgrHeapThreadDict_get(memmgr_heap_thread_dict, (uint32_t)thread_id);
|
|
if(alloc_dict) {
|
|
MemmgrHeapAllocDict_erase(*alloc_dict, (uint32_t)pointer);
|
|
}
|
|
memmgr_heap_thread_trace_depth--;
|
|
}
|
|
}
|
|
|
|
size_t memmgr_heap_get_max_free_block() {
|
|
size_t max_free_size = 0;
|
|
BlockLink_t* pxBlock;
|
|
vTaskSuspendAll();
|
|
|
|
pxBlock = xStart.pxNextFreeBlock;
|
|
while(pxBlock->pxNextFreeBlock != NULL) {
|
|
if(pxBlock->xBlockSize > max_free_size) {
|
|
max_free_size = pxBlock->xBlockSize;
|
|
}
|
|
pxBlock = pxBlock->pxNextFreeBlock;
|
|
}
|
|
|
|
xTaskResumeAll();
|
|
return max_free_size;
|
|
}
|
|
|
|
void memmgr_heap_printf_free_blocks() {
|
|
BlockLink_t* pxBlock;
|
|
//TODO enable when we can do printf with a locked scheduler
|
|
//vTaskSuspendAll();
|
|
|
|
pxBlock = xStart.pxNextFreeBlock;
|
|
while(pxBlock->pxNextFreeBlock != NULL) {
|
|
printf("A %p S %lu\r\n", (void*)pxBlock, (uint32_t)pxBlock->xBlockSize);
|
|
pxBlock = pxBlock->pxNextFreeBlock;
|
|
}
|
|
|
|
//xTaskResumeAll();
|
|
}
|
|
|
|
#ifdef HEAP_PRINT_DEBUG
|
|
char* ultoa(unsigned long num, char* str, int radix) {
|
|
char temp[33]; // at radix 2 the string is at most 32 + 1 null long.
|
|
int temp_loc = 0;
|
|
int digit;
|
|
int str_loc = 0;
|
|
|
|
//construct a backward string of the number.
|
|
do {
|
|
digit = (unsigned long)num % ((unsigned long)radix);
|
|
if(digit < 10)
|
|
temp[temp_loc++] = digit + '0';
|
|
else
|
|
temp[temp_loc++] = digit - 10 + 'A';
|
|
num = ((unsigned long)num) / ((unsigned long)radix);
|
|
} while((unsigned long)num > 0);
|
|
|
|
temp_loc--;
|
|
|
|
//now reverse the string.
|
|
while(temp_loc >= 0) { // while there are still chars
|
|
str[str_loc++] = temp[temp_loc--];
|
|
}
|
|
str[str_loc] = 0; // add null termination.
|
|
|
|
return str;
|
|
}
|
|
|
|
static void print_heap_init() {
|
|
char tmp_str[33];
|
|
size_t heap_start = (size_t)&__heap_start__;
|
|
size_t heap_end = (size_t)&__heap_end__;
|
|
|
|
// {PHStart|heap_start|heap_end}
|
|
FURI_CRITICAL_ENTER();
|
|
furi_hal_console_puts("{PHStart|");
|
|
ultoa(heap_start, tmp_str, 16);
|
|
furi_hal_console_puts(tmp_str);
|
|
furi_hal_console_puts("|");
|
|
ultoa(heap_end, tmp_str, 16);
|
|
furi_hal_console_puts(tmp_str);
|
|
furi_hal_console_puts("}\r\n");
|
|
FURI_CRITICAL_EXIT();
|
|
}
|
|
|
|
static void print_heap_malloc(void* ptr, size_t size) {
|
|
char tmp_str[33];
|
|
const char* name = furi_thread_get_name(furi_thread_get_current_id());
|
|
if(!name) {
|
|
name = "";
|
|
}
|
|
|
|
// {thread name|m|address|size}
|
|
FURI_CRITICAL_ENTER();
|
|
furi_hal_console_puts("{");
|
|
furi_hal_console_puts(name);
|
|
furi_hal_console_puts("|m|0x");
|
|
ultoa((unsigned long)ptr, tmp_str, 16);
|
|
furi_hal_console_puts(tmp_str);
|
|
furi_hal_console_puts("|");
|
|
utoa(size, tmp_str, 10);
|
|
furi_hal_console_puts(tmp_str);
|
|
furi_hal_console_puts("}\r\n");
|
|
FURI_CRITICAL_EXIT();
|
|
}
|
|
|
|
static void print_heap_free(void* ptr) {
|
|
char tmp_str[33];
|
|
const char* name = furi_thread_get_name(furi_thread_get_current_id());
|
|
if(!name) {
|
|
name = "";
|
|
}
|
|
|
|
// {thread name|f|address}
|
|
FURI_CRITICAL_ENTER();
|
|
furi_hal_console_puts("{");
|
|
furi_hal_console_puts(name);
|
|
furi_hal_console_puts("|f|0x");
|
|
ultoa((unsigned long)ptr, tmp_str, 16);
|
|
furi_hal_console_puts(tmp_str);
|
|
furi_hal_console_puts("}\r\n");
|
|
FURI_CRITICAL_EXIT();
|
|
}
|
|
#endif
|
|
/*-----------------------------------------------------------*/
|
|
|
|
void* pvPortMalloc(size_t xWantedSize) {
|
|
BlockLink_t *pxBlock, *pxPreviousBlock, *pxNewBlockLink;
|
|
void* pvReturn = NULL;
|
|
size_t to_wipe = xWantedSize;
|
|
|
|
#ifdef HEAP_PRINT_DEBUG
|
|
BlockLink_t* print_heap_block = NULL;
|
|
#endif
|
|
|
|
/* If this is the first call to malloc then the heap will require
|
|
initialisation to setup the list of free blocks. */
|
|
if(pxEnd == NULL) {
|
|
#ifdef HEAP_PRINT_DEBUG
|
|
print_heap_init();
|
|
#endif
|
|
|
|
vTaskSuspendAll();
|
|
{
|
|
prvHeapInit();
|
|
memmgr_heap_init();
|
|
}
|
|
(void)xTaskResumeAll();
|
|
} else {
|
|
mtCOVERAGE_TEST_MARKER();
|
|
}
|
|
|
|
vTaskSuspendAll();
|
|
{
|
|
/* Check the requested block size is not so large that the top bit is
|
|
set. The top bit of the block size member of the BlockLink_t structure
|
|
is used to determine who owns the block - the application or the
|
|
kernel, so it must be free. */
|
|
if((xWantedSize & xBlockAllocatedBit) == 0) {
|
|
/* The wanted size is increased so it can contain a BlockLink_t
|
|
structure in addition to the requested amount of bytes. */
|
|
if(xWantedSize > 0) {
|
|
xWantedSize += xHeapStructSize;
|
|
|
|
/* Ensure that blocks are always aligned to the required number
|
|
of bytes. */
|
|
if((xWantedSize & portBYTE_ALIGNMENT_MASK) != 0x00) {
|
|
/* Byte alignment required. */
|
|
xWantedSize += (portBYTE_ALIGNMENT - (xWantedSize & portBYTE_ALIGNMENT_MASK));
|
|
configASSERT((xWantedSize & portBYTE_ALIGNMENT_MASK) == 0);
|
|
} else {
|
|
mtCOVERAGE_TEST_MARKER();
|
|
}
|
|
} else {
|
|
mtCOVERAGE_TEST_MARKER();
|
|
}
|
|
|
|
if((xWantedSize > 0) && (xWantedSize <= xFreeBytesRemaining)) {
|
|
/* Traverse the list from the start (lowest address) block until
|
|
one of adequate size is found. */
|
|
pxPreviousBlock = &xStart;
|
|
pxBlock = xStart.pxNextFreeBlock;
|
|
while((pxBlock->xBlockSize < xWantedSize) && (pxBlock->pxNextFreeBlock != NULL)) {
|
|
pxPreviousBlock = pxBlock;
|
|
pxBlock = pxBlock->pxNextFreeBlock;
|
|
}
|
|
|
|
/* If the end marker was reached then a block of adequate size
|
|
was not found. */
|
|
if(pxBlock != pxEnd) {
|
|
/* Return the memory space pointed to - jumping over the
|
|
BlockLink_t structure at its start. */
|
|
pvReturn =
|
|
(void*)(((uint8_t*)pxPreviousBlock->pxNextFreeBlock) + xHeapStructSize);
|
|
|
|
/* This block is being returned for use so must be taken out
|
|
of the list of free blocks. */
|
|
pxPreviousBlock->pxNextFreeBlock = pxBlock->pxNextFreeBlock;
|
|
|
|
/* If the block is larger than required it can be split into
|
|
two. */
|
|
if((pxBlock->xBlockSize - xWantedSize) > heapMINIMUM_BLOCK_SIZE) {
|
|
/* This block is to be split into two. Create a new
|
|
block following the number of bytes requested. The void
|
|
cast is used to prevent byte alignment warnings from the
|
|
compiler. */
|
|
pxNewBlockLink = (void*)(((uint8_t*)pxBlock) + xWantedSize);
|
|
configASSERT((((size_t)pxNewBlockLink) & portBYTE_ALIGNMENT_MASK) == 0);
|
|
|
|
/* Calculate the sizes of two blocks split from the
|
|
single block. */
|
|
pxNewBlockLink->xBlockSize = pxBlock->xBlockSize - xWantedSize;
|
|
pxBlock->xBlockSize = xWantedSize;
|
|
|
|
/* Insert the new block into the list of free blocks. */
|
|
prvInsertBlockIntoFreeList(pxNewBlockLink);
|
|
} else {
|
|
mtCOVERAGE_TEST_MARKER();
|
|
}
|
|
|
|
xFreeBytesRemaining -= pxBlock->xBlockSize;
|
|
|
|
if(xFreeBytesRemaining < xMinimumEverFreeBytesRemaining) {
|
|
xMinimumEverFreeBytesRemaining = xFreeBytesRemaining;
|
|
} else {
|
|
mtCOVERAGE_TEST_MARKER();
|
|
}
|
|
|
|
/* The block is being returned - it is allocated and owned
|
|
by the application and has no "next" block. */
|
|
pxBlock->xBlockSize |= xBlockAllocatedBit;
|
|
pxBlock->pxNextFreeBlock = NULL;
|
|
|
|
#ifdef HEAP_PRINT_DEBUG
|
|
print_heap_block = pxBlock;
|
|
#endif
|
|
} else {
|
|
mtCOVERAGE_TEST_MARKER();
|
|
}
|
|
} else {
|
|
mtCOVERAGE_TEST_MARKER();
|
|
}
|
|
} else {
|
|
mtCOVERAGE_TEST_MARKER();
|
|
}
|
|
|
|
traceMALLOC(pvReturn, xWantedSize);
|
|
}
|
|
(void)xTaskResumeAll();
|
|
|
|
#ifdef HEAP_PRINT_DEBUG
|
|
print_heap_malloc(print_heap_block, print_heap_block->xBlockSize & ~xBlockAllocatedBit);
|
|
#endif
|
|
|
|
#if(configUSE_MALLOC_FAILED_HOOK == 1)
|
|
{
|
|
if(pvReturn == NULL) {
|
|
extern void vApplicationMallocFailedHook(void);
|
|
vApplicationMallocFailedHook();
|
|
} else {
|
|
mtCOVERAGE_TEST_MARKER();
|
|
}
|
|
}
|
|
#endif
|
|
|
|
configASSERT((((size_t)pvReturn) & (size_t)portBYTE_ALIGNMENT_MASK) == 0);
|
|
|
|
furi_check(pvReturn);
|
|
pvReturn = memset(pvReturn, 0, to_wipe);
|
|
return pvReturn;
|
|
}
|
|
/*-----------------------------------------------------------*/
|
|
|
|
void vPortFree(void* pv) {
|
|
uint8_t* puc = (uint8_t*)pv;
|
|
BlockLink_t* pxLink;
|
|
|
|
if(pv != NULL) {
|
|
/* The memory being freed will have an BlockLink_t structure immediately
|
|
before it. */
|
|
puc -= xHeapStructSize;
|
|
|
|
/* This casting is to keep the compiler from issuing warnings. */
|
|
pxLink = (void*)puc;
|
|
|
|
/* Check the block is actually allocated. */
|
|
configASSERT((pxLink->xBlockSize & xBlockAllocatedBit) != 0);
|
|
configASSERT(pxLink->pxNextFreeBlock == NULL);
|
|
|
|
if((pxLink->xBlockSize & xBlockAllocatedBit) != 0) {
|
|
if(pxLink->pxNextFreeBlock == NULL) {
|
|
/* The block is being returned to the heap - it is no longer
|
|
allocated. */
|
|
pxLink->xBlockSize &= ~xBlockAllocatedBit;
|
|
|
|
#ifdef HEAP_PRINT_DEBUG
|
|
print_heap_free(pxLink);
|
|
#endif
|
|
|
|
vTaskSuspendAll();
|
|
{
|
|
furi_assert((size_t)pv >= SRAM_BASE);
|
|
furi_assert((size_t)pv < SRAM_BASE + 1024 * 256);
|
|
furi_assert((pxLink->xBlockSize - xHeapStructSize) < 1024 * 256);
|
|
furi_assert((int32_t)(pxLink->xBlockSize - xHeapStructSize) >= 0);
|
|
|
|
/* Add this block to the list of free blocks. */
|
|
xFreeBytesRemaining += pxLink->xBlockSize;
|
|
traceFREE(pv, pxLink->xBlockSize);
|
|
memset(pv, 0, pxLink->xBlockSize - xHeapStructSize);
|
|
prvInsertBlockIntoFreeList(((BlockLink_t*)pxLink));
|
|
}
|
|
(void)xTaskResumeAll();
|
|
} else {
|
|
mtCOVERAGE_TEST_MARKER();
|
|
}
|
|
} else {
|
|
mtCOVERAGE_TEST_MARKER();
|
|
}
|
|
} else {
|
|
#ifdef HEAP_PRINT_DEBUG
|
|
print_heap_free(pv);
|
|
#endif
|
|
}
|
|
}
|
|
/*-----------------------------------------------------------*/
|
|
|
|
size_t xPortGetTotalHeapSize(void) {
|
|
return (size_t)&__heap_end__ - (size_t)&__heap_start__;
|
|
}
|
|
/*-----------------------------------------------------------*/
|
|
|
|
size_t xPortGetFreeHeapSize(void) {
|
|
return xFreeBytesRemaining;
|
|
}
|
|
/*-----------------------------------------------------------*/
|
|
|
|
size_t xPortGetMinimumEverFreeHeapSize(void) {
|
|
return xMinimumEverFreeBytesRemaining;
|
|
}
|
|
/*-----------------------------------------------------------*/
|
|
|
|
void vPortInitialiseBlocks(void) {
|
|
/* This just exists to keep the linker quiet. */
|
|
}
|
|
/*-----------------------------------------------------------*/
|
|
|
|
static void prvHeapInit(void) {
|
|
BlockLink_t* pxFirstFreeBlock;
|
|
uint8_t* pucAlignedHeap;
|
|
size_t uxAddress;
|
|
size_t xTotalHeapSize = (size_t)&__heap_end__ - (size_t)&__heap_start__;
|
|
|
|
/* Ensure the heap starts on a correctly aligned boundary. */
|
|
uxAddress = (size_t)ucHeap;
|
|
|
|
if((uxAddress & portBYTE_ALIGNMENT_MASK) != 0) {
|
|
uxAddress += (portBYTE_ALIGNMENT - 1);
|
|
uxAddress &= ~((size_t)portBYTE_ALIGNMENT_MASK);
|
|
xTotalHeapSize -= uxAddress - (size_t)ucHeap;
|
|
}
|
|
|
|
pucAlignedHeap = (uint8_t*)uxAddress;
|
|
|
|
/* xStart is used to hold a pointer to the first item in the list of free
|
|
blocks. The void cast is used to prevent compiler warnings. */
|
|
xStart.pxNextFreeBlock = (void*)pucAlignedHeap;
|
|
xStart.xBlockSize = (size_t)0;
|
|
|
|
/* pxEnd is used to mark the end of the list of free blocks and is inserted
|
|
at the end of the heap space. */
|
|
uxAddress = ((size_t)pucAlignedHeap) + xTotalHeapSize;
|
|
uxAddress -= xHeapStructSize;
|
|
uxAddress &= ~((size_t)portBYTE_ALIGNMENT_MASK);
|
|
pxEnd = (void*)uxAddress;
|
|
pxEnd->xBlockSize = 0;
|
|
pxEnd->pxNextFreeBlock = NULL;
|
|
|
|
/* To start with there is a single free block that is sized to take up the
|
|
entire heap space, minus the space taken by pxEnd. */
|
|
pxFirstFreeBlock = (void*)pucAlignedHeap;
|
|
pxFirstFreeBlock->xBlockSize = uxAddress - (size_t)pxFirstFreeBlock;
|
|
pxFirstFreeBlock->pxNextFreeBlock = pxEnd;
|
|
|
|
/* Only one block exists - and it covers the entire usable heap space. */
|
|
xMinimumEverFreeBytesRemaining = pxFirstFreeBlock->xBlockSize;
|
|
xFreeBytesRemaining = pxFirstFreeBlock->xBlockSize;
|
|
|
|
/* Work out the position of the top bit in a size_t variable. */
|
|
xBlockAllocatedBit = ((size_t)1) << ((sizeof(size_t) * heapBITS_PER_BYTE) - 1);
|
|
}
|
|
/*-----------------------------------------------------------*/
|
|
|
|
static void prvInsertBlockIntoFreeList(BlockLink_t* pxBlockToInsert) {
|
|
BlockLink_t* pxIterator;
|
|
uint8_t* puc;
|
|
|
|
/* Iterate through the list until a block is found that has a higher address
|
|
than the block being inserted. */
|
|
for(pxIterator = &xStart; pxIterator->pxNextFreeBlock < pxBlockToInsert;
|
|
pxIterator = pxIterator->pxNextFreeBlock) {
|
|
/* Nothing to do here, just iterate to the right position. */
|
|
}
|
|
|
|
/* Do the block being inserted, and the block it is being inserted after
|
|
make a contiguous block of memory? */
|
|
puc = (uint8_t*)pxIterator;
|
|
if((puc + pxIterator->xBlockSize) == (uint8_t*)pxBlockToInsert) {
|
|
pxIterator->xBlockSize += pxBlockToInsert->xBlockSize;
|
|
pxBlockToInsert = pxIterator;
|
|
} else {
|
|
mtCOVERAGE_TEST_MARKER();
|
|
}
|
|
|
|
/* Do the block being inserted, and the block it is being inserted before
|
|
make a contiguous block of memory? */
|
|
puc = (uint8_t*)pxBlockToInsert;
|
|
if((puc + pxBlockToInsert->xBlockSize) == (uint8_t*)pxIterator->pxNextFreeBlock) {
|
|
if(pxIterator->pxNextFreeBlock != pxEnd) {
|
|
/* Form one big block from the two blocks. */
|
|
pxBlockToInsert->xBlockSize += pxIterator->pxNextFreeBlock->xBlockSize;
|
|
pxBlockToInsert->pxNextFreeBlock = pxIterator->pxNextFreeBlock->pxNextFreeBlock;
|
|
} else {
|
|
pxBlockToInsert->pxNextFreeBlock = pxEnd;
|
|
}
|
|
} else {
|
|
pxBlockToInsert->pxNextFreeBlock = pxIterator->pxNextFreeBlock;
|
|
}
|
|
|
|
/* If the block being inserted plugged a gab, so was merged with the block
|
|
before and the block after, then it's pxNextFreeBlock pointer will have
|
|
already been set, and should not be set here as that would make it point
|
|
to itself. */
|
|
if(pxIterator != pxBlockToInsert) {
|
|
pxIterator->pxNextFreeBlock = pxBlockToInsert;
|
|
} else {
|
|
mtCOVERAGE_TEST_MARKER();
|
|
}
|
|
}
|