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ninlight-w600/sdk/Platform/Common/mem/wm_mem.c
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Michael Sauer 1b0501179d build: W600-SDK importiert, Firmware-Build und Hello am EVK 
Docker-Build mit gcc-arm-none-eabi 4.9-2014q4 (statt Homebrew-Cask) verwendet,
Dockerfile/tools/docker.sh dafür aus Task 13 vorgezogen. cmake/sdk.cmake schont
gcc 4.9 (kennt -fcommon/-Wno-error=... nicht). Zwei zusätzliche SDK-Stubs
(EarlyInit, pre_gpio_config) in src/sys/sdk_stubs.c ergänzt, siehe sdk/PATCHES.md.
2026-09-11 12:52:26 +02:00

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/*****************************************************************************
*
* File Name : wm_mem.c
*
* Description: memory manager Module
*
* Copyright (c) 2014 Winner Micro Electronic Design Co., Ltd.
* All rights reserved.
*
* Author : dave
*
* Date : 2014-6-12
*****************************************************************************/
#include "wm_osal.h"
#include "wm_mem.h"
#include "list.h"
#include <string.h>
extern u8 tls_get_isr_count(void);
/**
* This variable is set if the memory mananger has been initialized.
* This is available only for debug version of the driver
*/
bool memory_manager_initialized = false;
/**
* This mutex is used to synchronize the list of allocated
* memory blocks. This is a debug version only feature
*/
tls_os_sem_t *mem_sem;
#if WM_MEM_DEBUG
struct dl_list memory_used_list;
struct dl_list memory_free_list;
#define MEM_BLOCK_SIZE 600
MEMORY_BLOCK mem_blocks[MEM_BLOCK_SIZE];
u32 alloc_heap_mem_bytes = 0;
u32 alloc_heap_mem_blk_cnt = 0;
u32 alloc_heap_mem_max_size = 0;
#define PRE_OVERSIZE 0
#define OVERSIZE 0
/**
* This is a debug only function that performs memory management operations for us.
* Memory allocated using this function is tracked, flagged when leaked, and caught for
* overflows and underflows.
*
* \param size The size in bytes of memory to
* allocate
*
* \param file The full path of file where this
* function is invoked from
* \param line The line number in the file where this
* method was called from
* \return Pointer to the allocated memory or NULL in case of a failure
*/
void * mem_alloc_debug(u32 size, char* file, int line)
{
void *buf = NULL;
u32 pad_len;
int i = 0;
u32 cpu_sr;
//
// If the memory manager has not been initialized, do so now
//
cpu_sr = tls_os_set_critical();
if (!memory_manager_initialized) {
tls_os_status_t os_status;
memory_manager_initialized = true;
//
// NOTE: If two thread allocate the very first allocation simultaneously
// it could cause double initialization of the memory manager. This is a
// highly unlikely scenario and will occur in debug versions only.
//
os_status = tls_os_sem_create(&mem_sem, 1);
if(os_status != TLS_OS_SUCCESS)
printf("mem_alloc_debug: tls_os_sem_create mem_sem error\n");
dl_list_init(&memory_used_list);
dl_list_init(&memory_free_list);
for(i = 0; i < MEM_BLOCK_SIZE; i++)
{
dl_list_add_tail(&memory_free_list, &mem_blocks[i].list);
}
}
tls_os_release_critical(cpu_sr);
tls_os_sem_acquire(mem_sem, 0);
cpu_sr = tls_os_set_critical();
//
// Allocate the required memory chunk plus header and trailer bytes
//
pad_len = sizeof(u32) - (size & 0x3);
buf = malloc(sizeof(MEMORY_PATTERN) + PRE_OVERSIZE + size + pad_len + OVERSIZE + sizeof(MEMORY_PATTERN));
if (buf) {
//
// Memory allocation succeeded. Add information about the allocated
// block in the list that tracks all allocations.
//
PMEMORY_PATTERN mem_ptn_hd;
PMEMORY_PATTERN mem_ptn_tl;
PMEMORY_BLOCK mem_blk_hd1;
if(dl_list_empty(&memory_free_list))
{
printf("Memory blocks empty!\n");
free(buf);
tls_os_release_critical(cpu_sr);
tls_os_sem_release(mem_sem);
tls_mem_alloc_info();
return NULL;
}
mem_blk_hd1 = dl_list_first(&memory_free_list, MEMORY_BLOCK, list);
dl_list_del(&mem_blk_hd1->list);
dl_list_add_tail(&memory_used_list, &mem_blk_hd1->list);
alloc_heap_mem_bytes += size+sizeof(MEMORY_PATTERN)+sizeof(MEMORY_PATTERN)+pad_len + PRE_OVERSIZE + OVERSIZE;
alloc_heap_mem_blk_cnt++;
if (alloc_heap_mem_bytes > alloc_heap_mem_max_size)
{
alloc_heap_mem_max_size = alloc_heap_mem_bytes;
//printf("alloc_heap_mem_max_size=%d\n", alloc_heap_mem_max_size);
}
mem_blk_hd1->pad = pad_len;
mem_blk_hd1->file = file;
mem_blk_hd1->line = line;
mem_blk_hd1->length = size;
mem_blk_hd1->header_pattern = (u32)buf;
// Fill in the memory header and trailer
mem_ptn_hd = (PMEMORY_PATTERN)buf;
mem_ptn_hd->pattern0= MEM_HEADER_PATTERN;
/*mem_ptn_hd->pattern1= MEM_HEADER_PATTERN;
mem_ptn_hd->pattern2= MEM_HEADER_PATTERN;
mem_ptn_hd->pattern3= MEM_HEADER_PATTERN;*/
mem_ptn_tl = (PMEMORY_PATTERN)(((u8 *)(buf))+size + sizeof(MEMORY_PATTERN)+pad_len + PRE_OVERSIZE + OVERSIZE);
mem_ptn_tl->pattern0= MEM_TAILER_PATTERN;
/*mem_ptn_tl->pattern1= MEM_TAILER_PATTERN;
mem_ptn_tl->pattern2= MEM_TAILER_PATTERN;
mem_ptn_tl->pattern3= MEM_TAILER_PATTERN;*/
// Jump ahead by memory header so pointer returned to caller points at the right place
buf = ((u8 *)buf) + sizeof (MEMORY_PATTERN) + PRE_OVERSIZE;
#if 0
printf("==>Memory was allocated from %s at line %d with length %d\n",
mem_blk_hd->file,
mem_blk_hd->line,
mem_blk_hd->length);
printf("==>mem alloc ptr = 0x%x\n", buf);
#endif
}
else
{
printf("==>Memory was allocated from %s at line %d with length %d, allocated size %d, count %d\n",
file,
line,
size, alloc_heap_mem_bytes, alloc_heap_mem_blk_cnt);
tls_os_release_critical(cpu_sr);
tls_os_sem_release(mem_sem);
tls_mem_alloc_info();
return buf;
}
tls_os_release_critical(cpu_sr);
tls_os_sem_release(mem_sem);
return buf;
}
void * mem_calloc_debug(u32 n, u32 size, char* file, int line)
{
void *buf = NULL;
u32 pad_len;
int i = 0;
u32 cpu_sr;
//
// If the memory manager has not been initialized, do so now
//
cpu_sr = tls_os_set_critical();
if (!memory_manager_initialized) {
tls_os_status_t os_status;
memory_manager_initialized = true;
//
// NOTE: If two thread allocate the very first allocation simultaneously
// it could cause double initialization of the memory manager. This is a
// highly unlikely scenario and will occur in debug versions only.
//
os_status = tls_os_sem_create(&mem_sem, 1);
if(os_status != TLS_OS_SUCCESS)
printf("mem_alloc_debug: tls_os_sem_create mem_sem error\n");
dl_list_init(&memory_used_list);
dl_list_init(&memory_free_list);
for(i = 0; i < MEM_BLOCK_SIZE; i++)
{
dl_list_add_tail(&memory_free_list, &mem_blocks[i].list);
}
}
tls_os_release_critical(cpu_sr);
tls_os_sem_acquire(mem_sem, 0);
cpu_sr = tls_os_set_critical();
//
// Allocate the required memory chunk plus header and trailer bytes
//
pad_len = sizeof(u32) - ((n*size) & 0x3);
buf = malloc(sizeof(MEMORY_PATTERN) + PRE_OVERSIZE + n*size + pad_len + OVERSIZE + sizeof(MEMORY_PATTERN));
if (buf) {
//
// Memory allocation succeeded. Add information about the allocated
// block in the list that tracks all allocations.
//
PMEMORY_PATTERN mem_ptn_hd;
PMEMORY_PATTERN mem_ptn_tl;
PMEMORY_BLOCK mem_blk_hd1;
if(dl_list_empty(&memory_free_list))
{
printf("Memory blocks empty!\n");
free(buf);
tls_os_release_critical(cpu_sr);
tls_os_sem_release(mem_sem);
tls_mem_alloc_info();
return NULL;
}
mem_blk_hd1 = dl_list_first(&memory_free_list, MEMORY_BLOCK, list);
dl_list_del(&mem_blk_hd1->list);
dl_list_add_tail(&memory_used_list, &mem_blk_hd1->list);
alloc_heap_mem_bytes += n*size+sizeof(MEMORY_PATTERN)+sizeof(MEMORY_PATTERN)+pad_len + PRE_OVERSIZE + OVERSIZE;
alloc_heap_mem_blk_cnt++;
if (alloc_heap_mem_bytes > alloc_heap_mem_max_size)
{
alloc_heap_mem_max_size = alloc_heap_mem_bytes;
//printf("alloc_heap_mem_max_size=%d\n", alloc_heap_mem_max_size);
}
mem_blk_hd1->pad = pad_len;
mem_blk_hd1->file = file;
mem_blk_hd1->line = line;
mem_blk_hd1->length = n*size;
mem_blk_hd1->header_pattern = (u32)buf;
// Fill in the memory header and trailer
mem_ptn_hd = (PMEMORY_PATTERN)buf;
mem_ptn_hd->pattern0= MEM_HEADER_PATTERN;
/*mem_ptn_hd->pattern1= MEM_HEADER_PATTERN;
mem_ptn_hd->pattern2= MEM_HEADER_PATTERN;
mem_ptn_hd->pattern3= MEM_HEADER_PATTERN;*/
mem_ptn_tl = (PMEMORY_PATTERN)(((u8 *)(buf))+n*size + sizeof(MEMORY_PATTERN)+pad_len + PRE_OVERSIZE + OVERSIZE);
mem_ptn_tl->pattern0= MEM_TAILER_PATTERN;
/*mem_ptn_tl->pattern1= MEM_TAILER_PATTERN;
mem_ptn_tl->pattern2= MEM_TAILER_PATTERN;
mem_ptn_tl->pattern3= MEM_TAILER_PATTERN;*/
// Jump ahead by memory header so pointer returned to caller points at the right place
buf = ((u8 *)buf) + sizeof (MEMORY_PATTERN) + PRE_OVERSIZE;
#if 0
printf("==>Memory was allocated from %s at line %d with length %d\n",
mem_blk_hd->file,
mem_blk_hd->line,
mem_blk_hd->length);
printf("==>mem alloc ptr = 0x%x\n", buf);
#endif
}
else
{
printf("==>Memory was allocated from %s at line %d with length %d, allocated size %d, count %d\n",
file,
line,
n*size, alloc_heap_mem_bytes, alloc_heap_mem_blk_cnt);
tls_os_release_critical(cpu_sr);
tls_os_sem_release(mem_sem);
tls_mem_alloc_info();
return buf;
}
tls_os_release_critical(cpu_sr);
tls_os_sem_release(mem_sem);
return buf;
}
/**
* This routine is called to free memory which was previously allocated using MpAllocateMemory function.
* Before freeing the memory, this function checks and makes sure that no overflow or underflows have
* happened and will also try to detect multiple frees of the same memory chunk.
*
* \param p Pointer to allocated memory
*/
void mem_free_debug(void *p, char* file, int line)
{
PMEMORY_PATTERN mem_ptn_hd;
PMEMORY_PATTERN mem_ptn_tl;
PMEMORY_BLOCK mem_blk_hd1;
u8 needfree = 0;
u8 haserr = 0;
u32 cpu_sr;
// Jump back by memory header size so we can get to the header
mem_ptn_hd = (PMEMORY_PATTERN) (((u8 *)p) - sizeof(MEMORY_PATTERN) - PRE_OVERSIZE);
tls_os_sem_acquire(mem_sem, 0);
cpu_sr = tls_os_set_critical();
dl_list_for_each(mem_blk_hd1, &memory_used_list, MEMORY_BLOCK, list){
if(mem_blk_hd1->header_pattern == (u32)mem_ptn_hd)
{
needfree = 1;
break;
}
}
if(needfree)
{
dl_list_del(&mem_blk_hd1->list);
dl_list_add_tail(&memory_free_list, &mem_blk_hd1->list);
alloc_heap_mem_bytes -= mem_blk_hd1->length + sizeof(MEMORY_PATTERN) + sizeof(MEMORY_PATTERN) + PRE_OVERSIZE + OVERSIZE +
mem_blk_hd1->pad;
alloc_heap_mem_blk_cnt--;
}
if(needfree == 0)
{
printf("Memory Block %p was deallocated from %s at line %d \n", mem_ptn_hd, file, line);
printf("Memory %p has been deallocated!\n", p);
dl_list_for_each_reverse(mem_blk_hd1, &memory_free_list, MEMORY_BLOCK, list){
if(mem_blk_hd1->header_pattern == (u32)mem_ptn_hd)
{
printf("Memory Block %p has been put free list!\n", mem_ptn_hd);
break;
}
}
tls_os_release_critical(cpu_sr);
tls_os_sem_release(mem_sem);
tls_mem_alloc_info();
return;
}
#if 0
if(mem_blk_hd1->line == 976 || mem_blk_hd1->line == 983)
{
printf("Memory Block %p can not deallocated from %s at line %d \n", mem_ptn_hd, file, line);
printf("Memory %p has been deallocated!\n", p);
tls_mem_alloc_info();
}
#endif
mem_ptn_tl = (PMEMORY_PATTERN) ((u8 *)p + mem_blk_hd1->length + mem_blk_hd1->pad + OVERSIZE);
//
// Check that header was not corrupted
//
if (mem_ptn_hd->pattern0 != MEM_HEADER_PATTERN /*|| mem_ptn_hd->pattern1 != MEM_HEADER_PATTERN
|| mem_ptn_hd->pattern2 != MEM_HEADER_PATTERN || mem_ptn_hd->pattern3 != MEM_HEADER_PATTERN*/)
{
printf("Memory %p was deallocated from %s at line %d \n", p, file, line);
printf("Memory header corruption due to underflow detected at memory block %p\n",
mem_ptn_hd);
printf("Header pattern 0(0x%x)\n",//, 1(0x%x), 2(0x%x), 3(0x%x)
mem_ptn_hd->pattern0/*,
mem_ptn_hd->pattern1,
mem_ptn_hd->pattern2,
mem_ptn_hd->pattern3*/);
//printf("Dumping information about memory block. "
// "This information may itself have been "
// "corrupted and could cause machine to bugcheck.\n");
printf("Memory was allocated from %s at line %d with length %d\n",
mem_blk_hd1->file,
mem_blk_hd1->line,
mem_blk_hd1->length);
haserr = 1;
}
#if 0
printf("<==free memory allocated from %s at line %d with length %d\n",
mem_blk_hd->file,
mem_blk_hd->line,
mem_blk_hd->length);
printf("<==free memory 0x%x\n", (u8 *)mem_blk_hd+sizeof(*mem_blk_hd));
#endif
//
// Check that trailer was not corrupted
//
if(mem_ptn_tl->pattern0 != MEM_TAILER_PATTERN /*|| mem_ptn_tl->pattern1 != MEM_TAILER_PATTERN
|| mem_ptn_tl->pattern2 != MEM_TAILER_PATTERN || mem_ptn_tl->pattern3 != MEM_TAILER_PATTERN*/) {
printf("Memory %p was deallocated from %s at line %d \n", p, file, line);
printf("Memory tailer corruption due to overflow detected at %p\n", mem_ptn_hd);
printf("Tailer pattern 0(0x%x)\n",//, 1(0x%x), 2(0x%x), 3(0x%x)
mem_ptn_tl->pattern0/*,
mem_ptn_tl->pattern1,
mem_ptn_tl->pattern2,
mem_ptn_tl->pattern3*/);
//printf("Dumping information about memory block. "
// "This information may itself have been "
// "corrupted and could cause machine to bugcheck.\n");
printf("Memory was allocated from %s at line %d with length %d\n",
mem_blk_hd1->file, mem_blk_hd1->line, mem_blk_hd1->length);
haserr = 1;
}
if(needfree){
free(mem_ptn_hd);
}
tls_os_release_critical(cpu_sr);
tls_os_sem_release(mem_sem);
if(haserr)
tls_mem_alloc_info();
}
void * mem_realloc_debug(void *mem_address, u32 size, char* file, int line)
{
void * mem_re_addr;
u32 cpu_sr;
if ((mem_re_addr = mem_alloc_debug(size, file, line)) == NULL){
printf("mem_realloc_debug failed(size=%d).\n", size);
return NULL;
}
if(mem_address != NULL)
{
cpu_sr = tls_os_set_critical();
memcpy(mem_re_addr, mem_address, size);
tls_os_release_critical(cpu_sr);
mem_free_debug(mem_address, file, line);
}
//printf("mem_realloc_debug mem_address=%p, mem_re_addr=%p, size=%d, file=%s, line=%d\n", mem_address, mem_re_addr, size, file, line);
return mem_re_addr;
}
void tls_mem_alloc_info(void)
{
int i;
MEMORY_BLOCK * pos;
u32 cpu_sr;
tls_os_sem_acquire(mem_sem, 0);
cpu_sr = tls_os_set_critical();
printf("==>Memory was allocated size %d, count %d\n",
alloc_heap_mem_bytes, alloc_heap_mem_blk_cnt);
i = 1;
dl_list_for_each(pos, &memory_used_list, MEMORY_BLOCK, list){
printf("Block(%2d): addr<%p>, file<%s>, line<%d>, length<%d>\n",
i, pos->header_pattern, pos->file, pos->line, pos->length);
i++;
}
tls_os_release_critical(cpu_sr);
tls_os_sem_release(mem_sem);
}
int is_safe_addr_debug(void* p, u32 len, char* file, int line)
{
int i;
MEMORY_BLOCK * pos;
u32 cpu_sr;
if(((u32)p) >= (u32)0x64ae8 || ((u32)p) < (u32)0x54ae8)
{
return 1;
}
tls_os_sem_acquire(mem_sem, 0);
cpu_sr = tls_os_set_critical();
i = 1;
dl_list_for_each(pos, &memory_used_list, MEMORY_BLOCK, list){
if((pos->header_pattern + sizeof (MEMORY_PATTERN) + PRE_OVERSIZE) <= ((u32)p) && ((u32)p) <= ((u32)(pos->header_pattern + sizeof(MEMORY_PATTERN) + PRE_OVERSIZE + pos->length)))
{
if(((u32)p) + len > ((u32)(pos->header_pattern + sizeof(MEMORY_PATTERN) + PRE_OVERSIZE + pos->length)))
{
printf("==>Memory oversize. Block(%2d): addr<%p>, file<%s>, line<%d>, length<%d>\n",
i, pos->header_pattern, pos->file, pos->line, pos->length);
break;
}
else
{
tls_os_release_critical(cpu_sr);
tls_os_sem_release(mem_sem);
return 1;
}
}
//else if(((u32)p) < pos->header_pattern)
//{
// //tls_os_release_critical(cpu_sr);
// tls_os_sem_release(mem_sem);
// return 1;
// }
i++;
}
tls_os_release_critical(cpu_sr);
tls_os_sem_release(mem_sem);
printf("==>Memory is not safe addr<%p>, file<%s>, line<%d>.\n",p, file, line);
return 0;
}
#else /* WM_MEM_DEBUG */
#if TLS_OS_FREERTOS
u32 alloc_heap_mem_bytes = 0;
u32 alloc_heap_mem_blk_cnt = 0;
u32 alloc_heap_mem_max_size = 0;
#define OS_MEM_FLAG (0x5AA5A55A)
#define MEM_HEAD_FLAG (0xBB55B55B)
#endif
void * mem_alloc_debug(u32 size)
{
u32 cpu_sr = 0;
u32 *buffer = NULL;
#if TLS_OS_FREERTOS
u32 flag = 0;
#endif
if (!memory_manager_initialized) {
tls_os_status_t os_status;
memory_manager_initialized = true;
//
// NOTE: If two thread allocate the very first allocation simultaneously
// it could cause double initialization of the memory manager. This is a
// highly unlikely scenario and will occur in debug versions only.
//
os_status = tls_os_sem_create(&mem_sem, 1);
if(os_status != TLS_OS_SUCCESS)
printf("mem_alloc_debug: tls_os_sem_create mem_sem error\n");
}
#if TLS_OS_FREERTOS
size += 8;
if(tls_get_isr_count() > 0)
{
extern void *pvPortMalloc( size_t xWantedSize );
buffer = pvPortMalloc(size);
flag = OS_MEM_FLAG;
}
else
{
tls_os_sem_acquire(mem_sem, 0);
cpu_sr = tls_os_set_critical();
buffer = (u32*)malloc(size);
}
if(buffer)
{
*buffer = MEM_HEAD_FLAG;
buffer++;
*buffer = flag;
buffer++;
}
if(tls_get_isr_count() == 0)
{
tls_os_release_critical(cpu_sr);
tls_os_sem_release(mem_sem);
}
#else //UCOSII
cpu_sr = tls_os_set_critical();
buffer = (u32*)malloc(size);
tls_os_release_critical(cpu_sr);
#endif
// if(buffer == NULL)
// {
// printf("malloc error \n");
// }
return buffer;
}
void mem_free_debug(void *p)
{
u32 cpu_sr = 0;
#if TLS_OS_FREERTOS
u32* intMemPtr = (void*)p;
if(tls_get_isr_count() == 0)
{
tls_os_sem_acquire(mem_sem, 0);
cpu_sr = tls_os_set_critical();
}
if(p)
{
intMemPtr = intMemPtr - 2;
if(*intMemPtr != MEM_HEAD_FLAG)
{
//printf("mem_free_debug ptr error!!!!!\n");
}
else
{
intMemPtr++;
if(*intMemPtr == OS_MEM_FLAG)
{
extern void vPortFree( void *pv );
intMemPtr -= 1;
vPortFree(intMemPtr);
}
else
{
intMemPtr -= 1;
free(intMemPtr);
}
}
}
if(tls_get_isr_count() == 0)
{
tls_os_release_critical(cpu_sr);
tls_os_sem_release(mem_sem);
}
#else //UCOSII
cpu_sr = tls_os_set_critical();
free(p);
tls_os_release_critical(cpu_sr);
#endif
}
void * mem_realloc_debug(void *mem_address, u32 size)
{
u32 * mem_re_addr = NULL;
u32 cpu_sr = 0;
#if TLS_OS_FREERTOS
u32 flag = 0;
u32 length = size + 8;
if(tls_get_isr_count() > 0)
{
extern void *pvPortMalloc( size_t xWantedSize );
mem_re_addr = pvPortMalloc(length);
flag = OS_MEM_FLAG;
if (mem_re_addr)
{
return NULL;
}
if(mem_address != NULL)
{
memcpy((u8 *)(mem_re_addr + 2), (u8 *)mem_address, size);
mem_free_debug(mem_address);
}
}
else
{
tls_os_sem_acquire(mem_sem, 0);
cpu_sr = tls_os_set_critical();
if (!mem_address)
{
mem_re_addr = (u32*)malloc(length);
}else{
mem_re_addr = (u32 *)realloc(((u32 *)mem_address-2), length);
}
}
if(mem_re_addr)
{
*mem_re_addr = MEM_HEAD_FLAG;
mem_re_addr++;
*mem_re_addr = flag;
mem_re_addr++;
}
if(tls_get_isr_count() == 0)
{
tls_os_release_critical(cpu_sr);
tls_os_sem_release(mem_sem);
}
#else
cpu_sr = tls_os_set_critical();
mem_re_addr = realloc(mem_address, size);
tls_os_release_critical(cpu_sr);
#endif
if(mem_re_addr == NULL)
{
printf("realloc error \n");
}
return mem_re_addr;
}
void *mem_calloc_debug(u32 n, u32 size)
{
u32 cpu_sr = 0;
u32 *buffer = NULL;
u32 length = 0;
#if TLS_OS_FREERTOS
u32 flag = 0;
length = n*size;
length += 8;
if(tls_get_isr_count() > 0)
{
extern void *pvPortMalloc( size_t xWantedSize );
buffer = pvPortMalloc(length);
flag = OS_MEM_FLAG;
}
else
{
tls_os_sem_acquire(mem_sem, 0);
cpu_sr = tls_os_set_critical();
buffer = (u32*)malloc(length);
}
if(buffer)
{
memset(buffer, 0, length);
*buffer = MEM_HEAD_FLAG;
buffer++;
*buffer = flag;
buffer++;
}
if(tls_get_isr_count() == 0)
{
tls_os_release_critical(cpu_sr);
tls_os_sem_release(mem_sem);
}
#else //UCOSII
cpu_sr = tls_os_set_critical();
buffer = (u32*)calloc(n,size);
tls_os_release_critical(cpu_sr);
#endif
// if(buffer == NULL)
// {
// printf("calloc error \n");
// }
return buffer;
}
/**
* @brief This function is used to get available memory
*
* @param[in] None
*
* @return None
*
* @note None.
*/
#if !defined(__CC_ARM)
extern unsigned int __HeapLimit;
#else
extern unsigned int __heap_limit;
#endif
unsigned int tls_mem_get_avail_heapsize(void)
{
unsigned int heap_size;
int *p = NULL;
unsigned int cpu_sr = 0;
tls_os_sem_acquire(mem_sem, 0);
cpu_sr = tls_os_set_critical();
p = malloc(4);
if (p)
{
#if !defined(__CC_ARM)
heap_size = (unsigned int)&__HeapLimit - (unsigned int)p;
#else
heap_size = (unsigned int)&__heap_limit - (unsigned int)p;
#endif
free(p);
p = NULL;
}else{
heap_size = 0;
}
tls_os_release_critical(cpu_sr);
tls_os_sem_release(mem_sem);
return heap_size;
}
#endif /* WM_MEM_DEBUG */
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