Heap Allocation Abstraction

Heap allocation abstraction to hide details of allocation from SRAM and CCM RAM. More...

Data Structures
struct	pios_heap

Macros
#define	DEBUG_MALLOC_FAILURES   0
#define	DEBUG_MALLOC_FAILURES   0

Functions
static void	malloc_failed_hook (void)
bool	PIOS_heap_malloc_failed_p (void)
static bool	is_ptr_in_heap_p (const struct pios_heap *heap, void *buf)
static void *	simple_malloc (struct pios_heap *heap, size_t size)
static void	simple_free (struct pios_heap *heap, void *buf)
static size_t	simple_get_free_bytes (struct pios_heap *heap)
static void	simple_extend_heap (struct pios_heap *heap, size_t bytes)
void *	pvPortMalloc (size_t size) __attribute__((alias("PIOS_malloc")
void *	PIOS_malloc (size_t size)
void *	PIOS_malloc_no_dma (size_t size)
void	vPortFree (void *buf) __attribute__((alias("PIOS_free")))
void	PIOS_free (void *buf)
size_t	xPortGetFreeHeapSize (void)
size_t	PIOS_fastheap_get_free_size (void)
void	PIOS_heap_initialize_blocks (void)
void	PIOS_heap_increase_size (size_t bytes)
void *	_sbrk (int incr)
size_t	PIOS_heap_get_free_size (void)

Variables
static volatile bool	malloc_failed_flag = false
struct pios_heap	__attribute__
const void *	_eheap
const void *	_sheap
static struct pios_heap	pios_standard_heap
void	weak
static uintptr_t	sbrk_pool [1024]
static uintptr_t	brk_ptr = (uintptr_t) sbrk_pool
static volatile bool	malloc_failed_flag = false

Detailed Description

Heap allocation abstraction to hide details of allocation from SRAM and CCM RAM.

Macro Definition Documentation

#define DEBUG_MALLOC_FAILURES   0

Definition at line 33 of file pios_heap.c.

#define DEBUG_MALLOC_FAILURES   0

Definition at line 35 of file pios_heap.c.

Function Documentation

void* _sbrk

(

int

incr

)

Definition at line 253 of file pios_heap.c.

static bool is_ptr_in_heap_p ( const struct pios_heap *  heap, void *  buf  )

static

Definition at line 62 of file pios_heap.c.

static void malloc_failed_hook ( void  )

static

Definition at line 37 of file pios_heap.c.

size_t PIOS_fastheap_get_free_size

(

void

)

Definition at line 221 of file pios_heap.c.

void PIOS_free

(

void *

buf

)

Definition at line 174 of file pios_heap.c.

size_t PIOS_heap_get_free_size

(

void

)

Definition at line 74 of file pios_heap.c.

void PIOS_heap_increase_size

(

size_t

bytes

)

Definition at line 233 of file pios_heap.c.

void PIOS_heap_initialize_blocks

(

void

)

Definition at line 228 of file pios_heap.c.

bool PIOS_heap_malloc_failed_p

(

void

)

Definition at line 47 of file pios_heap.c.

void * PIOS_malloc

(

size_t

size

)

Definition at line 125 of file pios_heap.c.

void * PIOS_malloc_no_dma

(

size_t

size

)

Definition at line 166 of file pios_heap.c.

void* pvPortMalloc

(

size_t

size

)

static void simple_extend_heap ( struct pios_heap *  heap, size_t  bytes  )

static

Definition at line 106 of file pios_heap.c.

static void simple_free ( struct pios_heap *  heap, void *  buf  )

static

Definition at line 93 of file pios_heap.c.

static size_t simple_get_free_bytes ( struct pios_heap *  heap )

static

Definition at line 98 of file pios_heap.c.

static void* simple_malloc ( struct pios_heap *  heap, size_t  size  )

static

Definition at line 69 of file pios_heap.c.

void vPortFree

(

void *

buf

)

size_t xPortGetFreeHeapSize

(

void

)

Definition at line 185 of file pios_heap.c.

Variable Documentation

struct pios_heap __attribute__

const void* _eheap

const void* _sheap

uintptr_t brk_ptr = (uintptr_t) sbrk_pool

static

Definition at line 251 of file pios_heap.c.

volatile bool malloc_failed_flag = false

static

Definition at line 34 of file pios_heap.c.

volatile bool malloc_failed_flag = false

static

Definition at line 36 of file pios_heap.c.

struct pios_heap pios_standard_heap

static

Initial value:

= {
        .start_addr = (const uintptr_t)&_sheap,
        .end_addr   = (const uintptr_t)&_eheap,
        .free_addr  = (uintptr_t)&_sheap,
}

Definition at line 117 of file pios_heap.c.

uintptr_t sbrk_pool[1024]

static

Definition at line 250 of file pios_heap.c.

void weak

Definition at line 124 of file pios_heap.c.