dali/bacnet_stack
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Added volatile qualifier to ringbuffer library to be interrupt safe.

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This commit is contained in:
skarg
2012-02-10 22:10:17 +00:00
parent 9226159c5d
commit 2e6a060b26
2 changed files with 20 additions and 20 deletions
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bacnet-stack/include/ringbuf.h
+4 -4
View File
@@ -61,14 +61,14 @@ extern "C" {
RING_BUFFER const *b); RING_BUFFER const *b);
bool Ringbuf_Empty( bool Ringbuf_Empty(
RING_BUFFER const *b); RING_BUFFER const *b);
uint8_t *Ringbuf_Get_Front( volatile uint8_t *Ringbuf_Get_Front(
RING_BUFFER const *b); RING_BUFFER const *b);
uint8_t *Ringbuf_Pop_Front( volatile uint8_t *Ringbuf_Pop_Front(
RING_BUFFER * b); RING_BUFFER * b);
bool Ringbuf_Put( bool Ringbuf_Put(
RING_BUFFER * b, /* ring buffer structure */ RING_BUFFER * b, /* ring buffer structure */
uint8_t * data_element); /* one element to add to the ring */ volatile uint8_t *data_element); /* one element to add to the ring */
uint8_t *Ringbuf_Alloc( volatile uint8_t *Ringbuf_Alloc(
RING_BUFFER *b); RING_BUFFER *b);
/* Note: element_count must be a power of two */ /* Note: element_count must be a power of two */
void Ringbuf_Init( void Ringbuf_Init(
bacnet-stack/src/ringbuf.c
+8 -8
View File
@@ -91,10 +91,10 @@ bool Ringbuf_Empty(
* ALGORITHM: none * ALGORITHM: none
* NOTES: none * NOTES: none
*****************************************************************************/ *****************************************************************************/
uint8_t *Ringbuf_Get_Front( volatile uint8_t *Ringbuf_Get_Front(
RING_BUFFER const *b) RING_BUFFER const *b)
{ {
uint8_t *data_element = NULL; /* return value */ volatile uint8_t *data_element = NULL; /* return value */
if (!Ringbuf_Empty(b)) { if (!Ringbuf_Empty(b)) {
data_element = b->buffer; data_element = b->buffer;
@@ -110,10 +110,10 @@ uint8_t *Ringbuf_Get_Front(
* ALGORITHM: none * ALGORITHM: none
* NOTES: none * NOTES: none
*****************************************************************************/ *****************************************************************************/
uint8_t *Ringbuf_Pop_Front( volatile uint8_t *Ringbuf_Pop_Front(
RING_BUFFER * b) RING_BUFFER * b)
{ {
uint8_t *data_element = NULL; volatile uint8_t *data_element = NULL;
if (!Ringbuf_Empty(b)) { if (!Ringbuf_Empty(b)) {
data_element = b->buffer; data_element = b->buffer;
@@ -132,10 +132,10 @@ uint8_t *Ringbuf_Pop_Front(
*****************************************************************************/ *****************************************************************************/
bool Ringbuf_Put( bool Ringbuf_Put(
RING_BUFFER * b, /* ring buffer structure */ RING_BUFFER * b, /* ring buffer structure */
uint8_t *data_element) volatile uint8_t *data_element)
{ /* one element to add to the ring */ { /* one element to add to the ring */
bool status = false; /* return value */ bool status = false; /* return value */
uint8_t *ring_data = NULL; /* used to help point ring data */ volatile uint8_t *ring_data = NULL; /* used to help point ring data */
unsigned i; /* loop counter */ unsigned i; /* loop counter */
if (b && data_element) { if (b && data_element) {
@@ -160,10 +160,10 @@ bool Ringbuf_Put(
* ALGORITHM: none * ALGORITHM: none
* NOTES: none * NOTES: none
*****************************************************************************/ *****************************************************************************/
uint8_t *Ringbuf_Alloc( volatile uint8_t *Ringbuf_Alloc(
RING_BUFFER *b) RING_BUFFER *b)
{ {
uint8_t *ring_data = NULL; /* used to help point ring data */ volatile uint8_t *ring_data = NULL; /* used to help point ring data */
if (b) { if (b) {
/* limit the amount of elements that we accept */ /* limit the amount of elements that we accept */