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Added ability to change task notification index for streambuffers (#939)

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* Added possibility to change notification index for streambuffers

* Uncrustify: triggered by comment.

* Minor code review suggestions.

Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>

---------

Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>
Co-authored-by: GitHub Action <action@github.com>
Co-authored-by: Aniruddha Kanhere <60444055+AniruddhaKanhere@users.noreply.github.com>
Co-authored-by: Gaurav Aggarwal <aggarg@amazon.com>
pull/946/head
Gabriele Monaco 1 year ago committed by GitHub
parent 4568507507
commit 1947dd2f94
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 183 additions and 70 deletions
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17
include/FreeRTOS.h
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@ -2509,6 +2509,22 @@
#define traceRETURN_xStreamBufferReceiveCompletedFromISR( xReturn )
#endif
#ifndef traceENTER_uxStreamBufferGetStreamBufferNotificationIndex
#define traceENTER_uxStreamBufferGetStreamBufferNotificationIndex( xStreamBuffer )
#endif
#ifndef traceRETURN_uxStreamBufferGetStreamBufferNotificationIndex
#define traceRETURN_uxStreamBufferGetStreamBufferNotificationIndex( uxNotificationIndex )
#endif
#ifndef traceENTER_vStreamBufferSetStreamBufferNotificationIndex
#define traceENTER_vStreamBufferSetStreamBufferNotificationIndex( xStreamBuffer, uxNotificationIndex )
#endif
#ifndef traceRETURN_vStreamBufferSetStreamBufferNotificationIndex
#define traceRETURN_vStreamBufferSetStreamBufferNotificationIndex()
#endif
#ifndef traceENTER_uxStreamBufferGetStreamBufferNumber
#define traceENTER_uxStreamBufferGetStreamBufferNumber( xStreamBuffer )
#endif
@ -3271,6 +3287,7 @@ typedef struct xSTATIC_STREAM_BUFFER
#if ( configUSE_SB_COMPLETED_CALLBACK == 1 )
void * pvDummy5[ 2 ];
#endif
UBaseType_t uxDummy6;
} StaticStreamBuffer_t;
/* Message buffers are built on stream buffers. */

51
include/stream_buffer.h
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@ -911,6 +911,57 @@ BaseType_t xStreamBufferSendCompletedFromISR( StreamBufferHandle_t xStreamBuffer
BaseType_t xStreamBufferReceiveCompletedFromISR( StreamBufferHandle_t xStreamBuffer,
BaseType_t * pxHigherPriorityTaskWoken ) PRIVILEGED_FUNCTION;
/**
* stream_buffer.h
*
* @code{c}
* UBaseType_t uxStreamBufferGetStreamBufferNotificationIndex( StreamBufferHandle_t xStreamBuffer );
* @endcode
*
* Get the task notification index used for the supplied stream buffer which can
* be set using vStreamBufferSetStreamBufferNotificationIndex. If the task
* notification index for the stream buffer is not changed using
* vStreamBufferSetStreamBufferNotificationIndex, this function returns the
* default value (tskDEFAULT_INDEX_TO_NOTIFY).
*
* @param xStreamBuffer The handle of the stream buffer for which the task
* notification index is retrieved.
*
* @return The task notification index for the stream buffer.
*
* \defgroup uxStreamBufferGetStreamBufferNotificationIndex uxStreamBufferGetStreamBufferNotificationIndex
* \ingroup StreamBufferManagement
*/
UBaseType_t uxStreamBufferGetStreamBufferNotificationIndex( StreamBufferHandle_t xStreamBuffer ) PRIVILEGED_FUNCTION;
/**
* stream_buffer.h
*
* @code{c}
* void vStreamBufferSetStreamBufferNotificationIndex ( StreamBuffer_t xStreamBuffer, UBaseType_t uxNotificationIndex );
* @endcode
*
* Set the task notification index used for the supplied stream buffer.
* Successive calls to stream buffer APIs (like xStreamBufferSend or
* xStreamBufferReceive) for this stream buffer will use this new index for
* their task notifications.
*
* If this function is not called, the default index (tskDEFAULT_INDEX_TO_NOTIFY)
* is used for task notifications. It is recommended to call this function
* before attempting to send or receive data from the stream buffer to avoid
* inconsistencies.
*
* @param xStreamBuffer The handle of the stream buffer for which the task
* notification index is set.
*
* @param uxNotificationIndex The task notification index to set.
*
* \defgroup vStreamBufferSetStreamBufferNotificationIndex vStreamBufferSetStreamBufferNotificationIndex
* \ingroup StreamBufferManagement
*/
void vStreamBufferSetStreamBufferNotificationIndex( StreamBufferHandle_t xStreamBuffer,
UBaseType_t uxNotificationIndex ) PRIVILEGED_FUNCTION;
/* Functions below here are not part of the public API. */
StreamBufferHandle_t xStreamBufferGenericCreate( size_t xBufferSizeBytes,
size_t xTriggerLevelBytes,

185
stream_buffer.c
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@ -56,20 +56,21 @@
* or #defined the notification macros away, then provide default implementations
* that uses task notifications. */
#ifndef sbRECEIVE_COMPLETED
#define sbRECEIVE_COMPLETED( pxStreamBuffer ) \
do \
{ \
vTaskSuspendAll(); \
{ \
if( ( pxStreamBuffer )->xTaskWaitingToSend != NULL ) \
{ \
( void ) xTaskNotify( ( pxStreamBuffer )->xTaskWaitingToSend, \
( uint32_t ) 0, \
eNoAction ); \
( pxStreamBuffer )->xTaskWaitingToSend = NULL; \
} \
} \
( void ) xTaskResumeAll(); \
#define sbRECEIVE_COMPLETED( pxStreamBuffer ) \
do \
{ \
vTaskSuspendAll(); \
{ \
if( ( pxStreamBuffer )->xTaskWaitingToSend != NULL ) \
{ \
( void ) xTaskNotifyIndexed( ( pxStreamBuffer )->xTaskWaitingToSend, \
( pxStreamBuffer )->uxNotificationIndex, \
( uint32_t ) 0, \
eNoAction ); \
( pxStreamBuffer )->xTaskWaitingToSend = NULL; \
} \
} \
( void ) xTaskResumeAll(); \
} while( 0 )
#endif /* sbRECEIVE_COMPLETED */
@ -93,23 +94,24 @@
#endif /* if ( configUSE_SB_COMPLETED_CALLBACK == 1 ) */
#ifndef sbRECEIVE_COMPLETED_FROM_ISR
#define sbRECEIVE_COMPLETED_FROM_ISR( pxStreamBuffer, \
pxHigherPriorityTaskWoken ) \
do { \
UBaseType_t uxSavedInterruptStatus; \
\
uxSavedInterruptStatus = taskENTER_CRITICAL_FROM_ISR(); \
{ \
if( ( pxStreamBuffer )->xTaskWaitingToSend != NULL ) \
{ \
( void ) xTaskNotifyFromISR( ( pxStreamBuffer )->xTaskWaitingToSend, \
( uint32_t ) 0, \
eNoAction, \
( pxHigherPriorityTaskWoken ) ); \
( pxStreamBuffer )->xTaskWaitingToSend = NULL; \
} \
} \
taskEXIT_CRITICAL_FROM_ISR( uxSavedInterruptStatus ); \
#define sbRECEIVE_COMPLETED_FROM_ISR( pxStreamBuffer, \
pxHigherPriorityTaskWoken ) \
do { \
UBaseType_t uxSavedInterruptStatus; \
\
uxSavedInterruptStatus = taskENTER_CRITICAL_FROM_ISR(); \
{ \
if( ( pxStreamBuffer )->xTaskWaitingToSend != NULL ) \
{ \
( void ) xTaskNotifyIndexedFromISR( ( pxStreamBuffer )->xTaskWaitingToSend, \
( pxStreamBuffer )->uxNotificationIndex, \
( uint32_t ) 0, \
eNoAction, \
( pxHigherPriorityTaskWoken ) ); \
( pxStreamBuffer )->xTaskWaitingToSend = NULL; \
} \
} \
taskEXIT_CRITICAL_FROM_ISR( uxSavedInterruptStatus ); \
} while( 0 )
#endif /* sbRECEIVE_COMPLETED_FROM_ISR */
@ -136,17 +138,18 @@
* implementation that uses task notifications.
*/
#ifndef sbSEND_COMPLETED
#define sbSEND_COMPLETED( pxStreamBuffer ) \
vTaskSuspendAll(); \
{ \
if( ( pxStreamBuffer )->xTaskWaitingToReceive != NULL ) \
{ \
( void ) xTaskNotify( ( pxStreamBuffer )->xTaskWaitingToReceive, \
( uint32_t ) 0, \
eNoAction ); \
( pxStreamBuffer )->xTaskWaitingToReceive = NULL; \
} \
} \
#define sbSEND_COMPLETED( pxStreamBuffer ) \
vTaskSuspendAll(); \
{ \
if( ( pxStreamBuffer )->xTaskWaitingToReceive != NULL ) \
{ \
( void ) xTaskNotifyIndexed( ( pxStreamBuffer )->xTaskWaitingToReceive, \
( pxStreamBuffer )->uxNotificationIndex, \
( uint32_t ) 0, \
eNoAction ); \
( pxStreamBuffer )->xTaskWaitingToReceive = NULL; \
} \
} \
( void ) xTaskResumeAll()
#endif /* sbSEND_COMPLETED */
@ -171,22 +174,23 @@
#ifndef sbSEND_COMPLETE_FROM_ISR
#define sbSEND_COMPLETE_FROM_ISR( pxStreamBuffer, pxHigherPriorityTaskWoken ) \
do { \
UBaseType_t uxSavedInterruptStatus; \
\
uxSavedInterruptStatus = taskENTER_CRITICAL_FROM_ISR(); \
{ \
if( ( pxStreamBuffer )->xTaskWaitingToReceive != NULL ) \
{ \
( void ) xTaskNotifyFromISR( ( pxStreamBuffer )->xTaskWaitingToReceive, \
( uint32_t ) 0, \
eNoAction, \
( pxHigherPriorityTaskWoken ) ); \
( pxStreamBuffer )->xTaskWaitingToReceive = NULL; \
} \
} \
taskEXIT_CRITICAL_FROM_ISR( uxSavedInterruptStatus ); \
#define sbSEND_COMPLETE_FROM_ISR( pxStreamBuffer, pxHigherPriorityTaskWoken ) \
do { \
UBaseType_t uxSavedInterruptStatus; \
\
uxSavedInterruptStatus = taskENTER_CRITICAL_FROM_ISR(); \
{ \
if( ( pxStreamBuffer )->xTaskWaitingToReceive != NULL ) \
{ \
( void ) xTaskNotifyIndexedFromISR( ( pxStreamBuffer )->xTaskWaitingToReceive, \
( pxStreamBuffer )->uxNotificationIndex, \
( uint32_t ) 0, \
eNoAction, \
( pxHigherPriorityTaskWoken ) ); \
( pxStreamBuffer )->xTaskWaitingToReceive = NULL; \
} \
} \
taskEXIT_CRITICAL_FROM_ISR( uxSavedInterruptStatus ); \
} while( 0 )
#endif /* sbSEND_COMPLETE_FROM_ISR */
@ -237,6 +241,7 @@ typedef struct StreamBufferDef_t
StreamBufferCallbackFunction_t pxSendCompletedCallback; /* Optional callback called on send complete. sbSEND_COMPLETED is called if this is NULL. */
StreamBufferCallbackFunction_t pxReceiveCompletedCallback; /* Optional callback called on receive complete. sbRECEIVE_COMPLETED is called if this is NULL. */
#endif
UBaseType_t uxNotificationIndex; /* The index we are using for notification, by default tskDEFAULT_INDEX_TO_NOTIFY. */
} StreamBuffer_t;
/*
@ -790,7 +795,7 @@ size_t xStreamBufferSend( StreamBufferHandle_t xStreamBuffer,
if( xSpace < xRequiredSpace )
{
/* Clear notification state as going to wait for space. */
( void ) xTaskNotifyStateClear( NULL );
( void ) xTaskNotifyStateClearIndexed( NULL, pxStreamBuffer->uxNotificationIndex );
/* Should only be one writer. */
configASSERT( pxStreamBuffer->xTaskWaitingToSend == NULL );
@ -805,7 +810,7 @@ size_t xStreamBufferSend( StreamBufferHandle_t xStreamBuffer,
taskEXIT_CRITICAL();
traceBLOCKING_ON_STREAM_BUFFER_SEND( xStreamBuffer );
( void ) xTaskNotifyWait( ( uint32_t ) 0, ( uint32_t ) 0, NULL, xTicksToWait );
( void ) xTaskNotifyWaitIndexed( pxStreamBuffer->uxNotificationIndex, ( uint32_t ) 0, ( uint32_t ) 0, NULL, xTicksToWait );
pxStreamBuffer->xTaskWaitingToSend = NULL;
} while( xTaskCheckForTimeOut( &xTimeOut, &xTicksToWait ) == pdFALSE );
}
@ -1001,7 +1006,7 @@ size_t xStreamBufferReceive( StreamBufferHandle_t xStreamBuffer,
if( xBytesAvailable <= xBytesToStoreMessageLength )
{
/* Clear notification state as going to wait for data. */
( void ) xTaskNotifyStateClear( NULL );
( void ) xTaskNotifyStateClearIndexed( NULL, pxStreamBuffer->uxNotificationIndex );
/* Should only be one reader. */
configASSERT( pxStreamBuffer->xTaskWaitingToReceive == NULL );
@ -1018,7 +1023,7 @@ size_t xStreamBufferReceive( StreamBufferHandle_t xStreamBuffer,
{
/* Wait for data to be available. */
traceBLOCKING_ON_STREAM_BUFFER_RECEIVE( xStreamBuffer );
( void ) xTaskNotifyWait( ( uint32_t ) 0, ( uint32_t ) 0, NULL, xTicksToWait );
( void ) xTaskNotifyWaitIndexed( pxStreamBuffer->uxNotificationIndex, ( uint32_t ) 0, ( uint32_t ) 0, NULL, xTicksToWait );
pxStreamBuffer->xTaskWaitingToReceive = NULL;
/* Recheck the data available after blocking. */
@ -1307,10 +1312,11 @@ BaseType_t xStreamBufferSendCompletedFromISR( StreamBufferHandle_t xStreamBuffer
{
if( ( pxStreamBuffer )->xTaskWaitingToReceive != NULL )
{
( void ) xTaskNotifyFromISR( ( pxStreamBuffer )->xTaskWaitingToReceive,
( uint32_t ) 0,
eNoAction,
pxHigherPriorityTaskWoken );
( void ) xTaskNotifyIndexedFromISR( ( pxStreamBuffer )->xTaskWaitingToReceive,
( pxStreamBuffer )->uxNotificationIndex,
( uint32_t ) 0,
eNoAction,
pxHigherPriorityTaskWoken );
( pxStreamBuffer )->xTaskWaitingToReceive = NULL;
xReturn = pdTRUE;
}
@ -1342,10 +1348,11 @@ BaseType_t xStreamBufferReceiveCompletedFromISR( StreamBufferHandle_t xStreamBuf
{
if( ( pxStreamBuffer )->xTaskWaitingToSend != NULL )
{
( void ) xTaskNotifyFromISR( ( pxStreamBuffer )->xTaskWaitingToSend,
( uint32_t ) 0,
eNoAction,
pxHigherPriorityTaskWoken );
( void ) xTaskNotifyIndexedFromISR( ( pxStreamBuffer )->xTaskWaitingToSend,
( pxStreamBuffer )->uxNotificationIndex,
( uint32_t ) 0,
eNoAction,
pxHigherPriorityTaskWoken );
( pxStreamBuffer )->xTaskWaitingToSend = NULL;
xReturn = pdTRUE;
}
@ -1499,6 +1506,7 @@ static void prvInitialiseNewStreamBuffer( StreamBuffer_t * const pxStreamBuffer,
pxStreamBuffer->xLength = xBufferSizeBytes;
pxStreamBuffer->xTriggerLevelBytes = xTriggerLevelBytes;
pxStreamBuffer->ucFlags = ucFlags;
pxStreamBuffer->uxNotificationIndex = tskDEFAULT_INDEX_TO_NOTIFY;
#if ( configUSE_SB_COMPLETED_CALLBACK == 1 )
{
pxStreamBuffer->pxSendCompletedCallback = pxSendCompletedCallback;
@ -1518,6 +1526,43 @@ static void prvInitialiseNewStreamBuffer( StreamBuffer_t * const pxStreamBuffer,
}
#endif /* if ( configUSE_SB_COMPLETED_CALLBACK == 1 ) */
}
/*-----------------------------------------------------------*/
UBaseType_t uxStreamBufferGetStreamBufferNotificationIndex( StreamBufferHandle_t xStreamBuffer )
{
StreamBuffer_t * const pxStreamBuffer = xStreamBuffer;
traceENTER_uxStreamBufferGetStreamBufferNotificationIndex( xStreamBuffer );
configASSERT( pxStreamBuffer );
traceRETURN_uxStreamBufferGetStreamBufferNotificationIndex( pxStreamBuffer->uxNotificationIndex );
return pxStreamBuffer->uxNotificationIndex;
}
/*-----------------------------------------------------------*/
void vStreamBufferSetStreamBufferNotificationIndex( StreamBufferHandle_t xStreamBuffer,
UBaseType_t uxNotificationIndex )
{
StreamBuffer_t * const pxStreamBuffer = xStreamBuffer;
traceENTER_vStreamBufferSetStreamBufferNotificationIndex( xStreamBuffer, uxNotificationIndex );
configASSERT( pxStreamBuffer );
/* There should be no task waiting otherwise we'd never resume them. */
configASSERT( pxStreamBuffer->xTaskWaitingToReceive == NULL );
configASSERT( pxStreamBuffer->xTaskWaitingToSend == NULL );
/* Check that the task notification index is valid. */
configASSERT( uxNotificationIndex < configTASK_NOTIFICATION_ARRAY_ENTRIES );
pxStreamBuffer->uxNotificationIndex = uxNotificationIndex;
traceRETURN_vStreamBufferSetStreamBufferNotificationIndex();
}
/*-----------------------------------------------------------*/
#if ( configUSE_TRACE_FACILITY == 1 )

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