len0rd/FreeRTOS-Kernel
1
0
Fork 0
mirror of https://github.com/FreeRTOS/FreeRTOS-Kernel.git synced 2025-10-19 11:17:43 -04:00
Code Issues Projects Releases Packages Wiki Activity

Update to the latest atomic.h.

Browse source 
Improve commenting in RISC-V GCC port.
Fix IAR RISC-V port so the first task starts with interrupts enabled.
Add references to third party page ref using newlib with FreeRTOS into the tasks.c file in each place newlib is referenced.
Move the position of the traceTASK_DELETE() trace macro in case of use with a memory allocator that writes over freed memory even when inside a critical section.
Efficiency improvement:  Make sure xTaskIncrementTick() does not return pdTRUE when the scheduler is locked.  This just prevents an unnecessary yield interrupt (unnecessary as it is ignored) when xYieldPending happens to be pdTRUE.
This commit is contained in:
Richard Barry 2019-11-18 16:28:03 +00:00
parent 18916d5820
commit 16639d2d63
7 changed files with 206 additions and 178 deletions
Download patch file Download diff file Expand all files Collapse all files

49
FreeRTOS/Source/tasks.c
View file

@ -300,7 +300,10 @@ typedef struct tskTaskControlBlock /* The old naming convention is used to pr
responsible for resulting newlib operation. User must be familiar with
newlib and must provide system-wide implementations of the necessary
stubs. Be warned that (at the time of writing) the current newlib design
implements a system-wide malloc() that must be provided with locks. */
implements a system-wide malloc() that must be provided with locks.
See the third party link http://www.nadler.com/embedded/newlibAndFreeRTOS.html
for additional information. */
struct _reent xNewLib_reent;
#endif
@ -993,7 +996,9 @@ UBaseType_t x;
#if ( configUSE_NEWLIB_REENTRANT == 1 )
{
/* Initialise this task's Newlib reent structure. */
/* Initialise this task's Newlib reent structure.
See the third party link http://www.nadler.com/embedded/newlibAndFreeRTOS.html
for additional information. */
_REENT_INIT_PTR( ( &( pxNewTCB->xNewLib_reent ) ) );
}
#endif
@ -1218,12 +1223,12 @@ static void prvAddNewTaskToReadyList( TCB_t *pxNewTCB )
else
{
--uxCurrentNumberOfTasks;
traceTASK_DELETE( pxTCB );
prvDeleteTCB( pxTCB );
/* Reset the next expected unblock time in case it referred to
the task that has just been deleted. */
prvResetNextTaskUnblockTime();
traceTASK_DELETE( pxTCB );
}
}
taskEXIT_CRITICAL();
@ -2044,7 +2049,9 @@ BaseType_t xReturn;
#if ( configUSE_NEWLIB_REENTRANT == 1 )
{
/* Switch Newlib's _impure_ptr variable to point to the _reent
structure specific to the task that will run first. */
structure specific to the task that will run first.
See the third party link http://www.nadler.com/embedded/newlibAndFreeRTOS.html
for additional information. */
_impure_ptr = &( pxCurrentTCB->xNewLib_reent );
}
#endif /* configUSE_NEWLIB_REENTRANT */
@ -2846,6 +2853,19 @@ BaseType_t xSwitchRequired = pdFALSE;
}
}
#endif /* configUSE_TICK_HOOK */
#if ( configUSE_PREEMPTION == 1 )
{
if( xYieldPending != pdFALSE )
{
xSwitchRequired = pdTRUE;
}
else
{
mtCOVERAGE_TEST_MARKER();
}
}
#endif /* configUSE_PREEMPTION */
}
else
{
@ -2860,19 +2880,6 @@ BaseType_t xSwitchRequired = pdFALSE;
#endif
}
#if ( configUSE_PREEMPTION == 1 )
{
if( xYieldPending != pdFALSE )
{
xSwitchRequired = pdTRUE;
}
else
{
mtCOVERAGE_TEST_MARKER();
}
}
#endif /* configUSE_PREEMPTION */
return xSwitchRequired;
}
/*-----------------------------------------------------------*/
@ -3052,7 +3059,9 @@ void vTaskSwitchContext( void )
#if ( configUSE_NEWLIB_REENTRANT == 1 )
{
/* Switch Newlib's _impure_ptr variable to point to the _reent
structure specific to this task. */
structure specific to this task.
See the third party link http://www.nadler.com/embedded/newlibAndFreeRTOS.html
for additional information. */
_impure_ptr = &( pxCurrentTCB->xNewLib_reent );
}
#endif /* configUSE_NEWLIB_REENTRANT */
@ -3874,7 +3883,9 @@ static void prvCheckTasksWaitingTermination( void )
portCLEAN_UP_TCB( pxTCB );
/* Free up the memory allocated by the scheduler for the task. It is up
to the task to free any memory allocated at the application level. */
to the task to free any memory allocated at the application level.
See the third party link http://www.nadler.com/embedded/newlibAndFreeRTOS.html
for additional information. */
#if ( configUSE_NEWLIB_REENTRANT == 1 )
{
_reclaim_reent( &( pxTCB->xNewLib_reent ) );