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Update to V4.0.4. Add in STR912 port and demo.

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This commit is contained in:
Richard Barry 2006-06-22 17:18:31 +00:00
parent 05023971cb
commit 3dcbed5763
445 changed files with 30007 additions and 331 deletions
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38
Source/tasks.c
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@ -1,5 +1,5 @@
/*
FreeRTOS.org V4.0.3 - Copyright (C) 2003-2006 Richard Barry.
FreeRTOS.org V4.0.4 - Copyright (C) 2003-2006 Richard Barry.
This file is part of the FreeRTOS.org distribution.
@ -159,6 +159,11 @@ Changes from V4.0.1
+ The tick hook function is now called only within a tick isr. Previously
it was also called when the tick function was called during the scheduler
unlocking process.
Changes from V4.0.4
+ Extra checks have been placed in vTaskPrioritySet() to avoid unnecessary
yields.
*/
#include <stdio.h>
@ -788,7 +793,7 @@ static unsigned portBASE_TYPE uxTaskNumber = 0; /*lint !e956 Static is deliberat
void vTaskPrioritySet( xTaskHandle pxTask, unsigned portBASE_TYPE uxNewPriority )
{
tskTCB *pxTCB;
unsigned portBASE_TYPE uxCurrentPriority;
unsigned portBASE_TYPE uxCurrentPriority, xYieldRequired = pdFALSE;
/* Ensure the new priority is valid. */
if( uxNewPriority >= configMAX_PRIORITIES )
@ -805,6 +810,26 @@ static unsigned portBASE_TYPE uxTaskNumber = 0; /*lint !e956 Static is deliberat
if( uxCurrentPriority != uxNewPriority )
{
/* The priority change may have readied a task of higher
priority than the calling task. */
if( uxNewPriority > pxCurrentTCB->uxPriority )
{
if( pxTask != NULL )
{
/* The priority of another task is being raised. If we
were raising the priority of the currently running task
there would be no need to switch as it must have already
been the highest priority task. */
xYieldRequired = pdTRUE;
}
}
else if( pxTask == NULL )
{
/* Setting our own priority down means there may now be another
task of higher priority that is ready to execute. */
xYieldRequired = pdTRUE;
}
pxTCB->uxPriority = uxNewPriority;
/* If the task is in the blocked or suspended list we need do
@ -827,13 +852,14 @@ static unsigned portBASE_TYPE uxTaskNumber = 0; /*lint !e956 Static is deliberat
vListInsertEnd( ( xList * ) &( xPendingReadyList ), &( pxTCB->xEventListItem ) );
}
}
if( xYieldRequired == pdTRUE )
{
taskYIELD();
}
}
}
taskEXIT_CRITICAL();
/* The priority change may have readied a task of higher
priority than the calling task. */
taskYIELD();
}
#endif