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Introduced configUSE_PORT_OPTIMISED_TASK_SELECTION, and updated the MSVC simulator port as the first implementation.

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Richard Barry 2012-09-23 14:35:12 +00:00
parent 8ef7f03536
commit 670d172cfc
4 changed files with 112 additions and 17 deletions
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24
FreeRTOS/Source/portable/MSVC-MingW/portmacro.h
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@ -108,6 +108,30 @@ void vPortExitCritical( void );
#define portENTER_CRITICAL() vPortEnterCritical()
#define portEXIT_CRITICAL() vPortExitCritical()
#ifndef __GNUC__
#if configUSE_PORT_OPTIMISED_TASK_SELECTION == 1
/* Check the configuration. */
#if( configMAX_PRIORITIES >= 32 )
#error configUSE_PORT_OPTIMISED_TASK_SELECTION can only be set to 1 when configMAX_PRIORITIES is less than or equal to 32. It is very rare that a system requires more than 10 to 15 difference priorities as tasks that share a priority will time slice.
#endif
/* Store/clear the ready priorities in a bit map. */
#define portRECORD_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) |= ( 1UL << ( uxPriority ) )
#define portRESET_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) &= ~( 1UL << ( uxPriority ) )
/*-----------------------------------------------------------*/
/* BitScanReverse returns the bit position of the most significant '1'
in the word. */
#define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) _BitScanReverse( ( DWORD * ) &( uxTopPriority ), ( uxReadyPriorities ) )
#endif /* taskRECORD_READY_PRIORITY */
#endif /* __GNUC__ */
/* Task function macros as described on the FreeRTOS.org WEB site. */
#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )
#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )