/** * @file * * @ingroup RTEMSImplClassicModes * * @brief This header file provides the implementation interfaces of * the @ref RTEMSImplClassicModes support. */ /* COPYRIGHT (c) 1989-2008. * On-Line Applications Research Corporation (OAR). * * The license and distribution terms for this file may be * found in the file LICENSE in this distribution or at * http://www.rtems.org/license/LICENSE. */ #ifndef _RTEMS_RTEMS_MODESIMPL_H #define _RTEMS_RTEMS_MODESIMPL_H #include #include #include #include #include #include #ifdef __cplusplus extern "C" { #endif /** * @defgroup RTEMSImplClassicModes Task Modes * * @ingroup RTEMSImplClassic * * @brief This group contains the implementation to support task modes. * * @{ */ /** * @brief Checks if mode_set says that Asynchronous Signal Processing is disabled. * * This function returns TRUE if mode_set indicates that Asynchronous * Signal Processing is disabled, and FALSE otherwise. */ RTEMS_INLINE_ROUTINE bool _Modes_Is_asr_disabled ( rtems_mode mode_set ) { return (mode_set & RTEMS_ASR_MASK) == RTEMS_NO_ASR; } /** * @brief Checks if mode_set indicates that preemption is enabled. * * This function returns TRUE if mode_set indicates that preemption * is enabled, and FALSE otherwise. */ RTEMS_INLINE_ROUTINE bool _Modes_Is_preempt ( rtems_mode mode_set ) { return (mode_set & RTEMS_PREEMPT_MASK) == RTEMS_PREEMPT; } /** * @brief Checks if mode_set indicates that timeslicing is enabled. * * This function returns TRUE if mode_set indicates that timeslicing * is enabled, and FALSE otherwise. */ RTEMS_INLINE_ROUTINE bool _Modes_Is_timeslice ( rtems_mode mode_set ) { return (mode_set & RTEMS_TIMESLICE_MASK) == RTEMS_TIMESLICE; } /** * @brief Gets the interrupt level portion of the mode_set. * * This function returns the interrupt level portion of the mode_set. */ RTEMS_INLINE_ROUTINE ISR_Level _Modes_Get_interrupt_level ( rtems_mode mode_set ) { return ( mode_set & RTEMS_INTERRUPT_MASK ); } #if defined(RTEMS_SMP) || CPU_ENABLE_ROBUST_THREAD_DISPATCH == TRUE /** * @brief Checks if support for the interrupt level is implemented. * * @param mode_set is the mode set which specifies the interrupt level to * check. * * @return Returns true, if support for the interrupt level is implemented, * otherwise returns false. */ RTEMS_INLINE_ROUTINE bool _Modes_Is_interrupt_level_supported( rtems_mode mode_set ) { return _Modes_Get_interrupt_level( mode_set ) == 0 #if CPU_ENABLE_ROBUST_THREAD_DISPATCH == FALSE || !_SMP_Need_inter_processor_interrupts() #endif ; } #endif #if defined(RTEMS_SMP) /** * @brief Checks if support for the preempt mode is implemented. * * @param mode_set is the mode set which specifies the preempt mode to check. * * @param the_thread is the thread to check. * * @return Returns true, if support for the preempt mode is implemented, * otherwise returns false. */ RTEMS_INLINE_ROUTINE bool _Modes_Is_preempt_mode_supported( rtems_mode mode_set, const Thread_Control *the_thread ) { return _Modes_Is_preempt( mode_set ) || _Scheduler_Is_non_preempt_mode_supported( _Thread_Scheduler_get_home( the_thread ) ); } #endif /** * @brief Applies the timeslice mode to the thread. * * @param mode_set is the mode set which specifies the timeslice mode for the * thread. * * @param[out] the_thread is the thread to apply the timeslice mode. */ RTEMS_INLINE_ROUTINE void _Modes_Apply_timeslice_to_thread( rtems_mode mode_set, Thread_Control *the_thread ) { if ( _Modes_Is_timeslice( mode_set ) ) { the_thread->CPU_budget.operations = &_Thread_CPU_budget_reset_timeslice; the_thread->CPU_budget.available = rtems_configuration_get_ticks_per_timeslice(); } else { the_thread->CPU_budget.operations = NULL; } } #ifdef __cplusplus } #endif /**@}*/ #endif /* end of include file */