Global

group Global_switchScheduler

switchScheduler globals

lorem

Macros

group Macros_switchScheduler_h

Defines

SCHEDULER_PERFORMANCE_SCHEDULING

Variables

group Variables_switchScheduler_h

API’s

group Apis_switchScheduler_h

Getters

group Getters_switchScheduler_h

Setters

group Setters_switchScheduler_h

General

group General_switchScheduler_h

Defines

switchScheduler_classicScheduling(schedulerCfg, schedulableCfg, stackPointerRetVal, timerTicks, startTick, currentTick)

Classic scheduling function. DEMO.

Parameters

  • CosmOS_SchedulerConfigurationType – * schedulerCfg

  • CosmOS_SchedulableConfigurationType – * schedulableCfg

  • StackPointerType – [in] * stackPointerRetVal

  • BitWidthType – [in] * timerTicks

  • BitWidthType – [in] startTick

  • BitWidthType – [in] currentTick

Returns

none

switchScheduler_performanceScheduling(schedulerCfg, schedulableCfg, stackPointerRetVal, timerTicks)
switchScheduler_schedulable_setStackPointer(priorSchedulableCfg, stackPointer)
switchScheduler_updateAlarms(coreCfg, priorTickStep)

Functions

void scheduler_performanceScheduling(CosmOS_SchedulerConfigurationType *schedulerVar, CosmOS_SchedulableConfigurationType **schedulableCfg, StackPointerType *stackPointerRetVal, BitWidthType *timerTicks)

Performance scheduling function. This function cannot be called from the unprivileged context directly. DEMO.

Performance scheduling function. DEMO.

The implementation contains obtaining of the thread list elements number by calling scheduler_getSchedulerThreadListElementsNum function. Then the for loop is implemented that iterates over all possible thread identifiers and uses them for obtaining thread variable by calling function scheduler_getSchedulerThreadListThreadVar. From the thread variable is the schedulable variable extracted by calling thread_getThreadSchedulable function and the schedulable state is obtained by calling function schedulable_getState. Then the if condition is implemented that checks if the schedulable state is equal to the SCHEDULABLE_STATE_ENUM__READY and if yes the for loop breaks, otherwise continues till it finds thread in ready state for execution. The thread list is priority sorted and has to contain as the lowest priority thread the idle thread. The found schedulable variable from the for loop is then used in the function schedulable_getStackPointer to get its stack pointer and the preempt tick is obtained by calling function scheduler_getSchedulerPreemptTick and passed to the timer ticks.

Parameters

  • scheduler – [in] configuration pointerVar

  • schedulableCfg – [in] pointer

  • stackPointerRetVal – [in] stack pointer of the current schedulable

  • timerTicks – [in] timer ticks to set, usually preempt period

  • CosmOS_SchedulerConfigurationType – * schedulerCfg

  • CosmOS_SchedulableConfigurationType – * schedulableCfg

  • StackPointerType – [in] * stackPointerRetVal

  • BitWidthType – [in] * timerTicks

Returns

none

Returns

none