chschd.h File Reference

Scheduler macros and structures. More...

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Data Structures
struct	ReadyList
	Ready list header. More...
Defines
#define	RDY_OK   0
	Default thread wakeup low level message.
#define	RDY_TIMEOUT   -1
	Low level message sent to a thread awakened by a timeout.
#define	RDY_RESET   -2
	Low level message sent to a thread awakened by a reset operation.
#define	NOPRIO   0
	Ready list header priority.
#define	IDLEPRIO   1
	Idle thread priority.
#define	LOWPRIO   2
	Lowest user priority.
#define	NORMALPRIO   64
	Normal user priority.
#define	HIGHPRIO   127
	Highest user priority.
#define	ABSPRIO   255
	Greatest possible priority.
#define	TIME_IMMEDIATE   ((systime_t)-1)
	Zero time specification for some syscalls with a timeout specification.
#define	TIME_INFINITE   ((systime_t)0)
	Infinite time specification for all the syscalls with a timeout specification.
#define	firstprio(rlp)   ((rlp)->p_next->p_prio)
	Returns the priority of the first thread on the given ready list.
#define	currp   rlist.r_current
	Current thread pointer access macro.
#define	setcurrp(tp)   (currp = (tp))
	Current thread pointer change macro.
#define	chSchIsRescRequiredI()   (firstprio(&rlist.r_queue) > currp->p_prio)
	Determines if the current thread must reschedule.
#define	chSchCanYieldS()   (firstprio(&rlist.r_queue) >= currp->p_prio)
	Determines if yielding is possible.
#define	chSchDoYieldS()
	Yields the time slot.
Functions
void	scheduler_init (void)
	Scheduler initialization.
Thread *	chSchReadyI (Thread *tp)
	Inserts a thread in the Ready List.
void	chSchGoSleepS (tstate_t newstate)
	Puts the current thread to sleep into the specified state.
msg_t	chSchGoSleepTimeoutS (tstate_t newstate, systime_t time)
	Puts the current thread to sleep into the specified state with timeout specification.
void	chSchWakeupS (Thread *ntp, msg_t msg)
	Wakes up a thread.
void	chSchDoRescheduleI (void)
	Switches to the first thread on the runnable queue.
void	chSchRescheduleS (void)
	Performs a reschedule if a higher priority thread is runnable.
bool_t	chSchIsRescRequiredExI (void)
	Evaluates if a reschedule is required.

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Detailed Description

Scheduler macros and structures.

Definition in file chschd.h.