proc_p.h File Reference

Internal scheduler structures and definitions for processes. More...

#include "cfg/cfg_proc.h"
#include "cfg/cfg_monitor.h"
#include <cfg/compiler.h>
#include <cpu/types.h>
#include <cpu/irq.h>
#include <kern/proc.h>


Defines
#define	SCHED_ENQUEUE(proc)
	Enqueue a process in the ready list.
Flags for Process.flags.
#define	PF_FREESTACK BV(0)
	Free the stack when process dies.
Functions
void	sched_reenqueue (struct Process *proc)
	Changes the priority of an already enqueued process.
void	proc_switch (void)
	Schedule another process without adding the current one to the ready list.
Variables
REGISTER Process *	CurrentProcess
	Track running processes.
REGISTER List	ProcReadyList
	Track ready processes.

Detailed Description

Internal scheduler structures and definitions for processes.

Definition in file proc_p.h.

#define SCHED_ENQUEUE ( proc )

Value:

do { \
        IRQ_ASSERT_DISABLED(); \
        LIST_ASSERT_VALID(&ProcReadyList); \
        SCHED_ENQUEUE_INTERNAL(proc); \
    } while (0)

Enqueue a process in the ready list.

Always use this macro to instert a process in the ready list, as its might vary to implement a different scheduling algorithms.

Note:: Access to the scheduler ready list must be performed with interrupts disabled.

Definition at line 91 of file proc_p.h.

void sched_reenqueue ( struct Process * proc ) [inline]

Changes the priority of an already enqueued process.

Searches and removes the process from the ready list, then uses LIST_ENQUEUE(() to insert again to fix priority.

No action is performed for processes that aren't in the ready list, eg. in semaphore queues.

Note:: Performance could be improved with a different implementation of priority list.

Definition at line 108 of file proc_p.h.

REGISTER Process* CurrentProcess

Track running processes.

Definition at line 78 of file proc.c.

REGISTER List ProcReadyList

Track ready processes.

Access to this list must be performed with interrupts disabled

Definition at line 71 of file proc.c.