* invalidate any other reasons why the executable file might be covered by
* the GNU General Public License.
*
- * Copyright 2008 Bernie Innocenti <bernie@codewiz.org>
- * -->
- *
- * \brief Simple preemptive multitasking scheduler.
+ * \note This file is deprecated and kept only for backward compatibility.
*
- * \version $Id: proc.c 1616 2008-08-10 19:41:26Z bernie $
- * \author Bernie Innocenti <bernie@codewiz.org>
+ * -->
*/
-
-#include "proc_p.h"
-#include "proc.h"
-
-#include <kern/irq.h>
-#include <kern/monitor.h>
-#include <cpu/frame.h> // CPU_IDLE
-#include <cpu/irq.h> // IRQ_DISABLE()...
-#include <drv/timer.h>
-#include <cfg/module.h>
-
-
-int preempt_forbid_cnt;
-
-static Timer preempt_timer;
-
-
-// fwd decl from idle.c
-void idle_init(void);
-
-
-void proc_preempt(void)
-{
- IRQ_DISABLE;
-
- ASSERT(preempt_forbid_cnt == 0);
- LIST_ASSERT_VALID(&ProcReadyList);
- CurrentProcess = (struct Process *)list_remHead(&ProcReadyList);
- ASSERT2(CurrentProcess, "no idle proc?");
-
- IRQ_ENABLE;
-
- TRACEMSG("launching %p:%s", CurrentProcess, proc_currentName());
-}
-
-void proc_preempt_timer(UNUSED_ARG(void *, param))
-{
- if (!preempt_forbid_cnt)
- {
- IRQ_DISABLE;
-
- #if CONFIG_KERN_PRI
- Process *rival = (Process *)LIST_HEAD(&ProcReadyList);
- if (rival && rival->link.pri >= CurrentProcess->link.pri)
- {
- #endif
-
- TRACEMSG("preempting %p:%s", CurrentProcess, proc_currentName());
-#if 0
- SCHED_ENQUEUE(CurrentProcess);
- proc_preempt();
-#endif
- #if CONFIG_KERN_PRI
- }
- #endif
-
- IRQ_ENABLE;
- }
-
- timer_setDelay(&preempt_timer, CONFIG_KERN_QUANTUM);
- timer_add(&preempt_timer);
-}
-
-void proc_schedule(void)
-{
- ATOMIC(LIST_ASSERT_VALID(&ProcReadyList));
- TRACEMSG("%p:%s", CurrentProcess, proc_currentName());
- ATOMIC(LIST_ASSERT_VALID(&ProcReadyList));
-
- /* Sleeping with IRQs disabled or preemption forbidden is illegal */
- ASSERT_IRQ_ENABLED();
- ASSERT(preempt_forbid_cnt == 0);
-
- // Will invoke proc_preempt() in interrupt context
- kill(0, SIGUSR1);
-}
-
-void proc_yield(void)
-{
- TRACEMSG("%p:%s", CurrentProcess, proc_currentName());
-
- IRQ_DISABLE;
- SCHED_ENQUEUE(CurrentProcess);
- IRQ_ENABLE;
-
- proc_schedule();
-}
-
-void proc_entry(void (*user_entry)(void))
-{
- user_entry();
- proc_exit();
-}
-
-void preempt_init(void)
-{
- MOD_CHECK(irq);
- MOD_CHECK(timer);
-
- irq_register(SIGUSR1, proc_preempt);
-
- timer_setSoftint(&preempt_timer, proc_preempt_timer, NULL);
- timer_setDelay(&preempt_timer, CONFIG_KERN_QUANTUM);
- timer_add(&preempt_timer);
-
- idle_init();
-}