-/*!
+/**
* \file
* <!--
* Copyright 2001,2004 Develer S.r.l. (http://www.develer.com/)
* Copyright 1999,2000,2001 Bernardo Innocenti <bernie@develer.com>
- * This file is part of DevLib - See devlib/README for information.
+ * This file is part of DevLib - See README.devlib for information.
* -->
*
* \brief Simple realtime multitasking scheduler.
/*#*
*#* $Log$
+ *#* Revision 1.31 2006/07/19 12:56:27 bernie
+ *#* Convert to new Doxygen style.
+ *#*
+ *#* Revision 1.30 2006/03/27 04:49:23 bernie
+ *#* CPU_IDLE(): Fix for new emulator.
+ *#*
+ *#* Revision 1.29 2006/02/24 01:17:05 bernie
+ *#* Update for new emulator.
+ *#*
+ *#* Revision 1.28 2006/02/21 16:06:55 bernie
+ *#* Cleanup/update process scheduling.
+ *#*
+ *#* Revision 1.27 2005/11/04 16:20:02 bernie
+ *#* Fix reference to README.devlib in header.
+ *#*
+ *#* Revision 1.26 2005/04/11 19:10:28 bernie
+ *#* Include top-level headers from cfg/ subdir.
+ *#*
+ *#* Revision 1.25 2005/03/15 00:20:54 bernie
+ *#* proc_schedule(): New sanity check.
+ *#*
*#* Revision 1.24 2005/01/08 09:20:54 bernie
*#* Remove unused variable.
*#*
#include "proc_p.h"
#include "proc.h"
-#include "cpu.h"
-#include "event.h"
-#include "hw.h"
-#include <debug.h>
-#include <arch_config.h> /* ARCH_EMUL */
-#include <macros.h> /* ABS() */
+//#include "hw.h"
+#include <mware/event.h>
+#include <cfg/cpu.h>
+#include <cfg/debug.h>
+#include <cfg/arch_config.h> /* ARCH_EMUL */
+#include <cfg/macros.h> /* ABS() */
#include <string.h> /* memset() */
-/*!
+/**
* CPU dependent context switching routines.
*
* \note This function *MUST* preserve also the status of the interrupts.
extern List StackFreeList;
#endif
-/*! The main process (the one that executes main()). */
+/** The main process (the one that executes main()). */
struct Process MainProcess;
}
-/*!
+/**
* Create a new process, starting at the provided entry point.
*
* \return Process structure of new created process
* if successful, NULL otherwise.
*/
-struct Process *proc_new_with_name(UNUSED(const char*, name), void (*entry)(void), iptr_t data, size_t stacksize, cpustack_t *stack_base)
+struct Process *proc_new_with_name(UNUSED(const char *, name), void (*entry)(void), iptr_t data, size_t stacksize, cpustack_t *stack_base)
{
Process *proc;
size_t i;
#if (ARCH & ARCH_EMUL)
/* Ignore stack provided by caller and use the large enough default instead. */
- stack_base = (cpustack_t *)StackFreeList.head;
- REMOVE((Node *)stack_base);
- stacksize = DEF_STACKSIZE;
+ stack_base = (cpustack_t *)LIST_HEAD(&StackFreeList);
+ REMOVE(LIST_HEAD(&StackFreeList));
+ stacksize = CONFIG_KERN_DEFSTACKSIZE;
#elif CONFIG_KERN_HEAP
/* Did the caller provide a stack for us? */
if (!stack_base)
return proc;
}
-/*! Rename a process */
+/** Rename a process */
void proc_rename(struct Process *proc, const char *name)
{
#if CONFIG_KERN_MONITOR
}
-/*!
+/**
* System scheduler: pass CPU control to the next process in
* the ready queue.
*
/* Remember old process to save its context later */
old_process = CurrentProcess;
+#ifdef IRQ_RUNNING
+ /* Scheduling in interrupts is a nono. */
+ ASSERT(!IRQ_RUNNING());
+#endif
+
/* Poll on the ready queue for the first ready process */
IRQ_SAVE_DISABLE(flags);
- while (!(CurrentProcess = (struct Process *)REMHEAD(&ProcReadyList)))
+ while (!(CurrentProcess = (struct Process *)list_remHead(&ProcReadyList)))
{
/*
* Make sure we physically reenable interrupts here, no matter what
* reason to do this.
*/
IRQ_ENABLE;
- SCHEDULER_IDLE;
+ CPU_IDLE;
IRQ_DISABLE;
}
IRQ_RESTORE(flags);
}
-/*!
+/**
* Terminate the current process
*/
void proc_exit(void)
{
+#if CONFIG_KERN_MONITOR
+ monitor_remove(CurrentProcess);
+#endif
+
#if CONFIG_KERN_HEAP
- /* The following code is BROKEN.
+ /*
+ * The following code is BROKEN.
* We are freeing our own stack before entering proc_schedule()
* BAJO: A correct fix would be to rearrange the scheduler with
* an additional parameter which frees the old stack/process
#endif
#if (ARCH & ARCH_EMUL)
-#error This is wrong
+#warning This is wrong
/* Reinsert process stack in free list */
ADDHEAD(&StackFreeList, (Node *)(CurrentProcess->stack
- - (DEF_STACKSIZE / sizeof(cpustack_t))));
+ - (CONFIG_KERN_DEFSTACKSIZE / sizeof(cpustack_t))));
- /* NOTE: At this point the first two words of what used
+ /*
+ * NOTE: At this point the first two words of what used
* to be our stack contain a list node. From now on, we
* rely on the compiler not reading/writing the stack.
*/
#endif /* ARCH_EMUL */
-#if CONFIG_KERN_MONITOR
- monitor_remove(CurrentProcess);
-#endif
-
CurrentProcess = NULL;
proc_schedule();
/* not reached */
}
-/*!
+/**
* Co-operative context switch
*/
void proc_switch(void)
}
-/*!
+/**
* Get the pointer to the current process
*/
struct Process *proc_current(void)
return CurrentProcess;
}
-/*!
+/**
* Get the pointer to the user data of the current process
*/
iptr_t proc_current_user_data(void)
#if CONFIG_KERN_PREEMPTIVE
-/*!
+/**
* Disable preemptive task switching.
*
* The scheduler maintains a per-process nesting counter. Task switching is
++CurrentProcess->forbid_cnt;
}
-/*!
+/**
* Re-enable preemptive task switching.
*
* \sa proc_forbid()
#include <drv/timer.h>
-/*!
+/**
* Proc scheduling test subthread 1
*/
static void NORETURN proc_test_thread1(void)
}
}
-/*!
+/**
* Proc scheduling test subthread 2
*/
static void NORETURN proc_test_thread2(void)
static cpustack_t proc_test_stack1[CONFIG_KERN_DEFSTACKSIZE/sizeof(cpustack_t)];
static cpustack_t proc_test_stack2[CONFIG_KERN_DEFSTACKSIZE/sizeof(cpustack_t)];
-/*!
+/**
* Proc scheduling test
*/
void NORETURN proc_test(void)
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