* \author Stefano Fedrigo <aleph@develer.com>
*/
-/*#*
- *#* $Log$
- *#* Revision 1.32 2006/09/20 14:19:23 marco
- *#* Restored test.
- *#*
- *#* 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.
- *#*
- *#* Revision 1.23 2004/12/13 12:07:06 bernie
- *#* DISABLE_IRQSAVE/ENABLE_IRQRESTORE: Convert to IRQ_SAVE_DISABLE/IRQ_RESTORE.
- *#*
- *#* Revision 1.22 2004/12/13 11:51:08 bernie
- *#* DISABLE_INTS/ENABLE_INTS: Convert to IRQ_DISABLE/IRQ_ENABLE.
- *#*
- *#* Revision 1.21 2004/11/28 23:20:25 bernie
- *#* Remove obsolete INITLIST macro.
- *#*
- *#* Revision 1.20 2004/11/16 22:37:14 bernie
- *#* Replace IPTR with iptr_t.
- *#*
- *#* Revision 1.19 2004/10/19 11:47:39 bernie
- *#* Kill warnings when !CONFIG_PROC_MONITOR.
- *#*
- *#* Revision 1.18 2004/10/19 08:54:43 bernie
- *#* Initialize forbid_cnt; Formatting/comments fixes.
- *#*
- *#* Revision 1.17 2004/10/19 08:47:13 bernie
- *#* proc_rename(), proc_forbid(), proc_permit(): New functions.
- *#*
- *#* Revision 1.16 2004/10/03 20:39:28 bernie
- *#* Import changes from sc/firmware.
- *#*
- *#* Revision 1.15 2004/09/20 03:29:39 bernie
- *#* C++ fixes.
- *#*
- *#* Revision 1.14 2004/09/14 21:06:44 bernie
- *#* Use debug.h instead of kdebug.h.
- *#*
- *#* Revision 1.13 2004/08/29 21:58:53 bernie
- *#* Include macros.h explicityl.
- *#*
- *#* Revision 1.11 2004/08/24 16:09:08 bernie
- *#* Add missing header.
- *#*
- *#* Revision 1.10 2004/08/24 16:07:01 bernie
- *#* Use kputs()/kputchar() when possible.
- *#*
- *#* Revision 1.9 2004/08/24 14:26:57 bernie
- *#* monitor_debug_stacks(): Conditionally compile on CONFIG_KERN_MONITOR.
- *#*
- *#* Revision 1.8 2004/08/14 19:37:57 rasky
- *#* Merge da SC: macros.h, pool.h, BIT_CHANGE, nome dei processi, etc.
- *#*
- *#* Revision 1.7 2004/08/02 20:20:29 aleph
- *#* Merge from project_ks
- *#*
- *#* Revision 1.6 2004/07/30 14:24:16 rasky
- *#* Task switching con salvataggio perfetto stato di interrupt (SR)
- *#* Kernel monitor per dump informazioni su stack dei processi
- *#*
- *#* Revision 1.5 2004/07/14 14:18:09 rasky
- *#* Merge da SC: Rimosso timer dentro il task, che รจ uno spreco di memoria per troppi task
- *#*
- *#* Revision 1.4 2004/07/13 19:21:28 aleph
- *#* Avoid warning for unused arg when compiled without some CONFIG_KERN_xx options
- *#*
- *#* Revision 1.3 2004/06/06 18:37:57 bernie
- *#* Rename event macros to look like regular functions.
- *#*
- *#* Revision 1.2 2004/06/03 11:27:09 bernie
- *#* Add dual-license information.
- *#*
- *#* Revision 1.1 2004/05/23 17:27:00 bernie
- *#* Import kern/ subdirectory.
- *#*
- *#*/
#include "proc_p.h"
#include "proc.h"
//#include "hw.h"
#include <mware/event.h>
-#include <cfg/cpu.h>
+#include <cpu/irq.h>
+#include <cpu/types.h>
+#include <cpu/attr.h>
#include <cfg/debug.h>
+#include <cfg/module.h>
#include <cfg/arch_config.h> /* ARCH_EMUL */
#include <cfg/macros.h> /* ABS() */
#endif
}
+MOD_DEFINE(proc);
void proc_init(void)
{
/* Make sure the assembly routine is up-to-date with us */
ASSERT(asm_switch_version() == 1);
+ MOD_INIT(proc);
}
/* Ignore stack provided by caller and use the large enough default instead. */
stack_base = (cpustack_t *)LIST_HEAD(&StackFreeList);
REMOVE(LIST_HEAD(&StackFreeList));
- stacksize = CONFIG_KERN_DEFSTACKSIZE;
+ stacksize = CONFIG_PROC_DEFSTACKSIZE;
#elif CONFIG_KERN_HEAP
/* Did the caller provide a stack for us? */
if (!stack_base)
{
/* Did the caller specify the desired stack size? */
if (!stacksize)
- stacksize = CONFIG_KERN_DEFSTACKSIZE + sizeof(Process);
+ stacksize = CONFIG_PROC_DEFSTACKSIZE + sizeof(Process);
/* Allocate stack dinamically */
if (!(stack_base = heap_alloc(stacksize)))
*/
void proc_schedule(void)
{
- /* This function must not have any "auto" variables, otherwise
- * the compiler might put them on the stack of the process
- * being switched out.
- */
- static struct Process *old_process;
- static cpuflags_t flags;
+ struct Process *old_process;
+ cpuflags_t flags;
/* Remember old process to save its context later */
old_process = CurrentProcess;
* are idle-spinning, we must allow interrupts, otherwise no
* process will ever wake up.
*
+ * During idle-spinning, can occur an interrupt, it may be able to
+ * modify \p ProcReadyList. To ensure that compiler reload this
+ * variable every while cycle we call CPU_MEMORY_BARRIER.
+ * The memory barrier ensure that all variables used in this context
+ * are reloaded.
* \todo If there was a way to write sig_wait() so that it does not
* disable interrupts while waiting, there would not be any
* reason to do this.
*/
IRQ_ENABLE;
CPU_IDLE;
+ MEMORY_BARRIER;
IRQ_DISABLE;
}
IRQ_RESTORE(flags);
*/
if (CurrentProcess != old_process)
{
- static cpustack_t *dummy;
+ cpustack_t *dummy;
#if CONFIG_KERN_PREEMPTIVE
/* Reset quantum for this process */
#warning This is wrong
/* Reinsert process stack in free list */
ADDHEAD(&StackFreeList, (Node *)(CurrentProcess->stack
- - (CONFIG_KERN_DEFSTACKSIZE / sizeof(cpustack_t))));
+ - (CONFIG_PROC_DEFSTACKSIZE / sizeof(cpustack_t))));
/*
* NOTE: At this point the first two words of what used
*/
void proc_switch(void)
{
- /* Just like proc_schedule, this function must not have auto variables. */
- static cpuflags_t flags;
+ cpuflags_t flags;
IRQ_SAVE_DISABLE(flags);
SCHED_ENQUEUE(CurrentProcess);
projects / bertos.git / blobdiff