From: bernie <bernie@38d2e660-2303-0410-9eaa-f027e97ec537>
Date: Mon, 25 Aug 2008 19:18:20 +0000 (+0000)
Subject: proc_switch(): rename from proc_schedule(). Split out the real cooperative scheduler.
X-Git-Tag: 2.0.0~234
X-Git-Url: https://codewiz.org/gitweb?a=commitdiff_plain;h=b0033f388edf3db04aec0901420a06bbc0f7ada7;p=bertos.git

proc_switch(): rename from proc_schedule(). Split out the real cooperative scheduler.

git-svn-id: https://src.develer.com/svnoss/bertos/trunk@1700 38d2e660-2303-0410-9eaa-f027e97ec537
---

diff --git a/bertos/kern/coop.c b/bertos/kern/coop.c
index 4b2e6b88..dd3aee21 100644
--- a/bertos/kern/coop.c
+++ b/bertos/kern/coop.c
@@ -63,18 +63,14 @@ EXTERN_C void asm_switch_context(cpustack_t **new_sp, cpustack_t **save_sp);
  * System scheduler: pass CPU control to the next process in
  * the ready queue.
  */
-void proc_schedule(void)
+static void proc_schedule(void)
 {
-	struct Process *old_process;
 	cpuflags_t flags;
 
 	ATOMIC(LIST_ASSERT_VALID(&ProcReadyList));
 	ASSERT_USER_CONTEXT();
 	ASSERT_IRQ_ENABLED();
 
-	/* Remember old process to save its context later */
-	old_process = CurrentProcess;
-
 	/* Poll on the ready queue for the first ready process */
 	IRQ_SAVE_DISABLE(flags);
 	while (!(CurrentProcess = (struct Process *)list_remHead(&ProcReadyList)))
@@ -100,6 +96,14 @@ void proc_schedule(void)
 		IRQ_DISABLE;
 	}
 	IRQ_RESTORE(flags);
+}
+
+void proc_switch(void)
+{
+	/* Remember old process to save its context later */
+	const Process *old_process = CurrentProcess;
+
+	proc_schedule();
 
 	/*
 	 * Optimization: don't switch contexts when the active
@@ -111,8 +115,8 @@ void proc_schedule(void)
 
 		#if CONFIG_KERN_MONITOR
 			LOG_INFO("Switch from %p(%s) to %p(%s)\n",
-				old_process,    old_process ? old_process->monitor.name : "NONE",
-				CurrentProcess, CurrentProcess->monitor.name);
+				old_process,    proc_name(old_process),
+				CurrentProcess, proc_currentName());
 		#endif
 
 		/* Save context of old process and switch to new process. If there is no
@@ -135,6 +139,5 @@ void proc_schedule(void)
 void proc_yield(void)
 {
 	ATOMIC(SCHED_ENQUEUE(CurrentProcess));
-
-	proc_schedule();
+	proc_switch();
 }
diff --git a/bertos/kern/preempt.c b/bertos/kern/preempt.c
index af9555d0..e24da145 100644
--- a/bertos/kern/preempt.c
+++ b/bertos/kern/preempt.c
@@ -73,7 +73,7 @@ static Timer preempt_timer;
 void idle_init(void);
 
 
-void proc_preempt(void)
+void proc_schedule(void)
 {
 	IRQ_DISABLE;
 
@@ -87,7 +87,7 @@ void proc_preempt(void)
 	TRACEMSG("launching %p:%s", CurrentProcess, proc_currentName());
 }
 
-void proc_preempt_timer(UNUSED_ARG(void *, param))
+void proc_preempt(UNUSED_ARG(void *, param)
 {
 	if (!preempt_forbid_cnt)
 	{
@@ -104,7 +104,7 @@ void proc_preempt_timer(UNUSED_ARG(void *, param))
 // FIXME: this still break havocs, probably because of some reentrancy issue
 #if 0
 		SCHED_ENQUEUE(CurrentProcess);
-		proc_preempt();
+		proc_schedule();
 #endif
 		#if CONFIG_KERN_PRI
 			}
@@ -117,7 +117,7 @@ void proc_preempt_timer(UNUSED_ARG(void *, param))
 	timer_add(&preempt_timer);
 }
 
-void proc_schedule(void)
+void proc_switch(void)
 {
 	ATOMIC(LIST_ASSERT_VALID(&ProcReadyList));
 	TRACEMSG("%p:%s", CurrentProcess, proc_currentName());
@@ -139,7 +139,7 @@ void proc_yield(void)
 	SCHED_ENQUEUE(CurrentProcess);
 	IRQ_ENABLE;
 
-	proc_schedule();
+	proc_switch();
 }
 
 void proc_entry(void (*user_entry)(void))
diff --git a/bertos/kern/proc.c b/bertos/kern/proc.c
index 577f0db4..9137dfba 100644
--- a/bertos/kern/proc.c
+++ b/bertos/kern/proc.c
@@ -30,8 +30,7 @@
  * Copyright 1999, 2000, 2001, 2008 Bernie Innocenti <bernie@codewiz.org>
  * -->
  *
- * \brief Simple realtime multitasking scheduler.
- *        Context switching is only done cooperatively.
+ * \brief Simple cooperative multitasking scheduler.
  *
  * \version $Id$
  * \author Bernie Innocenti <bernie@codewiz.org>
@@ -354,7 +353,7 @@ void proc_exit(void)
 #endif /* ARCH_EMUL */
 
 	CurrentProcess = NULL;
-	proc_schedule();
+	proc_switch();
 	/* not reached */
 }