X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=bertos%2Fkern%2Fproc_p.h;h=64fabb1290fef6052231bf3e682fb9c8a4830f49;hb=f35b6066ecdeffcc8998dd566b5246bdcf43c548;hp=eea495f611cc5294d2b4deb3c730ad61a01c30c7;hpb=a340f5d946de81802065b1ec7211e6e076e795bb;p=bertos.git

diff --git a/bertos/kern/proc_p.h b/bertos/kern/proc_p.h
index eea495f6..64fabb12 100644
--- a/bertos/kern/proc_p.h
+++ b/bertos/kern/proc_p.h
@@ -41,7 +41,6 @@
 #define KERN_PROC_P_H
 
 #include "cfg/cfg_proc.h"
-#include "cfg/cfg_signal.h"
 #include "cfg/cfg_monitor.h"
 
 #include <cfg/compiler.h>
@@ -49,51 +48,18 @@
 #include <cpu/types.h>        /* for cpu_stack_t */
 #include <cpu/irq.h>          // IRQ_ASSERT_DISABLED()
 
-#include <struct/list.h>
+#include <kern/proc.h>   // struct Process
 
-#if CONFIG_KERN_PREEMPT
-	#include <ucontext.h> // XXX
-#endif
-
-typedef struct Process
-{
-#if CONFIG_KERN_PRI
-	PriNode      link;        /**< Link Process into scheduler lists */
-#else
-	Node         link;        /**< Link Process into scheduler lists */
-#endif
-	cpu_stack_t  *stack;       /**< Per-process SP */
-	iptr_t       user_data;   /**< Custom data passed to the process */
-
-#if CONFIG_KERN_SIGNALS
-	sigmask_t    sig_wait;    /**< Signals the process is waiting for */
-	sigmask_t    sig_recv;    /**< Received signals */
-#endif
-
-#if CONFIG_KERN_HEAP
-	uint16_t     flags;       /**< Flags */
-#endif
-
-#if CONFIG_KERN_HEAP | CONFIG_KERN_MONITOR | (ARCH & ARCH_EMUL)
-	cpu_stack_t  *stack_base;  /**< Base of process stack */
-	size_t       stack_size;  /**< Size of process stack */
-#endif
-
-#if CONFIG_KERN_PREEMPT
-	ucontext_t   context;
-#endif
-
-#if CONFIG_KERN_MONITOR
-	struct ProcMonitor
-	{
-		Node        link;
-		const char *name;
-	} monitor;
+#ifndef asm_switch_context
+/**
+ * CPU dependent context switching routines.
+ *
+ * Saving and restoring the context on the stack is done by a CPU-dependent
+ * support routine which usually needs to be written in assembly.
+ */
+EXTERN_C void asm_switch_context(cpu_stack_t **new_sp, cpu_stack_t **save_sp);
 #endif
 
-} Process;
-
-
 /**
  * \name Flags for Process.flags.
  * \{
@@ -103,19 +69,32 @@ typedef struct Process
 
 
 /** Track running processes. */
-extern REGISTER Process	*CurrentProcess;
+extern REGISTER Process	*current_process;
 
 /**
  * Track ready processes.
  *
  * Access to this list must be performed with interrupts disabled
  */
-extern REGISTER List     ProcReadyList;
+extern REGISTER List     proc_ready_list;
 
 #if CONFIG_KERN_PRI
-	#define SCHED_ENQUEUE_INTERNAL(proc) LIST_ENQUEUE(&ProcReadyList, &(proc)->link)
+	#define prio_next()	(LIST_EMPTY(&proc_ready_list) ? INT_MIN : \
+					((PriNode *)LIST_HEAD(&proc_ready_list))->pri)
+	#define prio_proc(proc)	(proc->link.pri)
+	#define prio_curr()	prio_proc(current_process)
+
+	#define SCHED_ENQUEUE_INTERNAL(proc) \
+			LIST_ENQUEUE(&proc_ready_list, &(proc)->link)
+	#define SCHED_ENQUEUE_HEAD_INTERNAL(proc) \
+			LIST_ENQUEUE_HEAD(&proc_ready_list, &(proc)->link)
 #else
-	#define SCHED_ENQUEUE_INTERNAL(proc) ADDTAIL(&ProcReadyList, &(proc)->link)
+	#define prio_next()	0
+	#define prio_proc(proc)	0
+	#define prio_curr()	0
+
+	#define SCHED_ENQUEUE_INTERNAL(proc) ADDTAIL(&proc_ready_list, &(proc)->link)
+	#define SCHED_ENQUEUE_HEAD_INTERNAL(proc) ADDHEAD(&proc_ready_list, &(proc)->link)
 #endif
 
 /**
@@ -129,10 +108,17 @@ extern REGISTER List     ProcReadyList;
  */
 #define SCHED_ENQUEUE(proc)  do { \
 		IRQ_ASSERT_DISABLED(); \
-		LIST_ASSERT_VALID(&ProcReadyList); \
+		LIST_ASSERT_VALID(&proc_ready_list); \
 		SCHED_ENQUEUE_INTERNAL(proc); \
 	} while (0)
 
+#define SCHED_ENQUEUE_HEAD(proc)  do { \
+		IRQ_ASSERT_DISABLED(); \
+		LIST_ASSERT_VALID(&proc_ready_list); \
+		SCHED_ENQUEUE_HEAD_INTERNAL(proc); \
+	} while (0)
+
+
 #if CONFIG_KERN_PRI
 /**
  * Changes the priority of an already enqueued process.
@@ -147,10 +133,10 @@ extern REGISTER List     ProcReadyList;
 INLINE void sched_reenqueue(struct Process *proc)
 {
 	IRQ_ASSERT_DISABLED();
-	LIST_ASSERT_VALID(&ProcReadyList);
+	LIST_ASSERT_VALID(&proc_ready_list);
 	Node *n;
 	PriNode *pos = NULL;
-	FOREACH_NODE(n, &ProcReadyList)
+	FOREACH_NODE(n, &proc_ready_list)
 	{
 		if (n == &proc->link.link)
 		{
@@ -164,18 +150,22 @@ INLINE void sched_reenqueue(struct Process *proc)
 	if (pos)
 	{
 		REMOVE(&proc->link.link);
-		LIST_ENQUEUE(&ProcReadyList, &proc->link);
+		LIST_ENQUEUE(&proc_ready_list, &proc->link);
 	}
 }
 #endif //CONFIG_KERN_PRI
 
-/// Schedule another process *without* adding the current one to the ready list.
+/* Process trampoline */
+void proc_entry(void);
+
+/* Schedule another process *without* adding the current one to the ready list. */
 void proc_switch(void);
 
-#if CONFIG_KERN_PREEMPT
-void proc_entry(void (*user_entry)(void));
-void preempt_init(void);
-#endif
+/* Immediately schedule a particular process bypassing the scheduler. */
+void proc_wakeup(Process *proc);
+
+/* Initialize a scheduler class. */
+void proc_schedInit(void);
 
 #if CONFIG_KERN_MONITOR
 	/** Initialize the monitor */
@@ -191,4 +181,38 @@ void preempt_init(void);
 	void monitor_rename(Process *proc, const char *name);
 #endif /* CONFIG_KERN_MONITOR */
 
+#if CONFIG_KERN_PREEMPT
+INLINE int preempt_quantum(void)
+{
+	extern int _proc_quantum;
+	return _proc_quantum;
+}
+
+INLINE void proc_decQuantum(void)
+{
+	extern int _proc_quantum;
+	if (_proc_quantum > 0)
+		_proc_quantum--;
+}
+
+INLINE void preempt_reset_quantum(void)
+{
+	extern int _proc_quantum;
+	_proc_quantum = CONFIG_KERN_QUANTUM;
+}
+#else /* !CONFIG_KERN_PREEMPT */
+INLINE int preempt_quantum(void)
+{
+	return 0;
+}
+
+INLINE void proc_decQuantum(void)
+{
+}
+
+INLINE void preempt_reset_quantum(void)
+{
+}
+#endif /* CONFIG_KERN_PREEMPT */
+
 #endif /* KERN_PROC_P_H */