patch-2.2.14 linux/include/asm-s390/queue.h

• Lines: 65
• Date: Tue Jan 4 10:12:24 2000
• Orig file: v2.2.13/linux/include/asm-s390/queue.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.2.13/linux/include/asm-s390/queue.h linux/include/asm-s390/queue.h
@@ -0,0 +1,64 @@
+/*
+ *  include/asm-s390/queue.h
+ *
+ *  S390 version
+ *    Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ *    Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
+ *
+ *  A little set of queue utilies.
+ */
+#include <linux/stddef.h>
+
+typedef struct queue
+{
+	struct queue *next;	
+} queue;
+
+typedef struct
+{
+	queue *head;
+	queue *tail;
+} qheader;
+
+static __inline__ void init_queue(qheader *qhead)
+{
+	memset(qhead,0,sizeof(*qhead));
+}
+
+static __inline__ void enqueue_tail(qheader *qhead,queue *member)
+{
+	queue *tail=qhead->tail;
+	member->next=NULL;
+	
+	if(member)
+	{
+		if(tail)
+			tail->next=member;
+		else
+			
+			qhead->head=member;
+		qhead->tail=member;
+		member->next=NULL;
+	}
+} 
+
+static __inline__ queue *dequeue_head(qheader *qhead)
+{
+	queue *head=qhead->head,*next_head;
+
+	if(head)
+	{
+		next_head=head->next;
+		qhead->head=next_head;
+	        if(!next_head)
+			qhead->tail=NULL;
+	}
+	return(head);
+}
+
+
+
+
+
+
+