NuttX RTOS

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 118 insertions, 0 deletions

diff --git a/nuttx/include/queue.h b/nuttx/include/queue.h
new file mode 100644
index 000000000..17f4ddec0
--- /dev/null
+++ b/nuttx/include/queue.h
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+/************************************************************************
+ * queue.h
+ *
+ *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name Gregory Nutt nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************/
+
+#ifndef __QUEUE_H
+#define __QUEUE_H
+
+/************************************************************************
+ * Included Files
+ ************************************************************************/
+
+#include <sys/types.h>
+
+/************************************************************************
+ * Definitions
+ ************************************************************************/
+
+#define sq_init(q) do { (q)->head = NULL; (q)->tail = NULL; } while (0)
+#define dq_init(q) do { (q)->head = NULL; (q)->tail = NULL; } while (0)
+#define sq_next(p) ((p)->flink)
+#define dq_next(p) ((p)->flink)
+#define dq_prev(p) ((p)->prev)
+
+/************************************************************************
+ * Global Type Declarations
+ ************************************************************************/
+
+struct sq_entry_s
+{
+  struct sq_entry_s *flink;
+};
+typedef struct sq_entry_s sq_entry_t;
+
+struct dq_entry_s
+{
+  struct dq_entry_s *flink, *blink;
+};
+typedef struct dq_entry_s dq_entry_t;
+
+struct sq_queue_s
+{
+  sq_entry_t *head, *tail;
+};
+typedef struct sq_queue_s  sq_queue_t;
+
+struct dq_queue_s
+{
+  dq_entry_t *head, *tail;
+};
+typedef struct dq_queue_s dq_queue_t;
+
+/************************************************************************
+ * Global Function Prototypes
+ ************************************************************************/
+
+#ifdef __cplusplus
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+EXTERN void        sq_addfirst(sq_entry_t *node, sq_queue_t *queue);
+EXTERN void        dq_addfirst(dq_entry_t *node, dq_queue_t *queue);
+EXTERN void        sq_addlast(sq_entry_t *node, sq_queue_t *queue);
+EXTERN void        dq_addlast(dq_entry_t *node, dq_queue_t *queue);
+EXTERN void        sq_addafter(sq_entry_t *prev, sq_entry_t *node,
+                               sq_queue_t *queue);
+EXTERN void        dq_addafter(dq_entry_t *prev, dq_entry_t *node,
+                               dq_queue_t *queue);
+EXTERN void        dq_addbefore(dq_entry_t *next, dq_entry_t *node,
+                                dq_queue_t *queue);
+EXTERN sq_entry_t *sq_remafter(sq_entry_t *node, sq_queue_t *queue);
+EXTERN void        sq_rem(sq_entry_t *node, sq_queue_t *queue);
+EXTERN void        dq_rem(dq_entry_t *node, dq_queue_t *queue);
+EXTERN sq_entry_t *sq_remlast(sq_queue_t *queue);
+EXTERN dq_entry_t *dq_remlast(dq_queue_t *queue);
+EXTERN sq_entry_t *sq_remfirst(sq_queue_t *queue);
+EXTERN dq_entry_t *dq_remfirst(dq_queue_t *queue);
+
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __QUEUE_H_ */
+