init

2026-08-21 18:28:33 +08:00
commit 9e478f1591
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+/*
+    Copyright 2025 Quectel Wireless Solutions Co.,Ltd
+
+    Quectel hereby grants customers of Quectel a license to use, modify,
+    distribute and publish the Software in binary form provided that
+    customers shall have no right to reverse engineer, reverse assemble,
+    decompile or reduce to source code form any portion of the Software. 
+    Under no circumstances may customers modify, demonstrate, use, deliver 
+    or disclose any portion of the Software in source code form.
+*/
+
+#ifndef __QUECTEL_LIST_H__
+#define __QUECTEL_LIST_H__
+struct qlistnode
+{
+    struct qlistnode *next;
+    struct qlistnode *prev;
+};
+
+#define qnode_to_item(node, container, member) \
+    (container *) (((char*) (node)) - offsetof(container, member))
+
+#define qlist_for_each(node, list) \
+    for (node = (list)->next; node != (list); node = node->next)
+
+#define qlist_empty(list) ((list) == (list)->next)
+#define qlist_head(list) ((list)->next)
+#define qlist_tail(list) ((list)->prev)
+
+static void qlist_init(struct qlistnode *node)
+{
+    node->next = node;
+    node->prev = node;
+}
+
+static void qlist_add_tail(struct qlistnode *head, struct qlistnode *item)
+{
+    item->next = head;
+    item->prev = head->prev;
+    head->prev->next = item;
+    head->prev = item;
+}
+
+static void qlist_remove(struct qlistnode *item)
+{
+    item->next->prev = item->prev;
+    item->prev->next = item->next;
+}
+#endif