First commit XiUOS

kernel/include/xs_waitqueue.h

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+/*
+* Copyright (c) 2020 AIIT XUOS Lab
+* XiUOS is licensed under Mulan PSL v2.
+* You can use this software according to the terms and conditions of the Mulan PSL v2.
+* You may obtain a copy of Mulan PSL v2 at:
+*        http://license.coscl.org.cn/MulanPSL2
+* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+* See the Mulan PSL v2 for more details.
+*/
+
+/**
+* @file:    xs_waitqueue.h
+* @brief:   function declaration and structure defintion of waitqueue
+* @version: 1.0
+* @author:  AIIT XUOS Lab
+* @date:    2020/4/20
+*
+*/
+
+#ifndef XS_WAITQUEUE_H
+#define XS_WAITQUEUE_H
+
+#include <xs_ktask.h>
+#include <xs_timer.h>
+#include <xs_queue_manager.h>
+
+#define WQ_FLAG_CLEAN    0x00
+#define WQ_FLAG_WAKEUP   0x01
+
+struct WaitQueue
+{
+    DoubleLinklistType block_threads_list;
+};
+typedef struct WaitQueue WaitQueueType;
+
+struct WaitqueueNode;
+typedef int (*wqueue_func_t)(struct WaitqueueNode *wait, void *key);
+
+struct WaitqueueNode
+{
+    KTaskDescriptorType  polling_task;
+    DoubleLinklistType   list;
+    wqueue_func_t        cb;
+    x_ticks_t            deadline_tick;
+    uint32               key;
+};
+typedef struct WaitqueueNode WaitqueueNodeType;
+
+int __WqueueDefaultWake(struct WaitqueueNode *wait, void *key);
+void InitWqueue(WaitQueueType *queue);
+void WqueueAdd(WaitQueueType *queue, struct WaitqueueNode *node);
+void WqueueRemove(struct WaitqueueNode *node);
+int  WqueueWait(WaitQueueType *queue, x_ticks_t tick);
+void WakeupWqueue(WaitQueueType *queue, void *key);
+
+#define DEFINE_WAIT_FUNC(name, function)                \
+    struct WaitqueueNode name = {                      \
+        os_running_task,                              \
+        DOUBLE_LINKLIST_OBJ_INIT(((name).list)),             \
+                                                        \
+        function,                                       \
+        0                                               \
+    }
+
+#define DEFINE_WAIT(name) DEFINE_WAIT_FUNC(name, __WqueueDefaultWake)
+
+typedef struct
+{
+    void (*InitWqueue)(WaitQueueType *queue);
+    void (*WqueueAdd)(WaitQueueType *queue, WaitqueueNodeType *node);
+    void (*WqueueRemove)(WaitqueueNodeType *node);
+    int  (*WqueueWait)(WaitQueueType *queue, x_ticks_t tick);
+    void (*WakeupWqueue)(WaitQueueType *queue, void *key);
+} WaitQueueDoneType;
+
+#endif