First commit XiUOS

kernel/include/xs_sem.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_sem.h
+* @brief:   function declaration and structure defintion of sem
+* @version: 1.0
+* @author:  AIIT XUOS Lab
+* @date:    2020/3/12
+*
+*/
+
+#ifndef XS_SEM_H
+#define XS_SEM_H
+
+#include <xsconfig.h>
+#include <xs_kdbg.h>
+#include <xs_base.h>
+#include <xs_klist.h>
+#include <xs_id.h>
+
+#ifdef KERNEL_SEMAPHORE
+
+struct Semaphore
+{
+    struct IdNode       id;
+    uint16              value;
+
+    DoubleLinklistType  pend_list;
+    DoubleLinklistType  link;
+};
+
+typedef struct {
+    int32 (*SemaphoreCreate)(uint16 val);
+    void  (*SemaphoreDelete)(struct Semaphore *sem);
+    int32 (*SemaphoreObtain)(struct Semaphore *sem, int32 wait_time);
+    int32 (*SemaphoreAbandon)(struct Semaphore *sem);
+    int32 (*SemaphoreSetValue)(struct Semaphore *sem, uint16 val);
+} SemaphoreDoneType;
+
+int32 KSemaphoreCreate(uint16 val);
+void  KSemaphoreDelete(int32 id);
+int32 KSemaphoreObtain(int32 id, int32 wait_time);
+int32 KSemaphoreAbandon(int32 id);
+int32 KSemaphoreSetValue(int32 id, uint16 val);
+
+#endif
+#endif