import RT-Thread@9217865c without bsp, libcpu and components/net

components/utilities/resource/SConscript

@@ -0,0 +1,8 @@
+from building import *
+
+cwd     = GetCurrentDir()
+src     = Glob('*.c')
+CPPPATH = [cwd]
+group   = DefineGroup('Utilities', src, depend = ['RT_USING_POSIX_PIPE'], CPPPATH = CPPPATH)
+
+Return('group')

components/utilities/resource/resource_id.c

@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2021-08-25     RT-Thread    First version
+ */
+#include <rthw.h>
+#include <rtthread.h>
+#include <resource_id.h>
+
+void resource_id_init(resource_id_t *mgr, int size, void **res)
+{
+    if (mgr)
+    {
+        mgr->size = size;
+        mgr->_res = res;
+        mgr->noused = 0;
+        mgr->_free = RT_NULL;
+    }
+}
+
+int resource_id_get(resource_id_t *mgr)
+{
+    rt_base_t level;
+    void **cur;
+
+    level = rt_hw_interrupt_disable();
+    if (mgr->_free)
+    {
+        cur = mgr->_free;
+        mgr->_free = (void **)*mgr->_free;
+        rt_hw_interrupt_enable(level);
+        return cur - mgr->_res;
+    }
+    else if (mgr->noused < mgr->size)
+    {
+        cur = &mgr->_res[mgr->noused++];
+        rt_hw_interrupt_enable(level);
+        return cur - mgr->_res;
+    }
+    rt_hw_interrupt_enable(level);
+    return -1;
+}
+
+void resource_id_put(resource_id_t *mgr, int no)
+{
+    rt_base_t level;
+    void **cur;
+
+    if (no >= 0 && no < mgr->size)
+    {
+        level = rt_hw_interrupt_disable();
+        cur = &mgr->_res[no];
+        *cur = (void *)mgr->_free;
+        mgr->_free = cur;
+        rt_hw_interrupt_enable(level);
+    }
+}
+

components/utilities/resource/resource_id.h

@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2021-08-25     RT-Thread    First version
+ */
+
+#ifndef  RESOURCE_ID_H__
+#define  RESOURCE_ID_H__
+
+#include <rthw.h>
+#include <rtthread.h>
+
+#define RESOURCE_ID_INIT(size, pool)  {size, pool, 0, RT_NULL}
+
+typedef struct
+{
+    int size;
+    void **_res;
+    int noused;
+    void **_free;
+} resource_id_t;
+
+void resource_id_init(resource_id_t *mgr, int size, void **res);
+int resource_id_get(resource_id_t *mgr);
+void resource_id_put(resource_id_t *mgr, int no);
+
+#endif  /*RESOURCE_ID_H__*/