添加rtthread相关代码

riscv/rtthread/components/lwp/lwp_futex_table.c

@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2006-2023, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2023-11-01     Shell        Init ver.
+ */
+
+#include "lwp_futex_internal.h"
+
+static struct shared_futex_entry *_futex_hash_head;
+
+rt_err_t futex_global_table_add(struct shared_futex_key *key, rt_futex_t futex)
+{
+    rt_err_t rc = 0;
+    struct shared_futex_entry *entry = &futex->entry;
+    futex->entry.key.mobj = key->mobj;
+    futex->entry.key.offset = key->offset;
+
+    RT_UTHASH_ADD(_futex_hash_head, key, sizeof(struct shared_futex_key), entry);
+    return rc;
+}
+
+rt_err_t futex_global_table_find(struct shared_futex_key *key, rt_futex_t *futex)
+{
+    rt_err_t rc;
+    rt_futex_t found_futex;
+    struct shared_futex_entry *entry;
+
+    RT_UTHASH_FIND(_futex_hash_head, key, sizeof(struct shared_futex_key), entry);
+    if (entry)
+    {
+        rc = RT_EOK;
+        found_futex = rt_container_of(entry, struct rt_futex, entry);
+    }
+    else
+    {
+        rc = -RT_ENOENT;
+        found_futex = RT_NULL;
+    }
+
+    *futex = found_futex;
+    return rc;
+}
+
+rt_err_t futex_global_table_delete(struct shared_futex_key *key)
+{
+    rt_err_t rc;
+    struct shared_futex_entry *entry;
+
+    RT_UTHASH_FIND(_futex_hash_head, key, sizeof(struct shared_futex_key), entry);
+    if (entry)
+    {
+        RT_UTHASH_DELETE(_futex_hash_head, entry);
+        rc = RT_EOK;
+    }
+    else
+    {
+        rc = -RT_ENOENT;
+    }
+
+    return rc;
+}