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

components/libc/posix/pthreads/sched.c

@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+
+#include <sched.h>
+
+int sched_yield(void)
+{
+    rt_thread_yield();
+
+    return 0;
+}
+RTM_EXPORT(sched_yield);
+
+int sched_get_priority_min(int policy)
+{
+    if (policy != SCHED_FIFO && policy != SCHED_RR)
+        return EINVAL;
+
+    return 0;
+}
+RTM_EXPORT(sched_get_priority_min);
+
+int sched_get_priority_max(int policy)
+{
+    if (policy != SCHED_FIFO && policy != SCHED_RR)
+        return EINVAL;
+
+    return RT_THREAD_PRIORITY_MAX - 1;
+}
+RTM_EXPORT(sched_get_priority_max);
+
+int sched_setscheduler(pid_t pid, int policy)
+{
+    return EOPNOTSUPP;
+}
+RTM_EXPORT(sched_setscheduler);
+
+int sched_rr_get_interval(pid_t pid, struct timespec *tp)
+{
+    if(pid != 0)
+    {
+        return EINVAL;
+    }
+
+    rt_set_errno(-EINVAL);
+
+    /* course model, don't support */
+    // TODO
+    return -1;
+}
+RTM_EXPORT(sched_rr_get_interval);