1 files changed, 80 insertions, 0 deletions
diff --git a/lib/libc_r/uthread/uthread_setprio.c b/lib/libc_r/uthread/uthread_setprio.c
new file mode 100644
index 000000000000..e052ec34c5d2
--- /dev/null
+++ b/lib/libc_r/uthread/uthread_setprio.c
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 1995 John Birrell <jb@cimlogic.com.au>.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by John Birrell.
+ * 4. Neither the name of the author nor the names of any co-contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+#include <errno.h>
+#ifdef _THREAD_SAFE
+#include <pthread.h>
+#include "pthread_private.h"
+
+int
+pthread_setprio(pthread_t pthread, int prio)
+{
+	int             rval = 0;
+	int             status;
+	pthread_t       pthread_p;
+
+	/* Check if the priority is invalid: */
+	if (prio < PTHREAD_MIN_PRIORITY || prio > PTHREAD_MAX_PRIORITY) {
+		/* Return an invalid argument error: */
+		_thread_seterrno(_thread_run, EINVAL);
+		rval = -1;
+	} else {
+		/* Block signals: */
+		_thread_kern_sig_block(&status);
+
+		/* Point to the first thread in the list: */
+		pthread_p = _thread_link_list;
+
+		/* Enter a loop to search for the thread: */
+		while (pthread_p != NULL && pthread_p != pthread) {
+			/* Point to the next thread: */
+			pthread_p = pthread_p->nxt;
+		}
+
+		/* Check if the thread pointer is NULL: */
+		if (pthread == NULL || pthread_p == NULL) {
+			/* Return a 'search' error: */
+			_thread_seterrno(_thread_run, ESRCH);
+			rval = -1;
+		} else {
+			/* Set the thread priority: */
+			pthread->pthread_priority = prio;
+		}
+
+		/* Unblock signals: */
+		_thread_kern_sig_unblock(status);
+	}
+
+	/* Return the error status: */
+	return (rval);
+}
+#endif