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diff --git a/lib/libthr/thread/thr_info.c b/lib/libthr/thread/thr_info.c
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+/*
+ * Copyright (c) 1995-1998 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. 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 AUTHOR 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.
+ *
+ * $FreeBSD$
+ */
+
+#include "namespace.h"
+#include <stdlib.h>
+#include <string.h>
+#include <pthread.h>
+#include <pthread_np.h>
+#include "un-namespace.h"
+
+#include "thr_private.h"
+
+__weak_reference(_pthread_set_name_np, pthread_set_name_np);
+
+/* Set the thread name for debug. */
+void
+_pthread_set_name_np(pthread_t thread, const char *name)
+{
+ struct pthread *curthread = _get_curthread();
+ int ret = 0;
+
+ if (curthread == thread) {
+ if (thr_set_name(thread->tid, name))
+ ret = errno;
+ } else {
+ if (_thr_ref_add(curthread, thread, 0) == 0) {
+ THR_THREAD_LOCK(curthread, thread);
+ if (thread->state != PS_DEAD) {
+ if (thr_set_name(thread->tid, name))
+ ret = errno;
+ }
+ THR_THREAD_UNLOCK(curthread, thread);
+ _thr_ref_delete(curthread, thread);
+ } else {
+ ret = ESRCH;
+ }
+ }
+#if 0
+ /* XXX should return error code. */
+ return (ret);
+#endif
+}
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