- Add libthr but don't hook it up to the regular build yet. This is an

   adaptation of libc_r for the thr system call interface.  This is beta
   quality code.

1 files changed, 82 insertions, 0 deletions

diff --git a/lib/libthr/thread/thr_detach.c b/lib/libthr/thread/thr_detach.c
new file mode 100644
index 0000000..ca1b473
--- /dev/null
+++ b/lib/libthr/thread/thr_detach.c
@@ -0,0 +1,82 @@
+/*
+ * 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 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 <errno.h>
+#include <pthread.h>
+#include "thr_private.h"
+
+__weak_reference(_pthread_detach, pthread_detach);
+
+int
+_pthread_detach(pthread_t pthread)
+{
+	pthread_t curthread;
+
+	if (pthread == NULL || pthread->magic != PTHREAD_MAGIC)
+		return (EINVAL);
+
+	if (pthread->attr.flags & PTHREAD_DETACHED)
+		return (EINVAL);
+
+	curthread = _get_curthread();
+
+	pthread->attr.flags |= PTHREAD_DETACHED;
+
+	/*
+	 * Defer signals to protect the scheduling queues from
+	 * access by the signal handler:
+	 */
+	GIANT_LOCK(curthread);
+
+	/* Check if there is a joiner: */
+	if (pthread->joiner != NULL) {
+		struct pthread	*joiner = pthread->joiner;
+
+		/* Make the thread runnable: */
+		PTHREAD_NEW_STATE(joiner, PS_RUNNING);
+
+		/* Set the return value for the woken thread: */
+		joiner->join_status.error = ESRCH;
+		joiner->join_status.ret = NULL;
+		joiner->join_status.thread = NULL;
+
+		/*
+		 * Disconnect the joiner from the thread being detached:
+		 */
+		pthread->joiner = NULL;
+	}
+
+	GIANT_UNLOCK(curthread);
+
+	return (0);
+}