1 files changed, 80 insertions, 0 deletions
diff --git a/lib/libthr/thread/thr_umtx.c b/lib/libthr/thread/thr_umtx.c
new file mode 100644
index 0000000..ba73de8
--- /dev/null
+++ b/lib/libthr/thread/thr_umtx.c
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2005 David Xu <davidxu@freebsd.org>
+ * 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 unmodified, 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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 "thr_private.h"
+#include "thr_umtx.h"
+
+int
+__thr_umtx_lock(volatile umtx_t *mtx, long id)
+{
+	while (_umtx_op((struct umtx *)mtx, UMTX_OP_LOCK, id, 0, 0))
+		;
+	return (0);
+}
+
+int
+__thr_umtx_timedlock(volatile umtx_t *mtx, long id,
+	const struct timespec *timeout)
+{
+	if (timeout && (timeout->tv_sec < 0 || (timeout->tv_sec == 0 &&
+		timeout->tv_nsec <= 0)))
+		return (ETIMEDOUT);
+	if (_umtx_op((struct umtx *)mtx, UMTX_OP_LOCK, id, 0,
+		(void *)timeout) == 0)
+		return (0);
+	return (errno);
+}
+
+int
+__thr_umtx_unlock(volatile umtx_t *mtx, long id)
+{
+	if (_umtx_op((struct umtx *)mtx, UMTX_OP_UNLOCK, id, 0, 0) == 0)
+		return (0);
+	return (errno);
+}
+
+int
+_thr_umtx_wait(volatile umtx_t *mtx, long id, const struct timespec *timeout)
+{
+	if (timeout && (timeout->tv_sec < 0 || (timeout->tv_sec == 0 &&
+		timeout->tv_nsec <= 0)))
+		return (ETIMEDOUT);
+	if (_umtx_op((struct umtx *)mtx, UMTX_OP_WAIT, id, 0,
+		(void*) timeout) == 0)
+		return (0);
+	return (errno);
+}
+
+int
+_thr_umtx_wake(volatile umtx_t *mtx, int nr_wakeup)
+{
+	if (_umtx_op((struct umtx *)mtx, UMTX_OP_WAKE, nr_wakeup, 0, 0) == 0)
+		return (0);
+	return (errno);
+}