1 files changed, 81 insertions, 0 deletions
diff --git a/lib/libthr/thread/thr_umtx.h b/lib/libthr/thread/thr_umtx.h
new file mode 100644
index 0000000..4ccfb69
--- /dev/null
+++ b/lib/libthr/thread/thr_umtx.h
@@ -0,0 +1,81 @@
+/*-
+ * 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, 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 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _THR_FBSD_UMTX_H_
+#define _THR_FBSD_UMTX_H_
+
+#include <sys/umtx.h>
+
+typedef long umtx_t;
+
+int __thr_umtx_lock(volatile umtx_t *mtx, long id);
+int __thr_umtx_timedlock(volatile umtx_t *mtx, long id,
+	const struct timespec *timeout);
+int __thr_umtx_unlock(volatile umtx_t *mtx, long id);
+
+static inline void
+_thr_umtx_init(volatile umtx_t *mtx)
+{
+    *mtx = 0;
+}
+
+static inline int
+_thr_umtx_trylock(volatile umtx_t *mtx, long id)
+{
+    return umtx_trylock((struct umtx *)mtx, id);
+}
+
+static inline int
+_thr_umtx_lock(volatile umtx_t *mtx, long id)
+{
+    if (atomic_cmpset_acq_ptr(mtx, (void *)UMTX_UNOWNED, (void *)id))
+	return (0);
+    return __thr_umtx_lock(mtx, id);
+}
+
+static inline int
+_thr_umtx_timedlock(volatile umtx_t *mtx, long id,
+	const struct timespec *timeout)
+{
+    if (atomic_cmpset_acq_ptr(mtx, (void *)UMTX_UNOWNED, (void *)id))
+	return (0);
+    return __thr_umtx_timedlock(mtx, id, timeout);
+}
+
+static inline int
+_thr_umtx_unlock(volatile umtx_t *mtx, long id)
+{
+    if (atomic_cmpset_rel_ptr(mtx, (void *)id, (void *)UMTX_UNOWNED))
+	return (0);
+    return __thr_umtx_unlock(mtx, id);
+}
+
+int _thr_umtx_wait(volatile umtx_t *mtx, umtx_t exp,
+	const struct timespec *timeout);
+int _thr_umtx_wake(volatile umtx_t *mtx, int count);
+#endif