initial import from FreeBSD src commit 4d846d260e2b9a3d4d0a701462568268cbfe7a5b

cnd.c

@@ -0,0 +1,100 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2011 Ed Schouten <ed@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.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <errno.h>
+#include <pthread.h>
+
+#include "threads.h"
+
+int
+cnd_broadcast(cnd_t *cond)
+{
+
+	if (pthread_cond_broadcast(cond) != 0)
+		return (thrd_error);
+	return (thrd_success);
+}
+
+void
+cnd_destroy(cnd_t *cond)
+{
+
+	(void)pthread_cond_destroy(cond);
+}
+
+int
+cnd_init(cnd_t *cond)
+{
+
+	switch (pthread_cond_init(cond, NULL)) {
+	case 0:
+		return (thrd_success);
+	case ENOMEM:
+		return (thrd_nomem);
+	default:
+		return (thrd_error);
+	}
+}
+
+int
+cnd_signal(cnd_t *cond)
+{
+
+	if (pthread_cond_signal(cond) != 0)
+		return (thrd_error);
+	return (thrd_success);
+}
+
+int
+cnd_timedwait(cnd_t *restrict cond, mtx_t *restrict mtx,
+    const struct timespec *restrict ts)
+{
+
+	switch (pthread_cond_timedwait(cond, mtx, ts)) {
+	case 0:
+		return (thrd_success);
+	case ETIMEDOUT:
+		return (thrd_timedout);
+	default:
+		return (thrd_error);
+	}
+}
+
+int
+cnd_wait(cnd_t *cond, mtx_t *mtx)
+{
+
+	if (pthread_cond_wait(cond, mtx) != 0)
+		return (thrd_error);
+	return (thrd_success);
+}