libstdthreads: Import from FreeBSD

1 files changed, 128 insertions, 0 deletions

diff --git a/cpukit/libstdthreads/thrd.c b/cpukit/libstdthreads/thrd.c
new file mode 100644
index 0000000000..562e806226
--- /dev/null
+++ b/cpukit/libstdthreads/thrd.c
@@ -0,0 +1,128 @@
+/*-
+ * 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.
+ *
+ * $FreeBSD r279318 2015-02-26T09:42:03Z$
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <pthread.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#include "threads.h"
+
+struct thrd_param {
+	thrd_start_t	 func;
+	void		*arg;
+};
+
+static void *
+thrd_entry(void *arg)
+{
+	struct thrd_param tp;
+
+	tp = *(struct thrd_param *)arg;
+	free(arg);
+	return ((void *)(intptr_t)tp.func(tp.arg));
+}
+
+int
+thrd_create(thrd_t *thr, thrd_start_t func, void *arg)
+{
+	struct thrd_param *tp;
+
+	/*
+	 * Work around return type inconsistency.  Wrap execution using
+	 * a function conforming to pthread_create()'s start_routine.
+	 */
+	tp = malloc(sizeof(*tp));
+	if (tp == NULL)
+		return (thrd_nomem);
+	tp->func = func;
+	tp->arg = arg;
+	if (pthread_create(thr, NULL, thrd_entry, tp) != 0) {
+		free(tp);
+		return (thrd_error);
+	}
+	return (thrd_success);
+}
+
+thrd_t
+thrd_current(void)
+{
+
+	return (pthread_self());
+}
+
+int
+thrd_detach(thrd_t thr)
+{
+
+	if (pthread_detach(thr) != 0)
+		return (thrd_error);
+	return (thrd_success);
+}
+
+int
+thrd_equal(thrd_t thr0, thrd_t thr1)
+{
+
+	return (pthread_equal(thr0, thr1));
+}
+
+_Noreturn void
+thrd_exit(int res)
+{
+
+	pthread_exit((void *)(intptr_t)res);
+}
+
+int
+thrd_join(thrd_t thr, int *res)
+{
+	void *value_ptr;
+
+	if (pthread_join(thr, &value_ptr) != 0)
+		return (thrd_error);
+	if (res != NULL)
+		*res = (intptr_t)value_ptr;
+	return (thrd_success);
+}
+
+int
+thrd_sleep(const struct timespec *duration, struct timespec *remaining)
+{
+
+	return (nanosleep(duration, remaining));
+}
+
+void
+thrd_yield(void)
+{
+
+	pthread_yield();
+}