建立工程，成功创建两个虚拟串口

source/OpenAMP/libmetal/test/system/linux/mutex.c

@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2015, Xilinx Inc. and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <pthread.h>
+
+#include "metal-test.h"
+#include <metal/log.h>
+#include <metal/sys.h>
+#include <metal/mutex.h>
+
+static const int mutex_test_count = 1000;
+
+static void *mutex_thread(void *arg)
+{
+	metal_mutex_t *l = arg;
+	int i;
+
+	for (i = 0; i < mutex_test_count; i++) {
+		metal_mutex_acquire(l);
+		usleep(1);
+		metal_mutex_release(l);
+	}
+
+	return NULL;
+}
+
+static int mutex(void)
+{
+	metal_mutex_t lock;
+	const int threads = 10;
+	int rc;
+
+	metal_mutex_init(&lock);
+
+	rc = metal_run(threads, mutex_thread, &lock);
+
+	metal_mutex_deinit(&lock);
+
+	return rc;
+}
+METAL_ADD_TEST(mutex);