add test atomic

testing/atomic/Kconfig

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+#
+# For a description of the syntax of this configuration file,
+# see the file kconfig-language.txt in the NuttX tools repository.
+#
+
+config TESTING_ATOMIC
+	tristate "\"Test atomic\" testing"
+	default n
+	---help---
+		Enable the \"Test atomic!\" testing.
+
+if TESTING_ATOMIC
+
+config TESTING_ATOMIC_PROGNAME
+	string "Program name"
+	default "atomic"
+	---help---
+		This is the name of the program that will be used when the NSH ELF
+		program is atomic.
+
+config TESTING_ATOMIC_PRIORITY
+	int "Atomic task priority"
+	default 100
+
+config TESTING_ATOMIC_STACKSIZE
+	int "Atomic stack size"
+	default DEFAULT_TASK_STACKSIZE
+
+endif

testing/atomic/Make.defs

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+############################################################################
+# apps/testing/atomic/Make.defs
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+ifneq ($(CONFIG_TESTING_ATOMIC),)
+CONFIGURED_APPS += $(APPDIR)/testing/atomic
+endif

testing/atomic/Makefile

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+############################################################################
+# apps/testing/atomic/Make.defs
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+include $(APPDIR)/Make.defs
+
+# Atomic ! built-in application info
+
+PROGNAME  = $(CONFIG_TESTING_ATOMIC_PROGNAME)
+PRIORITY  = $(CONFIG_TESTING_ATOMIC_PRIORITY)
+STACKSIZE = $(CONFIG_TESTING_ATOMIC_STACKSIZE)
+MODULE    = $(CONFIG_TESTING_ATOMIC)
+
+# Atomic! Example
+
+MAINSRC = atomic_main.c
+
+include $(APPDIR)/Application.mk

testing/atomic/atomic_main.c

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+/****************************************************************************
+ * apps/testing/atomic/atomic_main.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <stdio.h>
+#include <stdatomic.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#define ATOMIC_CHECK(value, expected)                       \
+if ((value) != (expected))                                  \
+{                                                           \
+    printf("atomic test fail,line:%d\n",__LINE__);          \
+}
+
+#define ATOMIC_TEST(type, init)                             \
+{                                                           \
+    atomic_##type object = init;                            \
+    atomic_##type expected = 2;                             \
+                                                            \
+    atomic_##type old_value = atomic_fetch_add(&object, 1); \
+    ATOMIC_CHECK(old_value, 1);                             \
+    ATOMIC_CHECK(object, 2);                                \
+                                                            \
+    atomic_store(&object, 1);                               \
+    ATOMIC_CHECK(object, 1);                                \
+                                                            \
+    old_value = atomic_load(&object);                       \
+    ATOMIC_CHECK(object, 1)                                 \
+                                                            \
+    old_value = atomic_fetch_or(&object, 4);                \
+    ATOMIC_CHECK(old_value, 1);                             \
+    ATOMIC_CHECK(object, 5);                                \
+                                                            \
+    old_value = atomic_fetch_xor(&object, 7);               \
+    ATOMIC_CHECK(old_value, 5);                             \
+    ATOMIC_CHECK(object, 2);                                \
+                                                            \
+    old_value = atomic_fetch_and(&object, 3);               \
+    ATOMIC_CHECK(old_value, 2);                             \
+    ATOMIC_CHECK(object, 2);                                \
+                                                            \
+    old_value = atomic_exchange(&object, 5);                \
+    ATOMIC_CHECK(old_value, 2);                             \
+    ATOMIC_CHECK(object, 5);                                \
+                                                            \
+    old_value = atomic_fetch_sub(&object, 3);               \
+    ATOMIC_CHECK(old_value, 5);                             \
+    ATOMIC_CHECK(object, 2);                                \
+                                                            \
+    atomic_compare_exchange_weak(&object, &expected, 5);    \
+    ATOMIC_CHECK(object, 5);                                \
+                                                            \
+    expected = 5;                                           \
+    atomic_compare_exchange_strong(&object, &expected, 2);  \
+    ATOMIC_CHECK(object, 2);                                \
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * atomic_main
+ ****************************************************************************/
+
+int main(int argc, FAR char *argv[])
+{
+  ATOMIC_TEST(int, 1);
+  ATOMIC_TEST(uint, 1U);
+  ATOMIC_TEST(long, 1L);
+  ATOMIC_TEST(ulong, 1UL);
+  ATOMIC_TEST(short, 1);
+  ATOMIC_TEST(ushort, 1);
+  ATOMIC_TEST(char, 1);
+
+  printf("atomic test complete!\n");
+  return 0;
+}