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-rw-r--r--src/framework/common/include/compiling_check.h106
1 files changed, 106 insertions, 0 deletions
diff --git a/src/framework/common/include/compiling_check.h b/src/framework/common/include/compiling_check.h
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+++ b/src/framework/common/include/compiling_check.h
@@ -0,0 +1,106 @@
+/*
+*
+* Copyright (c) 2018 Huawei Technologies Co.,Ltd.
+* Licensed 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.
+*/
+
+#ifndef COMPILING_CHECK_H
+#define COMPILING_CHECK_H
+
+/* protect the value of macro whose value impacts the version
+ * compatibility, can't be changed!!! */
+#define COMPAT_PROTECT(name, value) \
+static inline char value_of_##name##_equal_to() \
+{ \
+ char __dummy1[(name) - (value)]; \
+ char __dummy2[(value) - (name)]; \
+ return __dummy1[-1] + __dummy2[-1]; \
+}
+
+/* check whether struct size is equal to a special value */
+#define SIZE_OF_TYPE_EQUAL_TO(type, size) \
+static inline char size_of_##type##_equal_to_##size() \
+{ \
+ char __dummy1[sizeof(type) - size]; \
+ char __dummy2[size - sizeof(type)]; \
+ return __dummy1[-1] + __dummy2[-1]; \
+}
+
+/* check whether struct size is not equal to a special value */
+#define SIZE_OF_TYPE_UNEQUAL_TO(type, size) \
+static inline char size_of_##type##_unequal_to_##size() \
+{ \
+ char __dummy1[0==(10/(sizeof(type)-size))]; \
+ return __dummy1[-1]; \
+}
+
+/* check whether struct size is not larger than a special value */
+#define SIZE_OF_TYPE_NOT_LARGER_THAN(type, size) \
+static inline char size_of_##type##_not_larger_than_##size() \
+{ \
+ char __dummy1[size - sizeof(type)]; \
+ return __dummy1[-1]; \
+}
+
+/* check whether struct size + sizeof(void*) is not larger than a special value */
+/* reserve 8 bytes for 64 bits pointers */
+#define SIZE_OF_TYPE_PLUS8_NOT_LARGER_THAN(type, size) \
+static inline char size_of_##type##_not_larger_than_##size() \
+{ \
+ char __dummy1[size - sizeof(type) - sizeof(void*)]; \
+ return __dummy1[-1]; \
+}
+
+/* check whether struct size is not smaller than a special value */
+#define SIZE_OF_TYPE_NOT_SMALLER_THAN(type, size) \
+static inline char size_of_##type##_not_smaller_than_##size() \
+{ \
+ char __dummy1[sizeof(type) - size]; \
+ return __dummy1[-1]; \
+}
+
+/* check whether struct size is smaller than a special value */
+#define SIZE_OF_TYPE_SMALLER_THAN(type, size) \
+ SIZE_OF_TYPE_NOT_LARGER_THAN(type, size) \
+ SIZE_OF_TYPE_UNEQUAL_TO(type, size)
+
+/* check whether struct size is larger than a special value */
+#define SIZE_OF_TYPE_LARGER_THAN(type, size) \
+ SIZE_OF_TYPE_NOT_SMALLER_THAN(type, size) \
+ SIZE_OF_TYPE_UNEQUAL_TO(type, size)
+
+/* check whether struct size is smaller than a special value, version 2 */
+#define SIZE_OF_TYPE_SMALLER_THAN2(type, size) \
+static inline char size_of_##type##_smaller_than2_##size() \
+{ \
+ char __dummy1[size - sizeof(type) - 1]; \
+ return __dummy1[-1]; \
+}
+
+/* check whether struct size is larger than a special value, version 2 */
+#define SIZE_OF_TYPE_LARGER_THAN2(type, size) \
+static inline char size_of_##type##_larger_than2_##size() \
+{ \
+ char __dummy1[sizeof(type) - size - 1]; \
+ return __dummy1[-1]; \
+}
+
+/* check whether struct size is equal to an integer multiple of a special value */
+#define SIZE_OF_TYPE_IS_MULTIPLE_OF(type, size) \
+static inline char size_of_##type##_is_multiple_of_##size() \
+{ \
+ char __dummy1[0 - (sizeof(type) % size)]; \
+ return __dummy1[-1]; \
+}
+
+#endif /*compiling_check.h */