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Diffstat (limited to 'src/framework/common/include/compiling_check.h')
-rw-r--r-- | src/framework/common/include/compiling_check.h | 106 |
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 new file mode 100644 index 0000000..e4a7538 --- /dev/null +++ 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 */ |