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809d74bca6
Added a script to determine the sizes of the default C11 atomic types and generate an C++ header with preprocessor defines to access the sizes of the types and an integer type of the same size (and therefore alignment requirements). |
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| .. | ||
| generate_c11_atomics_cpp_compat_header.sh | ||
| README.md | ||
Usage
./generate_c11_atomics_cpp_compat_header.sh [CC [CFLAGS]]
Parameter CC
The C compiler to use to determine the size of the C11 atomics types. If not given, the environment variable CC is used instead.
Parameter CFLAGS
The CFLAGS to pass to the C compiler during determination of the size of the C11 atomic types. If not given, the environment variable CFLAGS is used instead.
Output
The script will write the sizes of each type defined in C11 atomics and which
uint<NUM>_t type has the same size as the atomic type. Note that C11 allows
to prefix any type with the _Atomic specifier to get an atomic version of it.
This script will only generate entries for the default typedefed types like
atomic_bool, atomic_int, or atomic_int_least16_t.
The output will look like this:
/* This file was automatically generated using ./dist/tools/generate_c11_atomics_cpp_compat_header/generate_c11_atomics_cpp_compat_header.sh /*
#pragma once
#define ATOMIC_BOOL_SIZE (1U)
#define ATOMIC_BOOL_SAME_SIZED_TYPE uint8_t
#define ATOMIC_CHAR_SIZE (1U)
#define ATOMIC_CHAR_SAME_SIZED_TYPE uint8_t
#define ATOMIC_SCHAR_SIZE (1U)
#define ATOMIC_SCHAR_SAME_SIZED_TYPE uint8_t
#define ATOMIC_UCHAR_SIZE (1U)
#define ATOMIC_UCHAR_SAME_SIZED_TYPE uint8_t
#define ATOMIC_SHORT_SIZE (2U)
#define ATOMIC_SHORT_SAME_SIZED_TYPE uint16_t
#define ATOMIC_USHORT_SIZE (2U)
#define ATOMIC_USHORT_SAME_SIZED_TYPE uint16_t
#define ATOMIC_INT_SIZE (4U)
#define ATOMIC_INT_SAME_SIZED_TYPE uint32_t
...