-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
+/* SPDX-License-Identifier: LGPL-2.1+ */
#pragma once
/***
- This file is part of systemd.
-
Copyright 2010 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
-#include <assert.h>
#include <inttypes.h>
#include <stdbool.h>
#include <sys/param.h>
+#include <sys/sysmacros.h>
#include <sys/types.h>
#define _printf_(a,b) __attribute__ ((format (printf, a, b)))
-#define _alloc_(...) __attribute__ ((alloc_size(__VA_ARGS__)))
+#ifdef __clang__
+# define _alloc_(...)
+#else
+# define _alloc_(...) __attribute__ ((alloc_size(__VA_ARGS__)))
+#endif
#define _sentinel_ __attribute__ ((sentinel))
#define _unused_ __attribute__ ((unused))
#define _destructor_ __attribute__ ((destructor))
#define _weakref_(x) __attribute__((weakref(#x)))
#define _alignas_(x) __attribute__((aligned(__alignof(x))))
#define _cleanup_(x) __attribute__((cleanup(x)))
+#if __GNUC__ >= 7
+#define _fallthrough_ __attribute__((fallthrough))
+#else
+#define _fallthrough_
+#endif
+/* Define C11 noreturn without <stdnoreturn.h> and even on older gcc
+ * compiler versions */
+#ifndef _noreturn_
+#if __STDC_VERSION__ >= 201112L
+#define _noreturn_ _Noreturn
+#else
+#define _noreturn_ __attribute__((noreturn))
+#endif
+#endif
+
+#if !defined(HAS_FEATURE_MEMORY_SANITIZER)
+# if defined(__has_feature)
+# if __has_feature(memory_sanitizer)
+# define HAS_FEATURE_MEMORY_SANITIZER 1
+# endif
+# endif
+# if !defined(HAS_FEATURE_MEMORY_SANITIZER)
+# define HAS_FEATURE_MEMORY_SANITIZER 0
+# endif
+#endif
/* Temporarily disable some warnings */
#define DISABLE_WARNING_DECLARATION_AFTER_STATEMENT \
#define UNIQ_T(x, uniq) CONCATENATE(__unique_prefix_, CONCATENATE(x, uniq))
#define UNIQ __COUNTER__
+/* builtins */
+#if __SIZEOF_INT__ == 4
+#define BUILTIN_FFS_U32(x) __builtin_ffs(x);
+#elif __SIZEOF_LONG__ == 4
+#define BUILTIN_FFS_U32(x) __builtin_ffsl(x);
+#else
+#error "neither int nor long are four bytes long?!?"
+#endif
+
/* Rounds up */
#define ALIGN4(l) (((l) + 3) & ~3)
return 1UL << (sizeof(u) * 8 - __builtin_clzl(u - 1UL));
}
+#ifndef __COVERITY__
+# define VOID_0 ((void)0)
+#else
+# define VOID_0 ((void*)0)
+#endif
+
#define ELEMENTSOF(x) \
__extension__ (__builtin_choose_expr( \
!__builtin_types_compatible_p(typeof(x), typeof(&*(x))), \
sizeof(x)/sizeof((x)[0]), \
- (void)0))
+ VOID_0))
+
+/*
+ * STRLEN - return the length of a string literal, minus the trailing NUL byte.
+ * Contrary to strlen(), this is a constant expression.
+ * @x: a string literal.
+ */
+#define STRLEN(x) (sizeof(""x"") - 1)
+
/*
* container_of - cast a member of a structure out to the containing structure
* @ptr: the pointer to the member.
__builtin_constant_p(_B) && \
__builtin_types_compatible_p(typeof(_A), typeof(_B)), \
((_A) > (_B)) ? (_A) : (_B), \
- (void)0))
+ VOID_0))
/* takes two types and returns the size of the larger one */
#define MAXSIZE(A, B) (sizeof(union _packed_ { typeof(A) a; typeof(B) b; }))
/* We override the glibc assert() here. */
#undef assert
#ifdef NDEBUG
-#define assert(expr) do {} while(false)
+#define assert(expr) do {} while (false)
#else
#define assert(expr) assert_message_se(expr, #expr)
#endif
({ \
typeof(x) _x_ = (x); \
unsigned ans = 1; \
- while (_x_ /= 10) \
+ while ((_x_ /= 10) != 0) \
ans++; \
ans; \
})
#define SET_FLAG(v, flag, b) \
(v) = (b) ? ((v) | (flag)) : ((v) & ~(flag))
-
-#define IN_SET(x, y, ...) \
- ({ \
- static const typeof(y) _array[] = { (y), __VA_ARGS__ }; \
- const typeof(y) _x = (x); \
- unsigned _i; \
- bool _found = false; \
- for (_i = 0; _i < ELEMENTSOF(_array); _i++) \
- if (_array[_i] == _x) { \
- _found = true; \
- break; \
- } \
- _found; \
+#define FLAGS_SET(v, flags) \
+ (((v) & (flags)) == (flags))
+
+#define CASE_F(X) case X:
+#define CASE_F_1(CASE, X) CASE_F(X)
+#define CASE_F_2(CASE, X, ...) CASE(X) CASE_F_1(CASE, __VA_ARGS__)
+#define CASE_F_3(CASE, X, ...) CASE(X) CASE_F_2(CASE, __VA_ARGS__)
+#define CASE_F_4(CASE, X, ...) CASE(X) CASE_F_3(CASE, __VA_ARGS__)
+#define CASE_F_5(CASE, X, ...) CASE(X) CASE_F_4(CASE, __VA_ARGS__)
+#define CASE_F_6(CASE, X, ...) CASE(X) CASE_F_5(CASE, __VA_ARGS__)
+#define CASE_F_7(CASE, X, ...) CASE(X) CASE_F_6(CASE, __VA_ARGS__)
+#define CASE_F_8(CASE, X, ...) CASE(X) CASE_F_7(CASE, __VA_ARGS__)
+#define CASE_F_9(CASE, X, ...) CASE(X) CASE_F_8(CASE, __VA_ARGS__)
+#define CASE_F_10(CASE, X, ...) CASE(X) CASE_F_9(CASE, __VA_ARGS__)
+#define CASE_F_11(CASE, X, ...) CASE(X) CASE_F_10(CASE, __VA_ARGS__)
+#define CASE_F_12(CASE, X, ...) CASE(X) CASE_F_11(CASE, __VA_ARGS__)
+#define CASE_F_13(CASE, X, ...) CASE(X) CASE_F_12(CASE, __VA_ARGS__)
+#define CASE_F_14(CASE, X, ...) CASE(X) CASE_F_13(CASE, __VA_ARGS__)
+#define CASE_F_15(CASE, X, ...) CASE(X) CASE_F_14(CASE, __VA_ARGS__)
+#define CASE_F_16(CASE, X, ...) CASE(X) CASE_F_15(CASE, __VA_ARGS__)
+#define CASE_F_17(CASE, X, ...) CASE(X) CASE_F_16(CASE, __VA_ARGS__)
+#define CASE_F_18(CASE, X, ...) CASE(X) CASE_F_17(CASE, __VA_ARGS__)
+#define CASE_F_19(CASE, X, ...) CASE(X) CASE_F_18(CASE, __VA_ARGS__)
+#define CASE_F_20(CASE, X, ...) CASE(X) CASE_F_19(CASE, __VA_ARGS__)
+
+#define GET_CASE_F(_1,_2,_3,_4,_5,_6,_7,_8,_9,_10,_11,_12,_13,_14,_15,_16,_17,_18,_19,_20,NAME,...) NAME
+#define FOR_EACH_MAKE_CASE(...) \
+ GET_CASE_F(__VA_ARGS__,CASE_F_20,CASE_F_19,CASE_F_18,CASE_F_17,CASE_F_16,CASE_F_15,CASE_F_14,CASE_F_13,CASE_F_12,CASE_F_11, \
+ CASE_F_10,CASE_F_9,CASE_F_8,CASE_F_7,CASE_F_6,CASE_F_5,CASE_F_4,CASE_F_3,CASE_F_2,CASE_F_1) \
+ (CASE_F,__VA_ARGS__)
+
+#define IN_SET(x, ...) \
+ ({ \
+ bool _found = false; \
+ /* If the build breaks in the line below, you need to extend the case macros */ \
+ static _unused_ char _static_assert__macros_need_to_be_extended[20 - sizeof((int[]){__VA_ARGS__})/sizeof(int)]; \
+ switch(x) { \
+ FOR_EACH_MAKE_CASE(__VA_ARGS__) \
+ _found = true; \
+ break; \
+ default: \
+ break; \
+ } \
+ _found; \
})
+#define SWAP_TWO(x, y) do { \
+ typeof(x) _t = (x); \
+ (x) = (y); \
+ (y) = (_t); \
+ } while (false)
+
/* Define C11 thread_local attribute even on older gcc compiler
* version */
#ifndef thread_local
#endif
#endif
-/* Define C11 noreturn without <stdnoreturn.h> and even on older gcc
- * compiler versions */
-#ifndef noreturn
-#if __STDC_VERSION__ >= 201112L
-#define noreturn _Noreturn
-#else
-#define noreturn __attribute__((noreturn))
-#endif
-#endif
-
#define DEFINE_TRIVIAL_CLEANUP_FUNC(type, func) \
static inline void func##p(type *p) { \
if (*p) \
func(*p); \
- } \
- struct __useless_struct_to_allow_trailing_semicolon__
+ }
#include "log.h"
~ianmdlvl / elogind.git / blobdiff