summaryrefslogtreecommitdiff
path: root/src/shared/macro.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/shared/macro.h')
-rw-r--r--src/shared/macro.h473
1 files changed, 0 insertions, 473 deletions
diff --git a/src/shared/macro.h b/src/shared/macro.h
deleted file mode 100644
index cc1c9e73c0..0000000000
--- a/src/shared/macro.h
+++ /dev/null
@@ -1,473 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-#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 <sys/param.h>
-#include <sys/types.h>
-#include <sys/uio.h>
-#include <inttypes.h>
-
-#define _printf_(a,b) __attribute__ ((format (printf, a, b)))
-#define _alloc_(...) __attribute__ ((alloc_size(__VA_ARGS__)))
-#define _sentinel_ __attribute__ ((sentinel))
-#define _unused_ __attribute__ ((unused))
-#define _destructor_ __attribute__ ((destructor))
-#define _pure_ __attribute__ ((pure))
-#define _const_ __attribute__ ((const))
-#define _deprecated_ __attribute__ ((deprecated))
-#define _packed_ __attribute__ ((packed))
-#define _malloc_ __attribute__ ((malloc))
-#define _weak_ __attribute__ ((weak))
-#define _likely_(x) (__builtin_expect(!!(x),1))
-#define _unlikely_(x) (__builtin_expect(!!(x),0))
-#define _public_ __attribute__ ((visibility("default")))
-#define _hidden_ __attribute__ ((visibility("hidden")))
-#define _weakref_(x) __attribute__((weakref(#x)))
-#define _alignas_(x) __attribute__((aligned(__alignof(x))))
-#define _cleanup_(x) __attribute__((cleanup(x)))
-
-/* Temporarily disable some warnings */
-#define DISABLE_WARNING_DECLARATION_AFTER_STATEMENT \
- _Pragma("GCC diagnostic push"); \
- _Pragma("GCC diagnostic ignored \"-Wdeclaration-after-statement\"")
-
-#define DISABLE_WARNING_FORMAT_NONLITERAL \
- _Pragma("GCC diagnostic push"); \
- _Pragma("GCC diagnostic ignored \"-Wformat-nonliteral\"")
-
-#define DISABLE_WARNING_MISSING_PROTOTYPES \
- _Pragma("GCC diagnostic push"); \
- _Pragma("GCC diagnostic ignored \"-Wmissing-prototypes\"")
-
-#define DISABLE_WARNING_NONNULL \
- _Pragma("GCC diagnostic push"); \
- _Pragma("GCC diagnostic ignored \"-Wnonnull\"")
-
-#define DISABLE_WARNING_SHADOW \
- _Pragma("GCC diagnostic push"); \
- _Pragma("GCC diagnostic ignored \"-Wshadow\"")
-
-#define DISABLE_WARNING_INCOMPATIBLE_POINTER_TYPES \
- _Pragma("GCC diagnostic push"); \
- _Pragma("GCC diagnostic ignored \"-Wincompatible-pointer-types\"")
-
-#define REENABLE_WARNING \
- _Pragma("GCC diagnostic pop")
-
-/* automake test harness */
-#define EXIT_TEST_SKIP 77
-
-#define XSTRINGIFY(x) #x
-#define STRINGIFY(x) XSTRINGIFY(x)
-
-#define XCONCATENATE(x, y) x ## y
-#define CONCATENATE(x, y) XCONCATENATE(x, y)
-
-#define UNIQ_T(x, uniq) CONCATENATE(__unique_prefix_, CONCATENATE(x, uniq))
-#define UNIQ __COUNTER__
-
-/* Rounds up */
-
-#define ALIGN4(l) (((l) + 3) & ~3)
-#define ALIGN8(l) (((l) + 7) & ~7)
-
-#if __SIZEOF_POINTER__ == 8
-#define ALIGN(l) ALIGN8(l)
-#elif __SIZEOF_POINTER__ == 4
-#define ALIGN(l) ALIGN4(l)
-#else
-#error "Wut? Pointers are neither 4 nor 8 bytes long?"
-#endif
-
-#define ALIGN_PTR(p) ((void*) ALIGN((unsigned long) (p)))
-#define ALIGN4_PTR(p) ((void*) ALIGN4((unsigned long) (p)))
-#define ALIGN8_PTR(p) ((void*) ALIGN8((unsigned long) (p)))
-
-static inline size_t ALIGN_TO(size_t l, size_t ali) {
- return ((l + ali - 1) & ~(ali - 1));
-}
-
-#define ALIGN_TO_PTR(p, ali) ((void*) ALIGN_TO((unsigned long) (p), (ali)))
-
-/* align to next higher power-of-2 (except for: 0 => 0, overflow => 0) */
-static inline unsigned long ALIGN_POWER2(unsigned long u) {
- /* clz(0) is undefined */
- if (u == 1)
- return 1;
-
- /* left-shift overflow is undefined */
- if (__builtin_clzl(u - 1UL) < 1)
- return 0;
-
- return 1UL << (sizeof(u) * 8 - __builtin_clzl(u - 1UL));
-}
-
-#define ELEMENTSOF(x) (sizeof(x)/sizeof((x)[0]))
-
-/*
- * container_of - cast a member of a structure out to the containing structure
- * @ptr: the pointer to the member.
- * @type: the type of the container struct this is embedded in.
- * @member: the name of the member within the struct.
- */
-#define container_of(ptr, type, member) __container_of(UNIQ, (ptr), type, member)
-#define __container_of(uniq, ptr, type, member) \
- __extension__ ({ \
- const typeof( ((type*)0)->member ) *UNIQ_T(A, uniq) = (ptr); \
- (type*)( (char *)UNIQ_T(A, uniq) - offsetof(type,member) ); \
- })
-
-#undef MAX
-#define MAX(a, b) __MAX(UNIQ, (a), UNIQ, (b))
-#define __MAX(aq, a, bq, b) \
- __extension__ ({ \
- const typeof(a) UNIQ_T(A, aq) = (a); \
- const typeof(b) UNIQ_T(B, bq) = (b); \
- UNIQ_T(A,aq) > UNIQ_T(B,bq) ? UNIQ_T(A,aq) : UNIQ_T(B,bq); \
- })
-
-/* evaluates to (void) if _A or _B are not constant or of different types */
-#define CONST_MAX(_A, _B) \
- __extension__ (__builtin_choose_expr( \
- __builtin_constant_p(_A) && \
- __builtin_constant_p(_B) && \
- __builtin_types_compatible_p(typeof(_A), typeof(_B)), \
- ((_A) > (_B)) ? (_A) : (_B), \
- (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; }))
-
-#define MAX3(x,y,z) \
- __extension__ ({ \
- const typeof(x) _c = MAX(x,y); \
- MAX(_c, z); \
- })
-
-#undef MIN
-#define MIN(a, b) __MIN(UNIQ, (a), UNIQ, (b))
-#define __MIN(aq, a, bq, b) \
- __extension__ ({ \
- const typeof(a) UNIQ_T(A, aq) = (a); \
- const typeof(b) UNIQ_T(B, bq) = (b); \
- UNIQ_T(A,aq) < UNIQ_T(B,bq) ? UNIQ_T(A,aq) : UNIQ_T(B,bq); \
- })
-
-#define MIN3(x,y,z) \
- __extension__ ({ \
- const typeof(x) _c = MIN(x,y); \
- MIN(_c, z); \
- })
-
-#define LESS_BY(a, b) __LESS_BY(UNIQ, (a), UNIQ, (b))
-#define __LESS_BY(aq, a, bq, b) \
- __extension__ ({ \
- const typeof(a) UNIQ_T(A, aq) = (a); \
- const typeof(b) UNIQ_T(B, bq) = (b); \
- UNIQ_T(A,aq) > UNIQ_T(B,bq) ? UNIQ_T(A,aq) - UNIQ_T(B,bq) : 0; \
- })
-
-#undef CLAMP
-#define CLAMP(x, low, high) __CLAMP(UNIQ, (x), UNIQ, (low), UNIQ, (high))
-#define __CLAMP(xq, x, lowq, low, highq, high) \
- __extension__ ({ \
- const typeof(x) UNIQ_T(X,xq) = (x); \
- const typeof(low) UNIQ_T(LOW,lowq) = (low); \
- const typeof(high) UNIQ_T(HIGH,highq) = (high); \
- UNIQ_T(X,xq) > UNIQ_T(HIGH,highq) ? \
- UNIQ_T(HIGH,highq) : \
- UNIQ_T(X,xq) < UNIQ_T(LOW,lowq) ? \
- UNIQ_T(LOW,lowq) : \
- UNIQ_T(X,xq); \
- })
-
-/* [(x + y - 1) / y] suffers from an integer overflow, even though the
- * computation should be possible in the given type. Therefore, we use
- * [x / y + !!(x % y)]. Note that on "Real CPUs" a division returns both the
- * quotient and the remainder, so both should be equally fast. */
-#define DIV_ROUND_UP(_x, _y) \
- __extension__ ({ \
- const typeof(_x) __x = (_x); \
- const typeof(_y) __y = (_y); \
- (__x / __y + !!(__x % __y)); \
- })
-
-#define assert_se(expr) \
- do { \
- if (_unlikely_(!(expr))) \
- log_assert_failed(#expr, __FILE__, __LINE__, __PRETTY_FUNCTION__); \
- } while (false) \
-
-/* We override the glibc assert() here. */
-#undef assert
-#ifdef NDEBUG
-#define assert(expr) do {} while(false)
-#else
-#define assert(expr) assert_se(expr)
-#endif
-
-#define assert_not_reached(t) \
- do { \
- log_assert_failed_unreachable(t, __FILE__, __LINE__, __PRETTY_FUNCTION__); \
- } while (false)
-
-#if defined(static_assert)
-/* static_assert() is sometimes defined in a way that trips up
- * -Wdeclaration-after-statement, hence let's temporarily turn off
- * this warning around it. */
-#define assert_cc(expr) \
- DISABLE_WARNING_DECLARATION_AFTER_STATEMENT; \
- static_assert(expr, #expr); \
- REENABLE_WARNING
-#else
-#define assert_cc(expr) \
- DISABLE_WARNING_DECLARATION_AFTER_STATEMENT; \
- struct CONCATENATE(_assert_struct_, __COUNTER__) { \
- char x[(expr) ? 0 : -1]; \
- }; \
- REENABLE_WARNING
-#endif
-
-#define assert_return(expr, r) \
- do { \
- if (_unlikely_(!(expr))) { \
- log_assert_failed_return(#expr, __FILE__, __LINE__, __PRETTY_FUNCTION__); \
- return (r); \
- } \
- } while (false)
-
-#define assert_return_errno(expr, r, err) \
- do { \
- if (_unlikely_(!(expr))) { \
- log_assert_failed_return(#expr, __FILE__, __LINE__, __PRETTY_FUNCTION__); \
- errno = err; \
- return (r); \
- } \
- } while (false)
-
-#define PTR_TO_INT(p) ((int) ((intptr_t) (p)))
-#define INT_TO_PTR(u) ((void *) ((intptr_t) (u)))
-#define PTR_TO_UINT(p) ((unsigned int) ((uintptr_t) (p)))
-#define UINT_TO_PTR(u) ((void *) ((uintptr_t) (u)))
-
-#define PTR_TO_LONG(p) ((long) ((intptr_t) (p)))
-#define LONG_TO_PTR(u) ((void *) ((intptr_t) (u)))
-#define PTR_TO_ULONG(p) ((unsigned long) ((uintptr_t) (p)))
-#define ULONG_TO_PTR(u) ((void *) ((uintptr_t) (u)))
-
-#define PTR_TO_INT32(p) ((int32_t) ((intptr_t) (p)))
-#define INT32_TO_PTR(u) ((void *) ((intptr_t) (u)))
-#define PTR_TO_UINT32(p) ((uint32_t) ((uintptr_t) (p)))
-#define UINT32_TO_PTR(u) ((void *) ((uintptr_t) (u)))
-
-#define PTR_TO_INT64(p) ((int64_t) ((intptr_t) (p)))
-#define INT64_TO_PTR(u) ((void *) ((intptr_t) (u)))
-#define PTR_TO_UINT64(p) ((uint64_t) ((uintptr_t) (p)))
-#define UINT64_TO_PTR(u) ((void *) ((uintptr_t) (u)))
-
-#define PTR_TO_SIZE(p) ((size_t) ((uintptr_t) (p)))
-#define SIZE_TO_PTR(u) ((void *) ((uintptr_t) (u)))
-
-/* The following macros add 1 when converting things, since UID 0 is a
- * valid UID, while the pointer NULL is special */
-#define PTR_TO_UID(p) ((uid_t) (((uintptr_t) (p))-1))
-#define UID_TO_PTR(u) ((void*) (((uintptr_t) (u))+1))
-
-#define PTR_TO_GID(p) ((gid_t) (((uintptr_t) (p))-1))
-#define GID_TO_PTR(u) ((void*) (((uintptr_t) (u))+1))
-
-#define memzero(x,l) (memset((x), 0, (l)))
-#define zero(x) (memzero(&(x), sizeof(x)))
-
-#define CHAR_TO_STR(x) ((char[2]) { x, 0 })
-
-#define char_array_0(x) x[sizeof(x)-1] = 0;
-
-#define IOVEC_SET_STRING(i, s) \
- do { \
- struct iovec *_i = &(i); \
- char *_s = (char *)(s); \
- _i->iov_base = _s; \
- _i->iov_len = strlen(_s); \
- } while(false)
-
-static inline size_t IOVEC_TOTAL_SIZE(const struct iovec *i, unsigned n) {
- unsigned j;
- size_t r = 0;
-
- for (j = 0; j < n; j++)
- r += i[j].iov_len;
-
- return r;
-}
-
-static inline size_t IOVEC_INCREMENT(struct iovec *i, unsigned n, size_t k) {
- unsigned j;
-
- for (j = 0; j < n; j++) {
- size_t sub;
-
- if (_unlikely_(k <= 0))
- break;
-
- sub = MIN(i[j].iov_len, k);
- i[j].iov_len -= sub;
- i[j].iov_base = (uint8_t*) i[j].iov_base + sub;
- k -= sub;
- }
-
- return k;
-}
-
-#define VA_FORMAT_ADVANCE(format, ap) \
-do { \
- int _argtypes[128]; \
- size_t _i, _k; \
- _k = parse_printf_format((format), ELEMENTSOF(_argtypes), _argtypes); \
- assert(_k < ELEMENTSOF(_argtypes)); \
- for (_i = 0; _i < _k; _i++) { \
- if (_argtypes[_i] & PA_FLAG_PTR) { \
- (void) va_arg(ap, void*); \
- continue; \
- } \
- \
- switch (_argtypes[_i]) { \
- case PA_INT: \
- case PA_INT|PA_FLAG_SHORT: \
- case PA_CHAR: \
- (void) va_arg(ap, int); \
- break; \
- case PA_INT|PA_FLAG_LONG: \
- (void) va_arg(ap, long int); \
- break; \
- case PA_INT|PA_FLAG_LONG_LONG: \
- (void) va_arg(ap, long long int); \
- break; \
- case PA_WCHAR: \
- (void) va_arg(ap, wchar_t); \
- break; \
- case PA_WSTRING: \
- case PA_STRING: \
- case PA_POINTER: \
- (void) va_arg(ap, void*); \
- break; \
- case PA_FLOAT: \
- case PA_DOUBLE: \
- (void) va_arg(ap, double); \
- break; \
- case PA_DOUBLE|PA_FLAG_LONG_DOUBLE: \
- (void) va_arg(ap, long double); \
- break; \
- default: \
- assert_not_reached("Unknown format string argument."); \
- } \
- } \
-} while(false)
-
- /* Because statfs.t_type can be int on some architectures, we have to cast
- * the const magic to the type, otherwise the compiler warns about
- * signed/unsigned comparison, because the magic can be 32 bit unsigned.
- */
-#define F_TYPE_EQUAL(a, b) (a == (typeof(a)) b)
-
-/* Returns the number of chars needed to format variables of the
- * specified type as a decimal string. Adds in extra space for a
- * negative '-' prefix (hence works correctly on signed
- * types). Includes space for the trailing NUL. */
-#define DECIMAL_STR_MAX(type) \
- (2+(sizeof(type) <= 1 ? 3 : \
- sizeof(type) <= 2 ? 5 : \
- sizeof(type) <= 4 ? 10 : \
- sizeof(type) <= 8 ? 20 : sizeof(int[-2*(sizeof(type) > 8)])))
-
-#define SET_FLAG(v, flag, b) \
- (v) = (b) ? ((v) | (flag)) : ((v) & ~(flag))
-
-#define IN_SET(x, y, ...) \
- ({ \
- const typeof(y) _y = (y); \
- const typeof(_y) _x = (x); \
- unsigned _i; \
- bool _found = false; \
- for (_i = 0; _i < 1 + sizeof((const typeof(_x)[]) { __VA_ARGS__ })/sizeof(const typeof(_x)); _i++) \
- if (((const typeof(_x)[]) { _y, __VA_ARGS__ })[_i] == _x) { \
- _found = true; \
- break; \
- } \
- _found; \
- })
-
-/* Return a nulstr for a standard cascade of configuration directories,
- * suitable to pass to conf_files_list_nulstr or config_parse_many. */
-#define CONF_DIRS_NULSTR(n) \
- "/etc/" n ".d\0" \
- "/run/" n ".d\0" \
- "/usr/local/lib/" n ".d\0" \
- "/usr/lib/" n ".d\0" \
- CONF_DIR_SPLIT_USR(n)
-
-#ifdef HAVE_SPLIT_USR
-#define CONF_DIR_SPLIT_USR(n) "/lib/" n ".d\0"
-#else
-#define CONF_DIR_SPLIT_USR(n)
-#endif
-
-/* Define C11 thread_local attribute even on older gcc compiler
- * version */
-#ifndef thread_local
-/*
- * Don't break on glibc < 2.16 that doesn't define __STDC_NO_THREADS__
- * see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53769
- */
-#if __STDC_VERSION__ >= 201112L && !(defined(__STDC_NO_THREADS__) || (defined(__GNU_LIBRARY__) && __GLIBC__ == 2 && __GLIBC_MINOR__ < 16))
-#define thread_local _Thread_local
-#else
-#define thread_local __thread
-#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 UID_INVALID ((uid_t) -1)
-#define GID_INVALID ((gid_t) -1)
-#define MODE_INVALID ((mode_t) -1)
-
-#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__
-
-#define CMSG_FOREACH(cmsg, mh) \
- for ((cmsg) = CMSG_FIRSTHDR(mh); (cmsg); (cmsg) = CMSG_NXTHDR((mh), (cmsg)))
-
-#include "log.h"
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-12-04 23:48:44 +0000